Annotations: 2HT1

The closed ring structure of the Rho transcription termination factor in complex with nucleic acid in the motor domains

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D [auth A]	SCOP2B Superfamily	Nucleic acid-binding proteins	8057374	3000135	SCOP2B (2022-06-29)
D [auth A]	SCOP2B Superfamily	RecA-like P-loop NTPases	8057376	3002019	SCOP2B (2022-06-29)
E [auth B]	SCOP2B Superfamily	RecA-like P-loop NTPases	8057376	3002019	SCOP2B (2022-06-29)
E [auth B]	SCOP2B Superfamily	Nucleic acid-binding proteins	8057374	3000135	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)
D [auth A]		e2ht1A1	A: beta barrels	X: Lipocalins/Streptavidin	H: RIFT-related	T: acid protease	F:	ECOD (v294.2)
E [auth B]	LRR_adjacent	e2ht1B1	A: beta barrels	X: Lipocalins/Streptavidin	H: Fibronectin type I module-like	T: Fibronectin type I module	F: LRR_adjacent	ECOD (v294.2)
E [auth B]		e2ht1B2	A: beta barrels	X: Lipocalins/Streptavidin	H: RIFT-related	T: acid protease	F:	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D [auth A]	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
D [auth A]	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
E [auth B]	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
E [auth B]	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
D [auth A], E [auth B]	PF00006	ATP synthase alpha/beta family, nucleotide-binding domain (ATP-synt_ab)	ATP synthase alpha/beta family, nucleotide-binding domain	This entry includes the ATP synthase alpha and beta subunits, the ATP synthase associated with flagella and the termination factor Rho.	Domain
D [auth A], E [auth B]	PF07497	Rho termination factor, RNA-binding domain (Rho_RNA_bind)	Rho termination factor, RNA-binding domain	The Rho termination factor disengages newly transcribed RNA from its DNA template at certain, specific transcripts. It it thought that two copies of Rho bind to RNA and that Rho functions as a hexamer of protomers [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth A], E [auth B]	Transcription termination factor rho	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 nucleic acid conformation isomerase activity isomerase activity catalytic activity, acting on a nucleic acid helicase activity macromolecular conformation isomerase activity catalytic activity ATP-dependent activity ATP-dependent activity, acting on RNA hydrolase activity RNA binding nucleic acid binding identical protein binding protein binding	RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression DNA-templated transcription termination macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression DNA-templated transcription termination macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process cellular process macromolecule metabolic process	cellular anatomical structure membrane intracellular anatomical structure cytoplasm cytosol
C [auth M]	5'-R(UPCPUPCP*U)-3'	-	-	-
A [auth J], B [auth K]	5'-R(UPC)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D [auth A], E [auth B]	IPR011129	Cold-shock domain	Domain
D [auth A], E [auth B]	IPR004665	Transcription termination factor Rho	Family
D [auth A], E [auth B]	IPR000194	ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domain	Domain
D [auth A], E [auth B]	IPR003593	AAA+ ATPase domain	Domain
D [auth A], E [auth B]	IPR036269	Rho termination factor, N-terminal domain superfamily	Homologous Superfamily
D [auth A], E [auth B]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
D [auth A], E [auth B]	IPR011112	Rho termination factor-like, N-terminal	Domain
D [auth A], E [auth B]	IPR011113	Rho termination factor, RNA-binding domain	Domain
D [auth A], E [auth B]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
D [auth A], E [auth B]	IPR041703	Transcription termination factor Rho, ATP binding domain	Domain

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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.