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-Class: XopB /
-Family: XopB /
-Prototype: (Species, Strain) /
-RefSeq ID: /
-D:
-__Biological function__
-How discovered? XopB was discovered in a cDNA-AFLP screen<sup>[1]</sup>.
-(Experimental) evidence for being a T3E: A chimeric protein consisting of a C-terminally truncated XopAs where the last 52 residues of XopB (5 kDa) were replaced by the triple c-myc epitope (5 kDa) was secreted into culture supernatants of a strain with a constitutively active form of //hrpG// in a type III secretion-dependent manner<sup>[1]</sup>. / Regulation: The //xopB// gene was shown to be expressed in a //hrpG//- and //hrpX//-dependent manner<sup>[1]</sup>. /
-Mutant phenotype: A deletion of //xopB// did not affect pathogenicity or bacterial growth in plants<sup>[1]</sup>. /
-Enzymatic function: /
-Interaction partners:
-__Conservation__
-In xanthomonads /
-In other plant pathogens/symbionts
-__References__
-  - Noël L, Thieme F, Nennstiel D, Bonas U (2001). cDNA-AFLP analysis unravels a genome-wide //hrpG//-regulon in the plant pathogen //Xanthomonas campestris// pv. //vesicatoria//. Mol. Microbiol. 41(6): 1271-1281. doi: [[https://doi.org/10.1046/j.1365-2958.2001.02567.x|10.1046/j.1365-2958.2001.02567.x]].
-  - Salomon D, Dar D, Sreeramulu S, Sessa G (2011). Expression of //Xanthomonas campestris// pv. //vesicatoria// type III effectors in yeast affects cell growth and viability. Mol. Plant Microbe Interact. 24(3): 305-314. doi: 10.1094/MPMI-09-10-0196.
-  - Schulze S, Kay S, Büttner D, Egler M, Eschen-Lippold L, Hause G, Krüger A, Lee J, Müller O, Scheel D, Szczesny R, Thieme F, Bonas U (2012). Analysis of new type III effectors from //Xanthomonas// uncovers XopB and XopS as suppressors of plant immunity. New Phytol. 195(4): 894-911. doi: 10.1111/j.1469-8137.2012.04210.x.
-  - Sonnewald S, Priller JP, Schuster J, Glickmann E, Hajirezaei MR, Siebig S, Mudgett MB, Sonnewald U (2012). Regulation of cell wall-bound invertase in pepper leaves by //Xanthomonas campestris// pv. //vesicatoria// type three effectors. PLoS One 7(12): e51763. doi: 10.1371/journal.pone.0051763.
-  - Harrison J, Studholme DJ (2014). Draft genome sequence of //Xanthomonas axonopodis// pathovar //vasculorum// NCPPB 900. FEMS Microbiol Lett. 360(2): 113-116.
-  - Priller JP, Reid S, Konein P, Dietrich P, Sonnewald S (2016). The //Xanthomonas campestris// pv. //vesicatoria// type-3 effector XopB inhibits plant defence responses by interfering with ROS production. PLoS One 11(7): e0159107. dos: 10.1371/journal.pone.0159107.
-  - Prochaska H, Thieme S, Daum S, Grau J, Schmidtke C, Hallensleben M, John P, Bacia K, Bonas U (2018). A conserved motif promotes HpaB-regulated export of type III effectors from //Xanthomonas//. Mol. Plant Pathol. 19(11): 2473-2487. doi: 10.1111/mpp.12725.

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