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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Splicing factor 3B subunit 1	RNA binding binding nucleic acid binding mRNA binding splicing factor binding protein binding	ribonucleoprotein complex biogenesis RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis ribonucleoprotein complex biogenesis RNA metabolic process mRNA processing protein-RNA complex assembly cellular component organization cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis RNA processing RNA splicing protein-containing complex organization primary metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA metabolic process macromolecule biosynthetic process nucleic acid 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 DNA-templated transcription positive regulation of biological 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 positive regulation of biosynthetic process transcription by RNA polymerase I positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase I positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process regulation of transcription by RNA polymerase I biological regulation regulation of macromolecule metabolic process positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of transcription by RNA polymerase III transcription by RNA polymerase III regulation of 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 chromatin organization chromatin remodeling	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen nuclear speck ribonucleoprotein granule nuclear body nucleoplasm supramolecular complex nuclear ribonucleoprotein granule 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 chromatin chromosome SWI/SNF superfamily-type complex prespliceosome U2-type prespliceosome
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 nucleic acid binding	RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing RNA splicing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process 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 macromolecule metabolic process regulation of RNA splicing mRNA metabolic 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 intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body cellular anatomical structure nucleoplasm organelle lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body cellular anatomical structure nucleoplasm organelle lumen organelle membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen centrosome microtubule organizing center cytoskeleton centriolar satellite microtubule cytoskeleton protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR054573	Phosphatase PP2A regulatory subunit A/Splicing factor 3B subunit 1-like, HEAT repeat	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
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	IPR003954	RNA recognition motif domain, eukaryotic-type	Domain
A, B	IPR035979	RNA-binding domain superfamily	Homologous Superfamily
A, B	IPR029123	Splicing factor RBM39, linker	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C	Pharos: O75533	B-cell chronic lymphocytic leukemia uveal melanoma myelodysplastic syndrome malignant mesothelioma prostate cancer ocular melanoma ovarian cancer primitive neuroectodermal tumor abdominal aortic aneurysm Prostatic Neoplasms 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 abdominal aortic aneurysm Prostatic Neoplasms thoracic aortic aneurysm anorexia nervosa autism spectrum disorder brain aneurysm malignant ependymoma medulloblastoma oligodendroglioma pancreatic ductal adenocarcinoma progressive supranuclear palsy acute myeloid leukemia psoriasis 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
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

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.