Detailed Information on Publication Record
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 |
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GX21-22593X, research and development project |
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LM2018127, research and development project |
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LM2018140, research and development project |
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MUNI/G/1594/2019, interní kód MU |
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206292/E/17/Z, interní kód MU |
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