1lsa
From Proteopedia
THE INFLUENCE OF TEMPERATURE ON LYSOZYME CRYSTALS. STRUCTURE AND DYNAMICS OF PROTEIN AND WATER
Structural highlights
Function[LYSC_CHICK] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.[1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedLysozyme structures at six different temperatures in the range 95-295 K have been determined using X-ray crystallography at a resolution of 1.7 A. The crystals at lower temperatures had a 7.4% decrease in the unit-cell volume. The volume change was discontinuous with the volume being near 238 000 A(3) from 295 to 250 K and about 220 200 A(3) below 180 K. The thermal expansion of the protein has been analyzed and shows anisotropy, which is correlated with local atomic packing and secondary-structure elements. The lysozyme structure at low temperature is nearly the same as that at high temperature, with only small relative translations and rotations of structure elements including a hinge-bending rearrangement of two domains. Because of a considerable increase of lattice disorder at low temperature dynamical analysis of internal motion is difficult. The analysis of structural and dynamical properties of well ordered protein-bound water has been carried out. The influence of temperature on lysozyme crystals. Structure and dynamics of protein and water.,Kurinov IV, Harrison RW Acta Crystallogr D Biol Crystallogr. 1995 Jan 1;51(Pt 1):98-109. PMID:15299341[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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