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Article

Identification of a Ca(2+)-pectate binding site on an apoplastic peroxidase.

The Plant cell - 1 Mar 2001

Carpin S, Crèvecoeur M, de Meyer M, Simon P, Greppin H, Penel C

Abstract excerpt

An apoplastic isoperoxidase from zucchini (APRX) was shown to bind strongly to polygalacturonic acid in their Ca(2)+-induced conformation. By homology modeling, we were able to identify a motif of four clustered arginines (positions 117, 262, 268, and 271) that could be responsible for this binding. To verify the role of these arginine residues in the binding process, we prepared three mutants of APRX (M1, R117S;...

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Identifiers

PMID: 11251093
DOI: 10.1105/tpc.13.3.511
PMCID: PMC135502

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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