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NMR processing:
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PINE
Side-chains:
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NOEs:
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UNIO Candid
ASDP
Structure from NMR restraints:
Ab initio:
GeNMR
Cyana
XPLOR-NIH
ASDP
UNIO ATNOS-Candid
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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
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Promega- Proline
Secondary structure from chemical shifts:
CSI (via RCI server)
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MICS caps, β-turns
d2D
PECAN
Flexibility from chemical shifts:
RCI
Interactions from chemical shifts:
HADDOCK
Chemical shifts re-referencing:
Shiftcor
UNIO Shiftinspector
LACS
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NMR model quality:
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RDCs:
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Pseudocontact shifts:
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Protein geomtery:
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PSVS
MolProbity
SAVES2 or SAVES4
Vadar
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NMR spectrum prediction:
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Flexibility from structure:
Backbone S2
Methyl S2
B-factor
Molecular dynamics:
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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:
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Default Cucurbit[8]uril and 14-3-3 based binary bivalent supramolecular-protein assembly platform and co-crystal structure

Cucurbit[8]uril and 14-3-3 based binary bivalent supramolecular-protein assembly platform and co-crystal structure


Interactions between proteins frequently employ recognition sequences that engage in multivalent binding events. Dimeric 14-3-3 adapter proteins represent a prominent example, typically binding partner proteins in a phosphorylation-dependent mono- or bivalent manner. Here we describe the development of a cucurbit[8]uril (Q8)-based supramolecular system, which in conjunction with the 14-3-3 protein dimer acts as a binary and bivalent protein assembly platform. We fused the phenylalanine-glycine-glycine (FGG) tripeptide motif to the N-terminus of the 14-3-3-binding epitope of the estrogen receptor ? (ER?), for selective binding to Q8. Q8-induced dimerization of the ER? epitope augmented its affinity towards 14-3-3 via a binary bivalent binding mode. The crystal structure of the Q8-induced ternary complex, a first of its kind, reveals molecular insights into the multiple supramolecular interactions between the protein, peptide and Q8.

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