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Publication Abstract from PubMed

The structures of orthorhombic lysozyme grown at basic pH and its low-humidity variant have been solved and refined at 1.9 and 2.0 A resolution, respectively. A comparison of the native structure with those of crystals grown at acidic pH does not show any systematic pH-dependent difference in the molecular geometry. The conformations, mutual orientation and interactions of the catalytic residues Glu35 and Asp52 also remain unchanged. However, comparison between the native and low-humidity forms in the orthorhombic form show that the changes in molecular geometry which accompany the water-mediated transformation to the low-humidity form are more pronounced in the C-terminal residues than in the other regions of the molecule. During the transformation from the native to the low-humidity form, the locations of only about half the water molecules in the hydration shell remain unchanged, but the hydration shell as a whole moves along with the protein molecule.

Structures of orthorhombic lysozyme grown at basic pH and its low-humidity variant.,Sukumar N, Biswal BK, Vijayan M Acta Crystallogr D Biol Crystallogr. 1999 Apr;55(Pt 4):934-7. PMID:10089340^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.