J 2022

Structural and functional basis of mammalian microRNA biogenesis by Dicer

ZAPLETAL, David, Eliska TABORSKA, Josef PASULKA, Radek MALIK, Karel KUBÍČEK et. al.

Basic information

Original name

Structural and functional basis of mammalian microRNA biogenesis by Dicer

Authors

ZAPLETAL, David (203 Czech Republic, belonging to the institution), Eliska TABORSKA, Josef PASULKA, Radek MALIK, Karel KUBÍČEK (203 Czech Republic, belonging to the institution), Martina ZÁNOVÁ (703 Slovakia, belonging to the institution), Christian MUCH, Marek ŠEBESTA (703 Slovakia, belonging to the institution), Valeria BUCCHERI, Filip HORVAT, Irena JENICKOVA, Michaela PROCHAZKOVA, Jan PROCHAZKA, Matyáš PINKAS (203 Czech Republic, belonging to the institution), Jiří NOVÁČEK (203 Czech Republic, belonging to the institution), Diego F JOSEPH, Radislav SEDLACEK, Carrie BERNECKY, Donal CARROLL, Richard ŠTEFL (203 Czech Republic, guarantor, belonging to the institution) and Petr SVOBODA

Edition

Molecular Cell, CAMBRIDGE, CELL PRESS, 2022, 1097-2765

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: 16.000

RIV identification code

RIV/00216224:14740/22:00128561

Organization unit

Central European Institute of Technology

UT WoS

000898565300011

Keywords in English

CRYO-EM STRUCTUREGUIDE STRAND SELECTIONRNA-BINDINGSTRUCTURE VALIDATIONTRBP COMPLEXMOUSEEXPRESSIONMOLPROBITYSPECIFICITYRECOGNITION
Změněno: 26/2/2023 20:32, Mgr. Pavla Foltynová, Ph.D.

Abstract

V originále

MicroRNA (miRNA) and RNA interference (RNAi) pathways rely on small RNAs produced by Dicer endonucle-ases. Mammalian Dicer primarily supports the essential gene-regulating miRNA pathway, but how it is spe-cifically adapted to miRNA biogenesis is unknown. We show that the adaptation entails a unique structural role of Dicer???s DExD/H helicase domain. Although mice tolerate loss of its putative ATPase function, the com-plete absence of the domain is lethal because it assures high-fidelity miRNA biogenesis. Structures of murine Dicerd???miRNA precursor complexes revealed that the DExD/H domain has a helicase-unrelated structural function. It locks Dicer in a closed state, which facilitates miRNA precursor selection. Transition to a cleav-age-competent open state is stimulated by Dicer-binding protein TARBP2. Absence of the DExD/H domain or its mutations unlocks the closed state, reduces substrate selectivity, and activates RNAi. Thus, the DExD/H domain structurally contributes to mammalian miRNA biogenesis and underlies mechanistical partitioning of miRNA and RNAi pathways.

Links

EF19_073/0016943, research and development project
Name: Interní grantová agentura Masarykovy univerzity
GA22-19896S, research and development project
Name: Strukturní podstata pro opětovné sestavení nukleosomu při přepisu genu zprostředkovaná proteinem Spt6
Investor: Czech Science Foundation, Structural basis for co-transcriptional nucleosome reassembly mediated by Spt6
LM2018127, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LM2018131, research and development project
Name: Česká národní infrastruktura pro biologická data (Acronym: ELIXIR-CZ)
Investor: Ministry of Education, Youth and Sports of the CR, Czech National Infrastructure for Biological Data
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR
649030, interní kód MU
Name: DECOR - Dynamic assembly and exchange of RNA polymerase II CTD factors (Acronym: DECOR)
Investor: European Union, DECOR, ERC (Excellent Science)