 STEP 1: Offer your sequence to be ‘biobricked’ by direct pasting your DNA or specifying by names of organism, replicon and gene. |
 SETP 2: Give your design constraints for primers, including length, melting temperature, GC-content of each primer and differences of Tm between forward and reverse primers. The primer selection process is powered by primer3. |
 STEP 3: In addition, you can choose to relax design constraints to gain more primer candidates. Besides, you can decide to put prefix or suffix or not by ‘Build Biobrick’ checkbox and specify extra bases before prefix and suffix for good enzyme digestion! |
 STEP 4: Click “SEND” when everything is ready or click “RESET” to set all parameters as default. |
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