Methods for Assessing the Regulation of a Kinase by the Rab GTPase Ypt1

© 2021. The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature..

COPII coated vesicles that bud from the endoplasmic reticulum (ER) normally traffic to the Golgi. However, during starvation, COPII vesicles are redirected to the macroautophagy pathway where they become a membrane source for autophagosomes. Phosphorylation of the coat by the casein kinase 1 (CK1), Hrr25, is a prerequisite for vesicle uncoating and membrane fusion. CK1 family members were initially thought to be constitutively active kinases that are regulated through their subcellular localization. Recent studies, however, have shown that the Rab GTPase Ypt1 binds to and activates Hrr25 (CK1δ in mammals) to spatially regulate its kinase activity. Consistent with a direct role for Hrr25 in macroautophagy, hrr25and ypt1mutants are defective in autophagosome biogenesis. These studies have provided insights into how the itinerary of COPII vesicles is coordinated on two different trafficking pathways.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:2293

Enthalten in:

Methods in molecular biology (Clifton, N.J.) - 2293(2021) vom: 28., Seite 201-211

Sprache:

Englisch

Beteiligte Personen:

Wang, Juan [VerfasserIn]
Wang, Shensen [VerfasserIn]
Ferro-Novick, Susan [VerfasserIn]

Links:

Volltext

Themen:

Casein Kinase I
Casein kinase
EC 2.7.11.1
EC 3.6.1.-
EC 3.6.5.2
HRR25 protein, S cerevisiae
Hrr25
Journal Article
Rab GTP-Binding Proteins
Rab GTPase
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Saccharomyces cerevisiae Proteins
Vesicle traffic
Vesicular Transport Proteins
YPT1 protein, S cerevisiae
Ypt1

Anmerkungen:

Date Completed 13.01.2022

Date Revised 09.03.2022

published: Print

Citation Status MEDLINE

doi:

10.1007/978-1-0716-1346-7_14

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM329965387