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NMR processing:
MDD
NMR assignment:
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MARS
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PINE
Side-chains:
UNIO ATNOS-Ascan
NOEs:
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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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Chemical shifts:
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iCing
RDCs:
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Pseudocontact shifts:
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Protein geomtery:
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What-If
iCing
PSVS
MolProbity
SAVES2 or SAVES4
Vadar
Prosa
ProQ
MetaMQAPII
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STAN
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ERRAT
Verify_3D
Harmony
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NMR spectrum prediction:
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MestReS
V-NMR
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:
sedNMR


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Default Identification of the single-stranded DNA binding surface of the transcriptional coac

Identification of the single-stranded DNA binding surface of the transcriptional coactivator PC4 by NMR.

Related Articles Identification of the single-stranded DNA binding surface of the transcriptional coactivator PC4 by NMR.

J Biol Chem. 1999 Feb 5;274(6):3693-9

Authors: Werten S, Wechselberger R, Boelens R, van der Vliet PC, Kaptein R

The C-terminal domain of the eukaryotic transcriptional cofactor PC4 (PC4CTD) is known to bind with nanomolar affinity to single-stranded (ss)DNA. Here, NMR is used to study DNA binding by this domain in more detail. Amide resonance shifts that were observed in a 1H15N-HSQC-monitored titration of 15N-labeled protein with the oligonucleotide dT18 indicate that binding of the nucleic acid occurs by means of two anti-parallel channels that were previously identified in the PC4CTD crystal structure. The beta-sheets and loops that make up these channels exhibit above average flexibility in the absence of ssDNA, which is reflected in higher values of T1rho, reduced heteronuclear nuclear Overhauser effects and faster deuterium exchange rates for the amides in this region. Upon ssDNA binding, this excess flexibility is significantly reduced. The binding of ssDNA by symmetry-related channels reported here provides a structural rationale for the preference of PC4CTD for juxtaposed single-stranded regions (e.g. in heteroduplexes) observed in earlier work.

PMID: 9920920 [PubMed - indexed for MEDLINE]



Source: PubMed
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