source of high quality streptavidin

John Altman altman at
Tue Feb 13 17:26:42 EST 1996

We've been screening streptavidin and deglycosylated avidin
(unlabeled) preparations from a number of suppliers and to
our dismay, we've found them quite heterogeneous when
analyzed on gel filtration columns.  Does anyone have a
favorite supplier of high quality and homogeneous streptavidin
(or deglycosylated avidin)?  I'm only interested if you 
happen to know that the material is in good shape.


John Altman
Beckman Center B-219
Stanford University
Stanford, CA 94305-5428
altman at

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