Experiment: 1N02

Solution Structure of a Circular-Permuted Variant of the Potent HIV-inactivating Protein Cyanovirin-N

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	1H-15N HSQC				6.0		300
2	1H-13C HMQC				6.0		300
3	HNHA				6.0		300
4	HCCH-TOCSY				6.0		300
5	(H)C(CCO)NH-TOCSY				6.0		300
6	NOESY				6.0		300
7	4D 13C/13C separated NOE HNHB				6.0		300
8	2D HN(CO)CG				6.0		300
9	HNCG				6.0		300

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX500	500
2	Bruker	DRX600	600
3	Bruker	DMX750	750
4	Bruker	DMX800	800

NMR Refinement
Method	Details	Software
for dyana, Standard target function-simulated annealing protocol. For CNS, Simulated-annealing in Cartesian space		DYANA

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number	26
Representative Model	1 (minimized average structure)

Additional NMR Experimental Information
Details	The minimized average structure is model 1. Models 2-26 are the the final 25 conformer ensemble. DYANA and CNS were used for refinement. VIRTUALLY COMPLETE RESONANCE ASSIGNMENTS WERE REPORTED I (2001) J.Biom.NMR, 19: 289-90; http://www.bmrb.wisc.edu. Stereo-specific assignments for all the methyl groups of of the eight Leu residues and for the alpha-methylene pr eight Gly, 46 beta-methylene protons and the gamma-methy of the seven Ile were available. In total, 1879 experim were employed, representing ~19 constraints per residue. structures was first calculated with DYANA, based on 114 92 hydrogen bond distances and 193 dihedral angles. Ref values yielded an esemble of 50 structures exhibiting at 0.26+/-0.06 A and 0.64+/-0.08A with respect to the mean backbone (N,CA,C') and all heavy atoms, respectively, an 0.81+/-0.10A^2. This initial ensemble of structures was residual dipolar couplings (80) and chemical shifts (291 programs CNS. Overall, excellent agreement with the exp good covalent geometry was maintained throughout. The f was selected and are presented here as MODELS2-26, and a mean structure of this ensemble is presented here as MOD.

Additional NMR Experimental Information

Details

The minimized average structure is model 1. Models 2-26 are the the final 25 conformer ensemble. DYANA and CNS were used for refinement. VIRTUALLY COMPLETE RESONANCE ASSIGNMENTS WERE REPORTED I (2001) J.Biom.NMR, 19: 289-90; http://www.bmrb.wisc.edu. Stereo-specific assignments for all the methyl groups of of the eight Leu residues and for the alpha-methylene pr eight Gly, 46 beta-methylene protons and the gamma-methy of the seven Ile were available. In total, 1879 experim were employed, representing ~19 constraints per residue. structures was first calculated with DYANA, based on 114 92 hydrogen bond distances and 193 dihedral angles. Ref values yielded an esemble of 50 structures exhibiting at 0.26+/-0.06 A and 0.64+/-0.08A with respect to the mean backbone (N,CA,C') and all heavy atoms, respectively, an 0.81+/-0.10A^2. This initial ensemble of structures was residual dipolar couplings (80) and chemical shifts (291 programs CNS. Overall, excellent agreement with the exp good covalent geometry was maintained throughout. The f was selected and are presented here as MODELS2-26, and a mean structure of this ensemble is presented here as MOD.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	DYANA		Guntert, Mumenthaler, Wuthrich
2	structure solution	DYANA
3	structure solution	CNS

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1N02 | pdb_00001n02

Solution Structure of a Circular-Permuted Variant of the Potent HIV-inactivating Protein Cyanovirin-N