>sp|A4FH01|T23O_SACEN Tryptophan 2,3-dioxygenase OS=Saccharopolyspora erythraea GN=kynA MVHGNSRPLEKDVVRDLRRELSYGQYLRLDRLLDAQHPVSEPEHHDELLFIIQHQTVELW LKLILHELRTAREHLARDELKPALKQLARVKHVQHTLTEQWSVLATLTPAEYVEFRGFLG RSSGFQSYQYRAIELILGNKNAEMLEVFAHDEFAHELLNGLLKEPSVYDEFVRLLHRRGH DVPAAFLQRDVSLPHTFTPELVPLFRGIYETAAENWDAYEACEELVDLEENFQFWRFRHL KTVERTIGLKHGTGGSSGVSFLRRALELTFFPELYAVRTEI