5KH0

Crystal Structure of HydF from thermosipho melanesiensis in complex with a [4Fe-4S] cluster

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	GTP_HydF_1st	e5kh0A2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_1st	ECOD (1.6)
A	GTP_HydF_2nd	e5kh0A1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_2nd	ECOD (1.6)
A	MnmE_helical_2nd	e5kh0A3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: MnmE_helical_2nd	ECOD (1.6)
B	GTP_HydF_1st	e5kh0B3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_1st	ECOD (1.6)
B	GTP_HydF_2nd	e5kh0B1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_2nd	ECOD (1.6)
B	MnmE_helical_2nd	e5kh0B2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: MnmE_helical_2nd	ECOD (1.6)
C	GTP_HydF_1st	e5kh0C2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_1st	ECOD (1.6)
C	GTP_HydF_2nd	e5kh0C1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_2nd	ECOD (1.6)
C	MnmE_helical_2nd	e5kh0C3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: MnmE_helical_2nd	ECOD (1.6)
D	GTP_HydF_1st	e5kh0D2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_1st	ECOD (1.6)
D	GTP_HydF_2nd	e5kh0D1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: GTP_HydF_2nd	ECOD (1.6)
D	MnmE_helical_2nd	e5kh0D3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: MnmE_helical_2nd	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
A	3.40.50.11420	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	3.40.50.11410	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B	3.40.50.11420	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	3.40.50.11410	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
C	3.40.50.11420	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
C	3.40.50.11410	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
D	3.40.50.11420	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
D	3.40.50.11410	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF18133	Hydrogen maturase F tetramerization domain (HydF_tetramer)	Hydrogen maturase F tetramerization domain	This is the C-terminal domain found in Hydrogen maturase F (HydF) present in Thermotoga neapolitana. HydF is a GTPase, containing an FeS cluster-binding motif, that is able to are able to activate HydA produced so that HydA can drive the reversible r ...	This is the C-terminal domain found in Hydrogen maturase F (HydF) present in Thermotoga neapolitana. HydF is a GTPase, containing an FeS cluster-binding motif, that is able to are able to activate HydA produced so that HydA can drive the reversible reduction of protons to molecular H2. This domain is known as domain III, and is primarily responsible for homotetramer formation. Interactions between the two FeS cluster-binding domains worth noting are the interactions between beta-2 strands, the initial part of the long loop that connects strand beta-2 to strand beta-3, and the loop that connects strand beta-1 to helix alpha-3. There are three highly conserved cysteine residues (Cys-302, Cys-353, and Cys-356) that represent the FeS cluster-binding site which form a superficial pocket [1].	Domain
A, B, C, D	PF01926	50S ribosome-binding GTPase (MMR_HSR1)	50S ribosome-binding GTPase	-	Family
A, B, C, D	PF18128	Hydrogen maturase F dimerization domain (HydF_dimer)	Hydrogen maturase F dimerization domain	This domain is found in Hydrogen maturase F (HydF) present in Thermotoga neapolitana. HydF is a GTPase, containing an FeS cluster-binding motif, that is able to are able to activate HydA produced so that HydA can drive the reversible reduction of pro ...	This domain is found in Hydrogen maturase F (HydF) present in Thermotoga neapolitana. HydF is a GTPase, containing an FeS cluster-binding motif, that is able to are able to activate HydA produced so that HydA can drive the reversible reduction of protons to molecular H2. This domain, referred to as domain II, is responsible for HydF dimerization through the formation of a continuous beta-sheet comprising eight beta-strands from two monomers [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Small GTP-binding protein	iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding cation binding metal ion binding	RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process tRNA processing RNA processing tRNA modification primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process macromolecule methylation tRNA metabolic process RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process tRNA processing RNA processing tRNA modification primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process macromolecule methylation tRNA metabolic process RNA modification biosynthetic process methylation macromolecule modification metabolic process cellular process macromolecule metabolic process RNA methylation tRNA methylation tRNA wobble uridine modification tRNA wobble base modification	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR005225	Small GTP-binding domain	Domain
A, B, C, D	IPR041606	Hydrogen maturase F dimerization domain	Domain
A, B, C, D	IPR023873	[FeFe]-hydrogenase H-cluster maturation GTPase HydF	Family
A, B, C, D	IPR040644	Hydrogen maturase F, tetramerization domain	Domain
A, B, C, D	IPR006073	GTP binding domain	Domain
A, B, C, D	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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.