Evidence map›Paper›PMID 12717870›Full record

ArticleWorld journal of gastroenterology2003

Recombinant Helicobacter pylori catalase.

Yang Bai, Ya-Li Zhang, Jian-Feng Jin, Ji-De Wang, Zhao-Shan Zhang, Dian-Yuan Zhou

Open access · hybridAbstract read
In one paragraph

Article in World journal of gastroenterology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 29% 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

4 citing papers in PubMed, 9 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

6 authors at 1 institution in 1 country.

Yang BaiPLA Institute for Digestive Medicine, Nanfang Hospital, the First Military Medical University, Guangzhou 510515, Guangdong Province, China. baiyang1030@hotmail.com
Ya-Li Zhang
Jian-Feng Jin
Ji-De Wang
Zhao-Shan Zhang
Dian-Yuan Zhou
Nanfang Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo construct a recombinant strain which highly expresses catalase of Helicobacter pylori (H. pylori) and assay the activity of H. pylori catalase.

methodsThe catalase DNA was amplified from H. pylori chromosomal DNA with PCR techniques and inserted into the prokaryotie expression vector pET-22b (+), and then was transformed into the BL21 (DE3) E.coli strain which expressed catalase recombinant protein. The activity of H. pylori catalase was assayed by the Beers and Sizers.

resultsDNA sequence analysis showed that the sequence of catalase DNA was the same as GenBank's research. The catalase recombinant protein amounted to 24.4 % of the total bacterial protein after induced with IPTG for 3 hours at 37 degrees and the activity of H. pylori catalase was high in the BL21 (DE3) E.coli strain.

conclusionA clone expressing high activity H. pylori catalase is obtained, laying a good foundation for further studies.

Indexed as

Base SequenceCatalaseCloning, MolecularDNA, BacterialEscherichia coliGene ExpressionGenes, BacterialGenetic VectorsHelicobacter pyloriRecombinant ProteinsRecombination, GeneticCatalaseDNA, BacterialRecombinant Proteins

Identifiers

PMID12717870
PMCPMC4611386
OpenAlexW291926733

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.