Solution structure of the two N-terminal CCP modules of C4b-binding protein (C4BP) alpha-chain.
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 3D_13C-separated_NOESY | 2.5 mM C4BP12 U-13C, 15N, 20 mM sodium acetate buffer, pH 4.5, 90% H2O, 10% D2O | 90% H2O/10% D2O | 20 mM sodium acetate buffer | 4.5 | 1 atm | 310 | |
| 2 | 3D_15N-separated_NOESY | 2.5 mM C4BP12 U-13C, 15N, 20 mM sodium acetate buffer, pH 4.5, 90% H2O, 10% D2O | 90% H2O/10% D2O | 20 mM sodium acetate buffer | 4.5 | 1 atm | 310 | |
| 3 | NH-IPAP 15N HSQC | 0.70 mM C4BP12 U-13C, 15N, 7.3 mg/ml Pf1 phage, 20 mM sodium acetate buffer, pH 5.5, 90 mM NaCl, 90% H2O, 10% D2O | 90% H2O/10% D2O | 20 mM sodium acetate buffer, 90 mM NaCl | 5.5 | 1 atm | 310 | |
| 4 | NC-HN(a/b-NC'-J) | 0.70 mM C4BP12 U-13C, 15N, 7.3 mg/ml Pf1 phage, 20 mM sodium acetate buffer, pH 5.5, 90 mM NaCl, 90% H2O, 10% D2O | 90% H2O/10% D2O | 20 mM sodium acetate buffer, 90 mM NaCl | 5.5 | 1 atm | 310 | |
| 5 | CC-HN(a/b-COCA-J) | 0.70 mM C4BP12 U-13C, 15N, 7.3 mg/ml Pf1 phage, 20 mM sodium acetate buffer, pH 5.5, 90 mM NaCl, 90% H2O, 10% D2O | 90% H2O/10% D2O | 20 mM sodium acetate buffer, 90 mM NaCl | 5.5 | 1 atm | 310 | |
| 6 | CaHa-2D J-(HNCO)CANH | 0.70 mM C4BP12 U-13C, 15N, 7.3 mg/ml Pf1 phage, 20 mM sodium acetate buffer, pH 5.5, 90 mM NaCl, 90% H2O, 10% D2O | 90% H2O/10% D2O | 20 mM sodium acetate buffer, 90 mM NaCl | 5.5 | 1 atm | 310 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE | 800 |
| 2 | Bruker | AVANCE | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| molecular dynamics simulated annealing | the structures are based on 3032 NOE-derived distance restraints and 219 RDC restraints | CNS |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 40 |
| Representative Model | 1 (closest to the average) |
| Additional NMR Experimental Information | |
|---|---|
| Details | All RDC experiments (i.e. NH-IPAP 15N HSQC,, NC-HN(a/b-NC'-J), CC-HN(a/b-COCA-J), CaHa-2D J-(HNCO)CANH were recorded twice, once in aligned media (Solution Id 2) and once in unaligned media (solution Id 1) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | CNS | 1.1 | Brunger |
| 2 | processing | Azara | 2.7 | Boucher |
| 3 | data analysis | ANSIG | 3.3 | Kraulis |
| 4 | refinement | CNS | 1.1 | Brunger |
