Annotations: 5O9E

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Class II aaRS ABD-related	8095989	3000465	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Class II aaRS ABD-related	8095988	3000465	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)
A	PF04427	e5o9eA1	A: a/b three-layered sandwiches	X: Anticodon-binding domain of Class II aaRS (From Topology)	H: Anticodon-binding domain of Class II aaRS (From Topology)	T: Anticodon-binding domain of Class II aaRS	F: PF04427	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF04427	Brix domain (Brix)	Brix domain	-	Domain
B	PF04006	Mpp10 protein (Mpp10)	Mpp10 protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Putative U3 small nucleolar ribonucleoprotein	RNA binding rRNA primary transcript binding binding organic cyclic compound binding rRNA binding nucleic acid binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process cellular metabolic process primary metabolic process ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process	protein-containing complex ribonucleoprotein complex
B	Putative U3 small nucleolar ribonucleoprotein protein	-	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process cellular metabolic process primary metabolic process ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process	protein-containing complex sno(s)RNA-containing ribonucleoprotein complex ribonucleoprotein complex membrane-bounded organelle preribosome intracellular anatomical structure Mpp10 complex nucleus membrane-enclosed lumen nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen protein-containing complex sno(s)RNA-containing ribonucleoprotein complex ribonucleoprotein complex membrane-bounded organelle preribosome intracellular anatomical structure Mpp10 complex nucleus membrane-enclosed lumen nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen 90S preribosome intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR044281	U3 snoRNP protein/Ribosome production factor 1	Family
A	IPR007109	Brix domain	Domain
B	IPR012173	U3 small nucleolar ribonucleoprotein complex, subunit Mpp10	Family

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.