NASA NTRS · 20030061407
Surface Relaxation in Protein Crystals
Abstract
Surface X-ray diffraction measurements were performed on (111) growth faces of crystals of the Cellular iron-storage protein horse spleen ferritin. Crystal Trunkation Rods (CTR) were measured. A fit of the measured profile of the CTR revealed a surface roughness of 48 +/- 4.5 A and a top layer spacing contraction of 3.9 +/- 1.5%. In addition to the peak from the CTR, the rocking curves of the crystals displayed unexpected extra peaks. Multiple-scattering is demonstrated to account for them. Future applications of the method could allow the exploration of hydration effects on the growth of protein crystals.
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Boutet, S., Robinson, I. K., Hu, Z. W., Thomas, B. R., Chernov, A. A.. 2002-01-01. Surface Relaxation in Protein Crystals. https://ntrs.nasa.gov/citations/20030061407
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