TOMM20

Protein-coding gene in the species Homo sapiens

TOMM20

| Available structures

PDB| Ortholog search: PDBe RCSB
| List of PDB id codes

4APO

Identifiers
Aliases| TOMM20, MAS20, MOM19, TOM20, translocase of outer mitochondrial membrane 20
External IDs| OMIM: 601848 MGI: 1915202 HomoloGene: 44649 GeneCards: TOMM20
| Gene location (Human)

Chr.| Chromosome 1 (human)[1]

Band| 1q42.3| Start| 235,109,341 bp[1]
End| 235,128,837 bp[1]
| Gene location (Mouse)

Chr.| Chromosome 8 (mouse)[2]

Band| 8|8 E2| Start| 127,657,417 bp[2]
End| 127,672,594 bp[2]
| RNA expression pattern

Bgee| | Human| Mouse (ortholog)

|

| Top expressed in

* parotid gland

* Brodmann area 10

* frontal pole

* middle frontal gyrus

* caput epididymis

* corpus epididymis

* pons

* orbitofrontal cortex

* middle temporal gyrus

* external globus pallidus

| Top expressed in

* yolk sac

* olfactory tubercle

* nucleus accumbens

* superior frontal gyrus

* subiculum

* ventromedial nucleus

* temporal lobe

* paraventricular nucleus of hypothalamus

* lateral hypothalamus

* superior colliculus

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 endoplasmic reticulum membrane
* 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

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 that in humans is encoded by the TOMM20 gene.[5][6][7][8] TOM20 is one of the receptor systems of the TOM complex (translocase of the outer membrane) in the outer mitochondrial membrane (OMM).

## 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.[9]

## See also[edit]

* Mitochondria Outer Membrane Translocase
* TOMM22
* TOMM40
* TOMM70A

## References[edit]

1. ^ a b c GRCh38: Ensembl release 89: ENSG00000173726 \- Ensembl, May 2017
2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000093904 \- 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. ^ Seki N, Moczko M, Nagase T, Zufall N, Ehmann B, Dietmeier K, et al. (November 1995). "A human homolog of the mitochondrial protein import receptor Mom19 can assemble with the yeast mitochondrial receptor complex". FEBS Letters. 375 (3): 307–310. doi:10.1016/0014-5793(95)01229-8. PMID 7498524. S2CID 45148104.
6. ^ Goping IS, Millar DG, Shore GC (October 1995). "Identification of the human mitochondrial protein import receptor, huMas20p. Complementation of delta mas20 in yeast". FEBS Letters. 373 (1): 45–50. doi:10.1016/0014-5793(95)01010-C. PMID 7589431. S2CID 1204415.
7. ^ 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.2004.12.057. PMID 15733919.
8. ^ "Entrez Gene: TOMM20 translocase of outer mitochondrial membrane 20 homolog (yeast)".
9. ^ 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.

## Further reading[edit]

* Nomura N, Miyajima N, Sazuka T, Tanaka A, Kawarabayasi Y, Sato S, et al. (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, et al. (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, et al. (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.
* 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, et al. (September 2005). "A human protein-protein interaction network: a resource for annotating the proteome". Cell. 122 (6): 957–968. doi:10.1016/j.cell.2005.08.029. hdl:11858/00-001M-0000-0010-8592-0. PMID 16169070. S2CID 8235923.

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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)

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