RRC ID 33100
Author Delporte A, De Vos WH, Van Damme EJ.
Title In vivo interaction between the tobacco lectin and the core histone proteins.
Journal J. Plant Physiol.
Abstract Nictaba, a lectin accumulating in tobacco (Nicotiana tabacum) leaves treated with jasmonate, is considered to act as a signaling protein in the stress physiology of the plant. Immunolocalization studies revealed that Nictaba has a nucleocytoplasmic localization. In previous research, histones were identified as primary interaction partners for Nictaba. Here, the interaction between Nictaba and tobacco histones was scrutinized in vivo. Localization studies, performed in stably transformed Nicotiana benthamiana plants, confirmed the nucleocytoplasmic localization of the lectin and colocalization with the presumed binding partners in the nucleus. Furthermore, bimolecular fluorescence complementation (BiFC) assays confirmed the interaction in vivo. Since BiFC signals were also observed for a Nictaba mutant incapable of binding sugar moieties, this interaction may be mediated by alternative binding sites. The interaction of Nictaba with core histones possibly reflects a role of this stress inducible lectin in gene regulation or chromatin remodeling.
Volume 171(13)
Pages 1149-56
Published 2014-8-15
DOI 10.1016/j.jplph.2014.04.008
PII S0176-1617(14)00113-8
PMID 24973587
MeSH Binding Sites Biological Transport Cell Nucleus / metabolism Cyclopentanes / pharmacology Fluorescence Resonance Energy Transfer Gene Expression Regulation, Plant* Genes, Reporter Histones / genetics Histones / metabolism* Lectins / genetics Lectins / metabolism* Mutation Oxylipins / pharmacology Plant Growth Regulators / pharmacology Plant Leaves / metabolism Plant Proteins / genetics Plant Proteins / metabolism Plants, Genetically Modified Recombinant Fusion Proteins Tobacco / cytology Tobacco / drug effects Tobacco / genetics Tobacco / metabolism*
IF 2.825
Times Cited 8
Arabidopsis / Cultured plant cells, genes pda18758 pda18771 pda19851