J 2022

The role of bivalent ions in the regulation of D-loop extension mediated by DMC1 during meiotic recombination

ALTMANNOVÁ, Veronika, Mário ŠPÍREK, Lucija ORLIC, Atis JEKABSONS, Tereza CLARENCE et. al.

Basic information

Original name

The role of bivalent ions in the regulation of D-loop extension mediated by DMC1 during meiotic recombination

Authors

ALTMANNOVÁ, Veronika (203 Czech Republic, belonging to the institution), Mário ŠPÍREK (703 Slovakia, belonging to the institution), Lucija ORLIC, Atis JEKABSONS (428 Latvia, belonging to the institution), Tereza CLARENCE, Adrian HENGGELER, Jarmila MLCOUSKOVA, Raphael A G CHALEIL, Joao MATOS and Lumír KREJČÍ (203 Czech Republic, guarantor, belonging to the institution)

Edition

iSCIENCE, CAMBRIDGE, CELL PRESS, 2022, 2589-0042

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10608 Biochemistry and molecular biology

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.800

RIV identification code

RIV/00216224:14110/22:00128839

Organization unit

Faculty of Medicine

UT WoS

000923030100007

Keywords in English

DMC1; meiotic recombination; D-loop extension; bivalent ions

Tags

International impact, Reviewed
Změněno: 10/3/2023 08:59, Mgr. Tereza Miškechová

Abstract

V originále

During meiosis, programmed DNA double-strand breaks (DSBs) are repaired by homologous recombination. DMC1, a conserved recombinase, plays a central role in this process. DMC1 promotes DNA strand exchange between homologous chromosomes, thus creating the physical linkage between them. Its function is regulated not only by several accessory proteins but also by bivalent ions. Here, we show that whereas calcium ions in the presence of ATP cause a conformational change within DMC1, stimulating its DNA binding and D-loop formation, they inhibit the extension of the invading strand within the D-loop. Based on structural studies, we have generated mutants of two highly conserved amino acids - E162 and D317 - in human DMC1, which are deficient in calcium regulation. In vivo studies of their yeast homologues further showed that they exhibit severe defects in meiosis, thus emphasizing the importance of calcium ions in the regulation of DMC1 function and meiotic recombination.

Links

EF16_025/0007381, research and development project
Name: Preklinická progrese nových organických sloučenin s cílenou biologickou aktivitou
GX21-22593X, research and development project
Name: Identifikace a charakterizace proteinů zahrnutých v metabolismu G-kvadruplexů a R-smyček a jejich vztah k replikaci DNA
LM2018127, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LM2018140, research and development project
Name: e-Infrastruktura CZ (Acronym: e-INFRA CZ)
Investor: Ministry of Education, Youth and Sports of the CR
MUNI/G/1594/2019, interní kód MU
Name: RecQ4 – a protein hub required for proper replication and recombination and its implications in Rothmund-Thomson Syndrome
Investor: Masaryk University, INTERDISCIPLINARY - Interdisciplinary research projects
206292/E/17/Z, interní kód MU
Name: Mechanics and execution of homologous recombination - biophysics to the organism
Investor: Wellcome Trust