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--- bacteria:t3e:xopbh [2025/05/07 09:26] – [References] rkoebnik
+++ bacteria:t3e:xopbh [2025/11/15 14:10] (current) – jfpothier
@@ Line 2: / Line 2: @@
 Author: [[https://www.researchgate.net/profile/Naama-Wagner|Naama Wagner]]\\
-Internal reviewer: [[https://www.researchgate.net/profile/Ralf_Koebnik|Ralf Koebnik]]
+Internal reviewer: [[https://www.researchgate.net/profile/Leonor-Martins-2|Leonor Martins]]\\
+Expert reviewer: [[https://www.researchgate.net/profile/Ralf_Koebnik|Ralf Koebnik]]\\
 Class: XopBH\\
 Family: XopBH\\
-Prototype: XTG_RS02340 (//Xanthomonas euroxanthea//, strain CPBF 424) Attention: The prototype sequence is too long because codons 18 to 39 overlap with the plant-inducible promoter (see below; Koebnik //et al.//, 2006).\\
+Prototype: XTG_RS02340 (//Xanthomonas euroxanthea//, strain CPBF 424). Attention: The prototype sequence is too long because codons 18 to 39 overlap with the plant-inducible promoter (see below; Koebnik //et al.//, 2006).\\
 GenBank ID: [[https://www.ncbi.nlm.nih.gov/protein/CAE1133144.1|CAJ22212.1]] (286 aa)\\
 RefSeq ID: [[https://www.ncbi.nlm.nih.gov/protein/WP_212580660.1|WP_039417318.1]] (216 aa)\\
@@ Line 15: / Line 16: @@
 === How discovered? ===
-XopBH was discovered by a [[https://effectidor.tau.ac.il|Effectidor II]], a pan-genomic AI-based algorithm for the prediction of type III secretion system effectors (Wagner //et al.//, 2025).
+XopBH was discovered by a [[https://effectidor.tau.ac.il|Effectidor II]], a pan-genomic AI-based algorithm for the prediction of type III secretion system effectors (Wagner //et al.//, 2025). The //xopBH// gene of strain CPBF 424 is located near the T3SS gene cluster, next to [[:bacteria:t3e:xopz|xopZ]] and [[:bacteria:t3e:xopf|xopF]], which are all encoded between //hrpE// and //hrpF// (Huguet & Bonas, 1997; Weber //et al.//, 2005).
 === (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 (Noël //et al.//, 2001). XopB belongs to translocation class B (Schulze //et al.//, 2012). Mutation studies of a putative translocation motif (TrM) showed that the proline/arginine-rich motif is required for efficient type III-dependent secretion and translocation of XopB and determines the dependence of XopB transport on the general T3S chaperone HpaB (Prochaska //et al.//, 2018).
+XopBH was shown to have a functional type III secretion signal using a reporter fusion with AvrBs1 (Zhao //et al.//, 2013).
 === Regulation ===
 The presence of a PIP box and a properly spaced ‐10 promoter motif (TTCGB‐N<sub>15</sub> ‐TTCGB‐N<sub>30–32</sub> ‐YANNNT) suggests that the //xopBH// gene is under control of HrpG and HrpX (Wengelnik & Bonas, 1996; Wengelnik //et al.//, 1996; Koebnik //et al.//, 2006).
 === Phenotypes ===
@@ Line 42: / Line 46: @@
 === In xanthomonads ===
-Yes (//e.g.//, //X. fragariae//, //X. cynarae// pv. //gardneri// (syn. //X. gardneri//), //X. oryzae//, //X. vasicola//) (Harrison //et al.//, 2014).
+Yes (//e.g.//, //X. arboricola//, //X. campestris// pv. //papavericola//, //X. hortorum//).
 === In other plant pathogens/symbionts ===
-Yes (//e.g.//, //Pseudomonas// spp., //Ralstonia solanacearum//, //Acidovorax// spp., //Pantoea agglomerans//) (Schulze //et al.//, 2012).
+No.
 ===== References =====
+Huguet E, Bonas U (1997). //hrpF// of //Xanthomonas campestris// pv. //vesicatoria// encodes an 87-kDa protein with homology to NoIX of //Rhizobium fredii//. Mo.l Plant Microbe Interact. 10: 488-498. DOI: [[https://doi.org/10.1094/MPMI.1997.10.4.488|10.1094/MPMI.1997.10.4.488]]
 Koebnik R, Krüger A, Thieme F, Urban A, Bonas U (2006). Specific binding of the //Xanthomonas campestris// pv. //vesicatoria// AraC-type transcriptional activator HrpX to plant-inducible promoter boxes. J. Bacteriol. 188: 7652-7660. DOI: [[https://doi.org/10.1128/JB.00795-06|10.1128/JB.00795-06]]
 Wagner N, Baumer E, Lyubman I, Shimony Y, Bracha N, Martins L, Potnis N, Chang JH, Teper D, Koebnik R, Pupko T (2025). Effectidor II: A pan-genomic AI-based algorithm for the prediction of type III secretion system effectors. Bioinformatics, in press. DOI: [[https://doi.org/10.1093/bioinformatics/btaf272|10.1093/bioinformatics/btaf272]]
+Weber E, Ojanen-Reuhs T, Huguet E, Hause G, Romantschuk M, Korhonen TK, Bonas U, Koebnik R (2005). The type III-dependent Hrp pilus is required for productive interaction of //Xanthomonas campestris// pv. //vesicatoria// with pepper host plants. J. Bacteriol. 187: 2458-2468. DOI: [[https://doi.org/10.1128/JB.187.7.2458-2468.2005|10.1128/JB.187.7.2458-2468.2005]]
 Wengelnik K, Bonas U (1996). HrpXv, an AraC-type regulator, activates expression of five of the six loci in the hrp cluster of //Xanthomonas campestris// pv. //vesicatoria//. J. Bacteriol. 178: 3462-3469. DOI: [[https://doi.org/10.1128/jb.178.12.3462-3469.1996|10.1128/jb.178.12.3462-3469.1996]]

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