Annotations: 3VAI

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	RNA-binding domain, RBD	8035331	3000110	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	RNA-binding domain, RBD	8035331	3000110	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	RRM_1_3	e3vaiA1	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_3	ECOD (1.6)
A	RRM_1_4	e3vaiA2	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_4	ECOD (1.6)
B	RRM_1_3	e3vaiB1	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_3	ECOD (1.6)
B	RRM_1_4	e3vaiB2	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_4	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.70.330	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	RRM (RNA recognition motif) domain	CATH (4.3.0)
B	3.30.70.330	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	RRM (RNA recognition motif) domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00076	RNA recognition motif (RRM_1)	RNA recognition motif	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and pro ...	The RRM motif (a.k.a. RRM, RBD, or RNP domain) is probably diagnostic of an RNA binding protein. RRMs are found in a variety of RNA binding proteins, including various hnRNP proteins, proteins implicated in regulation of alternative splicing, and protein components of snRNPs. The motif also appears in a few single stranded DNA binding proteins. The RRM structure consists of four strands and two helices arranged in an alpha/beta sandwich, with a third helix present during RNA binding in some cases The C-terminal beta strand (4th strand) and final helix are hard to align and have been omitted in the SEED alignment The LA proteins (Swiss:P05455) have an N terminal rrm which is included in the seed. There is a second region towards the C terminus that has some features characteristic of a rrm but does not appear to have the important structural core of a rrm. The LA proteins (Swiss:P05455) are one of the main autoantigens in Systemic lupus erythematosus (SLE), an autoimmune disease.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Splicing factor U2AF 65 kDa subunit	poly-pyrimidine tract binding RNA binding binding organic cyclic compound binding nucleic acid binding single-stranded RNA binding molecular function inhibitor activity molecular function regulator activity pre-mRNA binding pre-mRNA 3'-splice site binding protein binding enzyme binding C2H2 zinc finger domain binding protein domain specific binding	regulation of cellular process negative regulation of biological process regulation of mRNA splicing, via spliceosome mRNA processing negative regulation of cellular metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process regulation of RNA metabolic process negative regulation of mRNA splicing, via spliceosome negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process RNA processing negative regulation of mRNA processing regulation of biological process regulation of cellular process negative regulation of biological process regulation of mRNA splicing, via spliceosome mRNA processing negative regulation of cellular metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process regulation of RNA metabolic process negative regulation of mRNA splicing, via spliceosome negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process RNA processing negative regulation of mRNA processing 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 regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process negative regulation of RNA metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process negative regulation of mRNA metabolic process negative regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of mRNA processing RNA splicing biological regulation 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 negative regulation of RNA splicing RNA splicing, via transesterification reactions negative regulation of biosynthetic process mRNA splicing, via spliceosome cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile regulation of mRNA metabolic process ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization positive regulation of biological process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of cellular process positive regulation of gene expression positive regulation of RNA splicing positive regulation of cellular biosynthetic process negative regulation of post-translational protein modification regulation of protein modification process regulation of protein ubiquitination protein ubiquitination negative regulation of protein modification process protein metabolic process negative regulation of protein ubiquitination regulation of protein modification by small protein conjugation or removal protein modification process negative regulation of protein metabolic process negative regulation of protein modification by small protein conjugation or removal regulation of post-translational protein modification regulation of protein metabolic process macromolecule modification post-translational protein modification protein modification by small protein conjugation protein modification by small protein conjugation or removal	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck nuclear body intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck nuclear body intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen protein-containing complex nuclear protein-containing complex spliceosomal complex ribonucleoprotein complex U2AF complex U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome
C [auth P], D [auth E]	DNA 5'-D(UPUP(BRU)PUPCPUP*U)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006529	U2 snRNP auxilliary factor, large subunit, splicing factor	Family
A, B	IPR000504	RNA recognition motif domain	Domain
A, B	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
A, B	IPR035979	RNA-binding domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P26368	astrocytic tumor malignant glioma psoriasis large cell medulloblastoma medulloblastoma lung cancer ovarian cancer

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.