Annotations: 4UCQ

Structure of the T18D small subunit mutant of D. fructosovorans NiFe- hydrogenase

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
F [auth S]	d4ucqs_	Multi-domain proteins (alpha and beta)	HydB/Nqo4-like	HydB/Nqo4-like	Nickel-iron hydrogenase, large subunit	automated matches	(Solidesulfovibrio fructosivorans ) [TaxId: 878 ],	SCOPe (2.08)
E [auth R]	d4ucqr_	Multi-domain proteins (alpha and beta)	HydB/Nqo4-like	HydB/Nqo4-like	Nickel-iron hydrogenase, large subunit	automated matches	(Solidesulfovibrio fructosivorans ) [TaxId: 878 ],	SCOPe (2.08)
D [auth Q]	d4ucqq_	Multi-domain proteins (alpha and beta)	HydB/Nqo4-like	HydB/Nqo4-like	Nickel-iron hydrogenase, large subunit	automated matches	(Solidesulfovibrio fructosivorans ) [TaxId: 878 ],	SCOPe (2.08)
C	d4ucqc_	Multi-domain proteins (alpha and beta)	HydA/Nqo6-like	HydA/Nqo6-like	Nickel-iron hydrogenase, small subunit	automated matches	(Solidesulfovibrio fructosivorans ) [TaxId: 878 ],	SCOPe (2.08)
B	d4ucqb_	Multi-domain proteins (alpha and beta)	HydA/Nqo6-like	HydA/Nqo6-like	Nickel-iron hydrogenase, small subunit	automated matches	(Solidesulfovibrio fructosivorans ) [TaxId: 878 ],	SCOPe (2.08)
A	d4ucqa_	Multi-domain proteins (alpha and beta)	HydA/Nqo6-like	HydA/Nqo6-like	Nickel-iron hydrogenase, small subunit	automated matches	(Solidesulfovibrio fructosivorans ) [TaxId: 878 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F [auth S]	SCOP2B Superfamily	HydB/Nqo4-like	8037575	3001849	SCOP2B (2022-06-29)
E [auth R]	SCOP2B Superfamily	HydB/Nqo4-like	8037575	3001849	SCOP2B (2022-06-29)
D [auth Q]	SCOP2B Superfamily	HydB/Nqo4-like	8037575	3001849	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Nqo6/HydA N-terminal domain-like	8054419	3002291	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	HydA C-terminal domain-like	8037588	3001861	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nqo6/HydA N-terminal domain-like	8054419	3002291	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	HydA C-terminal domain-like	8037588	3001861	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nqo6/HydA N-terminal domain-like	8054419	3002291	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	HydA C-terminal domain-like	8037588	3001861	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth S]	Thymidylat_synt	e4ucqS1	A: beta barrels	X: Four-helical up-and-down bundle	H: Thymidylate synthase/dCMP hydroxymethylase	T: Thymidylate synthase/dCMP hydroxymethylase	F: Thymidylat_synt	ECOD (v294.2)
E [auth R]	Polyoma_coat	e4ucqR1	A: beta barrels	X: Four-helical up-and-down bundle	H: Thymidylate synthase/dCMP hydroxymethylase	T: Thymidylate synthase/dCMP hydroxymethylase	F: Polyoma_coat	ECOD (v294.2)
D [auth Q]	Thymidylat_synt	e4ucqQ1	A: beta barrels	X: Four-helical up-and-down bundle	H: Thymidylate synthase/dCMP hydroxymethylase	T: Thymidylate synthase/dCMP hydroxymethylase	F: Thymidylat_synt	ECOD (v294.2)
C	Thymidylat_synt	e4ucqC1	A: beta barrels	X: Four-helical up-and-down bundle	H: Thymidylate synthase/dCMP hydroxymethylase	T: Thymidylate synthase/dCMP hydroxymethylase	F: Thymidylat_synt	ECOD (v294.2)
B	Thymidylat_synt	e4ucqB1	A: beta barrels	X: Four-helical up-and-down bundle	H: Thymidylate synthase/dCMP hydroxymethylase	T: Thymidylate synthase/dCMP hydroxymethylase	F: Thymidylat_synt	ECOD (v294.2)
A	Thymidylat_synt	e4ucqA1	A: beta barrels	X: Four-helical up-and-down bundle	H: Thymidylate synthase/dCMP hydroxymethylase	T: Thymidylate synthase/dCMP hydroxymethylase	F: Thymidylat_synt	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F [auth S]	1.10.645.10	Mainly Alpha	Orthogonal Bundle	Cytochrome-c3 Hydrogenase	chain B	CATH (4.3.0)
E [auth R]	1.10.645.10	Mainly Alpha	Orthogonal Bundle	Cytochrome-c3 Hydrogenase	chain B	CATH (4.3.0)
D [auth Q]	1.10.645.10	Mainly Alpha	Orthogonal Bundle	Cytochrome-c3 Hydrogenase	chain B	CATH (4.3.0)
C	3.40.50.700	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NADH:ubiquinone oxidoreductase-like, 20kDa subunit	CATH (4.3.0)
C	4.10.480.10	Few Secondary Structures	Irregular	Cytochrome-c3 Hydrogenase	Chain A, domain 2	CATH (4.3.0)
B	3.40.50.700	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NADH:ubiquinone oxidoreductase-like, 20kDa subunit	CATH (4.3.0)
B	4.10.480.10	Few Secondary Structures	Irregular	Cytochrome-c3 Hydrogenase	Chain A, domain 2	CATH (4.3.0)
A	3.40.50.700	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NADH:ubiquinone oxidoreductase-like, 20kDa subunit	CATH (4.3.0)
A	4.10.480.10	Few Secondary Structures	Irregular	Cytochrome-c3 Hydrogenase	Chain A, domain 2	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth Q], E [auth R], F [auth S]	NICKEL-DEPENDENT HYDROGENASE LARGE SUBUNIT	oxidoreductase activity oxidoreductase activity, acting on hydrogen as donor oxidoreductase activity, acting on hydrogen as donor, cytochrome as acceptor cytochrome-c3 hydrogenase activity catalytic activity cation binding transition metal ion binding ion binding binding nickel cation binding metal ion binding small molecule binding oxidoreductase activity, acting on hydrogen as donor, iron-sulfur protein as acceptor ferredoxin hydrogenase activity	-	cellular anatomical structure extracellular region periplasmic space
A, B, C	HYDROGENASE (NIFE) SMALL SUBUNIT HYDA	oxidoreductase activity oxidoreductase activity, acting on hydrogen as donor, iron-sulfur protein as acceptor oxidoreductase activity, acting on hydrogen as donor ferredoxin hydrogenase activity catalytic activity iron-sulfur cluster binding binding 3 iron, 4 sulfur cluster binding metal cluster binding small molecule binding oxidoreductase activity, acting on hydrogen as donor, cytochrome as acceptor cytochrome-c3 hydrogenase activity 4 iron, 4 sulfur cluster binding electron transfer activity oxidoreductase activity oxidoreductase activity, acting on hydrogen as donor, iron-sulfur protein as acceptor oxidoreductase activity, acting on hydrogen as donor ferredoxin hydrogenase activity catalytic activity iron-sulfur cluster binding binding 3 iron, 4 sulfur cluster binding metal cluster binding small molecule binding oxidoreductase activity, acting on hydrogen as donor, cytochrome as acceptor cytochrome-c3 hydrogenase activity 4 iron, 4 sulfur cluster binding electron transfer activity cation binding ion binding metal ion binding	cellular respiration energy derivation by oxidation of organic compounds metabolic process cellular process generation of precursor metabolites and energy anaerobic respiration	cellular anatomical structure membrane protein-containing complex catalytic complex oxidoreductase complex ferredoxin hydrogenase complex intracellular protein-containing complex [Ni-Fe] hydrogenase complex extracellular region periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D [auth Q], E [auth R], F [auth S]	IPR001501	Nickel-dependent hydrogenase, large subunit	Family
D [auth Q], E [auth R], F [auth S]	IPR029014	[NiFe]-hydrogenase, large subunit	Homologous Superfamily
D [auth Q], E [auth R], F [auth S]	IPR018194	Nickel-dependent hydrogenase, large subunit, nickel binding site	Binding Site
D [auth Q], E [auth R], F [auth S]	IPR050867	[NiFe]/[NiFeSe] hydrogenase large subunit	Family
A, B, C	IPR006311	Twin-arginine translocation pathway, signal sequence	Conserved Site
A, B, C	IPR001821	[NiFe]-hydrogenase, small subunit	Family
A, B, C	IPR027394	Cytochrome-c3 hydrogenase, C-terminal	Domain
A, B, C	IPR006137	NADH:ubiquinone oxidoreductase-like, 20kDa subunit	Domain
A, B, C	IPR037024	[NiFe]-hydrogenase, small subunit, N-terminal domain superfamily	Homologous Superfamily
A, B, C	IPR019546	Twin-arginine translocation pathway, signal sequence, bacterial/archaeal	Conserved Site
A, B, C	IPR037148	[NiFe]-hydrogenase, small subunit, C-terminal domain superfamily	Homologous Superfamily

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
D [auth Q], E [auth R], F [auth S]	CSX	Parent Component: CYS : AA0451 : 2'-(S-L-cysteinyl)-6'-hydroxy-L-tryptophan sulfoxide MOD:01380

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.