TOMM20

Protein-coding gene in the species Homo sapiens

TOMM20

Identifiers

Aliases

TOMM20 , MAS20, MOM19, TOM20, translocase of outer mitochondrial membrane 20

External IDs

OMIM: 601848; MGI: 1915202; GeneCards: TOMM20

Available structures

PDB

Ortholog search: PDBe RCSB

List of PDB id codes
4APO

Gene location (Human)
Chromosome 1 (human)
Chr.	Chromosome 1 (human) ^[1]
Chromosome 1 (human) Genomic location for TOMM20 Genomic location for TOMM20
Band	1q42.3	Start	235,109,341 bp ^[1]
Band	1q42.3	End	235,128,837 bp ^[1]

Gene location (Mouse)
Chromosome 8 (mouse)
Chr.	Chromosome 8 (mouse)^[2]
Chromosome 8 (mouse) Genomic location for TOMM20 Genomic location for TOMM20
Band	8\|8 E2	Start	127,657,417 bp ^[2]
Band	8\|8 E2	End	127,672,594 bp ^[2]

RNA expression pattern

Bgee

Human	Mouse (ortholog)
Top expressed in parotid gland skin of thigh Brodmann area 10 frontal pole skin of hip middle frontal gyrus caput epididymis lateral nuclear group of thalamus corpus epididymis pons	Top expressed in yolk sac embryo embryo olfactory tubercle nucleus accumbens superior frontal gyrus subiculum ventromedial nucleus temporal lobe dentate gyrus of hippocampal formation granule cell
More reference expression data

BioGPS

More reference expression data

Gene ontology
Molecular function	protein-transporting ATPase activity protein binding mitochondrion targeting sequence binding unfolded protein binding protein transmembrane transporter activity
Cellular component	integral component of membrane mitochondria associated membranes membrane mitochondrial outer membrane translocase complex integral component of mitochondrial outer membrane mitochondrial outer membrane mitochondrion mitochondrial envelope
Biological process	protein targeting tRNA import into mitochondrion mitochondrial outer membrane translocase complex assembly protein import into mitochondrial matrix protein transport intracellular protein transport protein targeting to mitochondrion protein deubiquitination response to muscle activity response to 3,3',5-triiodo-L-thyronine macroautophagy
Sources:Amigo / QuickGO

Orthologs

Databases

NCBI: entry; OMA: entry

Species

Human

Mouse

Entrez


9804


67952

Ensembl


ENSG00000173726


ENSMUSG00000093904

UniProt


Q15388


Q9DCC8

RefSeq (mRNA)

NM_014765

NM_024214

RefSeq (protein)

NP_055580
NP_055580.1

NP_077176

Location (UCSC)

Chr 1: 235.11 – 235.13 Mb

Chr 8: 127.66 – 127.67 Mb

PubMed search

^[3]

^[4]

Wikidata

View/Edit Human View/Edit Mouse

Mitochondrial import receptor subunit TOM20 homolog is a protein encoded by the TOMM20 gene in humans.^[5]^[6] TOM20 functions as part of the receptor systems within the translocase of the outer membrane (TOM) complex in the outer mitochondrial membrane.

Function

[edit ]

In mitochondrial protein import, TOM20 is closely associated with the pore-forming TOM40 complex and acts by recognizing and binding the N-terminal MTSs (matrix-targeting sequences), which form an amphipathic alpha helix and aid passage of the target proteins into the mitochondrial matrix.^[7]

References

[edit ]

1 2 3 GRCh38: Ensembl release 89: ENSG00000173726 – Ensembl, May 2017
1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000093904 – Ensembl, May 2017
↑ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
↑ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
↑ Likić VA, Perry A, Hulett J, Derby M, Traven A, Waller RF, et al. (March 2005). "Patterns that define the four domains conserved in known and novel isoforms of the protein import receptor Tom20". Journal of Molecular Biology. 347 (1): 81–93. doi:10.1016/j.jmb.2004年12月05日7. PMID 15733919.
↑ "Entrez Gene: TOMM20 translocase of outer mitochondrial membrane 20 homolog (yeast)".
↑ Hansen KG, Herrmann JM (June 2019). "Transport of Proteins into Mitochondria". The Protein Journal. 38 (3): 330–342. doi:10.1007/s10930-019-09819-6. PMID 30868341. S2CID 76662487.

Nomura N, Miyajima N, Sazuka T, Tanaka A, Kawarabayasi Y, Sato S, etal. (1995). "Prediction of the coding sequences of unidentified human genes. I. The coding sequences of 40 new genes (KIAA0001-KIAA0040) deduced by analysis of randomly sampled cDNA clones from human immature myeloid cell line KG-1". DNA Research. 1 (1): 27–35. doi:10.1093/dnares/1.1.27 . PMID 7584026.
Nomura N, Miyajima N, Sazuka T, Tanaka A, Kawarabayasi Y, Sato S, etal. (1995). "Prediction of the coding sequences of unidentified human genes. I. The coding sequences of 40 new genes (KIAA0001-KIAA0040) deduced by analysis of randomly sampled cDNA clones from human immature myeloid cell line KG-1 (supplement)". DNA Research. 1 (1): 47–56. doi:10.1093/dnares/1.1.47 . PMID 7584028.
Schleiff E, Shore GC, Goping IS (March 1997). "Human mitochondrial import receptor, Tom20p. Use of glutathione to reveal specific interactions between Tom20-glutathione S-transferase and mitochondrial precursor proteins". FEBS Letters. 404 (2–3): 314–318. doi:10.1016/S0014-5793(97)00145-2 . PMID 9119086. S2CID 29177508.
Schleiff E, Shore GC, Goping IS (July 1997). "Interactions of the human mitochondrial protein import receptor, hTom20, with precursor proteins in vitro reveal pleiotropic specificities and different receptor domain requirements". The Journal of Biological Chemistry. 272 (28): 17784–17789. doi:10.1074/jbc.272.28.17784 . PMID 9211931.
Schleiff E, Turnbull JL (September 1998). "Characterization of the N-terminal targeting signal binding domain of the mitochondrial outer membrane receptor, Tom20". Biochemistry. 37 (38): 13052–13058. doi:10.1021/bi980746y. PMID 9748310.
Yano M, Kanazawa M, Terada K, Takeya M, Hoogenraad N, Mori M (October 1998). "Functional analysis of human mitochondrial receptor Tom20 for protein import into mitochondria". The Journal of Biological Chemistry. 273 (41): 26844–26851. doi:10.1074/jbc.273.41.26844 . PMID 9756929.
Hernández JM, Giner P, Hernández-Yago J (November 1999). "Gene structure of the human mitochondrial outer membrane receptor Tom20 and evolutionary study of its family of processed pseudogenes". Gene. 239 (2): 283–291. doi:10.1016/S0378-1119(99)00409-6. PMID 10548729.
Suzuki H, Okazawa Y, Komiya T, Saeki K, Mekada E, Kitada S, etal. (December 2000). "Characterization of rat TOM40, a central component of the preprotein translocase of the mitochondrial outer membrane". The Journal of Biological Chemistry. 275 (48): 37930–37936. doi:10.1074/jbc.M006558200 . PMID 10980201.
Yano M, Hoogenraad N, Terada K, Mori M (October 2000). "Identification and functional analysis of human Tom22 for protein import into mitochondria". Molecular and Cellular Biology. 20 (19): 7205–7213. doi:10.1128/MCB.20.19.7205-7213.2000. PMC 86274 . PMID 10982837.
Abdul KM, Terada K, Yano M, Ryan MT, Streimann I, Hoogenraad NJ, Mori M (October 2000). "Functional analysis of human metaxin in mitochondrial protein import in cultured cells and its relationship with the Tom complex". Biochemical and Biophysical Research Communications. 276 (3): 1028–1034. CiteSeerX 10.1.1.379.8183 . doi:10.1006/bbrc.2000.3589. PMID 11027586. {{cite journal}}: Cite uses deprecated parameter |citeseerx= (help)
Mukhopadhyay A, Avramova LV, Weiner H (April 2002). "Tom34 unlike Tom20 does not interact with the leader sequences of mitochondrial precursor proteins". Archives of Biochemistry and Biophysics. 400 (1): 97–104. doi:10.1006/abbi.2002.2777. PMID 11913975.
Yano M, Terada K, Mori M (October 2003). "AIP is a mitochondrial import mediator that binds to both import receptor Tom20 and preproteins". The Journal of Cell Biology. 163 (1): 45–56. doi:10.1083/jcb.200305051. PMC 2173431 . PMID 14557246.
Yano M, Terada K, Mori M (March 2004). "Mitochondrial import receptors Tom20 and Tom22 have chaperone-like activity". The Journal of Biological Chemistry. 279 (11): 10808–10813. doi:10.1074/jbc.M311710200 . PMID 14699115.
Humphries AD, Streimann IC, Stojanovski D, Johnston AJ, Yano M, Hoogenraad NJ, Ryan MT (March 2005). "Dissection of the mitochondrial import and assembly pathway for human Tom40". The Journal of Biological Chemistry. 280 (12): 11535–11543. doi:10.1074/jbc.M413816200 . PMID 15644312.
Stelzl U, Worm U, Lalowski M, Haenig C, Brembeck FH, Goehler H, etal. (September 2005). "A human protein-protein interaction network: a resource for annotating the proteome". Cell. 122 (6): 957–968. doi:10.1016/j.cell.2005年08月02日9. hdl:11858/00-001M-0000-0010-8592-0 . PMID 16169070. S2CID 8235923.

v t e PDB gallery
1om2: SOLUTION NMR STRUCTURE OF THE MITOCHONDRIAL PROTEIN IMPORT RECEPTOR TOM20 FROM RAT IN A COMPLEX WITH A PRESEQUENCE PEPTIDE DERIVED FROM RAT ALDEHYDE DEHYDROGENASE (ALDH) 1om2: SOLUTION NMR STRUCTURE OF THE MITOCHONDRIAL PROTEIN IMPORT RECEPTOR TOM20 FROM RAT IN A COMPLEX WITH A PRESEQUENCE PEPTIDE DERIVED FROM RAT ALDEHYDE DEHYDROGENASE (ALDH)

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TOMM20

Function

See also

References

Further reading