>2nsh_A mol:protein length:169 Phosphoribosylaminoimidazole carboxylase catalytic subunitMSSRNNPARVAIVMGSKSDWATMQFAAEIFEILNVPHHVEVVSAQRTPDKLFSFAESAEENGYQVIIAGAGGAAHLPGMIAAKTLVPVLGVPVQSAALSGVDSLYSIVQMPRGIPVGTLAIGKAGAANAALLAAQILATHDKELHQRLNDWRKAQTDEVLENPDPRGAA