Annotations: 4OZ1

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	RRM_1_9	e4oz1A1	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_9	ECOD (1.6)
B	RRM_1_9	e4oz1B1	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_1_9	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	PF15519	linker between RRM2 and RRM3 domains in RBM39 protein (RBM39linker)	linker between RRM2 and RRM3 domains in RBM39 protein	A conserved linker between the second and the third RRM domain in human RBM39 (CAPER) protein, also present in other RNA binding proteins, especially those involved in RNA splicing. This linker was implicated in interactions with ESR1 and ESR2. Preli ...	A conserved linker between the second and the third RRM domain in human RBM39 (CAPER) protein, also present in other RNA binding proteins, especially those involved in RNA splicing. This linker was implicated in interactions with ESR1 and ESR2. Preliminary results from JCSG suggest that this is a structured domain with a well defined fold.	Domain
C	PF08920	Splicing factor 3B subunit 1 (SF3b1)	Splicing factor 3B subunit 1	This family consists of several eukaryotic splicing factor 3B subunit 1 proteins, which associate with p14 through a C-terminus beta-strand that interacts with beta-3 of the p14 RNA recognition motif (RRM) beta-sheet, which is in turn connected to an ...	This family consists of several eukaryotic splicing factor 3B subunit 1 proteins, which associate with p14 through a C-terminus beta-strand that interacts with beta-3 of the p14 RNA recognition motif (RRM) beta-sheet, which is in turn connected to an alpha-helix by a loop that makes extensive contacts with both the shorter C-terminal helix and RRM of p14. This subunit is required for 'A' splicing complex assembly (formed by the stable binding of U2 snRNP to the branchpoint sequence in pre-mRNA) and 'E' splicing complex assembly [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	RNA-binding protein 39	U1 snRNP binding ribonucleoprotein complex binding snRNP binding protein-containing complex binding binding RS domain binding protein binding protein domain specific binding RNA binding organic cyclic compound binding nucleic acid binding	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process regulation of cellular process regulation of mRNA splicing, via spliceosome mRNA processing regulation of primary metabolic process regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of mRNA processing regulation of biological process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process regulation of RNA splicing mRNA metabolic process regulation of cellular biosynthetic process regulation of gene expression RNA splicing, via transesterification reactions mRNA splicing, via spliceosome regulation of macromolecule biosynthetic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile regulation of mRNA metabolic process regulation of metabolic process	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 centrosome microtubule organizing center cytoskeleton centriolar satellite intracellular non-membrane-bounded organelle microtubule cytoskeleton non-membrane-bounded organelle protein-containing complex
C	Splicing factor 3B subunit 1	RNA binding binding organic cyclic compound binding nucleic acid binding mRNA binding splicing factor binding protein binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly organic substance metabolic process protein-containing complex assembly organic substance biosynthetic process ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly organic substance metabolic process protein-containing complex assembly organic substance biosynthetic process cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization cellular metabolic process primary metabolic process gene expression mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process RNA splicing, via transesterification reactions U2-type prespliceosome assembly mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process regulation of cellular process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase I positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological process positive regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase I regulation of cellular metabolic process positive regulation of RNA metabolic process regulation of gene expression organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process positive regulation of biosynthetic process positive regulation of transcription by RNA polymerase I positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process regulation of cellular biosynthetic process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process regulation of transcription by RNA polymerase III positive regulation of transcription by RNA polymerase III transcription by RNA polymerase III transcription by RNA polymerase II regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II protein-DNA complex organization chromatin organization chromatin remodeling	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle nuclear speck nuclear body nucleoplasm spliceosomal snRNP complex protein-containing complex nuclear protein-containing complex Sm-like protein family complex small nuclear ribonucleoprotein complex ribonucleoprotein complex U2 snRNP catalytic step 2 spliceosome catalytic complex spliceosomal complex U11/U12 snRNP U2-type spliceosomal complex U2-type precatalytic spliceosome precatalytic spliceosome U12-type spliceosomal complex ATPase complex B-WICH complex chromosome SWI/SNF superfamily-type complex protein-DNA complex chromatin prespliceosome U2-type prespliceosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003954	RNA recognition motif domain, eukaryote	Domain
A, B	IPR000504	RNA recognition motif domain	Domain
A, B	IPR006509	Splicing factor, RBM39-like	Family
A, B	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
A, B	IPR035979	RNA-binding domain superfamily	Homologous Superfamily
A, B	IPR029123	Splicing factor RBM39, linker	Domain
C	IPR016024	Armadillo-type fold	Homologous Superfamily
C	IPR011989	Armadillo-like helical	Homologous Superfamily
C	IPR015016	Splicing factor 3B subunit 1	Domain
C	IPR038737	Splicing factor 3B subunit 1-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q14498	acute myeloid leukemia cerebrovascular disorder malignant glioma pancreatic ductal adenocarcinoma Pick disease skin carcinoma astrocytic tumor juvenile dermatomyositis oligodendroglioma pancreatic intraductal papillary-mucinous carcinoma psoriasis atypical teratoid rhabdoid tumor malignant ependymoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia acute myeloid leukemia cerebrovascular disorder malignant glioma pancreatic ductal adenocarcinoma Pick disease skin carcinoma astrocytic tumor juvenile dermatomyositis oligodendroglioma pancreatic intraductal papillary-mucinous carcinoma psoriasis atypical teratoid rhabdoid tumor malignant ependymoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia rheumatoid arthritis
C	Pharos: O75533	B-cell chronic lymphocytic leukemia uveal melanoma myelodysplastic syndrome malignant mesothelioma prostate cancer ocular melanoma ovarian cancer primitive neuroectodermal tumor Prostatic Neoplasms abdominal aortic aneurysm thoracic aortic aneurysm anorexia nervosa autism spectrum disorder brain aneurysm malignant ependymoma B-cell chronic lymphocytic leukemia uveal melanoma myelodysplastic syndrome malignant mesothelioma prostate cancer ocular melanoma ovarian cancer primitive neuroectodermal tumor Prostatic Neoplasms abdominal aortic aneurysm thoracic aortic aneurysm anorexia nervosa autism spectrum disorder brain aneurysm malignant ependymoma medulloblastoma oligodendroglioma pancreatic ductal adenocarcinoma progressive supranuclear palsy psoriasis acute myeloid leukemia astrocytic tumor cancer Gaucher disease large cell medulloblastoma osteosarcoma Pick disease allergic rhinitis atypical teratoid rhabdoid tumor bipolar disorder congenital anemia glioblastoma malignant choroid melanoma

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.