Annotations: 2MJF

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	EUF08024	e2mjfB1	A: alpha arrays	X: C-terminal domain of Hit1 (From Topology)	H: C-terminal domain of Hit1 (From Topology)	T: C-terminal domain of Hit1	F: EUF08024	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.250.1790	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
B	1.20.1440.260	Mainly Alpha	Up-down Bundle	de novo design (two linked rop proteins)		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF18268	Hit1 C-terminal (Hit1_C)	Hit1 C-terminal	This domain is found in Hit1 protein (Hit1p) present in Saccharomyces cerevisiae. Hit1p contributes to C/D small nucleolar RNPs (snoRNPs) stability and pre-RNA maturation kinetics by associating with U3 snoRNA precursors and influencing its 3'-end p ...	This domain is found in Hit1 protein (Hit1p) present in Saccharomyces cerevisiae. Hit1p contributes to C/D small nucleolar RNPs (snoRNPs) stability and pre-RNA maturation kinetics by associating with U3 snoRNA precursors and influencing its 3'-end processing. Snu13p-Rsa1p-Hit1p heterotrimer binds C/D snoRNAs. C/D snoRNAs are essential for the biogenesis of ribosomes and spliceosomes. The domain adopts a Pac-Hit fold that forms a claw which locks the alpha-1 helix of Rsa1p, while the Rsa1p alpha-2 helix packs against the exposed surface of the Hit1p Pac-Hit domain alpha-3 helix [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Ribosome assembly 1 protein	-	ribonucleoprotein complex biogenesis organelle assembly protein-containing complex organization non-membrane-bounded organelle assembly ribosomal large subunit biogenesis protein-RNA complex assembly cellular component biogenesis cellular component organization ribosome biogenesis organelle organization protein-RNA complex organization cellular component assembly ribosomal large subunit assembly protein-containing complex assembly ribonucleoprotein complex biogenesis organelle assembly protein-containing complex organization non-membrane-bounded organelle assembly ribosomal large subunit biogenesis protein-RNA complex assembly cellular component biogenesis cellular component organization ribosome biogenesis organelle organization protein-RNA complex organization cellular component assembly ribosomal large subunit assembly protein-containing complex assembly cellular process cellular component organization or biogenesis ribosome assembly small nucleolar ribonucleoprotein complex assembly box C/D snoRNP assembly	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen
B	Protein HIT1	cation binding ion binding binding metal ion binding small molecule binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing cellular component biogenesis nucleobase-containing compound metabolic process 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 cellular component biogenesis nucleobase-containing compound metabolic process 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 ribosomal large subunit biogenesis macromolecule biosynthetic process nucleic acid metabolic process maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) organic cyclic compound metabolic process biosynthetic process ncRNA metabolic process nucleic acid catabolic process cellular process metabolic process macromolecule metabolic process maturation of LSU-rRNA localization macromolecule localization snoRNA localization RNA localization protein-containing complex organization small nucleolar ribonucleoprotein complex assembly protein-RNA complex assembly cellular component organization protein-RNA complex organization cellular component assembly protein-containing complex assembly box C/D snoRNP assembly	protein-containing complex ribonucleoprotein complex pre-snoRNP complex intracellular anatomical structure cytoplasm cellular anatomical entity membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR019496	FMR1-interacting protein 1, conserved domain	Domain
B	IPR040722	Hit1, C-terminal	Domain
B	IPR007529	Zinc finger, HIT-type	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.