Structure determination of a 16.8 kDa copper protein at 2.1 A resolution using anomalous scattering data with direct methods.Harvey, I., Hao, Q., Duke, E.M., Ingledew, W.J., Hasnain, S.S.
(1998) Acta Crystallogr.,Sect.D 54: 629-635
- PubMed: 9761859
- DOI: 10.1107/s0907444998005423
- PubMed Abstract:
- Multiple Wavelength Anomalous Diffraction (MAD) Crystal Structure of Rusticyanin: A Highly Oxidizing Cupredoxin with Extreme Acid Stability
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(1992) J.Mol.Biol. 227: 581
- Amino Acid Sequence of the Blue Copper Protein Rusticyanin from Thiobacillus Ferrooxidans
Ronk, M.,Shively, J.E.,Shute, E.A.,Blake II, R.C.
(1991) Biochemistry 30: 9435
- The Purification and Some Properties of Rusticyanin, a Blue Copper Protein Involved in Iron(II) Oxidation from Thiobacillus Ferro-Oxidans
Cox, J.C.,Boxer, D.H.
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- Complete 13C Assignments for Recombinant Cu(I) Rusticyanin. Prediction of Secondary Structure from Patterns of Chemical Shifts
Toy-Palmer, A.,Prytulla, S.,Dyson, H.J.
(1995) FEBS Lett. 365: 35
- Oasis-A Computer Program for Breaking the Phase Ambiguity in Oas or Sir Protein Data
Hao, Q.,Gu, Y.X.,Zheng, C.D.,Fan, H.F.
() TO BE PUBLISHED --: --
- X-Ray Absorption Studies and Homology Modeling Define the Structural Features that Specify the Nature of the Copper Site in Rusticyanin
Grossmann, J.G.,Ingledew, W.J.,Harvey, I.,Strange, R.W.,Hasnain, S.S.
(1995) Biochemistry 34: 8406
- The Respiratory Chain of Thiobacillus Ferrooxidans: The Reduction of Cytochromes by Fe2+ and the Preliminary Characterization of Rusticyanin a Novel "Blue" Copper Protein
Cobley, J.G.,Haddock, B.A.
(1975) FEBS Lett. 60: 29
- Copper Protein Structures
(1991) Adv.Protein Chem. 43: 145
The structure of rusticyanin, an acid-stable copper protein, has been determined at 2.1 A resolution by direct methods combined with the single-wavelength anomalous scattering (SAS) of copper (f" = 3.9 e-) and then conventionally refined (Rcryst = 18 ...
The structure of rusticyanin, an acid-stable copper protein, has been determined at 2.1 A resolution by direct methods combined with the single-wavelength anomalous scattering (SAS) of copper (f" = 3.9 e-) and then conventionally refined (Rcryst = 18.7%, Rfree = 21.9%). This is the largest unknown protein structure (Mr approximately /= 16.8 kDa) to be determined using the SAS and direct-methods approach and demonstrates that by exploiting the anomalous signal at a single wavelength, direct methods can be used to determine phases at typical (approximately 2 A) macromolecular crystallographic resolutions. Extrapolating from the size of the anomalous signal for copper (f" approximately 4 e-), this result suggests that the approach could be used for proteins with molecular weights of up to 33 kDa per Se (f"max++ = 8 e- at the 'white line') and 80 kDa for a Pt derivative (f"max = 19 e- at the 'white line', L3 edge). The method provides a powerful alternative in solving a de novo protein structure without either preparing multiple crystals (i.e. isomorphous heavy-atom derivative plus native crystals) or collecting multi-wavelength anomalous diffraction (MAD) data.
School of Applied Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, England, and CLRC Daresbury Laboratory, Warrington WA4 4AD, England.