Evidence map›Paper›PMID 15589755›Full record

ArticleJournal of the American Society for Mass Spectrometry2004

Characterization of N-terminal processing of group VIA phospholipase A2 and of potential cleavage sites of amyloid precursor protein constructs by automated identification of signature peptides in LC/MS/MS analyses of proteolytic digests.

Haowei Song, Silva Hecimovic, Alison Goate, Fong-Fu Hsu, Shunzhong Bao, Ilan Vidavsky, Sasanka Ramanadham, John Turk

Abstract read
In one paragraph

Article in Journal of the American Society for Mass Spectrometry, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

12 citing papers in PubMed, 15 citations in OpenAlex.

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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

8 authors at 1 institution in 1 country.

Haowei SongWashington University School of Medicine, St. Louis, MO 63110, USA.
Silva Hecimovic
Alison Goate
Fong-Fu Hsu
Shunzhong Bao
Ilan Vidavsky
Sasanka Ramanadham
John Turk
Washington University in St. Louis · US

Funding

Washington University Nutrition Obesity Research CenterP30DK056341 · NIDDK · WASHINGTON UNIVERSITY · PI Brian N Finck · 1999 to 2026
$30.2M
TRANSGENICS COREP60DK020579 · NIDDK · WASHINGTON UNIVERSITY · PI SCHAFFER, JEAN E. · 1986 to 2012
$25.2M
Regulation of lipid metabolism in diabetic myocardiumP01HL057278 · NHLBI · WASHINGTON UNIVERSITY · PI GROSS, RICHARD W · 1996 to 2012
$21.8M
YOGA LIFESTYLE INTERVENTION REDUCES BLOOD PRESSURE IN HIV-INFECTED ADULTSP41RR000954 · NCRR · WASHINGTON UNIVERSITY · PI GROSS, MICHAEL L · 1985 to 2011
$16.0M
PHOSPHOLIPID-DERIVED MEDIATORS AND INSULIN SECRETIONR37DK034388 · NIDDK · WASHINGTON UNIVERSITY · PI TURK, JOHN W · 1993 to 2010
$4.9M
CALCIUM-INDEPENDENT PLA2BETA IN BETA-CELL APOPTOSISR01DK069455 · NIDDK · WASHINGTON UNIVERSITY · PI RAMANADHAM, SASANKA · 2004 to 2013
$2.7M
NCRR NIH HHS P41 RR000954NCRR NIH HHS P41-RR00954NHLBI NIH HHS P01 HL057278NIDDK NIH HHS P30 DK056341NIDDK NIH HHS P30-DK56341NIDDK NIH HHS P60 DK020579NIDDK NIH HHS P60-DK20579NIDDK NIH HHS R01 DK069455NIDDK NIH HHS R37 DK034388NIDDK NIH HHS R37-DK34388
6 · The paper itself

Abstract

Dysregulation of proteolytic processing of the amyloid precursor protein (APP) contributes to the pathogenesis of Alzheimer's Disease, and the Group VIA phospholipase A(2) (iPLA(2)beta) is the dominant PLA(2) enzyme in the central nervous system and is subject to regulatory proteolytic processing. We have identified novel N-terminal variants of iPLA(2)beta and previously unrecognized proteolysis sites in APP constructs with a C-terminal 6-myc tag by automated identification of signature peptides in LC/MS/MS analyses of proteolytic digests. We have developed a Signature-Discovery (SD) program to characterize protein isoforms by identifying signature peptides that arise from proteolytic processing in vivo. This program analyzes MS/MS data from LC analyses of proteolytic digests of protein mixtures that can include incompletely resolved components in biological samples. This reduces requirements for purification and thereby minimizes artifactual modifications during sample processing. A new algorithm to generate the theoretical signature peptide set and to calculate similarity scores between predicted and observed mass spectra has been tested and optimized with model proteins. The program has been applied to the identification of variants of proteins of biological interest, including APP cleavage products and iPLA(2)beta, and such applications demonstrate the utility of this approach.

Indexed as

SpodopteraAlgorithmsAmino Acid SequenceAmyloid beta-Protein PrecursorAnimalsCells, CulturedHumansIsoenzymesMolecular Sequence DataPeptide HydrolasesPeptidesPhospholipases APhospholipases A2Spectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAmyloid beta-Protein PrecursorIsoenzymesPeptide HydrolasesPeptidesPhospholipases APhospholipases A2

Identifiers

PMID15589755
PMCPMC3732747
OpenAlexW2083253873

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.