DB identifier
|
AT5G58140 | Secondary Identifier
|
locus:2155821 |
| Name
|
phototropin 2 | Brief Description | phototropin 2 |
| TAIR Computational Description | phototropin 2;(source:Araport11) |
| TAIR Curator Summary | Membrane-bound protein serine/threonine kinase that functions as blue light photoreceptor in redundancy with PHO1. Involved in stomatal opening, chloroplast movement and phototropism. Mediates blue light-induced growth enhancements. PHOT1 and PHOT2 mediate blue light-dependent activation of the plasma membrane H+-ATPase in guard cell protoplasts. PHOT2 possesses two LOV (LOV1 and LOV2, for light-oxygen-voltage-sensing) domains involved in FMN-binding and a C-terminus forming a serine/threonine kinase domain. LOV2 acts as an inhibitor of phototropin kinase in the dark, and light cancels the inhibition through cysteine-FMN adduct formation. LOV1 in contrast acts as an attenuator of photoactivation. Localized to the Golgi apparatus under the induction of blue light. The mRNA is cell-to-cell mobile. |
| TAIR Short Description | phototropin 2 |
| TAIR Aliases | AtPHOT2, NPL1, PHOT2 |
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