Mitochondrial ribosomal protein L20

Protein-coding gene in the species Homo sapiens
MRPL20
Available structures
PDBOrtholog search: PDBe RCSB
List of PDB id codes

3J7Y, 3J9M

Identifiers
AliasesMRPL20, L20mt, MRP-L20, mitochondrial ribosomal protein L20
External IDsOMIM: 611833; MGI: 2137221; HomoloGene: 9941; GeneCards: MRPL20; OMA:MRPL20 - orthologs
Gene location (Human)
Chromosome 1 (human)
Chr.Chromosome 1 (human)[1]
Chromosome 1 (human)
Genomic location for MRPL20
Genomic location for MRPL20
Band1p36.33Start1,401,909 bp[1]
End1,407,293 bp[1]
Gene location (Mouse)
Chromosome 4 (mouse)
Chr.Chromosome 4 (mouse)[2]
Chromosome 4 (mouse)
Genomic location for MRPL20
Genomic location for MRPL20
Band4 E2|4 87.44 cMStart155,887,335 bp[2]
End155,894,432 bp[2]
RNA expression pattern
Bgee
HumanMouse (ortholog)
Top expressed in
  • palpebral conjunctiva

  • epithelium of nasopharynx

  • germinal epithelium

  • gingival epithelium

  • Skeletal muscle tissue of rectus abdominis

  • muscle of thigh

  • amniotic fluid

  • corpus epididymis

  • mucosa of paranasal sinus

  • Skeletal muscle tissue of biceps brachii
Top expressed in
  • gastrula

  • right kidney

  • embryo

  • embryo

  • spermatocyte

  • spermatid

  • morula

  • epiblast

  • submandibular gland

  • neural tube
More reference expression data
BioGPS
n/a
Gene ontology
Molecular function
  • rRNA binding
  • protein binding
  • RNA binding
  • structural constituent of ribosome
Cellular component
  • mitochondrial inner membrane
  • ribosome
  • intracellular anatomical structure
  • mitochondrial ribosome
  • mitochondrion
  • mitochondrial large ribosomal subunit
Biological process
  • mitochondrial translational elongation
  • mitochondrial translational termination
  • protein biosynthesis
  • ribosomal large subunit assembly
Sources:Amigo / QuickGO
Orthologs
SpeciesHumanMouse
Entrez

55052

66448

Ensembl

ENSG00000242485

ENSMUSG00000029066

UniProt

Q9BYC9

Q9CQL4

RefSeq (mRNA)

NM_017971
NM_001318485

NM_025570

RefSeq (protein)

NP_001305414
NP_060441

NP_079846

Location (UCSC)Chr 1: 1.4 – 1.41 MbChr 4: 155.89 – 155.89 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

39S ribosomal protein L20, mitochondrial is a protein that in humans is encoded by the MRPL20 gene.[5]

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. A pseudogene corresponding to this gene is found on chromosome 21q.[5]

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000242485 – Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000029066 – Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ a b "Entrez Gene: MRPL20 mitochondrial ribosomal protein L20".

Further reading

  • Venter JC, Adams MD, Myers EW, et al. (2001). "The sequence of the human genome". Science. 291 (5507): 1304–51. Bibcode:2001Sci...291.1304V. doi:10.1126/science.1058040. PMID 11181995.
  • Suzuki T, Terasaki M, Takemoto-Hori C, et al. (2001). "Structural compensation for the deficit of rRNA with proteins in the mammalian mitochondrial ribosome. Systematic analysis of protein components of the large ribosomal subunit from mammalian mitochondria". J. Biol. Chem. 276 (24): 21724–36. doi:10.1074/jbc.M100432200. PMID 11279069.
  • Kenmochi N, Suzuki T, Uechi T, et al. (2001). "The human mitochondrial ribosomal protein genes: mapping of 54 genes to the chromosomes and implications for human disorders". Genomics. 77 (1–2): 65–70. doi:10.1006/geno.2001.6622. PMID 11543634.
  • Koc EC, Burkhart W, Blackburn K, et al. (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.
  • Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
  • Zhang Z, Gerstein M (2003). "Identification and characterization of over 100 mitochondrial ribosomal protein pseudogenes in the human genome". Genomics. 81 (5): 468–80. doi:10.1016/S0888-7543(03)00004-1. PMID 12706105.
  • Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
  • Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
  • Stelzl U, Worm U, Lalowski M, et al. (2005). "A human protein-protein interaction network: a resource for annotating the proteome". Cell. 122 (6): 957–68. doi:10.1016/j.cell.2005.08.029. hdl:11858/00-001M-0000-0010-8592-0. PMID 16169070. S2CID 8235923.
  • Gregory SG, Barlow KF, McLay KE, et al. (2006). "The DNA sequence and biological annotation of human chromosome 1". Nature. 441 (7091): 315–21. Bibcode:2006Natur.441..315G. doi:10.1038/nature04727. PMID 16710414.


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  • 2ftc: Structural Model for the Large Subunit of the Mammalian Mitochondrial Ribosome
    2ftc: Structural Model for the Large Subunit of the Mammalian Mitochondrial Ribosome
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Proteins
Initiation factor
Bacterial
Mitochondrial
Archaeal
  • aIF1
  • aIF2
  • aIF5
  • aIF6
Eukaryotic
eIF1
eIF2
eIF3
eIF4
eIF5
eIF6
Elongation factor
Bacterial/​Mitochondrial
Archaeal/​Eukaryotic
Release factor
Ribosomal Proteins
Cytoplasmic
60S subunit
40S subunit
Mitochondrial
39S subunit
28S subunit
Other concepts
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