Annotations: 3KTR

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PABP	e3ktrA1	A: alpha arrays	X: PABP domain-like	H: PABC(PABP) domain (From Topology)	T: PABC(PABP) domain	F: PABP	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.1900.10	Mainly Alpha	Orthogonal Bundle	c-terminal domain of poly(a) binding protein	c-terminal domain of poly(a) binding protein	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00658	Poly-adenylate binding protein, unique domain (PABP)	Poly-adenylate binding protein, unique domain	-	Family
B	PF07145	Ataxin-2 C-terminal region (PAM2)	Ataxin-2 C-terminal region	-	Motif

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Polyadenylate-binding protein 1	mRNA 3'-UTR binding RNA binding binding organic cyclic compound binding nucleic acid binding mRNA binding translation regulator activity translation activator activity translation regulator activity, nucleic acid binding poly(A) binding poly-purine tract binding single-stranded RNA binding poly-pyrimidine tract binding poly(U) RNA binding	regulation of cellular process nuclear-transcribed mRNA catabolic process, nonsense-mediated decay negative regulation of biological process positive regulation of macromolecule biosynthetic process negative regulation of cellular metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process RNA catabolic process regulation of cellular process nuclear-transcribed mRNA catabolic process, nonsense-mediated decay negative regulation of biological process positive regulation of macromolecule biosynthetic process negative regulation of cellular metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process RNA catabolic process mRNA catabolic process 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 nucleobase-containing compound catabolic process organic cyclic compound metabolic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process nucleic acid catabolic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process negative regulation of RNA metabolic process catabolic process cellular biosynthetic process positive regulation of biological process RNA metabolic process positive regulation of cellular metabolic process macromolecule catabolic process negative regulation of mRNA metabolic process regulation of mRNA catabolic process organic substance metabolic process positive regulation of biosynthetic process negative regulation of cellular process positive regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of catabolic process nuclear-transcribed mRNA catabolic process negative regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay biological regulation negative regulation of mRNA catabolic process negative regulation of RNA catabolic process regulation of macromolecule metabolic process regulation of catabolic process gene expression mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound catabolic process regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay regulation of cellular biosynthetic process negative regulation of biosynthetic process positive regulation of gene expression cellular process regulation of mRNA metabolic process organic substance catabolic process positive regulation of cellular biosynthetic process post-transcriptional regulation of gene expression regulation of biological quality mRNA stabilization regulation of mRNA stability CRD-mediated mRNA stabilization RNA stabilization regulation of RNA stability positive regulation of nucleobase-containing compound metabolic process positive regulation of mRNA metabolic process positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay positive regulation of RNA metabolic process nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay mRNA destabilization regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay RNA destabilization positive regulation of catabolic process positive regulation of mRNA catabolic process positive regulation of nuclear-transcribed mRNA poly(A) tail shortening nuclear-transcribed mRNA poly(A) tail shortening regulation of nuclear-transcribed mRNA poly(A) tail shortening negative regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay regulatory ncRNA-mediated gene silencing positive regulation of protein metabolic process organonitrogen compound biosynthetic process positive regulation of translation positive regulation of cytoplasmic translation protein metabolic process organonitrogen compound metabolic process regulation of protein metabolic process translation regulation of translation cytoplasmic translation regulation of cytoplasmic translation positive regulation of viral genome replication positive regulation of viral process viral life cycle regulation of viral process regulation of viral life cycle viral genome replication viral process regulation of viral genome replication RNA splicing mRNA processing RNA splicing, via transesterification reactions mRNA splicing, via spliceosome RNA splicing, via transesterification reactions with bulged adenosine as nucleophile RNA processing	anchoring junction cell junction cellular anatomical entity focal adhesion cell-substrate junction cell projection cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure cytoplasmic ribonucleoprotein granule ribonucleoprotein granule intracellular organelle organelle anchoring junction cell junction cellular anatomical entity focal adhesion cell-substrate junction cell projection cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure cytoplasmic ribonucleoprotein granule ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule membrane membrane-bounded organelle catalytic step 2 spliceosome protein-containing complex catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle spliceosomal complex ribonucleoprotein complex extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cytosol mCRD-mediated mRNA stability complex
B	Ataxin-2	RNA binding binding organic cyclic compound binding nucleic acid binding mRNA binding epidermal growth factor receptor binding protein binding signaling receptor binding growth factor receptor binding	nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process RNA metabolic process metabolic process primary metabolic process macromolecule metabolic process nucleic acid metabolic process cellular component biogenesis cellular component organization organelle organization cellular component assembly stress granule assembly organelle assembly nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process RNA metabolic process metabolic process primary metabolic process macromolecule metabolic process nucleic acid metabolic process cellular component biogenesis cellular component organization organelle organization cellular component assembly stress granule assembly organelle assembly non-membrane-bounded organelle assembly cellular process cellular component organization or biogenesis regulation of cellular process cellular biosynthetic process organonitrogen compound biosynthetic process regulation of primary metabolic process post-transcriptional regulation of gene expression organic substance biosynthetic process protein metabolic process regulation of biosynthetic process regulation of biological process organonitrogen compound metabolic process cellular metabolic process regulation of protein metabolic process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process regulation of translation regulation of macromolecule biosynthetic process regulation of metabolic process RNA transport nitrogen compound transport transport organic substance transport nucleic acid transport establishment of localization localization establishment of RNA localization macromolecule localization RNA localization nucleobase-containing compound transport regulation of localization import into cell regulation of cellular component organization receptor internalization negative regulation of biological process negative regulation of transport negative regulation of endocytosis regulation of receptor internalization vesicle-mediated transport negative regulation of cellular process regulation of endocytosis negative regulation of cellular component organization regulation of transport negative regulation of receptor-mediated endocytosis regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport endocytosis receptor-mediated endocytosis negative regulation of receptor internalization P-body assembly	intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule membrane membrane-bounded organelle Golgi apparatus subcompartment intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex non-membrane-bounded organelle cytoplasmic stress granule membrane membrane-bounded organelle Golgi apparatus subcompartment Golgi apparatus organelle subcompartment intracellular membrane-bounded organelle endomembrane system trans-Golgi network cytosol perinuclear region of cytoplasm protein-containing complex ribonucleoprotein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR006515	Polyadenylate binding protein, human types 1, 2, 3, 4	Family
A	IPR002004	Polyadenylate-binding protein/Hyperplastic disc protein	Domain
A	IPR003954	RNA recognition motif domain, eukaryote	Domain
A	IPR000504	RNA recognition motif domain	Domain
A	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
A	IPR036053	PABC (PABP) domain	Homologous Superfamily
A	IPR034364	PABP, RNA recognition motif 1	Domain
A	IPR035979	RNA-binding domain superfamily	Homologous Superfamily
A	IPR045305	PABP, RNA recognition motif 2	Domain
B	IPR025852	Ataxin 2, SM domain	Domain
B	IPR009604	LsmAD domain	Domain
B	IPR047575	Sm domain	Domain
B	IPR045117	Ataxin2-like	Family
B	IPR010920	LSM domain superfamily	Homologous Superfamily
B	IPR009818	Ataxin-2, C-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P11940	transitional cell carcinoma breast carcinoma urinary bladder cancer astrocytic tumor Down syndrome lung cancer Mammary Neoplasms, Human spina bifida urinary bladder neoplasm breast cancer Duchenne muscular dystrophy myopathy juvenile dermatomyositis ovarian cancer
B	Pharos: Q99700	amyotrophic lateral sclerosis spinocerebellar ataxia type 2 Parkinson disease autosomal dominant cerebellar ataxia open-angle glaucoma late-onset Parkinson disease neurodegenerative disease heart disease hypothyroidism olivopontocerebellar atrophy age-related macular degeneration primary open angle glaucoma Amyotrophic Lateral Sclerosis With Dementia sclerosing cholangitis astrocytic tumor amyotrophic lateral sclerosis spinocerebellar ataxia type 2 Parkinson disease autosomal dominant cerebellar ataxia open-angle glaucoma late-onset Parkinson disease neurodegenerative disease heart disease hypothyroidism olivopontocerebellar atrophy age-related macular degeneration primary open angle glaucoma Amyotrophic Lateral Sclerosis With Dementia sclerosing cholangitis astrocytic tumor cerebrovascular disorder spinocerebellar ataxia type 6 endometrial cancer type 1 diabetes mellitus hereditary ataxia inflammatory bowel disease myocardial infarction peripheral arterial disease allergic rhinitis psoriasis celiac disease spinocerebellar ataxia type 4 colorectal adenoma spinocerebellar ataxia type 7 endometrial carcinoma vitiligo Hashimoto thyroiditis hypertensive disorder juvenile idiopathic arthritis ovarian cancer primary biliary cholangitis schizophrenia ankylosing spondylitis spinocerebellar ataxia type 1 attention deficit hyperactivity disorder, inattentive type cerebellar ataxia spinocerebellar ataxia type 5 colorectal cancer systemic lupus erythematosus gastroesophageal reflux disease wet macular degeneration

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.