2xdc

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Structure of linear gramicidin D obtained using Type I crystals grown in a lipid cubic phase.Structure of linear gramicidin D obtained using Type I crystals grown in a lipid cubic phase.

Structural highlights

2xdc is a 6 chain structure with sequence from Brevibacillus brevis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.7Å
Ligands:, , , , , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Publication Abstract from PubMed

Structure determination of membrane proteins by crystallographic means has been facilitated by crystallization in lipidic mesophases. It has been suggested, however, that this so-called in meso method, as originally implemented, would not apply to small protein targets having </=4 transmembrane crossings. In our study, the hypothesis that the inherent flexibility of the mesophase would enable crystallogenesis of small proteins was tested using a transmembrane pentadecapeptide, linear gramicidin, which produced structure-grade crystals. This result suggests that the in meso method should be considered as a viable means for high-resolution structure determination of integral membrane peptides, many of which are predicted to be coded for in the human genome.

Crystallizing transmembrane peptides in lipidic mesophases.,Hofer N, Aragao D, Caffrey M Biophys J. 2010 Aug 4;99(3):L23-5. PMID:20682243[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. Hofer N, Aragao D, Caffrey M. Crystallizing transmembrane peptides in lipidic mesophases. Biophys J. 2010 Aug 4;99(3):L23-5. PMID:20682243 doi:10.1016/j.bpj.2010.05.011

2xdc, resolution 1.70Å

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OCA