>6vvm_A mol:protein length:123 4-oxalocrotonate tautomerase family enzymePTLEVYLPQGHSDERKASLIDGLTRATVDAIGAPAESVRILLTELPVSNIGLGGKPTPAALPVIIAILIAGRTEAQKEALIAHLSETSASVLDVSLQSTRVMIKDIPNTDFGLGGKTARALGR