Annotations: 4CHH

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF08190	e4chhA1	A: a+b three layers	X: Protein interacting with HSP90 1 (Pih1) N-terminal domain (From Topology)	H: Protein interacting with HSP90 1 (Pih1) N-terminal domain (From Topology)	T: Protein interacting with HSP90 1 (Pih1) N-terminal domain	F: PF08190	ECOD (1.6)
B	PF08190	e4chhB1	A: a+b three layers	X: Protein interacting with HSP90 1 (Pih1) N-terminal domain (From Topology)	H: Protein interacting with HSP90 1 (Pih1) N-terminal domain (From Topology)	T: Protein interacting with HSP90 1 (Pih1) N-terminal domain	F: PF08190	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF08190	PIH1 N-terminal domain (PIH1)	PIH1 N-terminal domain	This domain is involved in pre-rRNA processing [1]. It has has been shown to be required either for nucleolar retention or correct assembly of the box C/D snoRNP in Saccharomyces cerevisiae [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	PROTEIN INTERACTING WITH HSP90 1	-	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process regulation of protein stability biological regulation regulation of biological quality protein stabilization ribonucleoprotein complex biogenesis protein-containing complex organization small nucleolar ribonucleoprotein complex assembly 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 box C/D snoRNP assembly organonitrogen compound metabolic process protein maturation protein folding protein metabolic process regulation of cellular component size regulation of cell size regulation of anatomical structure size rRNA processing ribosome biogenesis rRNA metabolic process ncRNA metabolic process nucleic acid catabolic process mRNA processing mRNA metabolic process	protein-containing complex R2TP complex ribonucleoprotein 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, B	IPR041441	Pih1, Ascomycota, CS domain	Domain
A, B	IPR012981	PIH1, N-terminal	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.