What question did this study set out to answer?

To determine the three-dimensional atomic structure and electrostatic potential of the outer membrane porin from Rhodobacter capsulatus.

December 13, 1991Science

Molecular Architecture and Electrostatic Properties of a Bacterial Porin

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Authors

MWM.S. WeissHelmholtz-Zentrum Berlin für Materialien und Energie UAUlrich AbeleUniversity of Freiburg JWJ. WeckesserTufts University

Discussion

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Implication

Structural analysis reveals the trimeric beta-barrel architecture and electrostatic properties of bacterial porin, demonstrating how charge distributions govern solute diffusion.

Key Points

To determine the three-dimensional atomic structure and electrostatic potential of the outer membrane porin from Rhodobacter capsulatus.
X-ray crystallography to resolve the high-resolution structure and calcium-binding sites of the integral membrane protein.
Electrostatic potential calculations to evaluate charge distributions across the diffusion channels and membrane surfaces.
The porin forms a trimer of three tightly associated 16-stranded beta barrels that create three separate solute diffusion channels across the outer membrane.
Structural mapping reveals distinct amino acid residue distributions lining the channel interiors and the lipid-facing exterior surfaces.
Calculated electrostatic potentials correlate directly with transport function and successfully predict the precise locations of Ca2+ binding sites.

Cite This Study

Weiss et al. (1991) studied this question.

synapsesocial.com/papers/69d8141305ee2ba81dbef031 https://doi.org/10.1126/science.1721242

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December 13, 1991Science

Molecular Architecture and Electrostatic Properties of a Bacterial Porin

View Full Paper

Ask AI

Bookmark

Authors

MWM.S. WeissHelmholtz-Zentrum Berlin für Materialien und Energie UAUlrich AbeleUniversity of Freiburg JWJ. WeckesserTufts University

Discussion

Member takes

Implication

Structural analysis reveals the trimeric beta-barrel architecture and electrostatic properties of bacterial porin, demonstrating how charge distributions govern solute diffusion.

Key Points

To determine the three-dimensional atomic structure and electrostatic potential of the outer membrane porin from Rhodobacter capsulatus.
X-ray crystallography to resolve the high-resolution structure and calcium-binding sites of the integral membrane protein.
Electrostatic potential calculations to evaluate charge distributions across the diffusion channels and membrane surfaces.
The porin forms a trimer of three tightly associated 16-stranded beta barrels that create three separate solute diffusion channels across the outer membrane.
Structural mapping reveals distinct amino acid residue distributions lining the channel interiors and the lipid-facing exterior surfaces.
Calculated electrostatic potentials correlate directly with transport function and successfully predict the precise locations of Ca2+ binding sites.

Cite This Study

Weiss et al. (1991) studied this question.

synapsesocial.com/papers/69d8141305ee2ba81dbef031 https://doi.org/10.1126/science.1721242

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