>6y21_B mol:protein length:514 Cystathionine beta-synthaseMNGKFADGPYSGILDSVLDAIGNTPMVRMKRLAKVYGLECDLLAKCEFMSAGGSVKDRIGKAMVEKAEREGRLKAGDTLIEPTSGNTGIGLALAAAVRGYRMIVTMPAKMSAEKSNIMKCLGAEIVRTPTEAAWNDENSHMGVAAKLQRELENAHILDQYNNTANPMVHYDVTAEEIITQCDGDIDMVVIGAGTGGTITGIGRKIKERCPKCKVVGVDPKGSILAVPDSLNDEKRLQSYEVEGIGYDFVPGVLDRKVVDEWVKVGDAESFTTARAIIRNEGLFVGGSSGANVWGALQAARQLKKGQKCVVLLPDSSRNYMSKFISDEWMAEHGFAPEDGAKVKEREKQFGGARIRDLLSETGATSDVPFVTARLSVEDVIKMMHETKVKEVIVTEDSEADGKTKLVGVLSEDHIAHSLQSGRCAMQSPVKDIAFKKLAKALPSAYLRDVAKALDFSPYVCVMDEKPSTKKQAGMGEHERAKISLRKAGNSRECPHFLGVITRIDLLHWLATKQK