Kinase Domain Is a Dynamic Hub for Driving LRRK2 Allostery.
GTPase
Walker motifs
allostery
hydrophobic cores
leucin rich repeat kinase 2 (LRRK2)
protein kinase (PK)
Journal
Frontiers in molecular neuroscience
ISSN: 1662-5099
Titre abrégé: Front Mol Neurosci
Pays: Switzerland
ID NLM: 101477914
Informations de publication
Date de publication:
2020
2020
Historique:
received:
24
03
2020
accepted:
02
09
2020
entrez:
30
10
2020
pubmed:
31
10
2020
medline:
31
10
2020
Statut:
epublish
Résumé
Protein kinases and GTPases are the two major molecular switches that regulate much of biology, and both of these domains are embedded within the large multi-domain Leucine-Rich Repeat Kinase 2 (LRRK2). Mutations in LRRK2 are the most common cause of familial Parkinson's disease (PD) and are also implicated in Crohn's disease. The recent Cryo-Electron Microscopy (Cryo-EM) structure of the four C-terminal domains [ROC COR KIN WD40 (RCKW)] of LRRK2 includes both of the catalytic domains. Although the important allosteric N-terminal domains are missing in the Cryo-EM structure this structure allows us to not only explore the conserved features of the kinase domain, which is trapped in an inactive and open conformation but also to observe the direct allosteric cross-talk between the two domains. To define the unique features of the kinase domain and to better understand the dynamic switch mechanism that allows LRRK2 to toggle between its inactive and active conformations, we have compared the LRRK2 kinase domain to Src, BRaf, and PKA. We also compare and contrast the two canonical glycine-rich loop motifs in LRRK2 that anchor the nucleotide: the G-Loop in protein kinases that anchors ATP and the P-Loop in GTPases that anchors GTP. The RCKW structure also provides a template for the cross-talk between the kinase and GTPase domains and brings new mechanistic insights into the physiological function of LRRK2 and how the kinase domain, along with key phosphorylation sites, can serve as an allosteric hub for mediating conformational changes.
Identifiants
pubmed: 33122997
doi: 10.3389/fnmol.2020.538219
pmc: PMC7573214
doi:
Types de publication
Journal Article
Langues
eng
Pagination
538219Informations de copyright
Copyright © 2020 Taylor, Kaila-Sharma, Weng, Aoto, Schmidt, Knapp, Mathea and Herberg.
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