Protein
5-methylthioadenosine/S-adenosylhomocysteine deaminase
Organism
Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)
Function
Catalyzes the deamination of 5-methylthioadenosine and S-adenosyl-L-homocysteine into 5-methylthioinosine and S-inosyl-L-homocysteine, respectively. Is also able to deaminate adenosine. Adenosine-5-monophosphate (AMP) and S-adenosyl-L-methionine (SAM) are not enzyme substrates.
Similarity
Belongs to the metallo-dependent hydrolases superfamily. MTA/SAH deaminase family.
Sequence
MIIGNCLILKDFSSEPFWGAVEIENGTIKRVLQGEVKVDLDLSGKLVMPALFNTHTHAPMTLLRGVAEDLSFEEWLFSKVLPIEDRLTEKMAYYGTILAQMEMARHGIAGFVDMYFHEEWIAKAVRDFGMRALLTRGLVDSNGDDGGRLEENLKLYNEWNGFEGRIFVGFGPHSPYLCSEEYLKRVFDTAKSLNAPVTIHLYETSKEEYDLEDILNIGLKEVKTIAAHCVHLPERYFGVLKDIPFFVSHNPASNLKLGNGIAPVQRMIEHGMKVTLGTDGAASNNSLNLFFEMRLASLLQKAQNPRNLDVNTCLKMVTYDGAQAMGFKSGKIEEGWNADLVVIDLDLPEMFPVQNIKNHLVHAFSGEVFATMVAGKWIYFDGEYPTIDSEEVKRELARIEKELYSS