Evidence map›Paper›PMID 27427966›Full record

ReviewSmall GTPases2016

Regulation of membrane traffic by Rab GEF and GAP cascades.

Peter Novick

Open access · bronzeAbstract readReview
In one paragraph

Review in Small GTPases, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
5.3field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

55 citing papers in PubMed, 89 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
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  5. Article
  6. Regulation of yeast polarized exocytosis by phosphoinositide lipids.Cellular and molecular life sciences : CMLS · 2024
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Peter Novicka Department of Cellular and Molecular Medicine , University of California San Diego , La Jolla , CA , USA.
University of California San Diego · US

Funding

GENETICS OF SECRETION IN YEASTR01GM035370 · NIGMS · YALE UNIVERSITY · PI PETER Jay NOVICK · 1985 to 2026
$7.0M
Coordination of membrane traffic through rab GEF and GAP cascadesR01GM082861 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI NOVICK, PETER JAY · 2008 to 2020
$4.4M
NIGMS NIH HHS R01 GM035370NIGMS NIH HHS R01 GM082861
6 · The paper itself

Abstract

ASBTRACT Rab GTPases serve as master regulators of membrane traffic, each typically controlling several different aspects of a specific stage of membrane traffic by recruiting diverse effector proteins such as cytoskeletal motors, vesicle tethering proteins and regulators of SNARE complex assembly. Rabs, in turn, are regulated by specific guanine nucleotide exchange factors (GEFs), which catalyze the displacement of GDP and binding of GTP, as well as GTPase activating proteins (GAPs) that stimulate the slow intrinsic rate of GTP hydrolysis. Here I review our studies on the final stages of the yeast secretory pathway that have led us to propose that adjacent Rabs on a pathway are networked to one another through their regulators; specifically we have shown that the Rab, Ypt32, in its GTP-bound form recruits both Sec2, the GEF that activates the downstream Rab, Sec4, as well as Gyp1, the GAP that inactivates the upstream Rab, Ypt1. The postulated effect of these counter-current cascades is a programmed series of abrupt Rab transitions that lead to critical changes in the functional identity of the membrane as it flows along the exocytic pathway. Phosphoinositides also play key roles in the temporal and spatial regulation of membrane traffic. The Golgi pool of phosphatidylinositol 4-phosphate (PI(4)P) works in concert with Ypt32 to initially recruit Sec2, yet a subsequent drop in PI(4)P levels directs a regulatory switch in Sec2 function in which it binds to the Sec4 effector Sec15 generating a positive feedback loop. PI(4)P distribution together with Sec2 phosphorylation by a casein kinase determines when and where each regulatory circuit is used.

Indexed as

Cell MembraneGTPase-Activating ProteinsGuanine Nucleotide Exchange FactorsPhosphatidylinositolsPhosphorylationrab GTP-Binding ProteinsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsGTPase-Activating ProteinsGuanine Nucleotide Exchange FactorsPhosphatidylinositolsrab GTP-Binding ProteinsSaccharomyces cerevisiae Proteinsexchange factorGAP cascadeGEF cascadeGTPase activating proteinmembrane trafficRab

Identifiers

PMID27427966
PMCPMC5129893
OpenAlexW2500755599

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.