[Zbrafish] use of dsRed

Chi-Bin Chien chi-bin.chien at neuro.utah.edu
Fri Sep 9 12:09:11 EST 2005

Dear Tom,

Yes, dsRed is not the best available; it is a tetramer (obligate I believe).

mRFP1 is a monomerized version that is widely available; here is the reference:

Campbell RE, Tour O, Palmer AE, Steinbach PA, Baird GS, Zacharias DA, Tsien RY.
A monomeric red fluorescent protein.
Proc Natl Acad Sci U S A. 2002 Jun 11;99(12):7877-82.

and mCherry is an even newer version, not widely available as far as I know:

Shaner NC, Campbell RE, Steinbach PA, Giepmans BN, Palmer AE, Tsien RY.
Improved monomeric red, orange and yellow fluorescent proteins 
derived from Discosoma sp. red fluorescent protein.
Nat Biotechnol. 2004 Dec;22(12):1567-72.

We haven't seen any problem separating GFP and mRFP1.

Chi-Bin Chien

Tom Hall wrote:

>I am thinking about using dsRed in combination with EGFP for my
>transgenics, but I've heard various unsubstantiated reports that it
>isn't very good - takes a long time to express, isn't very bright, and
>that there is a lot of bleed-through into the GFP channel. It's been
>suggested to me that a combination of CFP and YFP is a better bet, but
>of course that would mean I'd be unable to use the multitude of GFP
>lines that exist already.
>If anyone has experience of using dsRed with GFP, or CFP with YFP I'd
>be grateful for some tips.
>Tom Hall
>Currie Lab
>Zbrafish mailing list
>Zbrafish at net.bio.net

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