Suppose this is the designed antisense oligo for Nicotiana tabacum (NtVI A3.6 722L20 5’CTATCTTCTTCTGCACTTCG 3’). I want to check on target and is their any off-target site.When i am doing homology search of this antisense with N.tabacum database then how i can determine that this designed antisense oligo have no any off-target site. Whats are the range of e-value that will be acceptable.