primer Tm is too high, how tu get pcr product - help! (Oct/14/2010 )
Check that your extension time is not too long. Excessive extension time can cause smearing. So does excessive cycles.
-donny-
Hopy you are getting good bands in PCR now. Try to clone first in T-Vector your PCR product. Then go for subcloning in the expression vector you wish.
-Prawn-