FBXO32

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An Error has occurred retrieving Wikidata item for infobox F-box only protein 32, also known as "MAFbx", for "Muscle Atrophy F-box gene", and "Atrogin-1," is a protein that in humans is encoded by the FBXO32 gene.[1][2][3]

Function

This gene encodes a member of the F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of the ubiquitin protein ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into 3 classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbxs class and contains an F-box domain. This protein is highly expressed during muscle atrophy, whereas mice deficient in this gene were found to be resistant to atrophy. This protein is thus a potential drug target for the treatment of muscle atrophy. Alternative splicing of this gene results in two transcript variants encoding two isoforms of different sizes.[3]

Interactions

FBXO32 has been shown to interact with EIF3A.[4]

Cancer

FBXO32 gene has been observed progressively downregulated in Human papillomavirus-positive neoplastic keratinocytes derived from uterine cervical preneoplastic lesions at different levels of malignancy.[5] For this reason, FBXO32 is likely to be associated with tumorigenesis and may be a potential prognostic marker for uterine cervical preneoplastic lesions progression.[5]

References

  1. Bodine SC, Latres E, Baumhueter S, Lai VK, Nunez L, Clarke BA, Poueymirou WT, Panaro FJ, Na E, Dharmarajan K, Pan ZQ, Valenzuela DM, DeChiara TM, Stitt TN, Yancopoulos GD, Glass DJ (Nov 2001). "Identification of ubiquitin ligases required for skeletal muscle atrophy". Science. 294 (5547): 1704–8. Bibcode:2001Sci...294.1704B. doi:10.1126/science.1065874. PMID 11679633. S2CID 37349291.
  2. Gomes MD, Lecker SH, Jagoe RT, Navon A, Goldberg AL (Dec 2001). "Atrogin-1, a muscle-specific F-box protein highly expressed during muscle atrophy". Proc. Natl. Acad. Sci. U.S.A. 98 (25): 14440–5. Bibcode:2001PNAS...9814440G. doi:10.1073/pnas.251541198. PMC 64700. PMID 11717410.
  3. 3.0 3.1 "Entrez Gene: FBXO32 F-box protein 32".
  4. Lagirand-Cantaloube J, Offner N, Csibi A, Leibovitch MP, Batonnet-Pichon S, Tintignac LA, Segura CT, Leibovitch SA (Apr 2008). "The initiation factor eIF3-f is a major target for atrogin1/MAFbx function in skeletal muscle atrophy". EMBO J. 27 (8): 1266–76. doi:10.1038/emboj.2008.52. PMC 2367397. PMID 18354498.
  5. 5.0 5.1 Rotondo JC, Bosi S, Bassi C, Ferracin M, Lanza G, Gafà R, Magri E, Selvatici R, Torresani S, Marci R, Garutti P, Negrini M, Tognon M, Martini F (April 2015). "Gene expression changes in progression of cervical neoplasia revealed by microarray analysis of cervical neoplastic keratinocytes". J Cell Physiol. 230 (4): 802–812. doi:10.1002/jcp.24808. hdl:11392/2066612. PMID 25205602. S2CID 24986454.

Further reading