Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Pollen grains are covered by exine that protects the pollen from stress and facilitates pollination. Here we isolated a male sterile mutant s13283 in rice exhibiting aborted pollen with abnormal exine and defective aperture. The mutant gene encodes a novel plasma membrane-localized legume-lectin receptor kinase that we named OsLecRK-S.7. OsLecRK-S.7 was expressed at different levels in all tested tissues and throughout anther development. In vitro kinase assay showed OsLecRK-S.7 capable of autophosporylation. Mutation in s13283 (E560K) and mutation of the conserved ATP binding site (K418E) both knocked out the kinase activity. Mass spectrometry showed Thr , Ser , Thr , Thr , and Thr to be the autophosphorylation sites. Mutation of individual autophosphorylation site affected the in vitro kinase activity to different degrees, but did not abolish the gene function in fertility complementation. oslecrk-s.7 mutant plant overexpressing OsLecRK-S.7 recovered male fertility but showed severe growth retardation with reduced number of tillers, and these phenotypes were abolished by E560K or K418E mutation. The results indicated that OsLecRK-S.7 was a key regulator of pollen development.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/jipb.12897 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rac1 palmitoylation is required for cardiac stress adaptation and regulation of Protein Kinase A signaling.
JCI Insight
September 2025
Department of Pharmacology, University of Michigan, Ann Arbor, United States of America.
Cardiac hypertrophy is a common adaptation to cardiovascular stress and often a prelude to heart failure. We examined how S-palmitoylation of the small GTPase, Ras-related C3 botulinum toxin substrate 1 (Rac1), impacts cardiomyocyte stress signaling. Mutation of the cysteine-178 palmitoylation site impaired activation of Rac1 when overexpressed in cardiomyocytes.
View Article and Find Full Text PDFS-nitrosylation of pVHL regulates β adrenergic receptor function.
Proc Natl Acad Sci U S A
September 2025
Department of Medicine, Institute for Transformative Molecular Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106.
The β-adrenergic receptor (βAR), a prototype G protein-coupled receptor, controls cardiopulmonary function underpinning O delivery. Abundance of the βAR is canonically regulated by G protein-coupled receptor kinases and β-arrestins, but neither controls constitutive receptor levels, which are dependent on ambient O. Basal βAR expression is instead regulated by the prolyl hydroxylase/pVHL-E3 ubiquitin ligase system, explaining O responsivity.
View Article and Find Full Text PDFCorrection: Thrombin receptor PAR4 cross-activates the tyrosine kinase c-met in atrial cardiomyocytes.
Naunyn Schmiedebergs Arch Pharmacol
September 2025
Institute of Pharmacology, West German Heart and Vascular Center, University Duisburg-Essen, Duisburg, Germany.
Calcifications Affect Pathologic Complete Response and MRI Prediction after Neoadjuvant Chemotherapy in Human Epidermal Growth Factor Receptor 2-positive Breast Cancer.
Radiology
September 2025
Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea.
Background The optimal surgical management of human epidermal growth factor receptor 2 (HER2)-positive breast cancer with calcifications remains controversial, particularly when pathologic complete response (pCR) is suspected. Purpose To identify factors associated with pCR after neoadjuvant chemotherapy in patients with HER2-positive breast cancer and assess whether calcifications affect the performance of radiologic complete response (rCR) at MRI for predicting pCR. Materials and Methods This retrospective study included patients with HER2-positive breast cancer who received neoadjuvant docetaxel, carboplatin, trastuzumab, and pertuzumab and underwent surgery between January 2021 and October 2023.
View Article and Find Full Text PDFThe present investigation elucidates the therapeutic potential of glycyrrhizin, the predominant triterpene saponin isolated from (licorice), in the management of systemic lupus erythematosus (SLE), an autoimmune disorder characterized by multisystemic involvement and therapeutic recalcitrance. Comprehensive interrogation of multiple disease-specific databases facilitated the identification of crucial SLE-associated molecular targets and hub genes, with MAPK1, MAPK3, TP53, JUN, and JAK2 demonstrating the highest degree of network centrality. Subsequent molecular docking simulations and binding affinity assessments revealed compounds with exceptional complementarity to these pivotal molecular targets, establishing as a pharmacologically promising botanical source and glycyrrhizin as its principal bioactive constituent meriting comprehensive mechanistic investigation.
View Article and Find Full Text PDF