LARP1

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Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez
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RefSeq (mRNA)

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RefSeq (protein)

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La-related protein 1 is a protein that in humans is encoded by the LARP1 gene.[1][2][1][3][2]

Function

All LARP proteins, including human LARP, contain 2 conserved regions. The first conserved region shares homology with La proteins (called the La motif, see SSB) whereas the second conserved region (called the LA- motif) is restricted to LARP proteins. Mouse Larp1 is expressed in dorsal root ganglia and spinal cord, as well as in developing organs characterized by epithelial-mesenchymal interactions.[2]

LARP-1 binds a specific type of mRNA called TOP mRNAs.These TOP mRNAs are so-called because they bear a 5'TOP (Terminal oligopyrimidine) motif.. LARP-1 also appears to down-regulate the Ras-MAPK pathway. LARP-1 protein colocalizes with P bodies, which function in RNA degradation. We suggest that LARP-1 functions in P-bodies to attenuate the abundance of conserved Ras-MAPK mRNAs. The cluster of LARP-1 homologs may function to control the expression of key developmental regulators.[4]

References

  1. 1.0 1.1 Nagase T, Ishikawa K, Suyama M, Kikuno R, Miyajima N, Tanaka A, Kotani H, Nomura N, Ohara O (Apr 1999). "Prediction of the coding sequences of unidentified human genes. XI. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro". DNA Res. 5 (5): 277–86. doi:10.1093/dnares/5.5.277. PMID 9872452.
  2. 2.0 2.1 2.2 Chauvet S, Maurel-Zaffran C, Miassod R, Jullien N, Pradel J, Aragnol D (Aug 2000). "dlarp, a new candidate Hox target in Drosophila whose orthologue in mouse is expressed at sites of epithelium/mesenchymal interactions". Dev Dyn. 218 (3): 401–13. doi:10.1002/1097-0177(200007)218:3<401::AID-DVDY1009>3.0.CO;2-6. PMID 10878606.
  3. "Entrez Gene: LARP1 La ribonucleoprotein domain family, member 1".
  4. Nykamp K, Lee MH, Kimble J (July 2008). "C. elegans La-related protein, LARP-1, localizes to germline P bodies and attenuates Ras-MAPK signaling during oogenesis". RNA. 14 (7): 1378–89. doi:10.1261/rna.1066008. PMC 2441978. PMID 18515547.

Further reading