Evidence map›Paper›PMID 24577581›Full record

ArticleMolecular bioSystems2014

A combination of metabolic labeling and 2D-DIGE analysis in response to a farnesyltransferase inhibitor facilitates the discovery of new prenylated proteins.

Charuta C Palsuledesai, Joshua D Ochocki, Todd W Markowski, Mark D Distefano

Abstract read
In one paragraph

Article in Molecular bioSystems, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 34 citations in OpenAlex.

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  15. a-Factor: a chemical biology tool for the study of protein prenylation.Current topics in peptide & protein research · 2017
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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

4 authors at 2 institutions in 3 countries.

Charuta C PalsuledesaiDepartment of Chemistry, University of Minnesota, USA. diste001@umn.edu.
Joshua D Ochocki
Todd W Markowski
Mark D Distefano
University of Minnesota System · USProtéomique, Réponse Inflammatoire et Spectrométrie de Masse · FR

Funding

MECHANISM AND FUNCTION OF PROTEIN PRENYLATIONR01GM058842 · NIGMS · UNIVERSITY OF MINNESOTA TWIN CITIES · PI DISTEFANO, MARK D · 1998 to 2010
$2.6M
Enzymatic Protein LabelingR01GM084152 · NIGMS · UNIVERSITY OF MINNESOTA · PI DISTEFANO, MARK D · 2010 to 2019
$2.6M
NIGMS NIH HHS GM058842NIGMS NIH HHS GM084152NIGMS NIH HHS R01 GM058842NIGMS NIH HHS R01 GM084152
6 · The paper itself

Abstract

Protein prenylation is a post-translational modification required for proper cellular localization and activity of many important eukaryotic proteins. Farnesyltransferase inhibitors (FTIs) have been explored extensively for their antitumor activity. To assist in identifying potentially new and more useful markers for therapeutic applications, we developed a strategy that uses a combination of metabolic labeling and 2D DIGE (differential gel electrophoresis) to discover new prenylated proteins whose cellular levels are influenced by FTIs. In this approach, metabolic labeling of prenylated proteins was first carried out with an alkyne-modified isoprenoid analog, C15Alk, in the presence or absence of the FTI L-744,832. The resulting alkyne-tagged proteins were then labeled with Cy3-N3 and Cy5-N3 and subjected to 2D-DIGE. Multiple spots having altered levels of labeling in presence of the FTI were observed. Mass spectrometric analysis of some of the differentially labeled spots identified several known prenylated proteins, along with HisRS, PACN-3, GNAI-1 and GNAI-2, which are not known to be prenylated. In vitro farnesylation of a C-terminal peptide sequence derived from GNAI-1 and GNAI-2 produced a farnesylated product, suggesting GNAI-1 and GNAI-2 are potential novel farnesylated proteins. These results suggest that this new strategy could be useful for the identification of prenylated proteins whose level of post-translational modification has been modulated by the presence of an FTI. Additionally, this approach, which decreases sample complexity and thereby facilitates analysis, should be applicable to studies of other post-translational modifications as well.

Indexed as

Staining and LabelingAmino Acid MotifsAmino Acid SequenceChemical FractionationEnzyme InhibitorsFarnesyltranstransferaseGTP-Binding Protein alpha Subunit, Gi2GTP-Binding Protein alpha Subunits, Gi-GoHeLa CellsHumansMass SpectrometryMolecular Sequence DataOctoxynolPolyethylene GlycolsProtein PrenylationTwo-Dimensional Difference Gel ElectrophoresisEnzyme InhibitorsFarnesyltranstransferaseGNAI1 protein, humanGNAI2 protein, humanGTP-Binding Protein alpha Subunit, Gi2GTP-Binding Protein alpha Subunits, Gi-GoNonidet P-40OctoxynolPolyethylene Glycols

Identifiers

PMID24577581
PMCPMC4058996
OpenAlexW2125865922

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Registered trials

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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.