1t3b
X-ray Structure of DsbC from Haemophilus influenzae
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| , resolution 2.5Å | |||||||
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| Gene: | DSBC, XPRA, HI1213 (Haemophilus influenzae) | ||||||
| Activity: | Protein disulfide-isomerase, with EC number 5.3.4.1 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
OverviewOverview
Bacterial DsbC proteins are involved in rearranging or reducing mismatched disulfide bonds folding within the periplasm. The X-ray structure of the enzyme from Haemophilus influenzae has been solved and compared with the known structure of the Escherichia coli protein. The proteins act as V-shaped dimers with a large cleft to accommodate substrate proteins. The dimers are anchored by a small N-terminal domain, but have a flexible linker region which allows the larger C-terminal domain, with its reactive sulfhydryls, to clamp down on substrates. The overall folds are very similar, but the comparison shows a wider range of hinge motions than previously thought. The crystal packing of the H. influenzae protein allows the movement of the N-terminal domain with respect to the C-terminal domain through motions in the flexible hinge, generating high thermal parameters and unusually high anisotropy in the crystallographic data.
About this StructureAbout this Structure
1T3B is a Single protein structure of sequence from Haemophilus influenzae. Full crystallographic information is available from OCA.
ReferenceReference
Structure of DsbC from Haemophilus influenzae., Zhang M, Monzingo AF, Segatori L, Georgiou G, Robertus JD, Acta Crystallogr D Biol Crystallogr. 2004 Sep;60(Pt 9):1512-8. Epub 2004, Aug 26. PMID:15333920
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