Protein: U3 small nucleolar RNA-associated protein 18 homolog (Q9Y5J1)
Organism: Homo sapiens (Human)
Function: Part of the small subunit (SSU) processome, first precursor of the small eukaryotic ribosomal subunit. During the assembly of the SSU processome in the nucleolus, many ribosome biogenesis factors, an RNA chaperone and ribosomal proteins associate with the nascent pre- rRNA and work in concert to generate RNA folding, modifications, rearrangements and cleavage as well as targeted degradation of pre- ribosomal RNA by the RNA exosome. Involved in nucleolar processing of pre-18S ribosomal RNA
Subcellular location: Nucleus, nucleolus
Sequence: MPPERRRRMKLDRRTGAKPKRKPGMRPDWKAGAGPGGPPQKPAPSSQRKPPARPSAAAAAIAVAAAEEERRLRQRNRLRLEEDKPAVERCLEELVFGDVENDEDALLRRLRGPRVQEHEDSGDSEVENEAKGNFPPQKKPVWVDEEDEDEEMVDMMNNRFRKDMMKNASESKLSKDNLKKRLKEEFQHAMGGVPAWAETTKRKTSSDDESEEDEDDLLQRTGNFISTSTSLPRGILKMKNCQHANAERPTVARISSVQFHPGAQIVMVAGLDNAVSLFQVDGKTNPKIQSIYLERFPIFKACFSANGEEVLATSTHSKVLYVYDMLAGKLIPVHQVRGLKEKIVRSFEVSPDGSFLLINGIAGYLHLLAMKTKELIGSMKINGRVAASTFSSDSKKVYASSGDGEVYVWDVNSRKCLNRFVDEGSLYGLSIATSRNGQYVACGSNCGVVNIYNQDSCLQETNPKPIKAIMNLVTGVTSLTFNPTTEILAIASEKMKEAVRLVHLPSCTVFSNFPVIKNKNISHVHTMDFSPRSGYFALGNEKGKALMYRLHHYSDF
InterPro domains: - IPR036322: WD40-repeat-containing domain superfamily (homologous_superfamily) [248-549]
- IPR015943: WD40/YVTN repeat-like-containing domain superfamily (homologous_superfamily) [230-551]
- IPR001680: WD40 repeat (repeat) [239-549]
- IPR019775: WD40 repeat, conserved site (conserved_site) [397-411]
- IPR045161: U3 small nucleolar RNA-associated protein 18 (family) [16-553]
Interaction partners: - HEAT repeat-containing protein 1
- U3 small nucleolar RNA-associated protein 4 homolog
- U3 small nucleolar RNA-associated protein 15 homolog
- WD repeat-containing protein 75
- Nucleolar protein 56
- U3 small nucleolar RNA-associated protein 6 homolog
- Neuroguidin
- WD repeat-containing protein 46
- KRR1 small subunit processome component homolog
- Bystin
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0097159 (organic cyclic compound binding), GO:1901363 (heterocyclic compound binding), GO:0003676 (nucleic acid binding), GO:0003723 (RNA binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0071840 (cellular component organization or biogenesis), GO:0044238 (primary metabolic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0006725 (cellular aromatic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:0044085 (cellular component biogenesis), GO:0006139 (nucleobase-containing compound metabolic process), GO:0043170 (macromolecule metabolic process), GO:0046483 (heterocycle metabolic process), GO:0090304 (nucleic acid metabolic process), GO:0010467 (gene expression), GO:0022613 (ribonucleoprotein complex biogenesis), GO:0042254 (ribosome biogenesis), GO:0016070 (RNA metabolic process), GO:0006396 (RNA processing), GO:0034470 (ncRNA processing), GO:0006364 (rRNA processing), GO:0034660 (ncRNA metabolic process), GO:0016072 (rRNA metabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0031975 (envelope), GO:0016020 (membrane), GO:0031974 (membrane-enclosed lumen), GO:0012505 (endomembrane system), GO:0005654 (nucleoplasm), GO:0031090 (organelle membrane), GO:0031967 (organelle envelope), GO:0043233 (organelle lumen), GO:0005635 (nuclear envelope), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043228 (non-membrane-bounded organelle), GO:0031965 (nuclear membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0031981 (nuclear lumen), GO:0005730 (nucleolus), GO:0005634 (nucleus)