EuroXanth DokuWiki

This is an old revision of the document!

Class: XopB
Family: XopB
Prototype: XopB (Xanthomonas euvesicatoria pv. euvesicatoria aka Xanthomonas campestris pv. vescicatoria; strain 85-10)
RefSeq ID: WP_039417318.1
3D structure: unknown

Biological function

How discovered? XopB was discovered in a cDNA-AFLP screen^[1] .
(Experimental) evidence for being a T3E: A chimeric protein consisting of a C-terminally truncated XopB where the last 52 residues (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^[1] .
Regulation: The xopB gene was shown to be expressed in a hrpG- and hrpX-dependent manner^[1] .
Mutant phenotype: A deletion of xopB did not affect pathogenicity or bacterial growth in plants^[1] .
Enzymatic function:
Interaction partners:

Conservation

In xanthomonads:
In other plant pathogens/symbionts:

References

1. 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: 10.1046/j.1365-2958.2001.02567.x.
2. 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.
3. 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.
4. 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.
5. Harrison J, Studholme DJ (2014). Draft genome sequence of Xanthomonas axonopodis pathovar vasculorum NCPPB 900. FEMS Microbiol Lett. 360(2): 113-116.
6. 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.
7. 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.