store lyophilized/reconstituted at -20°C, once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes.
G4 (Chlorophyll synthase) is an enzyme which performs estrification of chlorophyllide (a and b), which is the last step of chlorophyll biosynthesis. Alternative names: polyprenyl transferase, protein G4.