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- Title
Putative thioredoxin Trx1 from Thermosipho africanus strain TCF52B: expression, purification and structural determination using S-SAD.
- Authors
Sahtout, Naheda; Kuttiyatveetil, Jijin R. A.; Fodje, Michel; Sanders, David A. R.
- Abstract
Thioredoxin is a small ubiquitous protein that plays a role in many biological processes. A putative thioredoxin, Trx1, from Thermosipho africanus strain TCF52B, which has low sequence identity to its closest homologues, was successfully cloned, overexpressed and purified. The protein was crystallized using the microbatch-under-oil technique at 289 K in a variety of conditions; crystals grown in 0.2 M MgCl2, 0.1 M bis-tris pH 6.5, 25%( w/ v) PEG 3350, which grew as irregular trapezoids to maximum dimensions of 1.2 × 1.5 × 0.80 mm, were used for sulfur single-wavelength anomalous dispersion analysis. The anomalous sulfur signal could be detected to 2.83 Å resolution using synchrotron radiation on the 08B1-1 beamline at the Canadian Light Source. The crystals belonged to space group P212121, with unit-cell parameters a = 40.6, b = 41.5, c = 56.4 Å, α = β = γ = 90.0°.
- Subjects
THIOREDOXIN; BACTERIAL protein structure; PROTEIN expression
- Publication
Acta Crystallographica: Section F, Structural Biology Communications, 2016, Vol 72, Issue 6, p443
- ISSN
2053-230X
- Publication type
Article
- DOI
10.1107/S2053230X16007214