PMID- 20609906 OWN - NLM STAT- MEDLINE DCOM- 20101029 LR - 20211020 IS - 1557-7988 (Electronic) IS - 0076-6879 (Linking) VI - 474 DP - 2010 TI - Detection of protein thiols in mitochondrial oxidative phosphorylation complexes and associated proteins. PG - 83-108 LID - 10.1016/S0076-6879(10)74006-4 [doi] AB - The ability to detect and identify mitochondrial proteins that are sensitive to oxidative modification and inactivation by reactive species is important in understanding the molecular mechanisms responsible for mitochondrial dysfunction and tissue injury. In particular, cysteine residues play critical roles in maintaining the functional and structural integrity of numerous proteins in the mitochondrion and throughout the cell. To define changes in mitochondrial protein thiol status, proteomic approaches have been developed in which unmodified, reduced thiols (i.e., R-SH or thiolate species R-S(-)) are tagged with thiol-labeling reagents that can be visualized following gel electrophoresis and immunoblotting techniques. Herein, we describe the use of one thiol-labeling approach in combination with blue native gel electrophoresis (BN-PAGE) to detect reactive thiol groups within mitochondrial proteins including those of the oxidative phosphorylation (OxPhos) system. Labeling or "tagging" of protein thiol groups in combination with various gel electrophoresis and proteomics techniques is a valuable way to measure alterations in cellular or organelle thiol proteomes in response to drug treatment, disease state, or metabolic/oxidative stress. CI - Copyright (c) 2010 Elsevier Inc. All rights reserved. FAU - Andringa, Kelly K AU - Andringa KK AD - Department of Environmental Health Sciences, Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA. FAU - Bailey, Shannon M AU - Bailey SM LA - eng GR - P30 AR050948/AR/NIAMS NIH HHS/United States GR - DK73775/DK/NIDDK NIH HHS/United States GR - P30 DK74038/DK/NIDDK NIH HHS/United States GR - P50 AT00477/AT/NCCIH NIH HHS/United States GR - R01 AA015172/AA/NIAAA NIH HHS/United States GR - S10 RR13795/RR/NCRR NIH HHS/United States GR - R21 DK073775/DK/NIDDK NIH HHS/United States GR - P30 CA13148/CA/NCI NIH HHS/United States GR - U54 CA100949/CA/NCI NIH HHS/United States GR - AA15172/AA/NIAAA NIH HHS/United States GR - S10 RR11329/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20100620 PL - United States TA - Methods Enzymol JT - Methods in enzymology JID - 0212271 RN - 0 (Mitochondrial Proteins) RN - 0 (Sulfhydryl Compounds) SB - IM MH - Animals MH - Electrophoresis, Polyacrylamide Gel MH - Humans MH - Immunoblotting MH - Mass Spectrometry MH - Mitochondria, Liver/enzymology MH - Mitochondrial Proteins/*chemistry MH - Oxidative Phosphorylation MH - Proteomics MH - *Staining and Labeling/methods MH - Sulfhydryl Compounds/*analysis/chemistry EDAT- 2010/07/09 06:00 MHDA- 2010/10/30 06:00 CRDT- 2010/07/09 06:00 PHST- 2010/07/09 06:00 [entrez] PHST- 2010/07/09 06:00 [pubmed] PHST- 2010/10/30 06:00 [medline] AID - S0076-6879(10)74006-4 [pii] AID - 10.1016/S0076-6879(10)74006-4 [doi] PST - ppublish SO - Methods Enzymol. 2010;474:83-108. doi: 10.1016/S0076-6879(10)74006-4. Epub 2010 Jun 20.