Physics:Multi-wavelength anomalous dispersion
From HandWiki
Multi-wavelength anomalous diffraction (sometimes Multi-wavelength anomalous dispersion; abbreviated MAD) is a technique used in X-ray crystallography that facilitates the determination of the three-dimensional structure of biological macromolecules (e.g. DNA, drug receptors) via solution of the phase problem.[1] MAD was developed by Wayne Hendrickson while working as a postdoctoral researcher under Jerome Karle at the United States Naval Research Laboratory.[2] The mathematics upon which MAD (and progenitor Single wavelength anomalous dispersion) were based were developed by Jerome Karle, work for which he was awarded the 1985 Nobel Prize in Chemistry (along with Herbert Hauptman).
See also
- Single wavelength anomalous dispersion (SAD)
- Multiple isomorphous replacement (MIR)
- Anomalous scattering
- Anomalous X-ray scattering
- Patterson map
References
- ↑ "Phase determination from multiwavelength anomalous diffraction measurements". Methods in Enzymology 276: 494–523. 1997. doi:10.1016/S0076-6879(97)76074-9. ISBN 978-0-12-182177-7. PMID 27799111. https://archive.org/details/macromolecularcr0000unse/page/494.
- ↑ Hendrickson WA (1985). "Analysis of Protein Structure from Diffraction Measurement at Multiple Wavelengths". Transactions of the ACA 21.
Further reading
- Hendrickson WA (1985). "Analysis of Protein Structure from Diffraction Measurement at Multiple Wavelengths". Transactions of the ACA 21.
- Karle J (1980). "Some Developments in Anomalous Dispersion for the Structural Investigation of Macromolecular Systems in Biology". International Journal of Quantum Chemistry: Quantum Biology Symposium 7: 357–367. doi:10.1002/qua.560180734.
- Karle J (1989). "Linear Algebraic Analyses of Structures with One Predominant Type of Anomalous Scatterer". Acta Crystallographica A 45 (4): 303–307. doi:10.1107/s0108767388013042. PMID 2559755.
- "A Probability Representation for Phase Information from Multiwavelength Anomalous Dispersion". Acta Crystallographica A 46 (7): 537–540. 1990. doi:10.1107/s0108767390002379. PMID 2206480.
- Terwilliger TC (1994). "MAD Phasing: Bayesian Estimates of FA". Acta Crystallographica D 50 (Pt 1): 11–16. doi:10.1107/s0907444993008224. PMID 15299471.
- Terwilliger TC (1994). "MAD Phasing: Treatment of Dispersive Differences as Isomorphous Replacement Information". Acta Crystallographica D 50 (Pt 1): 17–23. doi:10.1107/s0907444993008236. PMID 15299472.
- "The Multiwavelength Anomalous Solvent Contrast (MASC) Method in Macrocolecular Crystallography". Journal of Synchrotron Radiation 2 (Pt 1): 36–48. 1995. doi:10.1107/S0909049594006680. PMID 16714785.
- Maximum-Likelihood Heavy-Atom Parameter Refinement for Multiple Isomorphous Replacement and Multiwavelength Anomalous Diffraction Methods. Methods in Enzymology. 276. 1997. pp. 472–494. doi:10.1016/S0076-6879(97)76073-7. ISBN 978-0-12-182177-7. https://archive.org/details/macromolecularcr0000unse/page/472.
- Phase Determination from Multiwavelength Anomalous Diffraction Measurements. Methods in Enzymology. 276. 1997. pp. 494–523. doi:10.1016/S0076-6879(97)76074-9. ISBN 978-0-12-182177-7. https://archive.org/details/macromolecularcr0000unse/page/494.
- "A General Phasing Algorithm for Multiple MAD and MIR Data". Acta Crystallographica D 54 (2): 159–174. 1998. doi:10.1107/s0907444997010469. PMID 9761882.
- "Phase determination by multiple-wavelength X-ray diffraction: crystal structure of a basic blue copper protein from cucumbers". Science 241 (4867): 806–811. 1989. doi:10.1126/science.3406739. PMID 3406739. Bibcode: 1988Sci...241..806G.
External links
- MAD phasing — an in depth tutorial with examples, illustrations, and references.
- HHMI Bio for Wayne Hendrickson
- Wayne Hendrickson Home Page
- Hendrickson Laboratory Summary of Research
- Jerome Karl Nobel Biography
- NRL Recognition of Nobel Prize
Computer programs
- The SSRL Absorption Package — "A suite of programs for calculating x-ray absorption, reflection and diffraction performance for a variety of materials at arbitrary wavelengths". Review of Scientific Instruments 63 (1): 850. 1992. doi:10.1063/1.1142625. Bibcode: 1992RScI...63..850B. https://zenodo.org/record/1231838.
- CHOOCH — "CHOOCH: a program for deriving anomalous-scattering factors from X-ray fluorescence spectra". Journal of Applied Crystallography 34: 82–86. 2001. doi:10.1107/S0021889800014655.
- Shake-and-Bake (SnB) — "The use of Snb to determine an anomalous scattering substructure". Acta Crystallographica D 54 (Pt 5): 799–804. 1998. doi:10.1107/S0907444997018805. PMID 9757093.
- SHELX — Sheldrick GM (1998). "SHELX: applications to macromolecules". in S Fortier. Direct methods for solving macromolecular structures. Dordrecht: Kluwer Academic Publishers. pp. 401–411. ISBN 0-7923-4949-0.
Tutorials and examples
- Evans, Gwyndaf (October 1994). "The method of Multiple wavelength Anomalous Diffraction using Synchrotron Radiation at optimal X-ray energies: Application to Protein Crystallography". PhD Thesis. University of Warwick. http://www.gwyndafevans.co.uk/thesis-html/thesis.html.
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