skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Biosynthesis and secretion of the microbial sulfated peptide RaxX and binding to the rice XA21 immune receptor

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [1];  [1];  [3];  [3];  [1];  [1];  [5];  [4]; ORCiD logo [2]
  1. Department of Plant Pathology, University of California, Davis, CA 95616,, The Genome Center, University of California, Davis, CA 95616,
  2. Department of Plant Pathology, University of California, Davis, CA 95616,, The Genome Center, University of California, Davis, CA 95616,, Feedstocks Division, Joint Bioenergy Institute, Emeryville, CA 94608,
  3. Technology Division, Joint Bioenergy Institute, Emeryville, CA 94608,
  4. Gregor Mendel Institute, Austrian Academy of Sciences, 1030 Vienna, Austria,
  5. Department of Microbiology &, Molecular Genetics, University of California, Davis, CA 95616

The rice immune receptor XA21 is activated by the sulfated microbial peptide required for activation of XA21-mediated immunity X (RaxX) produced by Xanthomonas oryzae pv. oryzae(Xoo). Mutational studies and targeted proteomics revealed that the RaxX precursor peptide (proRaxX) is processed and secreted by the protease/transporter RaxB, the function of which can be partially fulfilled by a noncognate peptidase-containing transporter component B (PctB). proRaxX is cleaved at a Gly–Gly motif, yielding a mature peptide that retains the necessary elements for RaxX function as an immunogen and host peptide hormone mimic. These results indicate that RaxX is a prokaryotic member of a previously unclassified and understudied group of eukaryotic tyrosine sulfated ribosomally synthesized, posttranslationally modified peptides (RiPPs). We further demonstrate that sulfated RaxX directly binds XA21 with high affinity. This work reveals a complete, previously uncharacterized biological process: bacterial RiPP biosynthesis, secretion, binding to a eukaryotic receptor, and triggering of a robust host immune response.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1505236
Alternate ID(s):
OSTI ID: 1561911
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 116 Journal Issue: 17; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

References (54)

Standard Flow Liquid Chromatography for Shotgun Proteomics in Bioenergy Research journal April 2015
Substrate Specificity of the Secreted Nisin Leader Peptidase NisP journal July 2017
Non-arginine-aspartate (non-RD) kinases are associated with innate immune receptors that recognize conserved microbial signatures journal August 2012
The Majority of the Type III Effector Inventory of Pseudomonas syringae pv. tomato DC3000 Can Suppress Plant Immunity journal September 2009
Peptide signal molecules and bacteriocins in Gram-negative bacteria: a genome-wide in silico screening for peptides containing a double-glycine leader sequence and their cognate transporters journal September 2004
Allosteric receptor activation by the plant peptide hormone phytosulfokine journal August 2015
Engineering hybrid genes without the use of restriction enzymes: gene splicing by overlap extension journal April 1989
A microbially derived tyrosine-sulfated peptide mimics a plant peptide hormone journal May 2017
Tyrosine-sulfated glycopeptide involved in cellular proliferation and expansion in Arabidopsis journal November 2007
Identification of a novel two-peptide lantibiotic, Haloduracin, produced by the alkaliphile Bacillus halodurans C-125 journal February 2007
Chimeric Leader Peptides for the Generation of Non-Natural Hybrid RiPP Products journal June 2017
Tyrosine sulfation: an increasingly recognised post-translational modification of secreted proteins journal June 2009
Bioengineering of lanthipeptides in Escherichia coli: assessing the specificity of lichenicidin and haloduracin biosynthetic machinery journal September 2014
An RTX Transporter Tethers Its Unfolded Substrate during Secretion via a Unique N-Terminal Domain journal October 2012
The rice immune receptor XA21 recognizes a tyrosine-sulfated protein from a Gram-negative bacterium journal July 2015
Heterologous expression of bacteriocins using the mesentericin Y105 dedicated transport system by Leuconostoc mesenteroides journal May 2002
Protein-binding assays in biological liquids using microscale thermophoresis journal October 2010
Genetic analysis of the colicin V secretion pathway. journal September 1995
A Receptor Kinase-Like Protein Encoded by the Rice Disease Resistance Gene, Xa21 journal December 1995
Root diffusion barrier control by a vasculature-derived peptide binding to the SGN3 receptor journal January 2017
A targeted proteomics toolkit for high-throughput absolute quantification of Escherichia coli proteins journal November 2014
Mutational Analysis of Cvab, an ABC Transporter Involved in the Secretion of Active Colicin V journal April 2012
Substrate Recognition Mechanism of the Peptidase Domain of the Quorum-Sensing-Signal−Producing ABC Transporter ComA from Streptococcus journal February 2008
On the acquisition and analysis of microscale thermophoresis data journal March 2016
In Vitro Reconstitution and Substrate Specificity of a Lantibiotic Protease journal July 2008
Expression of Xanthomonas oryzae pv. oryzae hrp Genes in XOM2, a Novel Synthetic Medium journal December 2002
Crystal Structure of the Peptidase Domain of Streptococcus ComA, a Bifunctional ATP-binding Cassette Transporter Involved in the Quorum-sensing Pathway journal January 2010
Bacterial Genes Involved in Type I Secretion and Sulfation Are Required to Elicit the Rice Xa21 -Mediated Innate Immune Response journal June 2004
Phytosulfokine, sulfated peptides that induce the proliferation of single mesophyll cells of Asparagus officinalis L. journal July 1996
The leader peptide of colicin V shares consensus sequences with leader peptides that are common among peptide bacteriocins produced by Gram-positive bacteria journal September 1994
WebLogo: A Sequence Logo Generator journal May 2004
An Engineered Lantibiotic Synthetase That Does Not Require a Leader Peptide on Its Substrate journal April 2012
A second-generation expression system for tyrosine-sulfated proteins and its application in crop protection journal January 2016
A peptide hormone required for Casparian strip diffusion barrier formation in Arabidopsis roots journal January 2017
Influence of Amino Acid Substitutions in the Leader Peptide on Maturation and Secretion of Mesentericin Y105 by Leuconostoc mesenteroides journal March 2005
Mutational analysis of the putative leukotoxin transport genes in Actinobacillus actinomycetemcomitans journal May 1995
The Rhomboid-Like Superfamily: Molecular Mechanisms and Biological Roles journal October 2014
A new method to customize protein expression vectors for fast, efficient and background free parallel cloning journal January 2013
Cys 32 and His 105 Are the Critical Residues for the Calcium-dependent Cysteine Proteolytic Activity of CvaB, an ATP-binding Cassette Transporter journal October 2003
A family of bacteriocin ABC transporters carry out proteolytic processing of their substrates concomitant with export journal April 1995
Insights into AMS/PCAT transporters from biochemical and structural characterization of a double Glycine motif protease journal January 2019
The Xanthomonas Ax21 protein is processed by the general secretory system and is secreted in association with outer membrane vesicles journal January 2014
Mutagenesis of all Eight avr Genes in Xanthomonas campestris pv. campestris Had No Detected Effect on Pathogenicity, But One avr Gene Affected Race Specificity journal December 2005
Fast, scalable generation of high‐quality protein multiple sequence alignments using Clustal Omega journal January 2011
Expression and Characterization of the Peptidase Domain of Streptococcus pneumoniae ComA, a Bifunctional ATP-binding Cassette Transporter Involved in Quorum Sensing Pathway journal December 2005
ATP-dependent leader peptide cleavage by NukT, a bifunctional ABC transporter, during lantibiotic biosynthesis journal December 2009
Identification of a Family of Avirulence Genes from Xanthomonas oryzae pv. oryzae journal January 1992
Contribution of the glutamine 19 side chain to transition-state stabilization in the oxyanion hole of papain journal September 1991
Tyrosine sulfation in a Gram-negative bacterium journal January 2012
Secreted Peptide Signals Required for Maintenance of Root Stem Cell Niche in Arabidopsis journal August 2010
Tyrosine Sulfation of the Amino Terminus of CCR5 Facilitates HIV-1 Entry journal March 1999
Suppression of bacterial infection in rice by treatment with a sulfated peptide: Suppression of bacterial infection in rice journal April 2016
Follow the leader: the use of leader peptides to guide natural product biosynthesis journal December 2009
Type I secretion systems – a story of appendices journal July 2013