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Shedding smart light on the effectiveness of chemotherapy: using Raman spectroscopy and machine learning to differentiate the effects of Cytarabine toxicity and crosstalk of leukaemic and bone marrow stromal cells (2021)
Journal Article
Gynn, L., Lamb-Riddell, K., Cox, T., Hansen, M., Conway, M., & May, J. (2021). Shedding smart light on the effectiveness of chemotherapy: using Raman spectroscopy and machine learning to differentiate the effects of Cytarabine toxicity and crosstalk of leukaemic and bone marrow stromal cells. British Journal of Haematology, 193(S1), 46-47

Mesenchymal stromal cells (MSC) protect leukaemic cells from drug-induced toxicity within the bone marrow niche, with increasing evidence of leukaemic impact on supportive stroma. The nucleoside analogue, cytarabine (ara-C), is a front-line agent for... Read More about Shedding smart light on the effectiveness of chemotherapy: using Raman spectroscopy and machine learning to differentiate the effects of Cytarabine toxicity and crosstalk of leukaemic and bone marrow stromal cells.

BCATc modulates crosstalk between the PI3K/Akt and the Ras/ERK pathway regulating proliferation in triple negative breast cancer (2020)
Journal Article
Shafei, M. A., Forshaw, T., Davis, J., Flemban, A., Qualtrough, D., Dean, S., …Conway, M. E. (2020). BCATc modulates crosstalk between the PI3K/Akt and the Ras/ERK pathway regulating proliferation in triple negative breast cancer. Oncotarget, 11, 1971-1987. https://doi.org/10.18632/oncotarget.27607

The cytosolic branched chain aminotransferase (BCATc) protein has been found to be highly expressed in breast cancer subtypes, including triple negative breast cancer (TNBC), compared with normal breast tissue. The catabolism of branched-chain amino... Read More about BCATc modulates crosstalk between the PI3K/Akt and the Ras/ERK pathway regulating proliferation in triple negative breast cancer.

BCAT-induced autophagy regulates Aβ load through an interdependence of redox state and PKC phosphorylation-implications in Alzheimer's disease (2020)
Journal Article
Harris, M., El Hindy, M., Usmari-Moraes, M., Hudd, F., Shafei, M., Dong, M., …Conway, M. E. (in press). BCAT-induced autophagy regulates Aβ load through an interdependence of redox state and PKC phosphorylation-implications in Alzheimer's disease. Free Radical Biology and Medicine, https://doi.org/10.1016/j.freeradbiomed.2020.01.019

Leucine, nutrient signal and substrate for the branched chain aminotransferase (BCAT) activates the mechanistic target of rapamycin (mTORC1) and regulates autophagic flux, mechanisms implicated in the pathogenesis of neurodegenerative conditions such... Read More about BCAT-induced autophagy regulates Aβ load through an interdependence of redox state and PKC phosphorylation-implications in Alzheimer's disease.

Investigating ROS, RNS, and H2S-sensitive signaling proteins (2019)
Book Chapter
Williams, E., Whiteman, M., Wood, M. E., Wilson, I. D., Ladomery, M. R., Allainguillaume, J., …Hancock, J. T. (2019). Investigating ROS, RNS, and H2S-sensitive signaling proteins. In J. T. Hancock, & M. E. Conway (Eds.), Redox-Mediated Signal Transduction (27-42). Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9463-2_3

© Springer Science+Business Media, LLC, part of Springer Nature 2019. The modification of proteins is a key way to alter their activity and function. Often thiols, cysteine residues, on proteins are attractive targets for such modification. Assuming... Read More about Investigating ROS, RNS, and H2S-sensitive signaling proteins.

Predicting the effects of low dose-rate ionizing radiation on redox potential in plant cells (2019)
Book Chapter
Caplin, N., & Willey, N. (2019). Predicting the effects of low dose-rate ionizing radiation on redox potential in plant cells. In J. T. Hancock, & M. E. Conway (Eds.), Redox-Mediated Signal Transduction, (135-142). New York, USA: Humana. https://doi.org/10.1007/978-1-4939-9463-2_11

During exposure of cells to acute high dose-rate ionizing radiation (IR), oxidants from the radiolysis of water can overwhelm antioxidant systems. Protecting flora from the effects of IR released from a nuclear industry of increasing global significa... Read More about Predicting the effects of low dose-rate ionizing radiation on redox potential in plant cells.

Methods for the addition of redox compounds (2019)
Book Chapter
Hancock, J. T. Methods for the addition of redox compounds. In J. T. Hancock, & M. E. Conway (Eds.), Redox-Mediated Signal Transduction (13-25). Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9463-2_2

© Springer Science+Business Media, LLC, part of Springer Nature 2019. Often in redox biology experiments there is a need to add compounds which impinge on the redox of the cellular environment cell. Such compounds may include reactive oxygen species... Read More about Methods for the addition of redox compounds.

Equations to support redox experimentation (2019)
Book Chapter
Hancock, J. T., & Whiteman, M. Equations to support redox experimentation. In J. T. Hancock, & M. E. Conway (Eds.), Redox-Mediated Signal Transduction (183-195). Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9463-2_15

© Springer Science+Business Media, LLC, part of Springer Nature 2019. Working with redox compounds needs to take into account the oxidation and reduction state of the compound under study. This redox state can be influenced by the media in which the... Read More about Equations to support redox experimentation.

Novel blood biomarkers that correlate with cognitive performance and hippocampal volumetry: Potential for early diagnosis of Alzheimer's disease (2019)
Journal Article
Hudd, F., Shiel, A., Harris, M., Bowdler, P., McCann, B., Tsivos, D., …Conway, M. E. (2019). Novel blood biomarkers that correlate with cognitive performance and hippocampal volumetry: Potential for early diagnosis of Alzheimer's disease. Journal of Alzheimer's Disease, 67(3), 931-947. https://doi.org/10.3233/JAD-180879

© 2019 - IOS Press and the authors. All rights reserved. Background: Differential diagnosis of people presenting with mild cognitive impairment (MCI) that will progress to Alzheimer's disease (AD) remains clinically challenging. Current criteria used... Read More about Novel blood biomarkers that correlate with cognitive performance and hippocampal volumetry: Potential for early diagnosis of Alzheimer's disease.

The role of redox in signal transduction (2019)
Book Chapter
Hancock, J. T. (2019). The role of redox in signal transduction. In J. T. Hancock, & M. E. Conway (Eds.), Redox-Mediated Signal Transduction (1-11). Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9463-2_1

© Springer Science+Business Media, LLC, part of Springer Nature 2019. It is the functioning of efficient cell signaling which is vital for the survival of cells, whether it is a simple prokaryote or a complex eukaryote, including both animals and pla... Read More about The role of redox in signal transduction.

Immunotherapeutic and pharmacological approaches for the treatment of Alzheimer’s disease (2018)
Journal Article
Usmari Moraes, M., Gaudet, T., Hull, J., & Conway, M. E. (2018). Immunotherapeutic and pharmacological approaches for the treatment of Alzheimer’s disease. Bioscience Horizons, 11, 1-7

The development of efficacious treatments targeting Alzheimer’s disease (AD) aetiology has been proved an extensive, time consuming task. Currently prescribed therapies, primarily acetylcholinesterase inhibitors such as donepezil and the NMDAreceptor... Read More about Immunotherapeutic and pharmacological approaches for the treatment of Alzheimer’s disease.

Hypoxia modulates the stem cell population and induces EMT in the MCF-10A breast epithelial cell line (2017)
Journal Article
Daly, C. S., Flemban, A., Shafei, M., Conway, M. E., Qualtrough, D., & Dean, S. J. (2018). Hypoxia modulates the stem cell population and induces EMT in the MCF-10A breast epithelial cell line. Oncology Reports, 39(2), 483-490. https://doi.org/10.3892/or.2017.6125

A common feature among pre-malignant lesions is the induction of hypoxia through increased cell propagation and reduced access to blood flow. Hypoxia in breast cancer has been associated with poor patient prognosis, resistance to chemotherapy and inc... Read More about Hypoxia modulates the stem cell population and induces EMT in the MCF-10A breast epithelial cell line.

Distribution of the branched-chain α-ketoacid dehydrogenase complex E1α subunit and glutamate dehydrogenase in the human brain and their role in neuro-metabolism (2017)
Journal Article
Hull, J., Usmari Moraes, M., Brookes, E., Love, S., & Conway, M. E. (2018). Distribution of the branched-chain α-ketoacid dehydrogenase complex E1α subunit and glutamate dehydrogenase in the human brain and their role in neuro-metabolism. Neurochemistry International, 112, 49-58. https://doi.org/10.1016/j.neuint.2017.10.014

© 2017 Glutamate is the major excitatory neurotransmitter of the central nervous system, with the branched-chain amino acids (BCAAs) acting as key nitrogen donors for de novo glutamate synthesis. Despite the importance of these major metabolites, the... Read More about Distribution of the branched-chain α-ketoacid dehydrogenase complex E1α subunit and glutamate dehydrogenase in the human brain and their role in neuro-metabolism.

The impact of ageing reveals distinct roles for human dentate gyrus and CA3 in pattern separation and object recognition memory (2017)
Journal Article
Dillon, S. E., Tsivos, D., Knight, M., McCann, B., Pennington, C., Shiel, A. I., …Coulthard, E. J. (2017). The impact of ageing reveals distinct roles for human dentate gyrus and CA3 in pattern separation and object recognition memory. Scientific Reports, 7, Article 14069. https://doi.org/10.1038/s41598-017-13853-8

© 2017 The Author(s). Both recognition of familiar objects and pattern separation, a process that orthogonalises overlapping events, are critical for effective memory. Evidence is emerging that human pattern separation requires dentate gyrus. Dentate... Read More about The impact of ageing reveals distinct roles for human dentate gyrus and CA3 in pattern separation and object recognition memory.

Evaluation of recombinant factor C assay for the detection of divergent lipopolysaccharide structural species and comparison with Limulus amebocyte lysate-based assays and a human monocyte activity assay (2017)
Journal Article
Jackson, S. K., Sattar, A. A., Abate, W., Liu, J., & Conway, M. E. (2017). Evaluation of recombinant factor C assay for the detection of divergent lipopolysaccharide structural species and comparison with Limulus amebocyte lysate-based assays and a human monocyte activity assay. Journal of Medical Microbiology, 66(7), 888-897. https://doi.org/10.1099/jmm.0.000510

© 2017 The Authors. Purpose. The Limulus amebocytelysate (LAL) assay is widely used for the screening of lipopolysaccharide (LPS) in parenteral pharmaceuticals. However, correlation of LPS in Gram-negative bacterial infections by LAL assay has been p... Read More about Evaluation of recombinant factor C assay for the detection of divergent lipopolysaccharide structural species and comparison with Limulus amebocyte lysate-based assays and a human monocyte activity assay.

Divergent metabolic regulation of autophagy and mTORC1-early events in Alzheimer's disease? (2017)
Journal Article
Harris, M., Shafei, M., & Conway, M. E. (2017). Divergent metabolic regulation of autophagy and mTORC1-early events in Alzheimer's disease?. Frontiers in Aging Neuroscience, 9(JUN), https://doi.org/10.3389/fnagi.2017.00173

© 2017 Shafei, Harris and Conway. Alzheimer's disease (AD) is a progressive disease associated with the production and deposition of amyloid β-peptide (Aβ) aggregates and neurofibrillary tangles, which lead to synaptic and neuronal damage. Reduced au... Read More about Divergent metabolic regulation of autophagy and mTORC1-early events in Alzheimer's disease?.

Enhanced task-related brain activation and resting perfusion in healthy older adults after chronic blueberry supplementation (2017)
Journal Article
Aboo-Bakkar, Z., Bowtell, J. L., Zainie, A., Conway, M. E., Adlam, A. L. R., & Fulford, J. (2017). Enhanced task-related brain activation and resting perfusion in healthy older adults after chronic blueberry supplementation. Applied Physiology, Nutrition, and Metabolism, 42(7), 773-779. https://doi.org/10.1139/apnm-2016-0550

© 2017, Canadian Science Publishing. All rights reserved. Blueberries are rich in flavonoids, which possess antioxidant and anti-inflammatory properties. High flavonoid intakes attenuate age-related cognitive decline, but data from human intervention... Read More about Enhanced task-related brain activation and resting perfusion in healthy older adults after chronic blueberry supplementation.

Decreased expression of the mitochondrial BCAT protein correlates with improved patient survival in IDH-WT gliomas (2016)
Journal Article
Ellis, H. P., Williams, M., Hull, J., Conway, M. E., Hull, J., El Hindy, M., …Kurian, K. M. (2016). Decreased expression of the mitochondrial BCAT protein correlates with improved patient survival in IDH-WT gliomas. Brain Pathology, 26(6), 789-791. https://doi.org/10.1111/bpa.12385

Background and research question: Gliomas represent 43% of all solid intracranial tumours, of which glioblastomas have the poorest prognosis. Recently, the human cytosolic branched-chain aminotransferase protein (hBCATc), which metabolises the branch... Read More about Decreased expression of the mitochondrial BCAT protein correlates with improved patient survival in IDH-WT gliomas.

Altered Expression of Human Mitochondrial Branched Chain Aminotransferase in Dementia with Lewy Bodies and Vascular Dementia (2016)
Journal Article
Hutson, S. M., Kehoe, P. G., Hull, J., Ashby, E. L., Ashby, E., Kierzkowska, M., …Conway, M. E. (2017). Altered Expression of Human Mitochondrial Branched Chain Aminotransferase in Dementia with Lewy Bodies and Vascular Dementia. Neurochemical Research, 42(1), 306-319. https://doi.org/10.1007/s11064-016-1855-7

© 2016, The Author(s). Cytosolic and mitochondrial human branched chain aminotransferase (hBCATc and hBCATm, respectively) play an integral role in brain glutamate metabolism. Regional increased levels of hBCATc in the CA1 and CA4 region of Alzheimer... Read More about Altered Expression of Human Mitochondrial Branched Chain Aminotransferase in Dementia with Lewy Bodies and Vascular Dementia.

New insights into the role of the branched-chain aminotransferase proteins in the human brain (2015)
Journal Article
Hull, J., Patel, V. B., Hutson, S. M., & Conway, M. E. (2015). New insights into the role of the branched-chain aminotransferase proteins in the human brain. Journal of Neuroscience Research, 93(7), 987-998. https://doi.org/10.1002/jnr.23558

© 2015 Wiley Periodicals, Inc. The human cytosolic branched-chain aminotransferase (hBCATc) enzyme is strategically located in glutamatergic neurons, where it is thought to provide approximately 30% of de novo nitrogen for brain glutamate synthesis.... Read More about New insights into the role of the branched-chain aminotransferase proteins in the human brain.

S-nitrosylation of the thioredoxin-like domains of protein disulfide isomerase and its role in neurodegenerative conditions (2015)
Journal Article
Conway, M. E., & Harris, M. (2015). S-nitrosylation of the thioredoxin-like domains of protein disulfide isomerase and its role in neurodegenerative conditions. Frontiers in Chemistry, 3(APR), https://doi.org/10.3389/fchem.2015.00027

© 2015 Conway and Harris. Correct protein folding and inhibition of protein aggregation is facilitated by a cellular "quality control system" that engages a network of protein interactions including molecular chaperones and the ubiquitin proteasome s... Read More about S-nitrosylation of the thioredoxin-like domains of protein disulfide isomerase and its role in neurodegenerative conditions.

The redox switch that regulates molecular chaperones (2015)
Journal Article
Conway, M. E., & Lee, C. (2015). The redox switch that regulates molecular chaperones. BioMolecular Concepts, 6(4), 269-284. https://doi.org/10.1515/bmc-2015-0015

© 2015 by De Gruyter. Modification of reactive cysteine residues plays an integral role in redox-regulated reactions. Oxidation of thiolate anions to sulphenic acid can result in disulphide bond formation, or overoxidation to sulphonic acid, represen... Read More about The redox switch that regulates molecular chaperones.

Regional Increase in the Expression of the BCAT Proteins in Alzheimer's Disease Brain: Implications in Glutamate Toxicity (2015)
Journal Article
Hull, J., Patel, V., El Hindy, M., Lee, C., Odeleye, E., Hezwani, M., …Conway, M. (2015). Regional Increase in the Expression of the BCAT Proteins in Alzheimer's Disease Brain: Implications in Glutamate Toxicity. Journal of Alzheimer's Disease, 45(3), 891-905. https://doi.org/10.3233/JAD-142970

© 2015 - IOS Press and the authors. All rights reserved. Background: The human branched chain aminotransferases (hBCATm, mitochondrial and hBCATc, cytosolic) are major contributors to brain glutamate production. This excitatory neurotransmitter is th... Read More about Regional Increase in the Expression of the BCAT Proteins in Alzheimer's Disease Brain: Implications in Glutamate Toxicity.

The branched-chain aminotransferase proteins: Novel redox chaperones for protein disulfide isomerase-implications in Alzheimer's disease (2014)
Journal Article
Patel, V. B., Lee, C., El Hindy, M., Hezwani, M., Corry, D., Hull, J., …Conway, M. E. (2014). The branched-chain aminotransferase proteins: Novel redox chaperones for protein disulfide isomerase-implications in Alzheimer's disease. Antioxidants and Redox Signaling, 20(16), 2497-2513. https://doi.org/10.1089/ars.2012.4869

Aims: The human branched-chain aminotransferase proteins (hBCATm and hBCATc) are regulated through oxidation and S-nitrosation. However, it remains unknown whether they share common redox characteristics to enzymes such as protein disulfide isomerase... Read More about The branched-chain aminotransferase proteins: Novel redox chaperones for protein disulfide isomerase-implications in Alzheimer's disease.

Investigation and verification of a bioluminescent biosensor for the quantitation of ara-CTP generation: A biomarker for cytosine arabinoside sensitivity in acute myeloid leukaemia (2014)
Journal Article
Graham Smith, J., Peter Fitzgerald, S., Martin, A., Ann Smith, M., Conway, M., Anderson, E., …Salisbury, V. (2014). Investigation and verification of a bioluminescent biosensor for the quantitation of ara-CTP generation: A biomarker for cytosine arabinoside sensitivity in acute myeloid leukaemia. Biosensors and Bioelectronics, 52, 345-353. https://doi.org/10.1016/j.bios.2013.09.014

A novel whole cell bacterial biosensor, which emits light in response to the active metabolite of cytosine arabinoside (ara-C, cytarabine), ara-CTP, has been investigated and verified. The biosensor has been formulated as an ex vivo assay, designed f... Read More about Investigation and verification of a bioluminescent biosensor for the quantitation of ara-CTP generation: A biomarker for cytosine arabinoside sensitivity in acute myeloid leukaemia.

A novel bioluminescent bacterial biosensor for measurement of Ara-CTP and cytarabine potentiation by fludarabine in seven leukaemic cell lines (2013)
Journal Article
Conway, M., Anderson, E., Smith, M. A., Martin, A., Ruddock, M., Lamont, J., …Salisbury, V. (2013). A novel bioluminescent bacterial biosensor for measurement of Ara-CTP and cytarabine potentiation by fludarabine in seven leukaemic cell lines. Leukemia Research, 37(6), 690-696. https://doi.org/10.1016/j.leukres.2013.02.012

This study evaluates an in vitro biosensor assay capable of detecting the intracellular levels of the tri-phosphorylated form of cytarabine (Ara-CTP) within one working day. The biosensor predicted the response of seven leukaemic cell lines with vary... Read More about A novel bioluminescent bacterial biosensor for measurement of Ara-CTP and cytarabine potentiation by fludarabine in seven leukaemic cell lines.

Distribution of the branched chain aminotransferase proteins in the human brain and their role in glutamate regulation (2012)
Journal Article
Hull, J., Hindy, M. E., Kehoe, P. G., Chalmers, K., Love, S., & Conway, M. E. (2012). Distribution of the branched chain aminotransferase proteins in the human brain and their role in glutamate regulation. Journal of Neurochemistry, 123(6), 997-1009. https://doi.org/10.1111/jnc.12044

The branched chain aminotransferase enzymes (BCAT) serve as nitrogen donors for the production of 30% of de novo glutamate synthesis in rat brain. Despite the importance of this major metabolite and excitatory neurotransmitter, the distribution of BC... Read More about Distribution of the branched chain aminotransferase proteins in the human brain and their role in glutamate regulation.

Differential redox potential between the human cytosolic and mitochondrial branched-chain aminotransferase (2012)
Journal Article
Coles, S. J., Hancock, J. T., & Conway, M. E. (2012). Differential redox potential between the human cytosolic and mitochondrial branched-chain aminotransferase. Acta Biochimica et Biophysica Sinica, 44(2), 172-176. https://doi.org/10.1093/abbs/gmr103

The human branched-chain aminotransferase (hBCAT) isoenzymes are CXXC motif redox sensitive homodimers central to glutamate metabolism in the central nervous system. These proteins respond differently to oxidation by H 2O 2, NO, and S-glutathionylati... Read More about Differential redox potential between the human cytosolic and mitochondrial branched-chain aminotransferase.

Aminotransferases (2011)
Book Chapter
Conway, M. E. (2011). Aminotransferases. In J. D'Mello (Ed.), Amino Acids in Human Nutrition and Health (24-41). CABI

The aminotransferases are PLP dependent proteins which catalyze the transfer of an amino group from the donor amino acid to α-ketoglutarate, forming glutamate and the respective keto acids. Several key aminotransferase proteins have been identified a... Read More about Aminotransferases.

S-Nitrosoglutathione inactivation of the mitochondrial and cytosolic BCAT proteins: S-nitrosation and S-thiolation (2009)
Journal Article
Coles, S. J., Easton, P., Sharrod, H., Hutson, S. M., Hancock, J. T., Patel, V., & Conway, M. E. (2009). S-Nitrosoglutathione inactivation of the mitochondrial and cytosolic BCAT proteins: S-nitrosation and S-thiolation. Biochemistry, 48(3), 645-656. https://doi.org/10.1021/bi801805h

Specific proteins with reactive thiol(ate) groups are susceptible to nitric oxide (NO) modification, which can result in S-nitrosation, S-thiolation, or disulfide bond formation. In the present study the effect of NO modification on the functionality... Read More about S-Nitrosoglutathione inactivation of the mitochondrial and cytosolic BCAT proteins: S-nitrosation and S-thiolation.

S-nitrosoglutathione inactivation of the mitochondrial and cytosolic BCAT proteins: S-nitrosation and s-thiolation (2009)
Journal Article
Coles, S. J., Easton, P., Sharrod, H., Hutson, S. M., Hancock, J. T., Patel, V. B., & Conway, M. E. (2009). S-nitrosoglutathione inactivation of the mitochondrial and cytosolic BCAT proteins: S-nitrosation and s-thiolation. Biochemistry, 48(3), 645-656. https://doi.org/10.1021/bi801805h

Specific proteins with reactive thiol(ate) groups are susceptible to nitric oxide (NO) modification, which can result in S-nitrosation, S-thiolation, or disulfide bond formation. In the present study the effect of NO modification on the functionality... Read More about S-nitrosoglutathione inactivation of the mitochondrial and cytosolic BCAT proteins: S-nitrosation and s-thiolation.

Redox regulation and trapping sulfenic acid in the peroxide-sensitive human mitochondrial branched chain aminotransferase (2009)
Book Chapter
Hutson, S. M., Poole, L. B., Coles, S., & Conway, M. E. (2009). Redox regulation and trapping sulfenic acid in the peroxide-sensitive human mitochondrial branched chain aminotransferase. In J. T. Hancock (Ed.), Redox-Mediated Signal Transduction (135-148). Humana Press (Springer Imprint). https://doi.org/10.1007/978-1-59745-129-1_10

The human branched chain aminotransferase enzymes are key regulators of glutamate metabolism in the brain and are among a growing number of redox-sensitive proteins. Studies that use thiol-specific reagents and electrospray ionization mass spectromet... Read More about Redox regulation and trapping sulfenic acid in the peroxide-sensitive human mitochondrial branched chain aminotransferase.

Redox regulation and trapping sulphenic acid in the peroxide sensitive human mitochondrial branched chain aminotransferase (2008)
Journal Article
Coles, S., Hutson, S. M., Poole, L. B., & Conway, M. E. (2008). Redox regulation and trapping sulphenic acid in the peroxide sensitive human mitochondrial branched chain aminotransferase. Methods in Molecular Biology, 476, 139-152. https://doi.org/10.1007/978-1-59745-129-1_10

The human branched chain aminotransferase enzymes are key regulators of glutamate metabolism in the brain and are among a growing number of redox-sensitive proteins. Studies that use thiol-specific reagents and electrospray ionization mass spectromet... Read More about Redox regulation and trapping sulphenic acid in the peroxide sensitive human mitochondrial branched chain aminotransferase.

Regulatory control of human cytosolic branched-chain aminotransferase by oxidation and S-glutathionylation and its interactions with redox sensitive neuronal proteins (2008)
Journal Article
Conway, M. E., Coles, S. J., Islam, M. M., & Hutson, S. M. (2008). Regulatory control of human cytosolic branched-chain aminotransferase by oxidation and S-glutathionylation and its interactions with redox sensitive neuronal proteins. Biochemistry, 47(19), 5465-5479. https://doi.org/10.1021/bi800303h

Redox regulation of proteins through oxidation and S-thiolation are important regulatory processes, acting in both a protective and adaptive role in the cell. In the current study, we investigated the sensitivity of the neuronal human cytosolic branc... Read More about Regulatory control of human cytosolic branched-chain aminotransferase by oxidation and S-glutathionylation and its interactions with redox sensitive neuronal proteins.

A novel branched-chain amino acid metabolon: Protein-protein interactions in a supramolecular complex (2007)
Journal Article
Islam, M. M., Wallin, R., Wynn, R. M., Conway, M., Fujii, H., Mobley, J. A., …Hutson, S. M. (2007). A novel branched-chain amino acid metabolon: Protein-protein interactions in a supramolecular complex. Journal of Biological Chemistry, 282(16), 11893-11903. https://doi.org/10.1074/jbc.M700198200

The catabolic pathways of branched-chain amino acids have two common steps. The first step is deamination catalyzed by the vitamin B6-dependent branched-chain aminotransferase isozymes (BCATs) to produce branched-chain α-keto acids (BCKAs). The secon... Read More about A novel branched-chain amino acid metabolon: Protein-protein interactions in a supramolecular complex.

Human mitochondrial branched chain aminotransferase isozyme: Structural role of the CXXC center in catalysis (2006)
Journal Article
Conway, M., Islam, M. M., Yennawar, N. H., Islam, M. M., Conway, M. E., Wallin, R., & Hutson, S. M. (2006). Human mitochondrial branched chain aminotransferase isozyme: Structural role of the CXXC center in catalysis. Journal of Biological Chemistry, 281(51), 39660-39671. https://doi.org/10.1074/jbc.M607552200

Mammalian branched chain aminotransferases (BCATs) have a unique CXXC center. Kinetic and structural studies of three CXXC center mutants (C315A, C318A, and C315A/C318A) of human mitochondrial (hBCATm) isozyme and the oxidized hBCATm enzyme (hBCATm-O... Read More about Human mitochondrial branched chain aminotransferase isozyme: Structural role of the CXXC center in catalysis.

Structural determinants for branched-chain aminotransferase isozyme-specific inhibition by the anticonvulsant drug gabapentin (2005)
Journal Article
Yennawar, N., Goto, M., Miyahara, I., Hirotsu, K., Conway, M., Islam, M. M., & Hutson, S. M. (2005). Structural determinants for branched-chain aminotransferase isozyme-specific inhibition by the anticonvulsant drug gabapentin. Journal of Biological Chemistry, 280(44), 37246-37256. https://doi.org/10.1074/jbc.M506486200

This study presents the first three-dimensional structures of human cytosolic branched-chain aminotransferase (hBCATc) isozyme complexed with the neuroactive drug gabapentin, the hBCATc Michaelis complex with the substrate analog, 4-methylvalerate, a... Read More about Structural determinants for branched-chain aminotransferase isozyme-specific inhibition by the anticonvulsant drug gabapentin.

Roles for cysteine residues in the regulatory CXXC motif of human mitochondrial branched chain aminotransferase enzyme (2004)
Journal Article
Conway, M. E., Poole, L. B., & Hutson, S. M. (2004). Roles for cysteine residues in the regulatory CXXC motif of human mitochondrial branched chain aminotransferase enzyme. Biochemistry, 43(23), 7356-7364. https://doi.org/10.1021/bi0498050

The redox-active dithiol/disulfide C315-Xaa-Xaa-C318 center has been implicated in the regulation of the human mitochondrial branched chain aminotransferase isozyme (hBCATm) [Conway, M. E., Yennawar, N., Wallin, R., Poole, L. B., and Hutson, S. M. (2... Read More about Roles for cysteine residues in the regulatory CXXC motif of human mitochondrial branched chain aminotransferase enzyme.

Human mitochondrial branched chain aminotransferase: Structural basis for substrate specificity and role of redox active cysteines (2003)
Journal Article
Yennawar, N., Conway, M. E., Wallin, R., Poole, L. B., & Hutson, S. M. (2003). Human mitochondrial branched chain aminotransferase: Structural basis for substrate specificity and role of redox active cysteines. BBA - Proteins and Proteomics, 1647(1-2), 61-65. https://doi.org/10.1016/S1570-9639%2803%2900051-7

Crystal structures of the fold type IV pyridoxal phosphate (PLP)-dependent human mitochondrial branched chain aminotransferase (hBCATm) reaction intermediates have provided a structural explanation for the kinetically determined substrate specificity... Read More about Human mitochondrial branched chain aminotransferase: Structural basis for substrate specificity and role of redox active cysteines.

Human mitochondrial and cytosolic branched-chain aminotransferases are cysteine S-conjugate β-lyases, but turnover leads to inactivation (2003)
Journal Article
Cooper, A. J. L., Bruschi, S. A., Conway, M., & Hutson, S. M. (2003). Human mitochondrial and cytosolic branched-chain aminotransferases are cysteine S-conjugate β-lyases, but turnover leads to inactivation. Biochemical Pharmacology, 65(2), 181-192. https://doi.org/10.1016/S0006-2952%2802%2901513-7

The mitochondrial and cytosolic branched-chain aminotransferases (BCATm and BCATc) are homodimers in the fold type IV class of pyridoxal 5′-phosphate-containing enzymes that also contains D-amino acid aminotransferase and 4-amino-4-deoxychorismate ly... Read More about Human mitochondrial and cytosolic branched-chain aminotransferases are cysteine S-conjugate β-lyases, but turnover leads to inactivation.

Crystal structures of human mitochondrial branched chain aminotransferase reaction intermediates: Ketimine and pyridoxamine phosphate forms (2002)
Journal Article
Yennawar, N. H., Conway, M. E., Yennawar, H. P., Farber, G. K., & Hutson, S. M. (2002). Crystal structures of human mitochondrial branched chain aminotransferase reaction intermediates: Ketimine and pyridoxamine phosphate forms. Biochemistry, 41(39), 11592-11601. https://doi.org/10.1021/bi020221c

The three-dimensional structures of the isoleucine ketimine and the pyridoxamine phosphate forms of human mitochondrial branched chain aminotransferase (hBCATm) have been determined crystallographically at 1.9 Å resolution. The hBCATm-catalyzed trans... Read More about Crystal structures of human mitochondrial branched chain aminotransferase reaction intermediates: Ketimine and pyridoxamine phosphate forms.

A continuous 96-well plate spectrophotometric assay for branched-chain amino acid aminotransferases (2002)
Journal Article
Cooper, A. J. L., Conway, M., & Hutson, S. M. (2002). A continuous 96-well plate spectrophotometric assay for branched-chain amino acid aminotransferases. Analytical Biochemistry, 308(1), 100-105. https://doi.org/10.1016/S0003-2697%2802%2900243-9

A new, continuous 96-well plate spectrophotometric assay for the branched-chain amino acid aminotransferases is described. Transamination of L-leucine with α-ketoglutarate results in formation of α-ketoisocaproate, which is reductively aminated back... Read More about A continuous 96-well plate spectrophotometric assay for branched-chain amino acid aminotransferases.

Identification of a peroxide-sensitive redox switch at the CXXC motif in the human mitochondrial branched chain aminotransferase (2002)
Journal Article
Conway, M. E., Yennawar, N., Wallin, R., Poole, L. B., & Hutson, S. M. (2002). Identification of a peroxide-sensitive redox switch at the CXXC motif in the human mitochondrial branched chain aminotransferase. Biochemistry, 41(29), 9070-9078. https://doi.org/10.1021/bi020200i

The human mitochondrial branched chain aminotransferase isoenzyme (hBCATm) must be stored in a reducing environment to remain active. Oxidation or labeling of hBCATm with sulfhydryl reagents results in enzyme inhibition. In this study, we investigate... Read More about Identification of a peroxide-sensitive redox switch at the CXXC motif in the human mitochondrial branched chain aminotransferase.

Role of specific aminotransferases in de novo glutamate synthesis and redox shuttling in the retina (2001)
Journal Article
LaNoue, K., Berkich, D., Conway, M. E., Barber, A., Hu, L., Taylor, C., & Hutson, S. M. (2001). Role of specific aminotransferases in de novo glutamate synthesis and redox shuttling in the retina. Journal of Neuroscience Research, 66(5), 914-922

In this study aminotransferase inhibitors were used to determine the relative importance of different aminotransferases in providing nitrogen for de novo glutamate synthesis in the retina. Aminooxyacetate, which inhibits all aminotransferases, blocke... Read More about Role of specific aminotransferases in de novo glutamate synthesis and redox shuttling in the retina.

The structure of human mitochondrial branched-chain aminotransferase (2001)
Journal Article
Farber, G., Hutson, S., Yennawar, N., Conway, M., Dunbar, J., Hutson, S. M., & Farber, J. (2001). The structure of human mitochondrial branched-chain aminotransferase. Acta Crystallographica Section D: Biological Crystallography, 57(4), 506-515. https://doi.org/10.1107/S0907444901001925

X-ray crystal structures of three forms of human mitochondrial branched-chain aminotransferase were solved by molecular-replacement methods. In two of the forms the enzyme is in its active form, with the pyridoxal 5′-phosphate (PLP) cofactor covalent... Read More about The structure of human mitochondrial branched-chain aminotransferase.