Evidence map›Paper›PMID 24633251›Full record

ArticleMarine drugs2014

Construction and characterization of an Escherichia coli mutant producing Kdo₂-lipid A.

Jianli Wang, Wenjian Ma, Zhou Wang, Ye Li, Xiaoyuan Wang

Open access · goldAbstract read
In one paragraph

Article in Marine drugs, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

17 citing papers in PubMed, 58 citations in OpenAlex.

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  13. AlmG, responsible for polymyxin resistance in pandemicThe Journal of biological chemistry · 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

5 authors at 1 institution in 1 country.

Jianli WangState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China. jlwang88@hotmail.com.
Wenjian MaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China. talentmarvin@sina.com.
Zhou WangState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China. wangzhou0920@126.com.
Ye LiState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China. liye@jiangnan.edu.cn.
Xiaoyuan WangState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China. xwang@jiangnan.edu.cn.
Jiangnan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

3-deoxy-D-manno-oct-2-ulosonic acid (Kdo)₂-lipid A is the conserved structure domain of lipopolysaccharide found in most Gram-negative bacteria, and it is believed to stimulate the innate immune system through the TLR4/MD2 complex. Therefore, Kdo₂-lipid A is an important stimulator for studying the mechanism of the innate immune system and for developing bacterial vaccine adjuvants. Kdo₂-lipid A has not been chemically synthesized to date and could only be isolated from an Escherichia coli mutant strain, WBB06. WBB06 cells grow slowly and have to grow in the presence of tetracycline. In this study, a novel E. coli mutant strain, WJW00, that could synthesize Kdo2-lipid A was constructed by deleting the rfaD gene from the genome of E. coli W3110. The rfaD gene encodes ADP-L-glycero-D-manno-heptose-6-epimerase RfaD. Based on the analysis by SDS-PAGE, thin layer chromatography (TLC) and electrospray ionization mass spectrometry (ESI/MS), WJW00 could produce similar levels of Kdo₂-lipid A to WBB06. WJW00 cells grow much better than WBB06 cells and do not need to add any antibiotics during growth. Compared with the wild-type strain, W3110, WJW00 showed increased hydrophobicity, higher cell permeability, greater autoaggregation and decreased biofilm-forming ability. Therefore, WJW00 could be a more suitable strain than WBB06 for producing Kdo₂-lipid A and a good base strain for developing lipid A adjuvants.

Indexed as

Anti-Bacterial AgentsBiofilmsCarbohydrate EpimerasesChromatography, Thin LayerChromosomes, BacterialDNA, BacterialElectrophoresis, Polyacrylamide GelEscherichia coliLipopolysaccharidesMutationNovobiocinPermeabilitySpectrometry, Mass, Electrospray IonizationADP-L-glycero-D-mannoheptose-6-epimeraseAnti-Bacterial AgentsCarbohydrate EpimerasesDNA, BacterialKdo2-lipid ALipopolysaccharidesNovobiocin

Identifiers

PMID24633251
PMCPMC3967223
OpenAlexW2164443352

What OpenQuestion holds

Textmetadata
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.