why BSA is need ed in some resriction enzymes reaction

Peter pxpst2 at vms.cis.pitt.delet.edu
Fri Oct 10 08:28:26 EST 1997

In article <61jvko$d1g at news.cuny.edu>, kang at msvax.mssm.edu wrote:

.> I think BSA works in at least following 2 ways.
.> 1. Block the binding of RE onto the plastic surface
.> 2. Block the digestion of enzyme by protease
.> 3. binds and cleans out contaminated SDS in the soln.
.> --- and maybe others also -------

BSA can also act as High Molcular PEGS (>6000) do.  It lowers the
hydrophobicity of the solution.  Some reactions especially ones that occur
at a membrane surface involve proteins that have hydrophobic 
regions/reaction centers which are stabilized by hydrophobic solutions. 
An example of this is clotting Factor Xa.


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