Annotations: 5ELT

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2 Family	Eukaryotic type KH-domain (KH-domain type I)	8045248	4001190	SCOP2 (2022-06-29)
A [auth B]	SCOP2 Family	Qua1 domain-like	8089876	4004372	SCOP2 (2022-06-29)
A [auth B]	SCOP2 Superfamily	Eukaryotic type KH-domain (KH-domain type I)	8089874	3001023	SCOP2 (2022-06-29)
A [auth B]	SCOP2 Superfamily	Qua1 domain-like	8089877	3002397	SCOP2 (2022-06-29)
B [auth A]	SCOP2B Superfamily	Eukaryotic type KH-domain (KH-domain type I)	8089874	3001023	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 [auth B]	Qua1	e5eltB2	A: alpha duplicates or obligate multimers	X: Qua1 (From Topology)	H: Qua1 (From Topology)	T: Qua1	F: Qua1	ECOD (1.6)
A [auth B]	KH_1	e5eltB1	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: KH-domains	T: Eukaryotic type KH-domain (KH-domain type I)	F: KH_1	ECOD (1.6)
B [auth A]	Qua1	e5eltA1	A: alpha duplicates or obligate multimers	X: Qua1 (From Topology)	H: Qua1 (From Topology)	T: Qua1	F: Qua1	ECOD (1.6)
B [auth A]	KH_1	e5eltA2	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: KH-domains	T: Eukaryotic type KH-domain (KH-domain type I)	F: KH_1	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF16274	Qua1 domain (Qua1)	Qua1 domain	This domain, approximately 40 residues in length, is mainly found in KH-domain containing, RNA-binding, signal transduction-associated protein 1 from yeast to human [1]. It forms a homodimer composed of a perpendicular interaction of two helical ha ...	This domain, approximately 40 residues in length, is mainly found in KH-domain containing, RNA-binding, signal transduction-associated protein 1 from yeast to human [1]. It forms a homodimer composed of a perpendicular interaction of two helical hairpins, and the Qua1 domain is sufficient for homodimerization which is required for the regulation of alternative splicing [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	KH domain-containing, RNA-binding, signal transduction-associated protein 3	SH3 domain binding protein binding binding protein domain specific binding RNA binding organic cyclic compound binding nucleic acid binding mRNA binding identical protein binding	regulation of cellular process alternative mRNA splicing, via spliceosome cellular biosynthetic process RNA metabolic process regulation of mRNA splicing, via spliceosome mRNA processing regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process regulation of RNA metabolic process RNA processing regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of cellular process alternative mRNA splicing, via spliceosome cellular biosynthetic process RNA metabolic process regulation of mRNA splicing, via spliceosome mRNA processing regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process regulation of RNA metabolic process RNA processing regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of mRNA processing RNA splicing regulation of biological process cellular metabolic process biological regulation primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression nucleobase-containing compound biosynthetic process regulation of RNA splicing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process RNA splicing, via transesterification reactions regulation of alternative mRNA splicing, via spliceosome mRNA splicing, via spliceosome metabolic process cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of mRNA metabolic process regulation of metabolic process	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen protein-containing complex
C [auth E], D [auth F]	RNA (5'-R(PUPAPAPU)-3')	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR032571	KHDRBS, Qua1 domain	Domain
A [auth B], B [auth A]	IPR032335	Sam68, tyrosine-rich domain	Domain
A [auth B], B [auth A]	IPR004087	K Homology domain	Domain
A [auth B], B [auth A]	IPR036612	K Homology domain, type 1 superfamily	Homologous Superfamily
A [auth B], B [auth A]	IPR045071	KH domain-containing BBP-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth B], B [auth A]	Pharos: O75525	atypical teratoid rhabdoid tumor lung cancer medulloblastoma primitive neuroectodermal tumor endometriosis malignant ependymoma Pick disease Sjogren syndrome large cell medulloblastoma malignant mesothelioma pilocytic astrocytoma

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.