>3qna_E mol:protein length:141 6-carboxy-5,6,7,8-tetrahydropterin synthaseMGSSHHHHHHSSGLVPRGSHMMSTTLFKDFTFEAAHRLPHVPEGHKAGRLHGHSFMVRLEITGEVDPHTGWIIDFAELKAAFKPTYERLDHHYLNDIPGLENPTSEVLAKWIWDQVKPVVPLLSAVMVKETCTAGCIYRGE