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FN1419

Gene
FN1419
Protein
L-methionine gamma-lyase
Organism
Fusobacterium nucleatum subsp. nucleatum (strain ATCC 25586 / CIP 101130 / JCM 8532 / LMG 13131)
Length
395 amino acids
Function
Catalyzes the alpha,gamma-elimination of L-methionine to produce methanethiol, 2-oxobutanoate and ammonia, and that of L-homocysteine (By similarity). Can also use L-cysteine as substrate, catalyzing its alpha,beta-elimination; this activity seems to only minimally contribute to the production of hydrogen sulfide (H2S) by F.nucleatum in the oral cavity, which is toxic for a large variety of cells in periodontal regions (PubMed:21798982).
Similarity
Belongs to the trans-sulfuration enzymes family. L-methionine gamma-lyase subfamily.
Mass
43.306 kDa
Sequence
MEMKKSGLGTTAIHAGTLKNLYGTLAMPIYQTSTFIFDSAEQGGRRFALEEAGYIYTRLGNPTTTVLENKIAALEEGEAGIAMSSGMGAISSTLWTVLKAGDHVVTDKTLYGCTFALMNHGLTRFGVEVTFVDTSNLEEVKNAMKKNTRVVYLETPANPNLKIVDLEALSKIAHTNPNTLVIVDNTFATPYMQKPLKLGVDIVVHSATKYLNGHGDVIAGLVVTRQELADQIRFVGLKDMTGAVLGPQEAYYIIRGLKTFEIRMERHCKNARTIVDFLNKHPKVEKVYYPGLETHPGYEIAKKQMKDFGAMISFELKGGFEAGKTLLNNLKLCSLAVSLGDTETLIQHPASMTHSPYTKEEREVAGITDGLVRLSVGLENVEDIIADLEQGLEKI