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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2020.04.034
|2 doi
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|a pubmed24n1308.xml
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|a (DE-627)NLM309716276
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|a (NLM)32388422
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|a (PII)S0981-9428(20)30203-5
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Haq, Md Imdadul
|e verfasserin
|4 aut
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|a Tobacco SABP2-interacting protein SIP428 is a SIR2 type deacetylase
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|c 2020
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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 Revised 27.02.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Copyright © 2020 Elsevier Masson SAS. All rights reserved.
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|a Salicylic acid is widely studied for its role in biotic stress signaling in plants. Several SA-binding proteins, including SABP2 (salicylic acid-binding protein 2) has been identified and characterized for their role in plant disease resistance. SABP2 is a 29 kDA tobacco protein that binds to salicylic acid with high affinity. It is a methylesterase enzyme that catalyzes the conversion of methyl salicylate into salicylic acid required for inducing a robust systemic acquired resistance (SAR) in plants. Methyl salicylic acid is one of the several mobile SAR signals identified in plants. SABP2-interacting protein 428 (SIP428) was identified in a yeast two-hybrid screen using tobacco SABP2 as a bait. In silico analysis shows that SIP428 possesses the SIR2 (silent information regulatory 2)-like conserved motifs. SIR2 enzymes are orthologs of sirtuin proteins that catalyze the NAD+-dependent deacetylation of Nε lysine-acetylated proteins. The recombinant SIP428 expressed in E. coli exhibits SIR2-like deacetylase activity. SIP428 shows homology to Arabidopsis AtSRT2 (67% identity), which is implicated in SA-mediated basal defenses. Immunoblot analysis using anti-acetylated lysine antibodies showed that the recombinant SIP428 is lysine acetylated. The expression of SIP428 transcripts was moderately downregulated upon infection by TMV. In the presence of SIP428, the esterase activity of SABP2 increased modestly. The interaction of SIP428 with SABP2, it's regulation upon pathogen infection, and similarity with AtSRT2 suggests that SIP428 is likely to play a role in stress signaling in plants
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|a Journal Article
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|a Lysine-acetylation
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|a Nicotiana tabacum
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|a SABP2
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|a SIP428
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|a SIR2 deacetylase
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1 |
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|a Thakuri, Bal Krishna Chand
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hobbs, Tazley
|e verfasserin
|4 aut
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| 700 |
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|a Davenport, Mackenzie L
|e verfasserin
|4 aut
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| 700 |
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|a Kumar, Dhirendra
|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 152(2020) vom: 30. Apr., Seite 72-80
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:152
|g year:2020
|g day:30
|g month:04
|g pages:72-80
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|u http://dx.doi.org/10.1016/j.plaphy.2020.04.034
|3 Volltext
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