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The posttranslational cross-linking of a tyrosine residue to a tryptophan residue and a methionine residue to form S-[5'-(L-tryptoph-6'-yl)-L-tyrosin-3'-yl]-L-methionin-S-ium. The oxidation of peptidyl-L-methionine to peptidyl-L-methionine sulfone. The formation of a C-terminal peptidyl-methionine amide by hydrolysis and oxidation of an interior Met-Gly peptide in a secreted protein. The acetylation of the N-terminal methionine of proteins to form the derivative N-acetyl-L-methionine. The formation of a 2-keto-5-iminopiperazine protein chromophore cross-link from the alpha-amino nitrogen of residue n, a methionine, to the alpha-carboxyl carbon of residue n+1, a tyrosine, and a dehydration to form a double bond to the alpha-amino nitrogen of residue n+2. This cross-linking is coupled with a dehydrogenation of residue n+1 to form a double bond between the alpha and beta carbons. The alteration of an amino acid residue in a peptide. The formation of the fluorescent protein FP611 chromophore cross-link from the alpha-carboxyl carbon of residue n, a methionine, to the alpha-amino nitrogen of residue n+2, a glycine, and a dehydration to form a double bond to the alpha-amino nitrogen of residue n+1. This cross-linking is coupled with a dehydrogenation of residue n+1 to form a double bond between the alpha and beta carbons. This modification is found in the GFP-like fluorescent chromoprotein from the sea anemone Entacmaea quadricolor. The covalent linkage of heme to peroxidase via dihydroxyheme-L-aspartyl ester-L-glutamyl ester-L-methionine sulfonium. The methylation of the N-terminal methionine of proteins to form the derivative N-methyl-L-methionine. The modification of peptidyl-methionine. The carboxylation of the N-terminal methionine of proteins to form the derivative N-carboxy-L-methionine. The covalent alteration of one or more amino acids occurring in proteins, peptides and nascent polypeptides (co-translational, post-translational modifications). Includes the modification of charged tRNAs that are destined to occur in a protein (pre-translation modification).

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: peptidyl-methionine modification
Acc: GO:0018206
Aspect: Biological Process
Desc: The modification of peptidyl-methionine.
Proteins in PDR annotated with:
   This term: 4 [Search]
   Term or descendants: 16 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0018206 - peptidyl-methionine modification (interactive image map)
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