Fluorescent Protein Resource Center

Photoactivatable Proteins

Protein Name Excitation, nm Emission, nm Brightness relative Oligomeric State Reference of Source FP information (pdf)
PA-GFP        monomer*  Patterson et al., Science, 2002, 297, 1873   
before activation  400  515  0.08   
after activation  504  517  0.42   
PS-CFP2        monomer  www.evrogen.com   
before activation  400  470  0.26   
after activation  490  511  0.33   
Dronpa        monomer  www.mblintl.com   
before activation  n/a  n/a  n/a   
after activation  503  518  2.45   
Kaede        tetramer  www.mblintl.com   
before activation  508  518  2.64   
after activation  572  580  0.60   
mEosFP        monomer  Weidemann et al., PNAS, 2004, 101, 15905   
before activation  505  516  1.30   
after activation  569  581  0.70   
Dendra2        monomer  www.evrogen.com   
before activation  490  507  0.45   
after activation  553  573  0.39   
KFP-Red (KFP1)        tetramer  www.evrogen.com   
before activation  n/a  n/a  n/a   
after activation  580  600  0.13   


* This protein still tends to form very weak dimers that should not affect its use for routine tagging. However for some specific applications a single-point mutation may be required to produce a strictly monomeric variant.

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