Evidence map›Paper›PMID 18052145›Full record

ArticleThe journal of physical chemistry. B2007

Crystal polymorphism of protein GB1 examined by solid-state NMR spectroscopy and X-ray diffraction.

Heather L Frericks Schmidt, Lindsay J Sperling, Yi Gui Gao, Benjamin J Wylie, John M Boettcher, Scott R Wilson, Chad M Rienstra

Open access · greenAbstract read
In one paragraph

Article in The journal of physical chemistry. B, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
4.7field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

73 citing papers in PubMed, 135 citations in OpenAlex.

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  6. Carbon-13 Centerband-Only Detection of EXchange with Dynamic Nuclear Polarization.Chemphyschem : a European journal of chemical physics and physical chemistry · 2026
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  10. Magnetic resonance (Gottingen, Germany) · 2025
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  11. Inter-residue through-space scalarMagnetic resonance (Gottingen, Germany) · 2025
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  12. IntegratingJournal of the American Chemical Society · 2024
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  15. Modeling of Cu(II)-based protein spin labels using rotamer libraries.Physical chemistry chemical physics : PCCP · 2024
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  16. Enlarging the scenario of site directedScientific reports · 2023
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  17. 3D-Printable centrifugal devices for biomolecular solid state NMR rotors.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2023
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  18. New experimental evidence for pervasive dynamics in proteins.Protein science : a publication of the Protein Society · 2023
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  19. Review
  20. Article

13 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Heather L Frericks SchmidtDepartment of Chemistry, University of Illinois Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61821, USA.
Lindsay J Sperling
Yi Gui Gao
Benjamin J Wylie
John M Boettcher
Scott R Wilson
Chad M Rienstra
University of Illinois Urbana-Champaign · US

Funding

Structure and Function of Membrane Protein Complexes(RMI)R01GM075937 · NIGMS · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI RIENSTRA, CHAD M · 2005 to 2009
$1.4M
NIGMS NIH HHS R01 GM075937NIGMS NIH HHS R01GM075937
6 · The paper itself

Abstract

The study of micro- or nanocrystalline proteins by magic-angle spinning (MAS) solid-state NMR (SSNMR) gives atomic-resolution insight into structure in cases when single crystals cannot be obtained for diffraction studies. Subtle differences in the local chemical environment around the protein, including the characteristics of the cosolvent and the buffer, determine whether a protein will form single crystals. The impact of these small changes in formulation is also evident in the SSNMR spectra; however, the changes lead only to correspondingly subtle changes in the spectra. Here, we demonstrate that several formulations of GB1 microcrystals yield very high quality SSNMR spectra, although only a subset of conditions enable growth of single crystals. We have characterized these polymorphs by X-ray powder diffraction and assigned the SSNMR spectra. Assignments of the 13C and 15N SSNMR chemical shifts confirm that the backbone structure is conserved, indicative of a common protein fold, but side chain chemical shifts are changed on the surface of the protein, in a manner dependent upon crystal packing and electrostatic interactions with salt in the mother liquor. Our results demonstrate the ability of SSNMR to reveal minor structural differences among crystal polymorphs. This ability has potential practical utility for studying the formulation chemistry of industrial and therapeutic proteins, as well as for deriving fundamental insights into the phenomenon of single-crystal growth.

Indexed as

CrystallizationBacterial ProteinsMagnetic Resonance SpectroscopyProtein ConformationX-Ray DiffractionBacterial Proteins

Identifiers

PMID18052145
PMCPMC2774121
OpenAlexW1986935825

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.