Proteins
Curated comments from UniProt
| Type | Comment |
|---|---|
| developmental stage | Preferentially expressed in the S and G2 phases. Expressed in actively dividing cells: root and shoot apical meristems, leaf primordia and emerging lateral root meristem. Expressed in light-grown seedlings from 1 up to 7 days after germination with a peak at 2 and 3 days. Observed in late guard mother cells (GMC), newly formed guard cells, and immature stomata, thus being expressed just before and after the symmetric division of stomatal differentiation (PubMed:20675570). |
| function | May control G2/M (mitosis) phase progression. Plays a role in regulating seedling growth in darkness via regulation of hypocotyl cell elongation and cotyledon cell development. Plays a role in stomatal development. Required to suppress endoreduplication. Together with CDKB1-2, promotes both the last division in the stomatal cell lineage as well as the number of stomata (PubMed:20675570). In collaboration with MYB124 and MYB88, restrict the G1/S transition and chloroplast and nuclear number during stomatal formation, and normally maintain fate and developmental progression throughout the stomatal cell lineage (PubMed:24123248, PubMed:24687979). |
| similarity | Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily. |
| tissue specificity | Highly expressed in guard cells and stomatal precursor cells of cotyledons. Expressed in roots, stems, flowers and siliques. |
