Annotations: 1KQ2

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth A]	d1kq2a_	All beta proteins	Sm-like fold	Sm-like ribonucleoproteins	Pleiotropic translational regulator Hfq	Pleiotropic translational regulator Hfq	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
C [auth B]	d1kq2b_	All beta proteins	Sm-like fold	Sm-like ribonucleoproteins	Pleiotropic translational regulator Hfq	Pleiotropic translational regulator Hfq	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
D [auth H]	d1kq2h_	All beta proteins	Sm-like fold	Sm-like ribonucleoproteins	Pleiotropic translational regulator Hfq	Pleiotropic translational regulator Hfq	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
E [auth I]	d1kq2i_	All beta proteins	Sm-like fold	Sm-like ribonucleoproteins	Pleiotropic translational regulator Hfq	Pleiotropic translational regulator Hfq	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
F [auth K]	d1kq2k_	All beta proteins	Sm-like fold	Sm-like ribonucleoproteins	Pleiotropic translational regulator Hfq	Pleiotropic translational regulator Hfq	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
G [auth M]	d1kq2m_	All beta proteins	Sm-like fold	Sm-like ribonucleoproteins	Pleiotropic translational regulator Hfq	Pleiotropic translational regulator Hfq	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth A]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8040547	3000419	SCOP2B (2022-06-29)
C [auth B]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8040547	3000419	SCOP2B (2022-06-29)
D [auth H]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8040547	3000419	SCOP2B (2022-06-29)
E [auth I]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8040547	3000419	SCOP2B (2022-06-29)
F [auth K]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8040547	3000419	SCOP2B (2022-06-29)
G [auth M]	SCOP2B Superfamily	Sm-like ribonucleoproteins	8040547	3000419	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)
B [auth A]	UNK_F_TYPE	e1kq2A1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: UNK_F_TYPE	ECOD (1.6)
C [auth B]	UNK_F_TYPE	e1kq2B1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: UNK_F_TYPE	ECOD (1.6)
D [auth H]	UNK_F_TYPE	e1kq2H1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: UNK_F_TYPE	ECOD (1.6)
E [auth I]	UNK_F_TYPE	e1kq2I1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: UNK_F_TYPE	ECOD (1.6)
F [auth K]	UNK_F_TYPE	e1kq2K1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: UNK_F_TYPE	ECOD (1.6)
G [auth M]	UNK_F_TYPE	e1kq2M1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: UNK_F_TYPE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth A]	2.30.30.100	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
C [auth B]	2.30.30.100	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
D [auth H]	2.30.30.100	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
E [auth I]	2.30.30.100	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
F [auth K]	2.30.30.100	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
G [auth M]	2.30.30.100	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], G [auth M]	PF17209	Hfq protein (Hfq)	Hfq protein	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth R]	5'-R(APUPUPUPUPUP*G)-3'	-	-	-
B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], G [auth M]	Host factor for Q beta	RNA binding binding organic cyclic compound binding nucleic acid binding	regulation of cellular process catabolic process RNA metabolic process macromolecule catabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process regulation of biological quality regulation of nucleobase-containing compound metabolic process RNA catabolic process regulation of biosynthetic process regulation of biological process biological regulation regulation of cellular process catabolic process RNA metabolic process macromolecule catabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process regulation of biological quality regulation of nucleobase-containing compound metabolic process RNA catabolic process regulation of biosynthetic process regulation of biological process biological regulation primary metabolic process regulation of macromolecule metabolic process regulation of catabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound catabolic process regulation of gene expression biosynthetic process regulation of RNA stability nucleic acid catabolic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process regulation of protein metabolic process translation regulation of translation, ncRNA-mediated regulation of translation protein metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA biosynthetic process nucleobase-containing compound biosynthetic process regulation of DNA-templated transcription	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], G [auth M]	IPR010920	LSM domain superfamily	Homologous Superfamily
B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], G [auth M]	IPR005001	RNA-binding protein Hfq	Family
B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], B [auth A], C [auth B], D [auth H], E [auth I], F [auth K], G [auth M]	IPR047575	Sm domain	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.