Biology:TRIM33

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

E3 ubiquitin-protein ligase TRIM33, also known as (ectodermin homolog and tripartite motif-containing 33) is a protein encoded in the human by the gene TRIM33, a member of the tripartite motif family.[1] [2]

TRIM33 is thought to be a transcriptional corepressor. However unlike the related TRIM24 and TRIM28 proteins, few transcription factors such as SMAD4 that interact with TRIM33 have been identified.[3]

Structure

The protein is a member of the tripartite motif family.[4] This motif includes three zinc-binding domains:

  • RING
  • B-box type 1 zinc finger
  • B-box type 2 zinc finger

and a coiled-coil region.

Three alternatively spliced transcript variants for this gene have been described, however, the full-length nature of one variant has not been determined.[3]

Interactions

TRIM33 has been shown to interact with TRIM24.[5]

Role in cancer

TRIM33 acts as a tumor suppressor gene preventing the development chronic myelomonocytic leukemia.[6] TRIM33 regulates also the TRIM28 receptor and promotes physiological aging of hematopoietic stem cells. [7] TRIM33 acts as an oncogene by preventing apoptosis in B-cell leukemias.[8]

References

  1. "UniProt". https://www.uniprot.org/uniprotkb/Q9UPN9/entry#names_and_taxonomy. 
  2. "TIF1gamma, a novel member of the transcriptional intermediary factor 1 family". Oncogene 18 (5): 1209–17. February 1999. doi:10.1038/sj.onc.1202655. PMID 10022127. 
  3. 3.0 3.1 "Entrez Gene: TRIM33 tripartite motif-containing 33". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=51592. 
  4. "The tripartite motif family identifies cell compartments". The EMBO Journal 20 (9): 2140–51. May 2001. doi:10.1093/emboj/20.9.2140. PMID 11331580. 
  5. "Hetero-oligomerization among the TIF family of RBCC/TRIM domain-containing nuclear cofactors: a potential mechanism for regulating the switch between coactivation and corepression". Journal of Molecular Biology 320 (3): 629–44. July 2002. doi:10.1016/S0022-2836(02)00477-1. PMID 12096914. 
  6. "Transcription intermediary factor 1γ is a tumor suppressor in mouse and human chronic myelomonocytic leukemia". The Journal of Clinical Investigation 121 (6): 2361–70. June 2011. doi:10.1172/JCI45213. PMID 21537084. 
  7. "Tif1γ regulates the TGF-β1 receptor and promotes physiological aging of hematopoietic stem cells". Proceedings of the National Academy of Sciences of the United States of America 111 (29): 10592–7. July 2014. doi:10.1073/pnas.1405546111. PMID 25002492. Bibcode2014PNAS..11110592Q. 
  8. "The transcriptional cofactor TRIM33 prevents apoptosis in B lymphoblastic leukemia by deactivating a single enhancer". eLife 4: e06377. April 2015. doi:10.7554/eLife.06377. PMID 25919951. 

Further reading

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.