Evidence map›Paper›PMID 32409575›Full record

ArticleThe Journal of biological chemistry2020

Roles of the clip domains of two protease zymogens in the coagulation cascade in horseshoe crabs.

Keisuke Yamashita, Toshio Shibata, Toshiaki Takahashi, Yuki Kobayashi, Shun-Ichiro Kawabata

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.5field-weighted citation impact, top 38% 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

2 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
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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 2 institutions in 1 country.

Keisuke YamashitaGraduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan.
Toshio ShibataGraduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan; Department of Biology, Faculty of Science, Kyushu University, Fukuoka, Japan.
Toshiaki TakahashiGraduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan.
Yuki KobayashiLAL Research, Central Research Laboratory, Seikagaku Corporation, Higashiyamato, Tokyo, Japan.
Shun-Ichiro KawabataGraduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan; Department of Biology, Faculty of Science, Kyushu University, Fukuoka, Japan. Electronic address: sskawascb@kyudai.jp.
Kyushu University · JPSeikagaku Corporation (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The lipopolysaccharide (LPS)-triggered coagulation cascade in horseshoe crabs comprises three protease zymogens: prochelicerase C (proC), prochelicerase B (proB), and the proclotting enzyme (proCE). The presence of LPS results in autocatalytic activation of proC to α-chelicerase C, which, in turn, activates proB to chelicerase B, converting proCE to the clotting enzyme (CE). ProB and proCE contain an N-terminal clip domain, but the roles of these domains in this coagulation cascade remain unknown. Here, using recombinant proteins and kinetics and binding assays, we found that five basic residues in the clip domain of proB are required to maintain its LPS-binding activity and activation by α-chelicerase C. Moreover, an amino acid substitution at a potential hydrophobic cavity in proB's clip domain (V55A-proB) reduced both its LPS-binding activity and activation rate. WT proCE exhibited no LPS-binding activity, and the WT chelicerase B-mediated activation of a proCE variant with a substitution at a potential hydrophobic cavity (V53A-proCE) was ∼4-fold slower than that of WT proCE. The

Indexed as

AnimalsArthropod ProteinsBlood CoagulationEndopeptidasesEnzyme ActivationEnzyme PrecursorsHorseshoe CrabsLipopolysaccharidesModels, MolecularPeptide HydrolasesProtein DomainsArthropod ProteinsEndopeptidasesEnzyme PrecursorsLipopolysaccharidesPeptide Hydrolasespro-clotting enzymeclip domaincoagulation cascadecoagulation factorendotoxinenzyme mutationenzyme processinglipopolysaccharide (LPS)prochelicerase B (proB)proclotting enzyme (proCE)recombinant protein expressionserine protease

Identifiers

PMID32409575
PMCPMC7324516
OpenAlexW3024386727

What OpenQuestion holds

Textmetadata
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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.