About Products Protein Database Contact

bluF

Gene
bluF
Protein
Blue light- and temperature-regulated antirepressor BluF
Organism
Escherichia coli (strain K12)
Length
403 amino acids
Function
Binds to and releases the BluR repressor from its bound DNA target in a blue light-dependent (470 nm) fashion. A shift to low temperature also triggers a BluF-mediated relief of repression by BluR, suggesting BluF may serve as a thermometer. Blue light may act to increase the affinity of BluF for BluR, allowing it to be released from its operator. The protein has a reversible photocycle, and undergoes structural changes, probably in the EAL domain, in response to light.
Mass
45.295 kDa
Sequence
MLTTLIYRSHIRDDEPVKKIEEMVSIANRRNMQSDVTGILLFNGSHFFQLLEGPEEQVKMIYRAICQDPRHYNIVELLCDYAPARRFGKAGMELFDLRLHERDDVLQAVFDKGTSKFQLTYDDRALQFFRTFVLATEQSTYFEIPAEDSWLFIADGSDKELDSCALSPTINDHFAFHPIVDPLSRRIIAFEAIVQKNEDSPSAIAVGQRKDGEIYTADLKSKALAFTMAHALELGDKMISINLLPMTLVNEPDAVSFLLNEIKANALVPEQIIVEFTESEVISRFDEFAEAIKSLKAAGISVAIDHFGAGFAGLLLLSRFQPDRIKISQELITNVHKSGPRQAIIQAIIKCCTSLEIQVSAMGVATPEEWMWLESAGIEMFQGDLFAKAKLNGIPSIAWPEKK