Overview:

RFP or red fluorescent protein from sea anemone Entacmaea quadricolor is a member of the green florescent protein family and is extensively used as a tag and reporter protein in molecular and cellular biology. RFP has a molecular weight of approximately 29 kDa and an excitation and emission maxima at 559 and 611 nm (1). RFP fluoresces over a wide pH range (4-10) with high quantum yield. Like other anthozoan fluorescent proteins, RFP forms tetramers at physiological concentrations.

References:

1. Wiedenmann, J . et al: Red fluorescent protein eqFP611 and its genetically engineered dimeric variants. J Biomed Opt. 2005 Jan-Feb;10(1):14003..