J 2023

Evolutionarily conserved cysteines in plant cytosolic seryl-tRNA synthetase are important for its resistance to oxidation

EVIC, Valentina, Ruzica SOIC, Marko MOCIBOB, Mario KEKEZ, Josef HOUSER et. al.

Basic information

Original name

Evolutionarily conserved cysteines in plant cytosolic seryl-tRNA synthetase are important for its resistance to oxidation

Authors

EVIC, Valentina, Ruzica SOIC, Marko MOCIBOB, Mario KEKEZ, Josef HOUSER (203 Czech Republic, belonging to the institution), Michaela WIMMEROVÁ (203 Czech Republic, belonging to the institution), Dubravka MATKOVIĆ-ČALOGOVIĆ, Ita GRUIC-SOVULJ, Ivana KEKEZ and Jasmina ROKOV-PLAVEC (guarantor)

Edition

FEBS Letters, Amsterdam, Elsevier Science, 2023, 0014-5793

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10608 Biochemistry and molecular biology

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.500 in 2022

RIV identification code

RIV/00216224:14740/23:00133310

Organization unit

Central European Institute of Technology

UT WoS

001083471700001

Keywords in English

aminoacyl-tRNA synthetase; cysteine reactivity; disulfide bond; hydrogen peroxide; oxidative stress; thermal stability

Tags

Tags

International impact, Reviewed
Změněno: 27/10/2024 15:26, Ing. Martina Blahová

Abstract

V originále

We have previously identified a unique disulfide bond in the crystal structure of Arabidopsis cytosolic seryl-tRNA synthetase involving cysteines evolutionarily conserved in all green plants. Here, we discovered that both cysteines are important for protein stability, but with opposite effects, and that their microenvironment may promote disulfide bond formation in oxidizing conditions. The crystal structure of the C244S mutant exhibited higher rigidity and an extensive network of noncovalent interactions correlating with its higher thermal stability. The activity of the wild-type showed resistance to oxidation with H2O2, while the activities of cysteine-to-serine mutants were impaired, indicating that the disulfide link may enable the protein to function under oxidative stress conditions which can be beneficial for an efficient plant stress response.

Links

EF18_046/0015974, research and development project
Name: Modernizace České infrastruktury pro integrativní strukturní biologii
90242, large research infrastructures
Name: CIISB III