Receptor for activated C kinase 1 (RACK1), also known as guanine nucleotide-binding protein subunit beta-2-like 1 (GNB2L1), is a 35 kDa protein that in humans is encoded by the RACK1 gene.[5][6]

Quick Facts RACK1, Available structures ...
RACK1
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesRACK1, Gnb2-rs1, H12.3, HLC-7, PIG21, GNB2L1, receptor for activated C kinase 1
External IDsOMIM: 176981; MGI: 101849; HomoloGene: 4446; GeneCards: RACK1; OMA:RACK1 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_006098

NM_008143

RefSeq (protein)

NP_006089

NP_032169

Location (UCSC)Chr 5: 181.24 – 181.25 MbChr 11: 48.69 – 48.7 Mb
PubMed search[3][4]
Wikidata
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Function

RACK1 was originally isolated and identified as an intracellular protein receptor for protein kinase C, noting the significant homology to the beta subunit of heterotrimeric G proteins.[5] Later studies established RACK1, and its yeast homolog Asc1, as a core ribosomal protein of the eukaryotic small (40S) ribosomal subunit.[7][8][9] Much of the function of Asc1/RACK1 appears to result from its position on the 'head' of the 40S ribosomal subunit.[10] Asc1/RACK1 participates in several aspects of eukaryotic translation and ribosome quality control, including IRES-mediated translation,[11] non-stop decay,[12] non-functional 18S ribosomal RNA decay,[13] and frameshifting.[14]

Interactions

RACK1 is positioned at the solvent-exposed surface of the 40S ribosomal subunit, where it is held in place through contacts with both the 18S rRNA and other ribosomal proteins, including uS3, uS9, and eS17. Additionally, RACK1 has been shown to interact with:

See also

References

Further reading

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