PXD044476-1

PXD044476 is an original dataset announced via ProteomeXchange.

Dataset Summary

Title	Phosphorylation of two Thr residues in the C-terminal auto-inhibitory domain of plasma membrane H+-ATPase is crucial for light-induced stomatal opening-2
Description	Plasma membrane H+-ATPase provides the driving force for light-induced stomatal opening. However, the mechanisms underlying the regulation of its activity remain unclear. Here, we showed that the phosphorylation of two Thr residues in the C-terminal autoinhibitory domain is crucial for H+-ATPase activation and stomatal opening. Our phosphoproteome analysis revealed that blue light induces the phosphorylation of Thr-881 within the C-terminal region I domain and penultimate Thr-948 in AUTOINHIBITED H+-ATPASE 1 (AHA1). The site-directed mutagenesis showed that both Thr phosphorylations are essential for H+ pumping and stomatal opening in response to blue light. The phosphorylation of Thr-948 is a prerequisite for the phosphorylation of Thr-881 by blue light. Furthermore, red-light-driven guard cell photosynthesis also caused Thr-881 phosphorylation, possibly contributing to red-light-dependent stomatal opening. Taken together, our findings provide mechanistic insights into H+-ATPase activation that exploits the ion transport across the plasma membrane and light signalling network in guard cells.
HostingRepository	jPOST
AnnounceDate	2023-12-25
AnnouncementXML	Submission_2023-12-24_21:44:59.069.xml
DigitalObjectIdentifier
ReviewLevel	Non peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Naoyuki Sugiyama
SpeciesList	scientific name: Arabidopsis thaliana (Mouse-ear cress); NCBI TaxID: 3702;
ModificationList	S-carboxamidomethyl-L-cysteine; L-methionine sulfoxide; O-phospho-L-serine; O-phospho-L-threonine; O4'-phospho-L-tyrosine
Instrument	LTQ Orbitrap

Dataset History

Revision	Datetime	Status	ChangeLog Entry
0	2023-08-09 22:02:41	ID requested
⏵ 1	2023-12-24 21:44:59	announced

Publication List

Dataset with its publication pending

Dataset with its publication pending

Keyword List

submitter keyword: Arabidopsis, phosphoproteome

submitter keyword: Arabidopsis, phosphoproteome

Contact List

Atsushi Takemiya
lab head
Naoyuki Sugiyama
contact affiliation	Kyoto University
dataset submitter

Full Dataset Link List

jPOST dataset URI
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jPOST dataset URI

Dataset FTP location
NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.jpostdb.org/JPST002284/