Protein
Ergothioneine biosynthesis protein 1
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Function
Catalyzes the SAM-dependent triple methylation of the alpha-amino group of histidine to form hercynine and subsequent conjugation with cysteine and oxygen to form hercynylcysteine sulfoxide, the first two steps in the biosynthesis pathway of ergothioneine (PubMed:24828577). May play a role in meiosis (PubMed:16303567).
Similarity
In the C-terminal section; belongs to the EgtB family.
Sequence
MTEIENIGALEVLFSPESIEQSLKRCQLPSTLLYDEKGLRLFDEITNLKEYYLYESELDILKKFSDSIANQLLSPDLPNTVIELGCGNMRKTKLLLDAFEKKGCDVHFYALDLNEAELQKGLQELRQTTNYQHVKVSGICGCFERLLQCLDRFRSEPNSRISMLYLGASIGNFDRKSAASFLRSFASRLNIHDNLLISFDHRNKAELVQLAYDDPYRITEKFEKNILASVNAVFGENLFDENDWEYKSVYDEDLGVHRAYLQAKNEVTVIKGPMFFQFKPSHLILIEESWKNSDQECRQIIEKGDFKLVSKYESTIADYSTYVITKQFPAMLQLPLQPCPSLAEWDALRKVWLFITNKLLNKDNMYTAWIPLRHPPIFYIGHVPVFNDIYLTKIVKNKATANKKHFWEWFQRGIDPDIEDPSKCHWHSEVPESWPSPDQLREYEKESWEYHIVKLCKAMDELSTSEKRILWLCYEHVAMHVETTLYIYVQSFQNANQTVSICGSLPEPAEKLTKAPLWVNVPETEIAVGMPLTTQYTSVGSNLQSSDLSAHENTDELFYFAWDNEKPMRKKLVSSFSIANRPISNGEYLDFINKKSKTERVYPKQWAEIDGTLYIRTMYGLLPLDDYLGWPVMTSYDDLNNYASSQGCRLPTEDELNCFYDRVLERTDEPYVSTEGKATGFQQLHPLALSDNSSNQIFTGAWEWTSTVLEKHEDFEPEELYPDYTRDFFDGKHNVVLGGSFATATRISNRRSFRNFYQAGYKYAWIGARLVKN