Evidence map›Paper›PMID 22902756›Full record

ArticleCurrent biology : CB2012

Distinct and overlapping roles for AP-1 and GGAs revealed by the "knocksideways" system.

Jennifer Hirst, Georg H H Borner, Robin Antrobus, Andrew A Peden, Nicola A Hodson, Daniela A Sahlender, Margaret S Robinson

Open access · hybridAbstract read
In one paragraph

Article in Current biology : CB, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

97 citing papers in PubMed, 161 citations in OpenAlex.

  1. Article
  2. Balancing cellular copper levels via the post-translational regulation of copper transport.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Review
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  16. Article
  17. IST1 regulates select recycling pathways.Traffic (Copenhagen, Denmark) · 2024
    Article
  18. Review
  19. Article
  20. Protein sorting from endosomes to the TGN.Frontiers in cell and developmental biology · 2023
    Review

37 more citing papers are in PubMed but not listed here.

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

7 authors at 1 institution in 1 country.

Jennifer HirstUniversity of Cambridge, Cambridge Institute for Medical Research, Cambridge CB2 0XY, UK. jh228@cam.ac.uk
Georg H H Borner
Robin Antrobus
Andrew A Peden
Nicola A Hodson
Daniela A Sahlender
Margaret S Robinson
University of Cambridge · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

Although adaptor protein complex 1 (AP-1) and Golgi-localized, γ ear-containing, ADP-ribosylation factor-binding proteins (GGAs) are both adaptors for clathrin-mediated intracellular trafficking, the pathways they mediate and their relationship to each other remain open questions. To tease apart the functions of AP-1 and GGAs, we rapidly inactivated each adaptor using the "knocksideways" system and then compared the protein composition of clathrin-coated vesicle (CCV) fractions from control and knocksideways cells. The AP-1 knocksideways resulted in a dramatic and unexpected loss of GGA2 from CCVs. Over 30 other peripheral membrane proteins and over 30 transmembrane proteins were also depleted, including several mutated in genetic disorders, indicating that AP-1 acts as a linchpin for intracellular CCV formation. In contrast, the GGA2 knocksideways affected only lysosomal hydrolases and their receptors. We propose that there are at least two populations of intracellular CCVs: one containing both GGAs and AP-1 for anterograde trafficking and another containing AP-1 for retrograde trafficking. Our study shows that knocksideways and proteomics are a powerful combination for investigating protein function, which can potentially be used on many different types of proteins.

Indexed as

Adaptor Protein Complex 1Adaptor Proteins, Vesicular TransportCell Line, TumorClathrinClathrin-Coated VesiclesHeLa CellsHumansProtein BindingRNA InterferenceRNA, Small InterferingR-SNARE ProteinsSNARE ProteinsVesicular Transport ProteinsAdaptor Protein Complex 1Adaptor Proteins, Vesicular TransportClathrinGGA adaptor proteinsRABEP1 protein, humanRNA, Small InterferingR-SNARE ProteinsSNARE ProteinsVAMP4 protein, humanVesicular Transport Proteins

Identifiers

PMID22902756
PMCPMC3485558
OpenAlexW2154083208

What OpenQuestion holds

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LicenceCC BY
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.