Description : (at3g14270 : 426.0) Encodes a protein that is predicted to act as a 1-phosphatidylinositol-3-phosphate (PtdIns3P) 5-kinase based on its homology to Fab1 from yeast. It contains an FYVE domain required for binding to PtdIns3P-containing membranes in yeast, as well as a Cpn60_TCP1 homology domain plus a kinase domain. fab1a/fab1b pollen grains not viable and have defective vacuolar organization.; FORMS APLOID AND BINUCLEATE CELLS 1B (FAB1B); CONTAINS InterPro DOMAIN/s: Chaperonin Cpn60/TCP-1 (InterPro:IPR002423), Zinc finger, FYVE-type (InterPro:IPR000306), Zinc finger, FYVE-related (InterPro:IPR017455), Zinc finger, FYVE/PHD-type (InterPro:IPR011011), Phosphatidylinositol-4-phosphate 5-kinase, core (InterPro:IPR002498); BEST Arabidopsis thaliana protein match is: 1-phosphatidylinositol-4-phosphate 5-kinases;zinc ion binding;1-phosphatidylinositol-3-phosphate 5-kinases (TAIR:AT4G33240.2); Has 8765 Blast hits to 8134 proteins in 458 species: Archae - 587; Bacteria - 13; Metazoa - 3836; Fungi - 1744; Plants - 978; Viruses - 3; Other Eukaryotes - 1604 (source: NCBI BLink). & (reliability: 852.0) & (original description: no original description)
Condition specificity: 2 h after dark (SPM: 0.63, entropy: 2.25, tau: 0.51)