MRPL18

From Wikipedia, the free encyclopedia
Mitochondrial ribosomal protein L18
Identifiers
SymbolsMRPL18; L18mt; MRP-L18
External IDsOMIM: 611831 MGI: 1914931 HomoloGene: 8566 GeneCards: MRPL18 Gene
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez2907467681
EnsemblENSG00000112110ENSMUSG00000057388
UniProtQ9H0U6Q9CQL5
RefSeq (mRNA)NM_014161NM_026310
RefSeq (protein)NP_054880NP_080586
Location (UCSC)Chr 6:
160.21 – 160.22 Mb
Chr 17:
12.91 – 12.92 Mb
PubMed search

39S ribosomal protein L18, mitochondrial is a protein that in humans is encoded by the MRPL18 gene.[1][2][3]

Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a 39S subunit protein that belongs to the L18P ribosomal protein family. Three polymorphic sites exist in this gene, one of which is three nt in length which causes an extra aa near the N-terminus.[3]

References

  1. Zhang QH, Ye M, Wu XY, Ren SX, Zhao M, Zhao CJ, Fu G, Shen Y, Fan HY, Lu G, Zhong M, Xu XR, Han ZG, Zhang JW, Tao J, Huang QH, Zhou J, Hu GX, Gu J, Chen SJ, Chen Z (Nov 2000). "Cloning and functional analysis of cDNAs with open reading frames for 300 previously undefined genes expressed in CD34+ hematopoietic stem/progenitor cells". Genome Res 10 (10): 1546–60. doi:10.1101/gr.140200. PMC 310934. PMID 11042152. 
  2. Koc EC, Burkhart W, Blackburn K, Moyer MB, Schlatzer DM, Moseley A, Spremulli LL (Nov 2001). "The large subunit of the mammalian mitochondrial ribosome. Analysis of the complement of ribosomal proteins present". J Biol Chem 276 (47): 43958–69. doi:10.1074/jbc.M106510200. PMID 11551941. 
  3. 3.0 3.1 "Entrez Gene: MRPL18 mitochondrial ribosomal protein L18". 

Further reading

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