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MRPL22 mitochondrial ribosomal protein L22 [ Homo sapiens (human) ]

Gene ID: 29093, updated on 6-Jan-2019

Summary

Official Symbol
MRPL22provided by HGNC
Official Full Name
mitochondrial ribosomal protein L22provided by HGNC
Primary source
HGNC:HGNC:14480
See related
Ensembl:ENSG00000082515 MIM:611835
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
L22mt; RPML25; HSPC158; MRP-L22; MRP-L25
Summary
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 L22 ribosomal protein family. A pseudogene corresponding to this gene is found on chromosome 4q. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
Expression
Ubiquitous expression in testis (RPKM 4.5), adrenal (RPKM 4.1) and 25 other tissues See more
Orthologs

Genomic context

See MRPL22 in Genome Data Viewer
Location:
5q33.2
Exon count:
7
Annotation release Status Assembly Chr Location
109 current GRCh38.p12 (GCF_000001405.38) 5 NC_000005.10 (154941073..154969411)
105 previous assembly GRCh37.p13 (GCF_000001405.25) 5 NC_000005.9 (154320633..154348971)

Chromosome 5 - NC_000005.10Genomic Context describing neighboring genes Neighboring gene CCR4-NOT transcription complex subunit 8 Neighboring gene gem nuclear organelle associated protein 5 Neighboring gene cytochrome c oxidase subunit 7A2 like pseudogene Neighboring gene kinesin family member 4B

Genomic regions, transcripts, and products

Expression

  • Project title: HPA RNA-seq normal tissues
  • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
  • BioProject: PRJEB4337
  • Publication: PMID 24309898
  • Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

GeneRIFs: Gene References Into FunctionsWhat's a GeneRIF?

Pathways from BioSystems

  • Mitochondrial translation, organism-specific biosystem (from REACTOME)
    Mitochondrial translation, organism-specific biosystemOf the roughly 1000 human mitochondrial proteins only 13 proteins, all of them hydrophobic inner membrane proteins that are components of the oxidative phosphorylation apparatus, are encoded in the m...
  • Mitochondrial translation elongation, organism-specific biosystem (from REACTOME)
    Mitochondrial translation elongation, organism-specific biosystemTranslation elongation proceeds by cycles of aminoacyl-tRNAs binding, peptide bond formation, and displacement of deacylated tRNAs (reviewed in Christian and Spremulli 2012). In each cycle an aminoac...
  • Mitochondrial translation initiation, organism-specific biosystem (from REACTOME)
    Mitochondrial translation initiation, organism-specific biosystemTranslation initiates with the mitochondrial mRNA binding the 28S subunit:MTIF3 (28S subunit:IF-3Mt, 28S subunit:IF3mt) complex together with MTIF2:GTP (IF-2Mt:GTP, IF2mt:GTP) (reviewed in Christian ...
  • Mitochondrial translation termination, organism-specific biosystem (from REACTOME)
    Mitochondrial translation termination, organism-specific biosystemTranslation is terminated when MTRF1L:GTP (MTRF1a:GTP) recognizes a UAA or UAG termination codon in the mRNA at the A site of the ribosome (Soleimanpour-Lichaei et al. 2007, reviewed in Richter et al...
  • Organelle biogenesis and maintenance, organism-specific biosystem (from REACTOME)
    Organelle biogenesis and maintenance, organism-specific biosystemThis module describes the biogenesis of organelles. Organelles are subcellular structures of distinctive morphology and function. The organelles of human cells include: mitochondria, endoplasmic reti...
  • Ribosome, organism-specific biosystem (from KEGG)
    Ribosome, organism-specific biosystem
    Ribosome
  • Ribosome, conserved biosystem (from KEGG)
    Ribosome, conserved biosystem
    Ribosome

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Homology

Clone Names

  • DKFZp781F1071

Gene Ontology Provided by GOA

Function Evidence Code Pubs
RNA binding HDA PubMed 
structural constituent of ribosome IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
Process Evidence Code Pubs
mitochondrial translational elongation TAS
Traceable Author Statement
more info
 
mitochondrial translational termination TAS
Traceable Author Statement
more info
 
ribosome assembly IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
Component Evidence Code Pubs
large ribosomal subunit IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
mitochondrial inner membrane TAS
Traceable Author Statement
more info
 
mitochondrial large ribosomal subunit IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
mitochondrial large ribosomal subunit IDA
Inferred from Direct Assay
more info
PubMed 
mitochondrion IDA
Inferred from Direct Assay
more info
PubMed 
mitochondrion ISS
Inferred from Sequence or Structural Similarity
more info
 

General protein information

Preferred Names
39S ribosomal protein L22, mitochondrial
Names
39S ribosomal protein L25, mitochondrial
L25mt
mitochondrial large ribosomal subunit protein uL22m

NCBI Reference Sequences (RefSeq)

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

  1. NM_001014990.2NP_001014990.1  39S ribosomal protein L22, mitochondrial isoform b

    See identical proteins and their annotated locations for NP_001014990.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) lacks an alternate coding exon compared to variant 1. The resulting isoform (b) is shorter at the N-terminus compared to isoform a.
    Source sequence(s)
    AC008410, BP372420, CR933679
    Consensus CDS
    CCDS43391.1
    UniProtKB/Swiss-Prot
    Q9NWU5
    Related
    ENSP00000265229.8, ENST00000265229.12
    Conserved Domains (1) summary
    pfam00237
    Location:192
    Ribosomal_L22; Ribosomal protein L22p/L17e
  2. NM_014180.4NP_054899.2  39S ribosomal protein L22, mitochondrial isoform a

    See identical proteins and their annotated locations for NP_054899.2

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) represents the longer transcript and encodes the longer isoform (a).
    Source sequence(s)
    AC008410, AK000601, BP372420, CR933679
    Consensus CDS
    CCDS4331.1
    UniProtKB/Swiss-Prot
    Q9NWU5
    Related
    ENSP00000431040.1, ENST00000523037.5
    Conserved Domains (1) summary
    pfam00237
    Location:71172
    Ribosomal_L22; Ribosomal protein L22p/L17e

RefSeqs of Annotated Genomes: Homo sapiens Annotation Release 109

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p12 Primary Assembly

Genomic

  1. NC_000005.10 Reference GRCh38.p12 Primary Assembly

    Range
    154941073..154969411
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)
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