▁than ▁a ▁standard ▁protein - prote in ▁B LA ST . ▁N uc le ot ide ▁ 6 - frame ▁translation - prote in ▁( blast x ) ▁This ▁program ▁comp ares ▁the ▁six - frame ▁concept ual ▁translation ▁products ▁of ▁a ▁nucle ot ide ▁query ▁sequence ▁( both ▁str ands ) ▁against ▁a ▁protein ▁sequence ▁database . ▁N uc le ot ide ▁ 6 - frame ▁translation - n uc le ot ide ▁ 6 - frame ▁translation ▁( tbl ast x ) ▁This ▁program ▁is ▁the ▁slow est ▁of ▁the ▁B LA ST ▁family . ▁It ▁transl ates ▁the ▁query ▁nucle ot ide ▁sequence ▁in ▁all ▁six ▁possible ▁frames ▁and ▁comp ares ▁it ▁against ▁the ▁six - frame ▁transl ations ▁of ▁a ▁nucle ot ide ▁sequence ▁database . ▁The ▁purpose ▁of ▁tbl ast x ▁is ▁to ▁find ▁very ▁distant ▁relationships ▁between ▁nucle ot ide ▁sequences . ▁Prote in - n uc le ot ide ▁ 6 - frame ▁translation ▁( tbl ast n ) ▁This ▁program ▁comp ares ▁a ▁protein ▁query ▁against ▁the ▁all ▁six ▁reading ▁frames ▁of ▁a ▁nucle ot ide ▁sequence ▁database . ▁Lar ge ▁numbers ▁of ▁query ▁sequences ▁( m eg ab last ) ▁When ▁comparing ▁large ▁numbers ▁of ▁input ▁sequences ▁via ▁the ▁command - line ▁B LA ST , ▁" m eg ab last " ▁is ▁much ▁faster ▁than ▁running ▁B LA ST ▁multiple ▁times . ▁It ▁concaten ates ▁many ▁input ▁sequences ▁together ▁to ▁form ▁a ▁large ▁sequence ▁before ▁searching ▁the ▁B LA ST ▁database , ▁then