4FXX | pdb_00004fxx

Structure of SF1 coiled-coil domain

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	SF1 HH domain-like	8089885	3002399	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	SF1 HH domain-like	8089885	3002399	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	SF1 HH domain-like	8089885	3002399	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	SF1 HH domain-like	8089885	3002399	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)
D		e4fxxD1	A: a/b three-layered sandwiches	X: Anticodon-binding domain of Class II aaRS	H: Anticodon-binding domain of Class II aaRS	T: Anticodon-binding domain of Class II aaRS	F:	ECOD (v294.1)
C	Ank_2, Ank_4, Ank_5	e4fxxC3	A: a/b three-layered sandwiches	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Ank_2, Ank_4, Ank_5	ECOD (v294.1)
B	Ank_2, Ank_4, Ank_5	e4fxxB3	A: a/b three-layered sandwiches	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Ank_2, Ank_4, Ank_5	ECOD (v294.1)
A	SH3_16	e4fxxA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Glycosyl hydrolase domain	T: Glycosyl hydrolase domain	F: SH3_16	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	6.10.140.1790	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
B	6.10.140.1790	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF16275	Splicing factor 1 helix-hairpin domain (SF1-HH)	Splicing factor 1 helix-hairpin domain	This domain, approximately 100 residues in length, is mainly found in splicing factor 1 from yeast to human [1]. It is a helix-hairpin domain, which forms a secondary, hydrophobic interface with U2AF65(UHM) to lock the orientation of the two subunit ...	This domain, approximately 100 residues in length, is mainly found in splicing factor 1 from yeast to human [1]. It is a helix-hairpin domain, which forms a secondary, hydrophobic interface with U2AF65(UHM) to lock the orientation of the two subunits, which is essential for cooperative formation of the ternary SF1-U2AF65-RNA complex [2]. In this domain, it contains a highly conserved SPSP motif in its C terminal and phophorylation of SPSP motif induces a disorder-to-order transition within a novel SF1/U2AF65 interface, indicating a phosphorylation-dependent control of pre-mRNA splicing factors [3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Splicing factor 1	transcription corepressor activity transcription regulator activity transcription coregulator activity RNA binding binding nucleic acid binding mRNA binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding identical protein binding transcription corepressor activity transcription regulator activity transcription coregulator activity RNA binding binding nucleic acid binding mRNA binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding identical protein 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 mRNA splicing, via spliceosome cellular process metabolic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process mRNA cis splicing, via spliceosome regulation of biological process negative regulation of cell population proliferation cell population proliferation regulation of cellular process regulation of smooth muscle cell proliferation biological regulation negative regulation of biological process smooth muscle cell proliferation negative regulation of smooth muscle cell proliferation regulation of cell population proliferation negative regulation of cellular process muscle cell proliferation mRNA splice site recognition mRNA 3'-splice site recognition	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex U2AF complex membrane-enclosed lumen intracellular organelle lumen membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex U2AF complex membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen membraneless organelle intracellular membraneless organelle ribosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR032570	Splicing factor 1, helix-hairpin domain	Domain
A, B, C, D	IPR004087	K Homology domain	Domain
A, B, C, D	IPR047086	Splicing factor 1, helix-hairpin domain superfamily	Homologous Superfamily
A, B, C, D	IPR001878	Zinc finger, CCHC-type	Domain
A, B, C, D	IPR036612	K Homology domain, type 1 superfamily	Homologous Superfamily
A, B, C, D	IPR045071	KH domain-containing BBP-like	Family
A, B, C, D	IPR055256	KHDC4/BBP-like, KH-domain type I	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: Q15637	melanoma ovarian cancer Pick disease psoriasis astrocytic tumor breast cancer cutaneous melanoma head and neck cancer malignant ependymoma medulloblastoma oligodendroglioma pancreatic intraductal papillary-mucinous carcinoma plasma cell myeloma attention deficit hyperactivity disorder, inattentive type breast carcinoma melanoma ovarian cancer Pick disease psoriasis astrocytic tumor breast cancer cutaneous melanoma head and neck cancer malignant ependymoma medulloblastoma oligodendroglioma pancreatic intraductal papillary-mucinous carcinoma plasma cell myeloma attention deficit hyperactivity disorder, inattentive type breast carcinoma glioblastoma interstitial lung disease malignant glioma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia primitive neuroectodermal tumor atypical teratoid rhabdoid tumor chronic obstructive pulmonary disease gout large cell medulloblastoma malignant mesothelioma non-small cell lung carcinoma

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.