1QHG | pdb_00001qhg

STRUCTURE OF DNA HELICASE MUTANT WITH ADPNP

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
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1qhga1	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Tandem AAA-ATPase domain	DEXX box DNA helicase	(Geobacillus stearothermophilus ) [TaxId: 1422 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	RecA-like P-loop NTPases	8044310	3002019	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	RecA-like P-loop NTPases	8044312	3002019	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)
A	UvrD-helicase	e1qhgA3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: UvrD-helicase	ECOD (1.6)
A	UvrD_C	e1qhgA4	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: UvrD_C	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	1.10.10.160	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
A	1.10.486.10	Mainly Alpha	Orthogonal Bundle	PCRA	domain 4	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	ATP-DEPENDENT HELICASE PCRA	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity nucleic acid conformation isomerase activity isomerase activity DNA helicase activity catalytic activity, acting on a nucleic acid helicase activity 3'-5' DNA helicase activity ATP-dependent activity, acting on DNA catalytic activity, acting on DNA macromolecular conformation isomerase activity	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus response to stimulus DNA recombination cellular response to stress DNA damage response response to stress nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus response to stimulus DNA recombination cellular response to stress DNA damage response response to stress recombinational repair DNA repair response to radiation response to abiotic stimulus	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex catalytic complex DNA helicase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR014017	UvrD-like helicase, C-terminal	Domain
A	IPR000212	UvrD-like helicase	Family
A	IPR014016	UvrD-like helicase, ATP-binding domain	Domain
A	IPR005751	ATP-dependent DNA helicase PcrA	Family
A	IPR013986	DExx box DNA helicase domain superfamily	Homologous Superfamily
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	DNA helicase M-CSA #833	PcrA DNA helicase is a 3'-5' DNA helicase. It is a single-stranded DNA (ssDNA)-dependent ATPase that uses the free energy of ATP hydrolysis to unwind duplex DNA. PcrA is known to be essential in some species, such as Bacillus subtilis and Staphylococcus aureus, with roles in DNA repair and rolling circle replication. This annotation covers the ATPase activity of PcrA. The conformational changes brought about through ATP binding, hydrolysis and subsequent release allow PcrA to bind to DNA and unwind the helix. In particular a Glutamine residue that binds to the gamma phosphate of ATP is part of the motif III switch which bridges the ATPase domain and the DNA binding domain. So the binding of the gamma phosphate and its cleavage from the ATP in the ATPase domain can result in conformational changes in the DNA binding domain which enables PcrA to bind to DNA.	Defined by 6 residues: LYS:A-37THR:A-38ASP:A-223GLU:A-224GLN:A-254ARG:A-610 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 5.6.2.4 (UniProt) Search M-CSA Motif + EC 5.6.2.4

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.