Annotations: 2XZ2

Crystal structure of CstF-50 homodimerization domain

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	CSTF1_dimer	e2xz2A1	A: alpha arrays	X: Hormone receptor domain (HRM, Pfam 02793)	H: Nucleoporin NUP85/Nucleoporin NUP145 C-terminal domain	T: Nucleoporin NUP85/Nucleoporin NUP145 C-terminal domain	F: CSTF1_dimer	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.960.50	Mainly Alpha	Up-down Bundle	Mitochondrial Import Receptor Subunit Tom20	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF16699	Cleavage stimulation factor subunit 1, dimerisation domain (CSTF1_dimer)	Cleavage stimulation factor subunit 1, dimerisation domain	This family is the dimerisation domain, at the N-terminal, of a family of cleavage stimulation factor subunit 1 proteins from eukaryotes. This domain allows for homodimerisation such that the functional state of CSTF1 is a heterohexamer. The cleavage ...	This family is the dimerisation domain, at the N-terminal, of a family of cleavage stimulation factor subunit 1 proteins from eukaryotes. This domain allows for homodimerisation such that the functional state of CSTF1 is a heterohexamer. The cleavage stimulation factor (CstF) complex is composed of three subunits and is essential for pre-mRNA 3'-end processing. CstF recognises U and G/U-rich cis-acting RNA sequence elements and helps to stabilise the cleavage and polyadenylation specificity factor (CPSF) at the polyadenylation site as required for productive RNA cleavage [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CSTF-50, ISOFORM B	-	mRNA 3'-end processing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process RNA 3'-end processing mRNA 3'-end processing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process RNA 3'-end processing metabolic process cellular process RNA processing macromolecule metabolic process	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex mRNA cleavage stimulating factor complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure organelle mRNA cleavage factor complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex mRNA cleavage stimulating factor complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure organelle mRNA cleavage factor complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR020472	PAC1/LIS1-like, WD-40 repeat	Repeat
A	IPR001680	WD40 repeat	Repeat
A	IPR038184	CSTF1, dimerization domain superfamily	Homologous Superfamily
A	IPR019775	WD40 repeat, conserved site	Conserved Site
A	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
A	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
A	IPR032028	Cleavage stimulation factor subunit 1, dimerisation domain	Domain
A	IPR044633	Cleavage stimulation factor subunit 1-like	Family