SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | TROSY-HN(CO)CACB | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| 2 | TROSY-HNCACB | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| 3 | TROSY-HN(CA)CO | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| 4 | TROSY-HNCO | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| 5 | HCCCONH | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| 6 | TROSY-1H-15N HSQC | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| 7 | TROSY-1H-13C HSQC | 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_1-1, 0.1-0.3 mM [U-13C; U-15N; U-2H] entity_2-2 | 90% H2O/10% D2O | 400 | 6.0 | ambient | 293 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE | 600 |
| 2 | Bruker | AVANCE | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| CS-Rosetta-AbinitioRelax, CS-Rosetta-FloppyTail | The structure of the core regions of H2A(Val27-Leu96) and H2B (Ser38-Lys125) connected by a random coil (Gly)16 poly-glycine linker was modeled by CS-Rosetta-AbinitioRelax protocol.In total 10,000 models were generated and selected the 10 models with the lowest CA-RMSD from the 20 models with the lowest CS-Rosetta energy., After the (Gly)16 poly-glycine linker was removed from each of the 10 selected structures of the H2A-H2B core, the flexible tails of H2A (Gly(-3)-Pro26 and Leu97-Lys129) and H2B (Gly(-3)-Tyr37) were connected by using MODELLER program. Next, for each of the three flexible tails,CS-Rosetta-FloppyTail protocol was used to generate 10,000 models for each of the 10 selected core structures, and selected one model with the lowest kai2 values of chemical shifts. | CS-ROSETTA |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 10000 |
| Conformers Submitted Total Number | 10 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | geometry optimization | CS-ROSETTA | Shen, Vernon, Baker and Bax | |
| 2 | refinement | CS-ROSETTA | Shen, Vernon, Baker and Bax | |
