Biology:MAPRE1

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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

Microtubule-associated protein RP/EB family member 1 is a protein that in humans is encoded by the MAPRE1 gene.[1][2][3][4]

Function

The protein encoded by this gene was first identified by its binding to the APC (Adenomatous polyposis coli) protein which is often mutated in familial and sporadic forms of colorectal cancer.[5]

Immunofluorescence has demonstrated that EB1 localizes to the centrosome, mitotic spindle, and distal tips of cytoplasmic microtubules. Throughout the cell cycle, EB1 proteins situate on the microtubule plus ends, which is why EB1 is categorized as a microtubule plus end tracking protein(+TIP protein).[6]

The protein also associates with components of the dynactin complex and the intermediate chain of cytoplasmic dynein. Because of these associations, it is thought that this protein is involved in the regulation of microtubule structures and chromosome stability. This gene is a member of the RP/EB family.[4]

Interactions

MAPRE1 has been shown to interact with TERF1.[7]

References

  1. "APC binds to the novel protein EB1". Cancer Res. 55 (14): 2972–7. Aug 1995. PMID 7606712. 
  2. "The adenomatous polyposis coli-binding protein EB1 is associated with cytoplasmic and spindle microtubules". Proc. Natl. Acad. Sci. USA 95 (18): 10596–601. Sep 1998. doi:10.1073/pnas.95.18.10596. PMID 9724749. Bibcode1998PNAS...9510596B. 
  3. "Critical role for the EB1 and APC interaction in the regulation of microtubule polymerization". Curr. Biol. 11 (13): 1062–7. Jul 2001. doi:10.1016/S0960-9822(01)00297-4. PMID 11470413. 
  4. 4.0 4.1 "Entrez Gene: MAPRE1 microtubule-associated protein, RP/EB family, member 1". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=22919. 
  5. "APC binds to the novel protein EB1". Cancer Research 55 (14): 2972–7. July 1995. PMID 7606712. http://cancerres.aacrjournals.org/content/55/14/2972. 
  6. "EB1 proteins regulate microtubule dynamics, cell polarity, and chromosome stability". The Journal of Cell Biology 149 (4): 761–6. May 2000. doi:10.1083/jcb.149.4.761. PMID 10811817. 
  7. "Involvement of the telomeric protein Pin2/TRF1 in the regulation of the mitotic spindle". FEBS Lett. 514 (2–3): 193–8. Mar 2002. doi:10.1016/S0014-5793(02)02363-3. PMID 11943150. 

Further reading