>6z80_N mol:protein length:87 GTP cyclohydrolase 1 feedback regulatory proteinGSHMPYLLISTQIRMEVGPTMVGDEQSDPELMQHLGASKRRALGNNFYEYYVDDPPRIVLDKLERRGFRVLSMTGVGQTLVWCLHKE