J 2017

Function of heterochromatin protein 1 during DNA repair

BÁRTOVÁ, Eva; Barbora MALYŠKOVÁ; D KOMURKOVA; Soňa LEGARTOVÁ; Jana SUCHÁNKOVÁ et al.

Základní údaje

Originální název

Function of heterochromatin protein 1 during DNA repair

Vydání

Protoplasma, Wien, Springer-Verlag, 2017, 0033-183X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.457

Označené pro přenos do RIV

Ne

Klíčová slova anglicky

DNA repair; HP1 protein; DNA damage response

Příznaky

Mezinárodní význam
Změněno: 6. 6. 2017 11:07, Mgr. Jana Suchánková, Ph.D.

Anotace

V originále

This review focuses on the function of heterochromatin protein HP1 in response to DNA damage. We specifically outline the regulatory mechanisms in which HP1 and its interacting partners are involved. HP1 protein subtypes (HP1 alpha, HP1 beta, and HP1 gamma) are the main components of constitutive heterochromatin, and HP1 alpha and HP1 beta in particular are responsible for heterochromatin maintenance. The recruitment of these proteins to DNA lesions is also important from the perspective of proper DNA repair mechanisms. For example, HP1 alpha is necessary for the binding of the main DNA damage-related protein 53BP1 at DNA repair foci, which are positive not only for the HP1 alpha protein but also for the RAD51 protein, a component of DNA repair machinery. The HP1 beta protein also appears in monomeric form in DNA lesions together with the evolutionarily well-conserved protein called proliferating cell nuclear antigen (PCNA). The role of HP1 in DNA lesions is also mediated via the Kap1 transcription repressor. Taken together, these results indicate that the function of HP1 after DNA injury depends strongly on the kinetics of other DNA repair-related factors and their post-translational modifications, such as the phosphorylation of Kap-1.