Annotations: 3QDF

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cg1458 N-terminal domain-like	8044767	4004122	SCOP2 (2022-06-29)
A	SCOP2 Family	FAH	8052526	4002580	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FAH N-terminal domain-like	8052525	3001866	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FAH	8052527	3001446	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	FAA_hydrolase	e3qdfA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: FAH (From Topology)	T: FAH	F: FAA_hydrolase	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.30.370	Mainly Beta	Roll	SH3 type barrels.	FAH	CATH (4.3.0)
A	3.90.850.10	Alpha Beta	Alpha-Beta Complex	Fumarylacetoacetate hydrolase	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01557	Fumarylacetoacetate (FAA) hydrolase C-terminal (FAA_hydrolase)	Fumarylacetoacetate (FAA) hydrolase C-terminal	This entry consists of fumarylacetoacetate (FAA) hydrolase, or fumarylacetoacetate hydrolase (FAH) and it also includes HHDD isomerase/OPET decarboxylase from E. coli strain W. FAA is the last enzyme in the tyrosine catabolic pathway, it hydroly ...	This entry consists of fumarylacetoacetate (FAA) hydrolase, or fumarylacetoacetate hydrolase (FAH) and it also includes HHDD isomerase/OPET decarboxylase from E. coli strain W. FAA is the last enzyme in the tyrosine catabolic pathway, it hydrolyses fumarylacetoacetate into fumarate and acetoacetate which then join the citric acid cycle [1]. Mutations in FAA cause type I tyrosinemia in humans this is an inherited disorder mainly affecting the liver leading to liver cirrhosis, hepatocellular carcinoma, renal tubular damages and neurologic crises amongst other symptoms [1]. The enzymatic defect causes the toxic accumulation of phenylalanine/tyrosine catabolites [3]. The E. coli W enzyme HHDD isomerase/OPET decarboxylase contains two copies of this domain and functions in fourth and fifth steps of the homoprotocatechuate pathway; here it decarboxylates OPET to HHDD and isomerises this to OHED. The final products of this pathway are pyruvic acid and succinic semialdehyde. This family also includes various hydratases and 4-oxalocrotonate decarboxylases which are involved in the bacterial meta-cleavage pathways for degradation of aromatic compounds. 2-hydroxypentadienoic acid hydratase encoded by mhpD in E. coli Swiss:P77608 is involved in the phenylpropionic acid pathway of E. coli and catalyses the conversion of 2-hydroxy pentadienoate to 4-hydroxy-2-keto-pentanoate and uses a Mn2+ co-factor [5]. OHED hydratase encoded by hpcG in E. coli Swiss:P42270 is involved in the homoprotocatechuic acid (HPC) catabolism [6]. XylI in P. putida Swiss:P49155 is a 4-Oxalocrotonate decarboxylase [7].	Domain
A	PF10370	Rv2993c-like, N-terminal (Rv2993c-like_N)	Rv2993c-like, N-terminal	This is the N-terminal 50 amino acids of a group of bacterial proteins annotated as fumarylacetoacetate hydrolase-containing enzymes, including Rv2993c from Mycobacterium tuberculosis. In most cases members are associated with FAA_hydrolase Pfam:PF01 ...	This is the N-terminal 50 amino acids of a group of bacterial proteins annotated as fumarylacetoacetate hydrolase-containing enzymes, including Rv2993c from Mycobacterium tuberculosis. In most cases members are associated with FAA_hydrolase Pfam:PF01557 further towards the C-terminus.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	2-hydroxyhepta-2,4-diene-1,7-dioate isomerase	isomerase activity catalytic activity hydrolase activity, acting on acid carbon-carbon bonds hydrolase activity acetylpyruvate hydrolase activity hydrolase activity, acting on acid carbon-carbon bonds, in ketonic substances cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036663	Fumarylacetoacetase-like, C-terminal domain superfamily	Homologous Superfamily
A	IPR011234	Fumarylacetoacetase-like, C-terminal	Domain
A	IPR018833	Rv2993c-like, N-terminal	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.