PXD013389

PXD013389 is an original dataset announced via ProteomeXchange.

Title	Biosynthesis and secretion of the microbial sulfated peptide RaxX and binding to the rice XA21 immune receptor
Description	The rice immune receptor XA21 is activated by the sulfated microbial peptide RaxX (required for activation of XA21-mediated immunity X) produced by Xanthomonas oryzae pv. oryzae (Xoo). Mutational studies and targeted proteomics revealed that RaxX is processed and secreted by the protease/transporter RaxB, whose function can be partially fulfilled by a noncognate peptidase-containing transporter B (PctB). RaxX 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 founding member of a previously unclassified and understudied group of tyrosine sulfated RiPPs (ribosomally synthesized, post-translationally modified peptides). 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.
HostingRepository	PanoramaPublic
AnnounceDate	2019-04-16
AnnouncementXML	Submission_2019-04-16_20:01:18.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Chris Petzold
SpeciesList	scientific name: Xanthomonas oryzae pv. oryzae; NCBI TaxID: 64187;
ModificationList	Sulfo
Instrument	6460 Triple Quadrupole LC/MS

Revision	Datetime	Status	ChangeLog Entry
0	2019-04-06 13:43:40	ID requested
⏵ 1	2019-04-16 20:01:20	announced

Luu DD, Joe A, Chen Y, Parys K, Bahar O, Pruitt R, Chan LJG, Petzold CJ, Long K, Adamchak C, Stewart V, Belkhadir Y, Ronald PC, Biosynthesis and secretion of the microbial sulfated peptide RaxX and binding to the rice XA21 immune receptor. Proc Natl Acad Sci U S A, 116(17):8525-8534(2019) [pubmed]

submitter keyword: RaxX, X. oryzae, XA21 immune receptor, Tyrosine sulfation, RiPPs

Chris Petzold
contact affiliation	Lawrence Berkeley National Laboratory
contact email	cjpetzold@lbl.gov
lab head
Chris Petzold
contact affiliation	Lawrence Berkeley National Laboratory
contact email	cjpetzold@lbl.gov
dataset submitter

Panorama Public dataset URI