Roco proteins and the Parkinson’s disease-associated LRRK2

Jingling Liao, Quyen Hoang

Research output: Contribution to journalReview article

1 Citation (Scopus)

Abstract

Small G-proteins are structurally-conserved modules that function as molecular on-off switches. They function in many different cellular processes with differential specificity determined by the unique effector-binding surfaces, which undergo conformational changes during the switching action. These switches are typically standalone monomeric modules that form transient heterodimers with specific effector proteins in the ‘on’ state, and cycle to back to the monomeric conformation in the ‘off’ state. A new class of small G-proteins called “Roco” was discovered about a decade ago; this class is distinct from the typical G-proteins in several intriguing ways. Their switch module resides within a polypeptide chain of a large multi-domain protein, always adjacent to a unique domain called COR, and its effector kinase often resides within the same polypeptide. As such, the mechanisms of action of the Roco G-proteins are likely to differ from those of the typical G-proteins. Understanding these mechanisms is important because aberrant activity in the human Roco protein LRRK2 is associated with the pathogenesis of Parkinson’s disease. This review provides an update on the current state of our understanding of the Roco G-proteins and the prospects of targeting them for therapeutic purposes.

Original languageEnglish (US)
Article number4074
JournalInternational Journal of Molecular Sciences
Volume19
Issue number12
DOIs
StatePublished - Jan 1 2018

Fingerprint

Parkinson disease
GTP-Binding Proteins
proteins
Proteins
Monomeric GTP-Binding Proteins
Switches
effectors
Peptides
Protein Transport
switches
modules
Polypeptides
polypeptides
Parkinson Disease
Conformations
Phosphotransferases
Parkinson Disease Associated Proteins
pathogenesis

Keywords

  • Intramolecular mechanism
  • LRRK2
  • Roc
  • Small GTPase

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Roco proteins and the Parkinson’s disease-associated LRRK2. / Liao, Jingling; Hoang, Quyen.

In: International Journal of Molecular Sciences, Vol. 19, No. 12, 4074, 01.01.2018.

Research output: Contribution to journalReview article

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