Annotations: 5YZ4

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Fcf1	e5yz4A1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: Fcf1	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF04900	Fcf1 (Fcf1)	Fcf1	Fcf1 is a nucleolar protein involved in pre-rRNA processing [1]. Depletion of yeast Fcf1 and Fcf2 leads to a decrease in synthesis of the 18S rRNA and results in a deficit in 40S ribosomal subunits [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	rRNA-processing protein fcf1	endonuclease activity nuclease activity catalytic activity, acting on RNA RNA endonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity catalytic activity	ribonucleoprotein complex biogenesis RNA metabolic process rRNA processing maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process maturation of SSU-rRNA endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) cellular component organization or biogenesis RNA processing rRNA metabolic process ribonucleoprotein complex biogenesis RNA metabolic process rRNA processing maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) cellular component biogenesis nucleobase-containing compound metabolic process RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process maturation of SSU-rRNA endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) cellular component organization or biogenesis RNA processing rRNA metabolic process endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) maturation of 5.8S rRNA primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process ribosomal small subunit biogenesis nucleic acid metabolic process maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) biosynthetic process cellular process metabolic process macromolecule metabolic process rRNA 5'-end processing endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) RNA 5'-end processing	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen protein-containing complex preribosome nuclear protein-containing complex small-subunit processome ribonucleoprotein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002716	PIN domain	Domain
A	IPR006984	Fcf1/UTP23	Family
A	IPR029060	PIN-like domain superfamily	Homologous Superfamily
A	IPR037503	rRNA-processing protein Fcf1, PIN 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.