anti-selenocysteine antibody?

[Juergen Oberstrass]

Hi researchers,

I want to knock out a selenocysteine protein in Dictyostelium.
Unfortunately the detection of selenoproteins via incorporation of
radioactive selenium is very difficult in our lab.
So I want to try to verify the successful knock out with an antibody. Does
anybody know if antibodies against selenocysteine exist and could give me
the source?

TIA Juergen

PS. I tried already to get information through the antibody resource
homepage without success.