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Phage ABA sandwich domain This domain is found in a prophage protein BC1872 found in B. cereus. The domain forms a three-layer beta/alpha/beta sandwich. Three alpha-helices, alpha1, alpha2, and alpha3, are sandwiched on one side by three-stranded antiparallel beta-sheet (beta3, beta4, and beta5) and on the other by a beta-hairpin (beta1 and beta2).
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