▁post - analy zes ▁the ▁search ▁results ▁to ▁g lean ▁individual ▁align ments ▁and ▁statistical ▁values . ▁ ▁Of ▁these ▁programs , ▁ ▁because ▁they ▁use ▁direct ▁compar isons , ▁and ▁do ▁not ▁require ▁transl ations . ▁However , ▁since ▁protein ▁sequences ▁are ▁better ▁conser ved ▁evolution arily ▁than ▁nucle ot ide ▁sequences , ▁t B LA ST n , ▁t B LA ST x , ▁and ▁B LA ST x , ▁produce ▁more ▁reliable ▁and ▁accurate ▁results ▁when ▁dealing ▁with ▁coding ▁DNA . ▁They ▁also ▁enable ▁one ▁to ▁be ▁able ▁to ▁directly ▁see ▁the ▁function ▁of ▁the ▁protein ▁sequence , ▁since ▁by ▁transl ating ▁the ▁sequence ▁of ▁interest ▁before ▁searching ▁often ▁gives ▁you ▁annot ated ▁protein ▁hits . ▁ ▁Altern ative ▁versions ▁▁ ▁A ▁version ▁designed ▁for ▁comparing ▁large ▁genom es ▁or ▁DNA ▁is ▁B LA ST Z . ▁ ▁CS - B LA ST ▁( Context - Spec ific ▁B LA ST ) ▁is ▁an ▁extended ▁version ▁of ▁B LA ST ▁for ▁searching ▁protein ▁sequences ▁that ▁finds ▁twice ▁as ▁many ▁rem ot ely ▁related ▁sequences ▁as ▁B LA ST ▁at ▁the ▁same ▁speed ▁and ▁error ▁rate . ▁In ▁CS - B LA ST , ▁the ▁mut ation ▁prob abilities ▁between ▁am ino ▁ac ids ▁depend ▁not ▁only ▁on ▁the ▁single ▁am ino ▁acid , ▁as ▁in ▁B LA ST , ▁but ▁also ▁on ▁its ▁local ▁sequence ▁context . ▁Washington ▁University ▁produced ▁an ▁alternative ▁version ▁of ▁NC BI ▁B LA ST , ▁called ▁W U - B LA ST . ▁The ▁rights