Evidence map›Paper›PMID 25526805›Full record

ArticleJournal of molecular biology2015

Uncovering the role of Sgf73 in maintaining SAGA deubiquitinating module structure and activity.

Ming Yan, Cynthia Wolberger

Abstract read
In one paragraph

Article in Journal of molecular biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

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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

2 authors.

Ming YanDepartment of Biophysics and Biophysical Chemistry, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
Cynthia WolbergerDepartment of Biophysics and Biophysical Chemistry, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA. Electronic address: cwolberg@jhmi.edu.

Funding

Structure and Function of the SAGA Deubiquitinating ModuleR01GM095822 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI WOLBERGER, CYNTHIA · 2011 to 2018
$2.7M
Howard Hughes Medical InstituteNCI NIH HHS Y1-CO-1020NIGMS NIH HHS GM-095822NIGMS NIH HHS R01 GM095822NIGMS NIH HHS Y1-GM-1104
6 · The paper itself

Abstract

The SAGA (Spt-Ada-Gcn5 acetyltransferase) complex performs multiple functions in transcription activation including deubiquitinating histone H2B, which is mediated by a subcomplex called the deubiquitinating module (DUBm). The yeast DUBm comprises a catalytic subunit, Ubp8, and three additional subunits, Sgf11, Sus1 and Sgf73, all of which are required for DUBm activity. A portion of the non-globular Sgf73 subunit lies between the Ubp8 catalytic domain and the ZnF-UBP domain and has been proposed to contribute to deubiquitinating activity by maintaining the catalytic domain in an active conformation. We report structural and solution studies of the DUBm containing two different Sgf73 point mutations that disrupt deubiquitinating activity. We find that the Sgf73 mutations abrogate deubiquitinating activity by impacting the Ubp8 ubiquitin-binding fingers region and they have an unexpected effect on the overall folding and stability of the DUBm complex. Taken together, our data suggest a role for Sgf73 in maintaining both the organization and the ubiquitin-binding conformation of Ubp8, thereby contributing to overall DUBm activity.

Indexed as

Crystallography, X-RayEndopeptidasesHistone AcetyltransferasesModels, MolecularMutationProtein BindingProtein ConformationSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsTrans-ActivatorsUbiquitinUbiquitinationEndopeptidasesHistone AcetyltransferasesSaccharomyces cerevisiae ProteinsSAGA complex, S cerevisiaeSgf73 protein, S cerevisiaeTrans-ActivatorsUbiquitinUBP8 protein, S cerevisiaedeubiquitinating enzymeSAGASgf73transcription activationUbp8

Identifiers

PMID25526805
PMCPMC4380536

What OpenQuestion holds

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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.