Annotations: 2KFD

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	FF	e2kfdA1	A: alpha arrays	X: HTH	H: HTH	T: FF domain	F: FF	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.440	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	FF domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Pre-mRNA-processing protein PRP40	RNA binding binding organic cyclic compound binding nucleic acid binding	ribonucleoprotein complex biogenesis RNA metabolic process mRNA processing protein-RNA complex assembly nucleobase-containing compound metabolic process RNA biosynthetic process cellular component organization cellular component biogenesis nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly RNA processing ribonucleoprotein complex biogenesis RNA metabolic process mRNA processing protein-RNA complex assembly nucleobase-containing compound metabolic process RNA biosynthetic process cellular component organization cellular component biogenesis nucleic acid biosynthetic process spliceosomal complex assembly protein-RNA complex organization cellular component assembly protein-containing complex assembly RNA processing cellular component organization or biogenesis mRNA splice site recognition RNA splicing protein-containing complex organization primary metabolic process mRNA 5'-splice site recognition 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 cis splicing, via spliceosome mRNA splicing, via spliceosome metabolic process cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process	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 U2-type spliceosomal complex commitment complex prespliceosome 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 U2-type spliceosomal complex commitment complex prespliceosome U2-type prespliceosome spliceosomal snRNP complex Sm-like protein family complex small nuclear ribonucleoprotein complex U1 snRNP

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR039726	Pre-mRNA-processing factor Prp40	Family
A	IPR036517	FF domain superfamily	Homologous Superfamily
A	IPR002713	FF domain	Domain
A	IPR036020	WW domain superfamily	Homologous Superfamily
A	IPR001202	WW domain	Domain

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.