PMID- 22469996 OWN - NLM STAT- MEDLINE DCOM- 20120907 LR - 20211021 IS - 1096-0309 (Electronic) IS - 0003-2697 (Print) IS - 0003-2697 (Linking) VI - 425 IP - 2 DP - 2012 Jun 15 TI - Human skeletal muscle fiber type specific protein content. PG - 175-82 LID - 10.1016/j.ab.2012.03.018 [doi] AB - The aim of this project was to develop a method to assess fiber type specific protein content across the continuum of human skeletal muscle fibers. Individual vastus lateralis muscle fibers (n = 264) were clipped into two portions: one for sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) fiber typing and one for Western blot protein identification. Following fiber type determination, fiber segments were combined into fiber type specific pools ( approximately 20 fibers/pool) and measured for total protein quantity, glyceraldehyde 3-phosphate dehydrogenase (GAPDH), citrate synthase (CS), and total p38 content. GAPDH content was 64, 54, 160, and 138% more abundant in myosin heavy chain (MHC) I/IIa, MHC IIa, MHC IIa/IIx, and MHC IIx fibers, respectively, when compared with MHC I. Inversely, CS content was 528, 472, 242, and 47% more abundant in MHC I, MHC I/IIa, MHC IIa, and MHC IIa/IIx fibers, respectively, when compared with MHC IIx. Total p38 content was 87% greater in MHC IIa versus MHC I fibers. These data and this approach establish a reliable method for human skeletal muscle fiber type specific protein analysis. Initial results show that particular proteins exist in a hierarchal fashion throughout the continuum of human skeletal muscle fiber types, further highlighting the necessity of fiber type specific analysis. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Galpin, Andrew J AU - Galpin AJ AD - Human Performance Laboratory, Ball State University, Muncie, IN 47306, USA. FAU - Raue, Ulrika AU - Raue U FAU - Jemiolo, Bozena AU - Jemiolo B FAU - Trappe, Todd A AU - Trappe TA FAU - Harber, Matthew P AU - Harber MP FAU - Minchev, Kiril AU - Minchev K FAU - Trappe, Scott AU - Trappe S LA - eng GR - R01 AG038576/AG/NIA NIH HHS/United States GR - AG038576/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20120330 PL - United States TA - Anal Biochem JT - Analytical biochemistry JID - 0370535 RN - 0 (Proteins) RN - EC 1.2.1.- (Glyceraldehyde-3-Phosphate Dehydrogenases) RN - EC 2.3.3.1 (Citrate (si)-Synthase) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - EC 3.6.4.1 (Myosin Heavy Chains) SB - IM MH - *Blotting, Western MH - Citrate (si)-Synthase/analysis MH - *Electrophoresis, Polyacrylamide Gel MH - Glyceraldehyde-3-Phosphate Dehydrogenases/analysis MH - Humans MH - Muscle Fibers, Skeletal/*metabolism MH - Myosin Heavy Chains/metabolism MH - Proteins/*analysis MH - p38 Mitogen-Activated Protein Kinases/analysis PMC - PMC3358799 MID - NIHMS373857 EDAT- 2012/04/04 06:00 MHDA- 2012/09/08 06:00 PMCR- 2013/06/15 CRDT- 2012/04/04 06:00 PHST- 2011/12/12 00:00 [received] PHST- 2012/02/28 00:00 [revised] PHST- 2012/03/22 00:00 [accepted] PHST- 2012/04/04 06:00 [entrez] PHST- 2012/04/04 06:00 [pubmed] PHST- 2012/09/08 06:00 [medline] PHST- 2013/06/15 00:00 [pmc-release] AID - S0003-2697(12)00192-3 [pii] AID - 10.1016/j.ab.2012.03.018 [doi] PST - ppublish SO - Anal Biochem. 2012 Jun 15;425(2):175-82. doi: 10.1016/j.ab.2012.03.018. Epub 2012 Mar 30.