Astacins, serralysins, snake venom and matrix metalloproteinases exhibit identical zinc-binding environments (HEXXHXXGXXH and Met-turn) and topologies and should be grouped into a common family, the ‘metzincins’ - Bode, W; Gomis-Rüth, F X; Stöckler, W (FEBS Lett, 1993)
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