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Secuencia PEST

De Wikipedia, la enciclopedia libre

Una secuencia PEST es una secuencia peptídica rica en residuos de prolina (P), ácido glutámico (E), serina (S), y treonina (T). Dicha secuencia se asocia con proteínas que tienen una vida media celular corta; de ahí que se hipotetice que la secuencia PEST actúa como péptido señal para degradación proteolítica.[1]

Dicha degradación puede estar mediada, posiblemente, por el proteasoma[2][3]​ o por calpaína.[4]

Referencias

  1. Rogers S, Wells R, Rechsteiner M (1986). «Amino acid sequences common to rapidly degraded proteins: the PEST hypothesis». Science 234 (4774): 364-8. PMID 2876518. doi:10.1126/science.2876518. 
  2. Reverte CG, Ahearn MD, Hake LE (2001). «CPEB degradation during Xenopus oocyte maturation requires a PEST domain and the 26S proteasome». Dev. Biol. 231 (2): 447-58. PMID 11237472. doi:10.1006/dbio.2001.0153. 
  3. Spencer ML, Theodosiou M, Noonan DJ (2004). «NPDC-1, a novel regulator of neuronal proliferation, is degraded by the ubiquitin/proteasome system through a PEST degradation motif». J. Biol. Chem. 279 (35): 37069-78. PMID 15229225. doi:10.1074/jbc.M402507200. 
  4. Shumway SD, Maki M, Miyamoto S (1999). «The PEST domain of IkappaBalpha is necessary and sufficient for in vitro degradation by mu-calpain». Journal of Biological Chemistry 274 (43): 30874-81. PMID 10521480. doi:10.1074/jbc.274.43.30874. 
Esta página se editó por última vez el 22 oct 2019 a las 23:42.
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