Letter: Preliminary crystallographic data for Escherichia coli beta-lactamase |
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Authors: | J R Knox P E Zorsky N S Murthy |
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Institution: | Biological Sciences Group and Institute of Material Sciences University of Connecticut Storrs, Conn. 06268, U.S.A. |
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Abstract: | The β-lactamase (penicillinase) from Escherichia coli W3310 has been crystallized from 25% saturated ammonium sulfate solution at pH 6.9. An X-ray examination of the monoclinic crystals shows the space group is C2, with unit cell dimensions , , and β = 98.6°. With Z = 4 and the molecular weight = 22,000 (Melling &; Scott, 1972), the Å3/dalton ratio is 2.98. The crystals are suitable for structure analysis to at least 2.4 Å resolution. |
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