Annotations: 1X4T

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1x4ta1	All alpha proteins	Long alpha-hairpin	ISY1 domain-like	ISY1 N-terminal domain-like	Pre-mRNA-splicing factor ISY1 homolog	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1x4ta3	Artifacts	Tags	Tags	Tags	C-terminal Tags	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1x4ta2	Artifacts	Tags	Tags	Tags	N-terminal Tags	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	ISY1 N-terminal domain-like	8021232	4001053	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ISY1 domain-like	8033612	3000596	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF06246	e1x4tA1	A: alpha bundles	X: Long alpha-hairpin	H: ISY1 N-terminal domain-like (From Topology)	T: ISY1 N-terminal domain-like	F: PF06246	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.287.660	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF06246	Isy1-like splicing family (Isy1)	Isy1-like splicing family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	hypothetical protein LOC57905	-	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression mRNA processing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via transesterification reactions RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression mRNA processing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome organic substance biosynthetic process metabolic process cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process RNA processing ribonucleoprotein complex biogenesis protein-RNA complex assembly cellular component organization cellular component biogenesis protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis generation of catalytic spliceosome for second transesterification step protein-containing complex organization spliceosomal conformational changes to generate catalytic conformation spliceosomal complex assembly mRNA splice site recognition mRNA 3'-splice site recognition	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus post-spliceosomal complex nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle spliceosomal complex organelle ribonucleoprotein complex U2-type spliceosomal complex catalytic complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus post-spliceosomal complex nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle spliceosomal complex organelle ribonucleoprotein complex U2-type spliceosomal complex catalytic complex U2-type catalytic step 1 spliceosome catalytic step 1 spliceosome catalytic step 2 spliceosome post-mRNA release spliceosomal complex Prp19 complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR029012	Helix hairpin bin domain superfamily	Homologous Superfamily
A	IPR009360	Pre-mRNA-splicing factor Isy1	Family
A	IPR037200	Pre-mRNA-splicing factor Isy1 superfamily	Homologous Superfamily

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 R01GM133198.