URI1

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Identifiers
Aliases
External IDs	GeneCards: [1]
Orthologs
Species	Human	Mouse
Entrez	n/a	n/a
Ensembl	n/a	n/a
UniProt	n/a	n/a
RefSeq (mRNA)	n/a	n/a
RefSeq (protein)	n/a	n/a
Location (UCSC)	n/a	n/a
PubMed search	n/a	n/a
Wikidata
View/Edit Human

Unconventional prefoldin RPB5 interactor, also called URI1, is a protein that in humans is encoded by the URI1 gene.

Function

The protein encoded by this gene binds to RNA polymerase II subunit 5 (RPB5) and negatively modulates transcription through its binding to RPB5. The encoded protein seems to have inhibitory effects on various types of activated transcription, but it requires the RPB5-binding region. This protein acts as a corepressor. It is suggested that it may require signaling processes for its function or that it negatively modulates genes in the chromatin structure. Two alternatively spliced transcript variants encoding different isoforms have been described for this gene.

Interactions

URI1 has been shown to interact with DMAP1 and STAP1.

Model organisms

Model organisms have been used in the study of URI1 function. A conditional knockout mouse line called Uri1^{tm1a(EUCOMM)Wtsi} was generated at the Wellcome Trust Sanger Institute. Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion. Additional screens performed: - In-depth immunological phenotyping

Uri1 knockout mouse phenotype

Characteristic	Phenotype
All data available at.
Peripheral blood leukocytes 6 Weeks	Abnormal
Haematology 6 Weeks	Normal
Insulin	Normal
Homozygous viability at P14	Normal
Homozygous Fertility	Normal
Body weight	Normal
Neurological assessment	Normal
Grip strength	Normal
Dysmorphology	Normal
Indirect calorimetry	Normal
Glucose tolerance test	Normal
Auditory brainstem response	Normal
DEXA	Normal
Radiography	Normal
Eye morphology	Normal
Clinical chemistry	Normal
Haematology 16 Weeks	Normal
Peripheral blood leukocytes 16 Weeks	Normal
Heart weight	Normal
Salmonella infection	Normal

External links

• Human URI1 genome location and URI1 gene details page in the UCSC Genome Browser.

Further reading

• Liu L, McKeehan WL (2002). "Sequence analysis of LRPPRC and its SEC1 domain interaction partners suggests roles in cytoskeletal organization, vesicular trafficking, nucleocytosolic shuttling, and chromosome activity". Genomics. 79 (1): 124–36. doi:10.1006/geno.2001.6679. PMC 3241999. PMID 11827465.
• Wei W, Gu JX, Zhu CQ, Sun FY, Dorjsuren D, Lin Y, Murakami S (2003). "Interaction with general transcription factor IIF (TFIIF) is required for the suppression of activated transcription by RPB5-mediating protein (RMP)". Cell Res. 13 (2): 111–20. doi:10.1038/sj.cr.7290155. PMID 12737519.
• Gstaiger M, Luke B, Hess D, Oakeley EJ, Wirbelauer C, Blondel M, Vigneron M, Peter M, Krek W (2003). "Control of nutrient-sensitive transcription programs by the unconventional prefoldin URI". Science. 302 (5648): 1208–12. doi:10.1126/science.1088401. PMID 14615539.
• Bouwmeester T, Bauch A, Ruffner H, Angrand PO, Bergamini G, Croughton K, Cruciat C, Eberhard D, Gagneur J, Ghidelli S, Hopf C, Huhse B, Mangano R, Michon AM, Schirle M, Schlegl J, Schwab M, Stein MA, Bauer A, Casari G, Drewes G, Gavin AC, Jackson DB, Joberty G, Neubauer G, Rick J, Kuster B, Superti-Furga G (2004). "A physical and functional map of the human TNF-alpha/NF-kappa B signal transduction pathway". Nat. Cell Biol. 6 (2): 97–105. doi:10.1038/ncb1086. PMID 14743216.
• Delgermaa L, Hayashi N, Dorjsuren D, Nomura T, Thuy le TT, Murakami S (2004). "Subcellular Localization of RPB5-Mediating Protein and Its Putative Functional Partner". Mol. Cell. Biol. 24 (19): 8556–66. doi:10.1128/MCB.24.19.8556-8566.2004. PMC 516735. PMID 15367675.
• Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M (2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell. 127 (3): 635–48. doi:10.1016/j.cell.2006.09.026. PMID 17081983.