A bioinformatics study on characteristics, metabolic pathways, and cellular functions of the identified S-nitrosylated proteins in postmortem pork muscle. 
This study aimed to determine the characteristics, metabolic pathways and cellular functions of S-nitrosylated proteins from pork postmortem muscle using bioinformatics analysis.  The results showed that S-nitrosylated proteins had a broad range of molecular weight and pI value and were mainly located in the functional region of secondary structure.  The motif revealed the lysine (K) positioned at -5, -7, +1 and +5 through the S-nitrosocysteine while "C-X-X-C" was identified as the motif for non-S-nitrosylation-modified cysteine.  The proteins were widely localized in cell compartments and mostly belonged to enzymes participating in the metabolic process.  Glycolysis was the most significant pathways of S-nitrosylated proteins in postmortem muscle.  The cell death of muscle cells was predicted to be inhibited by S-nitrosylation with the potential influence on the apoptosis.  Those identified pathways and cellular functions of S-nitrosylation are proposed to have a profound influence on meat quality and should be highly regarded.