Ionic scattering factors of atoms that compose biological molecules

Koji Yonekura, Rei Matsuoka, Yoshiki Yamashita, Tsutomu Yamane, Mitsunori Ikeguchi, Akinori Kidera, Saori Maki-Yonekura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Ionic scattering factors of atoms that compose biological molecules have been computed by the multi-configuration Dirac-Fock method. These ions are chemically unstable and their scattering factors had not been reported except for O-. Yet these factors are required for the estimation of partial charges in protein molecules and nucleic acids. The electron scattering factors of these ions are particularly important as the electron scattering curves vary considerably between neutral and charged atoms in the spatial-resolution range explored in structural biology. The calculated X-ray and electron scattering factors have then been parameterized for the major scattering curve models used in X-ray and electron protein crystallography and single-particle cryo-EM. The X-ray and electron scattering factors and the fitting parameters are presented for future reference.

Original languageEnglish
Pages (from-to)348-353
Number of pages6
JournalIUCrJ
Volume5
DOIs
Publication statusPublished - 2018
Externally publishedYes

Keywords

  • X-ray crystallography
  • electron crystallography
  • form factors
  • imaging
  • single-particle cryo-EM
  • structure determination
  • structure refinement

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Ionic scattering factors of atoms that compose biological molecules'. Together they form a unique fingerprint.

Cite this