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X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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The resolution of a mass spectrometer depends on the efficiency of separating ions with different ion masses. The mass of an atom is approximated to the sum of the masses of protons and neutrons inside, considering the masses of protons and neutrons as equal. However, the masses of the proton (1.6726 × 10−24 g) and neutron (1.6749 × 10−24 g) are not truly equal. There is a minor error in the expression of atomic masses relative to the simplest atom of hydrogen. For...
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Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
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Cryo-electron Microscopy01:28

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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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X-ray Crystallography02:18

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The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
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Updated: Nov 22, 2025

Investigating Protein Sequence-structure-dynamics Relationships with Bio3D-web
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High-performance macromolecular data delivery and visualization for the web. Corrigendum.

David Sehnal1, Radka Svobodová1, Karel Berka2

  • 1CEITEC - Central European Institute of Technology, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic.

Acta Crystallographica. Section D, Structural Biology
|January 6, 2021
PubMed
Summary
This summary is machine-generated.

This study corrects two citations in the 2020 Acta Cryst. D article by Sehnal et al. These corrections ensure accurate referencing for crystallographic research.

Keywords:
corrigendumdata deliverymacromoleculesvisualization

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Area of Science:

  • Crystallography
  • Scientific Publishing

Context:

  • Accuracy in scientific literature is crucial.
  • Proper citation ensures the integrity of research findings.

Purpose:

  • To correct specific errors in citations.
  • To maintain the high standards of scientific record.

Summary:

  • The article by Sehnal et al. (2020) published in Acta Cryst. D has two citations that require correction.
  • These corrections are detailed to ensure readers can access the original sources accurately.

Impact:

  • Ensures the reliability of the scientific record.
  • Facilitates accurate follow-up research and verification.