Outer Membrane Protein GOuter Membrane Protein G

Structural highlights

2jqy is a 1 chain structure with sequence from Escherichia coli. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

OMPG_ECOLI Forms channels functionally larger than those of classical porins.[1] May act as a regulator of the RCS-phosphorelay signal transduction pathway.[2]

Publication Abstract from PubMed

The bacterial outer membrane protein G (OmpG), a monomeric pH-gated porin, was overexpressed in Escherichia coli and refolded in beta-octyl glucoside micelles. After transfer into dodecylphosphocholine micelles, the solution structure of OmpG was determined by solution NMR spectroscopy at pH 6.3. Complete backbone assignments were obtained for 234 of 280 residues based on CA, CB, and CO connection pathways determined from a series of TROSY-based 3D experiments at 800 MHz. The global fold of the 14-stranded beta-barrel was determined based on 133 long-range NOEs observed between neighboring strands and local chemical shift and NOE information. The structure of the barrel is very similar to previous crystal structures, but the loops of the solution structure are quite flexible.

Structure of outer membrane protein G by solution NMR spectroscopy.,Liang B, Tamm LK Proc Natl Acad Sci U S A. 2007 Oct 9;104(41):16140-5. Epub 2007 Oct 2. PMID:17911261[3]

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

See Also

References

  1. Chen MH, Takeda S, Yamada H, Ishii Y, Yamashino T, Mizuno T. Characterization of the RcsC-->YojN-->RcsB phosphorelay signaling pathway involved in capsular synthesis in Escherichia coli. Biosci Biotechnol Biochem. 2001 Oct;65(10):2364-7. PMID:11758943
  2. Chen MH, Takeda S, Yamada H, Ishii Y, Yamashino T, Mizuno T. Characterization of the RcsC-->YojN-->RcsB phosphorelay signaling pathway involved in capsular synthesis in Escherichia coli. Biosci Biotechnol Biochem. 2001 Oct;65(10):2364-7. PMID:11758943
  3. Liang B, Tamm LK. Structure of outer membrane protein G by solution NMR spectroscopy. Proc Natl Acad Sci U S A. 2007 Oct 9;104(41):16140-5. Epub 2007 Oct 2. PMID:17911261
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