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SOMT1

Gene
SOMT1
Protein
Scoulerine-9-O-methyltransferase 1
Organism
Papaver somniferum
Length
390 amino acids
Function
Methyltransferase involved in the biosynthesis of the benzylisoquinoline alkaloid noscapine (PubMed:22535422, PubMed:22653730, PubMed:29610307). Catalyzes the conversion of (S)-scoulerine to (S)-tetrahydrocolumbamine (PubMed:22535422, PubMed:22653730). Can convert (S)-tetrahydrocolumbamine to tetrahydropalmatine (PubMed:22535422). Can convert (S)-norreticuline to (S)-norcodamine (PubMed:22535422). Can convert (S)-reticuline to (S)-codamine (PubMed:22535422). Substrate preference is (S)-scoulerine > (S)-tetrahydrocolumbamine > (S)-norreticuline > (S)-reticuline (PubMed:22535422).
Similarity
Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family. COMT subfamily.
Mass
42.699 kDa
Sequence
MATNGEIFNTYGHNRQTATVTKITASNESSNGVCYLSETANLGKLICIPMALRAAMELNVFQLISKFGTDAKVSASEIASKMPNAKNNPEAAMYLDRILRLLGASSILSVSTTKKSINRGGDDVVVHEKLYGLTNSSCCLVPRQEDGVSLVEELLFTSDKVVVDSFFKLKCVVEEKDSVPFEVAHGAKIFEYAATEPRMNQVFNDGMAVFSIVVFEAVFRFYDGFLDMKELLDVGGGIGTSVSKIVAKYPLIRGVNFDLPHVISVAPQYPGVEHVAGDMFEEVPKGQNMLLKWVLHDWGDERCVKLLKNCWNSLPVGGKVLIIEFVLPNELGNNAESFNALIPDLLLMALNPGGKERTISEYDDLGKAAGFIKTIPIPISNGLHVIEFHK