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Multiple alignment of the CUB domains in the Xenopus ovochymase proenzyme (ovoCUBs) with those from Drosophila tolloid (P25723), mouse BMP-1 (P98063), pig spermadhesin AQN-1 (P26322), Xenopus oviductin (U81291), and Xenopus hatching enzyme (D89632). Alignment adjustments were made by hand as described by Bork and Beckmann (22). Consensus amino acids are capitalized and in bold when at least 5 of 10 match.
