Regulation of Phosphoribosyl-Linked Serine Ubiquitination by Deubiquitinases DupA and DupB.
A549 Cells
Bacterial Proteins
/ metabolism
Catalytic Domain
/ physiology
Cell Line
Cell Line, Tumor
Deubiquitinating Enzymes
/ metabolism
Endoplasmic Reticulum
/ metabolism
HEK293 Cells
HeLa Cells
Host-Pathogen Interactions
/ physiology
Humans
Legionella pneumophila
/ pathogenicity
Legionnaires' Disease
/ metabolism
Serine
/ metabolism
Ubiquitin
/ metabolism
Ubiquitination
/ physiology
Vacuoles
/ metabolism
ADP-ribosylation
ER-fragmentation
Legionella pneumophila
SdeA
deubiquitinase
deubiquitination
endoplasmic reticulum
phosphodiesterase
phosphoribosyl serine ubiquitination
Journal
Molecular cell
ISSN: 1097-4164
Titre abrégé: Mol Cell
Pays: United States
ID NLM: 9802571
Informations de publication
Date de publication:
02 01 2020
02 01 2020
Historique:
received:
06
06
2019
revised:
07
09
2019
accepted:
11
10
2019
pubmed:
17
11
2019
medline:
28
3
2020
entrez:
17
11
2019
Statut:
ppublish
Résumé
The family of bacterial SidE enzymes catalyzes non-canonical phosphoribosyl-linked (PR) serine ubiquitination and promotes infectivity of Legionella pneumophila. Here, we describe identification of two bacterial effectors that reverse PR ubiquitination and are thus named deubiquitinases for PR ubiquitination (DUPs; DupA and DupB). Structural analyses revealed that DupA and SidE ubiquitin ligases harbor a highly homologous catalytic phosphodiesterase (PDE) domain. However, unlike SidE ubiquitin ligases, DupA displays increased affinity to PR-ubiquitinated substrates, which allows DupA to cleave PR ubiquitin from substrates. Interfering with DupA-ubiquitin binding switches its activity toward SidE-type ligase. Given the high affinity of DupA to PR-ubiquitinated substrates, we exploited a catalytically inactive DupA mutant to trap and identify more than 180 PR-ubiquitinated host proteins in Legionella-infected cells. Proteins involved in endoplasmic reticulum (ER) fragmentation and membrane recruitment to Legionella-containing vacuoles (LCV) emerged as major SidE targets. The global map of PR-ubiquitinated substrates provides critical insights into host-pathogen interactions during Legionella infection.
Identifiants
pubmed: 31732457
pii: S1097-2765(19)30797-X
doi: 10.1016/j.molcel.2019.10.019
pmc: PMC6941232
pii:
doi:
Substances chimiques
Bacterial Proteins
0
Ubiquitin
0
Serine
452VLY9402
Deubiquitinating Enzymes
EC 3.4.19.12
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
164-179.e6Subventions
Organisme : European Research Council
ID : 742720
Pays : International
Organisme : NIAID NIH HHS
ID : R01 AI127465
Pays : United States
Informations de copyright
Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.
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