Photoreactivation of (6-4) photolyase in Dunaliella salina.
Dunaliella salina is a unicellular green alga and possesses two types of photolyase: Class II cyclobutane pyrimidine dimers (CPD) photolyase and (6-4) photolyase. The gene of D. salina (6-4) photolyase is the first one found in unicellular organisms. CPD photolyases have been extensively studied but (6-4) photolyases are less understood. Because of the data observed in this study, D. salina (6-4) photolyase is insensitive to high salinity; whether it can tolerate a higher level of salinity than other (6-4) photolyases needs to be studied further. However, evidence is provided that (6-4) photolyases might be highly conserved among different species, not only in the sequence identity but also in the photorepair mechanism.
Yan Lv
Xue
X
College of Life Sciences, Sichuan University, Chengdu, Sichuan, China.
Rong Qiao
Dai
D
Xiong
Yan
Y
Xu
Hui
H
You
Fang Fang
FF
Cao
Yu
Y
He
Xuan
X
Cao
Yi
Y
D000460:Chlorophyta / Q000201:enzymology*; D004260:DNA Repair; D004255:Deoxyribodipyrimidine Photo-Lyase / Q000302:isolation & purification / Q000378:metabolism*; D004579:Electron Transport; D006863:Hydrogen-Ion Concentration; D018462:Photobiology; D011740:Pyrimidine Dimers / Q000378:metabolism; D054712:Salinity; D014466:Ultraviolet Rays
D011740:Pyrimidine Dimers; C098727:pyrimidine(6-4)pyrimidone photolyase; D004255:Deoxyribodipyrimidine Photo-Lyase