protein loading control for rat tissues

[Nick Theodorakis]

In <20011213234722.20737.qmail at ww02.jatek.com>, Wen Zheng wrote:
>
>Hi, there:
>   Could anybody tell me what loading control I could use for a Western
>Blot showing protein expression in rat tissue. The Beta-tubulin and
>beta-actin as loading control work very well on cells from rat, but not work
>on tissue (rat heart).
>

Are you trying to compare one heart to another, or comparing heart to 
some other tissue? If the latter, I'm not surprised that beta-actin (a 
non-muscle actin) wouldn't work as a control. Tubulin also has several 
isoforms that vary from tissue to tissue, and some tissues (e.g., brain) 
have much more tubulin than others.

Nick

-- 
Nick Theodorakis
nicholas_theodorakis at urmc.rochester.edu