Binding of N-acetylglucosamine to chicken egg lysozyme: a powder diffraction study.Von Dreele, R.B.
(2001) Acta Crystallogr.,Sect.D 57: 1836-1842
- PubMed: 11717496
- Primary Citation of Related Structures:  1JA2, 1JA4, 1JA7
- Also Cited By: 1XFT
- PubMed Abstract:
- The First Protein Crystal Structure Determined from Resolution X-Ray Powder Diffraction Data: A Variant of the T3R3 Human Insulin Zinc Complex Produced by Grinding
Von Dreele, R.B.,Stephens, P.W.,Blessing, R.H.,Smith, G.D.
(2000) Acta Crystallogr.,Sect.D 56: 1549
- Combined Rietveld and Stereochemical Restraint Refinement of a Protein Crystal Structure
Von Dreele, R.B.
(1999) J.Appl.Crystallogr. 32: 1084
The binding of N-acetylglucosamine (NAG) to chicken egg lysozyme (E.C. 18.104.22.168) was investigated by high-resolution X-ray powder diffraction at room temperature. NAG was found to bind to lysozyme in a rapid precipitation preparation with 0.05 M NaCl ...
The binding of N-acetylglucosamine (NAG) to chicken egg lysozyme (E.C. 22.214.171.124) was investigated by high-resolution X-ray powder diffraction at room temperature. NAG was found to bind to lysozyme in a rapid precipitation preparation with 0.05 M NaCl buffer pH 6.0, but not 0.05 M NaCl buffer pH 5.0. Binding was indicated by significant and readily apparent changes in the diffraction pattern from that of the apo protein precipitated from the same solvent. The location of NAG bound to lysozyme was easily found from a difference Fourier map generated from structure factors extracted during a preliminary combined Rietveld and stereochemical restraint refinement. Full protein and protein-NAG structures were refined with these techniques (R(wp) = 2.22-2.49%, R(p) = 1.79-1.95%, R(F)(2) = 4.95-6.35%) and revealed a binding mode for NAG which differed from that found in an earlier single-crystal study and probably represents a precursor trapped by rapid precipitation.
Manuel Lujan Jr Neutron Scattering Center, MS H805, Los Alamos National Laboratory, Los Alamos, NM 87545, USA. email@example.com