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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2021.02.012
|2 doi
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|a pubmed24n1073.xml
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|a (DE-627)NLM322052319
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|a (NLM)33647583
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|a (PII)S0981-9428(21)00079-6
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Arya, Meenakshi
|e verfasserin
|4 aut
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|a Brassica juncea leaf cuticle proteome analysis shows myrosinase protein, antifreeze activity, and post-translationally modified secretory proteins
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 27.04.2021
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|a Date Revised 18.02.2022
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|a published: Print-Electronic
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|a ErratumIn: Plant Physiol Biochem. 2022 Apr 1;176:8. - PMID 35180457
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|a Citation Status MEDLINE
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|a Copyright © 2021 Elsevier Masson SAS. All rights reserved.
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|a Plant cuticle, the site of perception of stress signals, is an extracellular hydrophobic barrier that covers the epidermis of the above-ground parts. This lipidic layer has been explored for its cutin and wax composition. However, reports on the cuticle proteins are scanty. Therefore, leaf cuticle proteins of Brassica juncea isolated using organic solvents (chloroform-methanol, 2:1(v/v)) were analyzed using gel based and quantitative shotgun proteomics. Out of 615 proteins identified, 27% (169) had signal peptides supporting extracellular localization. Bioinformatics tool, QuickGO predicted the involvement of these proteins in catabolism (21%), peptidase activity (13%), oxidoreductase (12%), defense response (9%), fatty acid binding (9%), nutrient reservoir activity (8%), chitin binding (7%) and lipid transport (2%). Myrosinase-catalyzed glucosinolate hydrolysis releases bioactive compounds, which contribute to plant defense. This system is termed as "mustard oil bomb". Myrosinase and its associating protein, GDSL esterase/lipase ESM1 (involved in cuticle structuring and defense) were detected in the cuticle. GDSL-esterase/lipase ESM1 and β-glucanase (an antifreeze protein) showed in vitro activity. Analysis of cuticle extract by nanoliter osmometer-phase contrast microscopy detected antifreeze activity due to non-protein component. Post-translational modification analysis using PTM viewer predicted N-glycosylation (66%), N-terminal proteolysis (40%), and phosphorylation (32%) to be the dominant modification in the classical secretory proteins. N-glycosylation of myrosinase and GDSL esterase/lipase, ESM1 was confirmed by Con A affinoblotting. This study not only identified leaf cuticle proteins, but also laid the foundation for exploring the extracellular glucosinolate-myrosinase system, PTM crosstalk, and antifreeze activity as stress adaptive strategies in B. juncea
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|a Journal Article
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|a Antifreeze protein
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|a Cuticle proteome
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|a Lipid modifications
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|a MALDI TOF/TOF
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| 650 |
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|a N- glycosylation
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| 650 |
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|a Shotgun proteomics
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|a Proteome
|2 NLM
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|a Glycoside Hydrolases
|2 NLM
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| 650 |
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|a EC 3.2.1.-
|2 NLM
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|a thioglucosidase
|2 NLM
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| 650 |
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|a EC 3.2.1.147
|2 NLM
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| 700 |
1 |
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|a Prakash, Satya
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sougrakpam, Yaiphabi
|e verfasserin
|4 aut
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| 700 |
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|a Deswal, Renu
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 161(2021) vom: 15. Apr., Seite 234-247
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:161
|g year:2021
|g day:15
|g month:04
|g pages:234-247
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|u http://dx.doi.org/10.1016/j.plaphy.2021.02.012
|3 Volltext
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