PMID- 21931959 OWN - NLM STAT- MEDLINE DCOM- 20120322 LR - 20211020 IS - 1573-4919 (Electronic) IS - 0300-8177 (Linking) VI - 360 IP - 1-2 DP - 2012 Jan TI - Molecular and functional characterization of glycogen synthase in the porcine satellite cells under insulin treatment. PG - 169-80 LID - 10.1007/s11010-011-1054-4 [doi] AB - Glycogen synthase (GS) catalyzes the key step of glycogen synthesis and plays an important role in glycogen metabolism in liver and muscle. In this study, we cloned the cDNA and promoter sequences of porcine glycogen synthesis genes (GYS1 and GYS2). Expression analysis revealed that porcine GYS1 was highly expressed in the skeletal muscle and heart. GYS2 was expressed specifically in liver and subcutaneous adipose tissue. The expression level of GYS1 was up-regulated from proliferation to differentiation in the porcine satellite cells, and insulin did not significantly affect the transcription of GYS1. Insulin stimulated 72-h-differentiated satellite cells as indicated by decrease in phosphorylation of GS, but did not affect GYS1 transcription and total GS protein level, suggesting that the effect of insulin is primarily mediated via posttranscriptional control rather than regulated at the transcriptional level. Four single-nucleotide polymorphisms (SNPs) were detected in the promoter and cDNA sequences of porcine GYS1. Association analyses revealed that the GYS1 Hin6I and MvaI polymorphisms both had significant associations (P < 0.05) with pH of M. longissimus dorsi (pHLD), M. biceps femoris (pHBF) and M. semipinalis capitis (pHSC) at 45 min postmortem. These results provide useful information for further investigation on the function of glycogen synthase in porcine skeletal muscle. FAU - Wang, Linjie AU - Wang L AD - Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture, College of Animal Science, Huazhong Agricultural University, Wuhan, Hubei, People's Republic of China. FAU - Xiong, Yuanzhu AU - Xiong Y FAU - Zuo, Bo AU - Zuo B FAU - Lei, Minggang AU - Lei M FAU - Ren, Zhuqing AU - Ren Z FAU - Xu, Dequan AU - Xu D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110920 PL - Netherlands TA - Mol Cell Biochem JT - Molecular and cellular biochemistry JID - 0364456 RN - 0 (Insulin) RN - EC 2.4.1.11 (Glycogen Synthase) SB - IM MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Cells, Cultured MH - Enzyme Activation MH - Female MH - Gene Expression MH - Gene Expression Regulation MH - Gene Frequency MH - Genetic Association Studies MH - Glycogen Synthase/genetics/*metabolism MH - Insulin/*pharmacology/physiology MH - Liver/enzymology MH - Male MH - Meat/standards MH - Molecular Sequence Data MH - Muscle, Skeletal/cytology/enzymology MH - Myocardium/enzymology MH - Organ Specificity MH - Phosphorylation MH - Polymorphism, Single Nucleotide MH - Promoter Regions, Genetic MH - Satellite Cells, Skeletal Muscle/drug effects/*enzymology MH - Sequence Analysis, DNA MH - Subcutaneous Fat/enzymology MH - *Sus scrofa EDAT- 2011/09/21 06:00 MHDA- 2012/03/23 06:00 CRDT- 2011/09/21 06:00 PHST- 2011/06/13 00:00 [received] PHST- 2011/09/08 00:00 [accepted] PHST- 2011/09/21 06:00 [entrez] PHST- 2011/09/21 06:00 [pubmed] PHST- 2012/03/23 06:00 [medline] AID - 10.1007/s11010-011-1054-4 [doi] PST - ppublish SO - Mol Cell Biochem. 2012 Jan;360(1-2):169-80. doi: 10.1007/s11010-011-1054-4. Epub 2011 Sep 20.