The protein-oligo conjugation kit is to be used with an HPLC-purified oligo that has been amine modified. If you are doing an amine conjugation to your 200 bp oligo, the purification is crucial. You will need a significant number of nmol of oligo to perform a successful conjugation. You can work with our kit and you might have good success. However, as this strategy is outside our testing conditions, we cannot guarantee that you will have success with this product.