2XA6

Structural basis for homodimerization of the Src-associated during mitosis, 68 kD protein (Sam68) Qua1 domain

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Qua1 domain-like	8045249	4004372	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Qua1 domain-like	8089875	3002397	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Qua1 domain-like	8089875	3002397	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	PF16274	e2xa6A1	A: alpha duplicates or obligate multimers	X: Qua1 (From Topology)	H: Qua1 (From Topology)	T: Qua1	F: PF16274	ECOD (1.6)
B	PF16274	e2xa6B1	A: alpha duplicates or obligate multimers	X: Qua1 (From Topology)	H: Qua1 (From Topology)	T: Qua1	F: PF16274	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	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, B	KH DOMAIN-CONTAINING\,RNA-BINDING\,SIGNAL TRANSDUCTION-ASSOCIATED PROTEIN 1	protein binding binding protein domain specific binding protein-macromolecule adaptor activity molecular adaptor activity signaling adaptor activity SH2 domain binding RNA binding organic cyclic compound binding nucleic acid binding SH3 domain binding DNA binding mRNA binding protein-containing complex binding protein binding binding protein domain specific binding protein-macromolecule adaptor activity molecular adaptor activity signaling adaptor activity SH2 domain binding RNA binding organic cyclic compound binding nucleic acid binding SH3 domain binding DNA binding mRNA binding protein-containing complex binding poly(A) binding poly-purine tract binding single-stranded RNA binding poly-pyrimidine tract binding poly(U) RNA binding protein tyrosine kinase binding kinase binding enzyme binding protein kinase binding identical protein binding	regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process negative regulation of cellular process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process cellular process developmental process spermatogenesis sexual reproduction reproductive process multicellular organismal reproductive process developmental process involved in reproduction male gamete generation gamete generation regulation of localization cellular localization nitrogen compound transport nucleocytoplasmic transport transport positive regulation of nucleocytoplasmic transport nuclear transport positive regulation of biological process positive regulation of nucleobase-containing compound transport localization positive regulation of RNA export from nucleus establishment of localization in cell positive regulation of intracellular transport RNA localization nuclear export nucleobase-containing compound transport positive regulation of cellular process regulation of intracellular transport RNA transport regulation of transport organic substance transport regulation of nucleobase-containing compound transport regulation of RNA export from nucleus nucleic acid transport intracellular transport regulation of nucleocytoplasmic transport establishment of localization RNA export from nucleus establishment of RNA localization positive regulation of transport regulation of cellular localization macromolecule localization cellular response to stimulus immune response-regulating cell surface receptor signaling pathway response to stimulus signaling cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway immune response T cell receptor signaling pathway regulation of response to stimulus immune system process regulation of immune response antigen receptor-mediated signaling pathway activation of immune response alternative mRNA splicing, via spliceosome regulation of mRNA splicing, via spliceosome mRNA processing RNA processing regulation of mRNA processing RNA splicing regulation of RNA splicing mRNA metabolic process RNA splicing, via transesterification reactions regulation of alternative mRNA splicing, via spliceosome mRNA splicing, via spliceosome RNA splicing, via transesterification reactions with bulged adenosine as nucleophile regulation of mRNA metabolic process mitotic cell cycle process cell cycle phase transition cell cycle G1/S transition of mitotic cell cycle cell cycle G1/S phase transition mitotic cell cycle mitotic cell cycle phase transition cell cycle process transcription by RNA polymerase II regulation of transcription by RNA polymerase II negative regulation of transcription by RNA polymerase II positive regulation of protein metabolic process organonitrogen compound biosynthetic process positive regulation of translation positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process post-transcriptional regulation of gene expression positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process translational initiation protein metabolic process organonitrogen compound metabolic process regulation of translational initiation regulation of protein metabolic process translation positive regulation of gene expression regulation of translation positive regulation of translational initiation positive regulation of cellular biosynthetic process cell cycle G2/M phase transition G2/M transition of mitotic cell cycle	membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol cell periphery protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex Grb2-Sos complex membrane-bounded organelle nucleus membrane-enclosed lumen membrane cellular anatomical entity intracellular anatomical structure cytoplasm cytosol cell periphery protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex Grb2-Sos complex membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR032571	KHDRBS, Qua1 domain	Domain
A, B	IPR032335	Sam68, tyrosine-rich domain	Domain
A, B	IPR004087	K Homology domain	Domain
A, B	IPR036612	K Homology domain, type 1 superfamily	Homologous Superfamily
A, B	IPR045071	KH domain-containing BBP-like	Family
A, B	IPR004088	K Homology domain, type 1	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q07666	astrocytic tumor diabetes mellitus lung cancer osteosarcoma plasma cell myeloma atypical teratoid rhabdoid tumor large cell medulloblastoma medulloblastoma ovarian cancer primitive neuroectodermal tumor breast carcinoma lung adenocarcinoma myopathy pancreatic ductal adenocarcinoma psoriasis

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 R01GM133198.