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NMR processing:
MDD
NMR assignment:
Backbone:
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MARS
UNIO Match
PINE
Side-chains:
UNIO ATNOS-Ascan
NOEs:
UNIO ATNOS-Candid
UNIO Candid
ASDP
Structure from NMR restraints:
Ab initio:
GeNMR
Cyana
XPLOR-NIH
ASDP
UNIO ATNOS-Candid
UNIO Candid
Fragment-based:
BMRB CS-Rosetta
Rosetta-NMR (Robetta)
Template-based:
GeNMR
I-TASSER
Refinement:
Amber
Structure from chemical shifts:
Fragment-based:
WeNMR CS-Rosetta
BMRB CS-Rosetta
Homology-based:
CS23D
Simshift
Torsion angles from chemical shifts:
Preditor
TALOS
Promega- Proline
Secondary structure from chemical shifts:
CSI (via RCI server)
TALOS
MICS caps, β-turns
d2D
PECAN
Flexibility from chemical shifts:
RCI
Interactions from chemical shifts:
HADDOCK
Chemical shifts re-referencing:
Shiftcor
UNIO Shiftinspector
LACS
CheckShift
RefDB
NMR model quality:
NOEs, other restraints:
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PSVS
RPF scores
iCing
Chemical shifts:
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CheShift2
Vasco
iCing
RDCs:
DC
Anisofit
Pseudocontact shifts:
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Protein geomtery:
Resolution-by-Proxy
PROSESS
What-If
iCing
PSVS
MolProbity
SAVES2 or SAVES4
Vadar
Prosa
ProQ
MetaMQAPII
PSQS
Eval123D
STAN
Ramachandran Plot
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ERRAT
Verify_3D
Harmony
Quality Control Check
NMR spectrum prediction:
FANDAS
MestReS
V-NMR
Flexibility from structure:
Backbone S2
Methyl S2
B-factor
Molecular dynamics:
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Amber
Antechamber
Chemical shifts prediction:
From structure:
Shiftx2
Sparta+
Camshift
CH3shift- Methyl
ArShift- Aromatic
ShiftS
Proshift
PPM
CheShift-2- Cα
From sequence:
Shifty
Camcoil
Poulsen_rc_CS
Disordered proteins:
MAXOCC
Format conversion & validation:
CCPN
From NMR-STAR 3.1
Validate NMR-STAR 3.1
NMR sample preparation:
Protein disorder:
DisMeta
Protein solubility:
camLILA
ccSOL
Camfold
camGroEL
Zyggregator
Isotope labeling:
UPLABEL
Solid-state NMR:
sedNMR


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Default Solution structure of the phosphocarrier protein HPr from Bacillus subtilis by two-di

Solution structure of the phosphocarrier protein HPr from Bacillus subtilis by two-dimensional NMR spectroscopy.

Related Articles Solution structure of the phosphocarrier protein HPr from Bacillus subtilis by two-dimensional NMR spectroscopy.

Protein Sci. 1992 Oct;1(10):1363-76

Authors: Wittekind M, Rajagopal P, Branchini BR, Reizer J, Saier MH, Klevit RE

The solution structure of the phosphocarrier protein, HPr, from Bacillus subtilis has been determined by analysis of two-dimensional (2D) NMR spectra acquired for the unphosphorylated form of the protein. Inverse-detected 2D (1H-15N) heteronuclear multiple quantum correlation nuclear Overhauser effect (HMQC NOESY) and homonuclear Hartmann-Hahn (HOHAHA) spectra utilizing 15N assignments (reported here) as well as previously published 1H assignments were used to identify cross-peaks that are not resolved in 2D homonuclear 1H spectra. Distance constraints derived from NOESY cross-peaks, hydrogen-bonding patterns derived from 1H-2H exchange experiments, and dihedral angle constraints derived from analysis of coupling constants were used for structure calculations using the variable target function algorithm, DIANA. The calculated models were refined by dynamical simulated annealing using the program X-PLOR. The resulting family of structures has a mean backbone rmsd of 0.63 A (N, C alpha, C', O atoms), excluding the segments containing residues 45-59 and 84-88. The structure is comprised of a four-stranded antiparallel beta-sheet with two antiparallel alpha-helices on one side of the sheet. The active-site His 15 residue serves as the N-cap of alpha-helix A, with its N delta 1 atom pointed toward the solvent to accept the phosphoryl group during the phosphotransfer reaction with enzyme I. The existence of a hydrogen bond between the side-chain oxygen atom of Tyr 37 and the amide proton of Ala 56 is suggested, which may account for the observed stabilization of the region that includes the beta-turn comprised of residues 37-40. If the beta alpha beta beta alpha beta (alpha) folding topology of HPr is considered with the peptide chain polarity reversed, the protein fold is identical to that described for another group of beta alpha beta beta alpha beta proteins that include acylphosphatase and the RNA-binding domains of the U1 snRNP A and hnRNP C proteins.

PMID: 1303754 [PubMed - indexed for MEDLINE]



Source: PubMed
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