Protein
Sensor protein SphS
Organism
Synechococcus elongatus (strain PCC 7942)
Function
Member of the two-component regulatory system SphR/SphS. Sensory kinase. Is involved in inducible production of alkaline phosphatase in response to phosphate limitation as it is directly involved in the regulation of phoA transcription in response to phosphate limitation. SphS functions as a protein kinase that phosphorylates SphR.
Sequence
MAAWEFALGLLTASLWRWARKWRSPVKVKPMLAAVSSLEPQLEQITTDLRDRDRLLEDLPVSFLLLDADNLVLEANRSARVLLALPPEDYCRPLLEVVRSYELDRLVARCRAANAPQTDRWTLTPVNPDPLQVVPQTPRPVQGQAIPLSNGQIGVLIEDRQELVDLAQQRNRWVSDVAHELKTPLTSIRLLAEALRDRLQDEPQVWVDRLLGETQRLGQLVQDLLELSRLEQGPSGLQKLEAVDLVALLTSVRNSLEPLAEPLRLGWAYQGPEQGFVRGDRQRLFRLWLNLVDNAIRHSPSGGCLYVELRQRGDTWICDLYDDGPGFADADLPYLFERFYRGDPSRVRPAAASSSSPGSGLGLAIARQVVEAHQGRISARNHPVTGGAWLRVQLPQEPSLTPALKIGTGRRSG