>sp|O05393|MCCA_BACSU O-acetylserine dependent cystathionine beta-synthase OS=Bacillus subtilis GN=mccA MTVITDITELIGNTPLLRLKNFDVPEGVAVYAKLEMMNPGGSIKDRLGDMLIRDALDSGK VKPGGVIIEATAGNTGIGLALSARKYGLKAIFCVPEHFSREKQQIMQALGASIIHTPRQD GMQGAIQKAIQLETEIENSYCVLQFKNRVNPSTYYKTLGPEMWEALDGNIHTFVAGAGSG GTFAGTASFLKEKNPAVKTVIVEPVGSILNGGEPHAHKTEGIGMEFIPDYMDKSHFDEIY TVTDENAFRLVKEAAEKEGLLIGSSSGAALYAALEEAKKASAGTNIVTVFPDSSDRYISK QIYEGGI