##gff-version 3
Q4UKI6	UniProtKB	Chain	1	138	.	.	.	ID=PRO_0000272631;Note=6-carboxy-5%2C6%2C7%2C8-tetrahydropterin synthase	
Q4UKI6	UniProtKB	Active site	23	23	.	.	.	Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	14	14	.	.	.	Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	27	27	.	.	.	Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	29	29	.	.	.	Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	49	49	.	.	.	Note=In chain A;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	50	50	.	.	.	Note=In chain A;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	51	51	.	.	.	Note=In chain A;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	68	68	.	.	.	Note=In chain C;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Binding site	101	101	.	.	.	Note=In chain B;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Site	51	51	.	.	.	Note=Key residue that determines the differing bacterial enzyme with CTPS activity from the mammalian homolog with PTPS (6-pyruvoyltetrahydropterin synthase) activity;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870	
Q4UKI6	UniProtKB	Site	68	68	.	.	.	Note=Increases basicity of active site Cys;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:P65870