TFB1M

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Transcription factor B1, mitochondrial
Identifiers
SymbolsTFB1M; CGI75; mtTFB; mtTFB1
External IDsOMIM: 607033 MGI: 2146851 HomoloGene: 9343 GeneCards: TFB1M Gene
EC number2.1.1.-
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez51106224481
EnsemblENSG00000029639ENSMUSG00000036983
UniProtQ8WVM0Q8JZM0
RefSeq (mRNA)NM_016020NM_146074
RefSeq (protein)NP_057104NP_666186
Location (UCSC)Chr 6:
155.58 – 155.64 Mb
Chr 17:
3.52 – 3.56 Mb
PubMed search

Dimethyladenosine transferase 1, mitochondrial; Transcription factor B1, mitochondrial is a mitochondrial enzyme that in humans is encoded by the TFB1M gene.[1][2][3] TFB1M is a mitochondrial methyltransferase, which uses S-adenosyl methionine to dimethylate two highly conserved adenosine residues at the 3'-end of the mitochondrial 12S rRNA thereby regulating the assembly or stability of the small subunit of the mitochondrial ribosome.[2][4][5]

Additionally, TFB1M has been demonstrated to stimulate transcription from promoter templates in an in vitro system containing recombinant mitochondrial RNA polymerase and TFAM.[6] There are no experimental data demonstrating that this function occurs in vivo.

Interactions

TFB1M has been shown to interact with TFAM.[7]

References

  1. Lai CH, Chou CY, Ch'ang LY, Liu CS, Lin W (Aug 2000). "Identification of novel human genes evolutionarily conserved in Caenorhabditis elegans by comparative proteomics". Genome Res 10 (5): 703–13. doi:10.1101/gr.10.5.703. PMC 310876. PMID 10810093. 
  2. 2.0 2.1 McCulloch V, Seidel-Rogol BL, Shadel GS (Jan 2002). "A human mitochondrial transcription factor is related to RNA adenine methyltransferases and binds S-adenosylmethionine". Mol Cell Biol 22 (4): 1116–25. doi:10.1128/MCB.22.4.1116-1125.2002. PMC 134642. PMID 11809803. 
  3. "Entrez Gene: TFB1M transcription factor B1, mitochondrial". 
  4. Falkenberg M, Gaspari M, Rantanen A, et al. (2002). "Mitochondrial transcription factors B1 and B2 activate transcription of human mtDNA.". Nat. Genet. 31 (3): 289–94. doi:10.1038/ng909. PMID 12068295. 
  5. Metodiev MD, Lesko N, Park CB, Camara Y., Shi Y., Wibom R., Hultenby K., Gustafsson CM, Larsson NG. (Apr 2009). "Methylation of 12S rRNA is necessary for in vivo stability of the small subunit of the mammalian mitochondrial ribosome". Cell Metab. 9 (4): 386–97. doi:10.1016/j.cmet.2009.03.001. PMID 19356719. 
  6. Falkenberg M, Gaspari M, Rantanen A, et al. (2002). "Mitochondrial transcription factors B1 and B2 activate transcription of human mtDNA.". Nat. Genet. 31 (3): 289–94. doi:10.1038/ng909. PMID 12068295. 
  7. McCulloch, Vicki; Shadel Gerald S (Aug 2003). "Human mitochondrial transcription factor B1 interacts with the C-terminal activation region of h-mtTFA and stimulates transcription independently of its RNA methyltransferase activity". Mol. Cell. Biol. (United States) 23 (16): 5816–24. doi:10.1128/MCB.23.16.5816-5824.2003. ISSN 0270-7306. PMC 166325. PMID 12897151. 

Further reading


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