Biology:Major vault protein

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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

Major vault protein (MVP), also known as lung resistance-related protein (LRP) is a protein that in humans is encoded by the MVP gene.[1][2] 78 copies of the protein assemble into the large compartments called vaults.

Function

This gene encodes the major vault protein which is a lung infection resistance-related protein. Vaults are multi-subunit structures that may be involved in nucleo-cytoplasmic transport. This protein mediates drug resistance, perhaps via a transport process. It is widely distributed in normal tissues, and overexpressed in multidrug-resistant cancer cells. The protein overexpression is a potentially useful marker of clinical drug resistance. This gene produces two transcripts by using two alternative exon 2 sequences; however, the open reading frames are the same in both transcripts.[2]

Major vault protein coimmunoprecipitates with the human estrogen receptor and treatment with estradiol increases MVP associated with the estrogen receptor in nuclear extracts.[3]

Interactions

Major vault protein has been shown to interact with Estrogen receptor alpha,[4] PTEN[5] and PARP4.[6][7]

References

  1. "The drug resistance-related protein LRP is the human major vault protein". Nature Medicine 1 (6): 578–82. Jun 1995. doi:10.1038/nm0695-578. PMID 7585126. https://pure.knaw.nl/portal/en/publications/the-drugresistancerelated-protein-lrp-is-the-human-major-vault-protein(c49e6086-ede3-4b91-ac6e-4ab9158c6cac).html. 
  2. 2.0 2.1 "Entrez Gene: MVP major vault protein". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=9961. 
  3. Kong, Lawrence B; Siva, Amara C; Rome, Leonard H; Stewart, Phoebe L (April 1999). "Structure of the vault, a ubiquitous celular component". Structure 7 (4): 371–379. doi:10.1016/s0969-2126(99)80050-1. ISSN 0969-2126. http://dx.doi.org/10.1016/s0969-2126(99)80050-1. 
  4. "Interaction of vault particles with estrogen receptor in the MCF-7 breast cancer cell". The Journal of Cell Biology 141 (6): 1301–10. Jun 1998. doi:10.1083/jcb.141.6.1301. PMID 9628887. 
  5. "PTEN associates with the vault particles in HeLa cells". The Journal of Biological Chemistry 277 (43): 40247–52. Oct 2002. doi:10.1074/jbc.M207608200. PMID 12177006. https://www.openaccessrepository.it/record/94755/files/fulltext.pdf. 
  6. "Structural domains of vault proteins: a role for the coiled coil domain in vault assembly". Biochemical and Biophysical Research Communications 291 (3): 535–41. Mar 2002. doi:10.1006/bbrc.2002.6472. PMID 11855821. 
  7. "The 193-kD vault protein, VPARP, is a novel poly(ADP-ribose) polymerase". The Journal of Cell Biology 146 (5): 917–28. Sep 1999. doi:10.1083/jcb.146.5.917. PMID 10477748. 

Further reading