Evidence map›Paper›PMID 16428408›Full record

ArticleJournal of bacteriology2006

Biochemical analysis of Lpt3, a protein responsible for phosphoethanolamine addition to lipooligosaccharide of pathogenic Neisseria.

Ellen T O'Connor, Andrzej Piekarowicz, Karen V Swanson, J McLeod Griffiss, Daniel C Stein

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

8 citing papers in PubMed, 19 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

5 authors at 3 institutions in 2 countries.

Ellen T O'ConnorDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA.
Andrzej Piekarowicz
Karen V Swanson
J McLeod Griffiss
Daniel C Stein
University of California, San Francisco · USUniversity of Maryland, College Park · USUniversity of Warsaw · PL

Funding

LIPOOLIGOSACCHARIDE BIOSYNTHESIS IN NEISSERIACEAER01AI024452 · NIAID · UNIVERSITY OF MARYLAND COLLEGE PK CAMPUS · PI STEIN, DANIEL C · 1995 to 2004
$1.3M
IMMUNOCHEMISTRY OF GONOCOCCAL LIPOPOLYSACCHARIDER01AI021620 · NIAID · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI GRIFFISS, JOHN MCLEOD · 1985 to 2003
$1.1M
Lipooligosaccharide biosynthesis in NeisseriaceaeR56AI024452 · NIAID · UNIV OF MARYLAND, COLLEGE PARK · PI STEIN, DANIEL C · 2006 to 2006
$359k
LIPOOLIGOSACCHARIDE BIOSYNTHESIS IN NEISSERIACEAER29AI024452 · NIAID · UNIVERSITY OF MARYLAND COLLEGE PK CAMPUS · PI STEIN, DANIEL C · 1988 to 1992
–
NIAID NIH HHS AI21620NIAID NIH HHS AI24452NIAID NIH HHS R01 AI021620NIAID NIH HHS R01 AI024452NIAID NIH HHS R56 AI024452
6 · The paper itself

Abstract

The inner core of neisserial lipooligosaccharide (LOS) contains heptose residues that can be decorated by phosphoethanolamine (PEA). PEA modification of heptose II (HepII) can occur at the 3, 6, or 7 position(s). We used a genomic DNA sequence of lpt3, derived from Neisseria meningitidis MC58, to search the genomic sequence of N. gonorrhoeae FA1090 and identified a homolog of lpt3 in N. gonorrhoeae. A PCR amplicon containing lpt3 was amplified from F62DeltaLgtA, cloned, mutagenized, and inserted into the chromosome of N. gonorrhoeae strain F62DeltaLgtA, producing strain F62DeltaLgtAlpt3::Tn5. LOS isolated from this strain lost the ability to bind monoclonal antibody (MAb) 2-1-L8. Complementation of this mutation by genetic removal of the transposon insertion restored MAb 2-1-L8 binding. Mass spectrometry analysis of LOS isolated from the F62DeltaLgtA indicated that this strain contained two PEA modifications on its LOS. F62DeltaLgtAlpt3::Tn5 lacked a PEA modification on its LOS, a finding consistent with the hypothesis that lpt3 encodes a protein mediating PEA addition onto gonococcal LOS. The DNA encoding lpt3 was cloned into an expression vector and Lpt3 was purified. Purified Lpt3 was able to mediate the addition of PEA to LOS isolated from F62DeltaLgtAlpt3::Tn5.

Indexed as

Amino Acid SequenceBacterial ProteinsDNA, BacterialEthanolaminesLipopolysaccharidesMolecular Sequence DataNeisseria gonorrhoeaeBacterial ProteinsDNA, BacterialEthanolamineslipid-linked oligosaccharidesLipopolysaccharidesphosphorylethanolamine

Identifiers

PMID16428408
PMCPMC1347319
OpenAlexW2161226911

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.