1NA3
Design of Stable alpha-Helical Arrays from an Idealized TPR Motif
- PDB DOI: https://doi.org/10.2210/pdb1NA3/pdb
- Classification: DE NOVO PROTEIN
- Organism(s): unidentified
- Expression System: Escherichia coli
- Mutation(s): No 
- Deposited: 2002-11-26 Released: 2003-06-03 
Experimental Data Snapshot
- Method: X-RAY DIFFRACTION
- Resolution: 1.55 Å
- R-Value Free: 0.207 
- R-Value Work: 0.178 
- R-Value Observed: 0.181 
wwPDB Validation   3D Report Full Report
This is version 1.4 of the entry. See complete history. 
Macromolecules
Find similar proteins by:
(by identity cutoff) | 3D Structure
Entity ID: 1 | |||||
---|---|---|---|---|---|
Molecule | Chains | Sequence Length | Organism | Details | Image |
designed protein CTPR2 | 91 | unidentified | Mutation(s): 0  | ||
Entity Groups   | |||||
Sequence Clusters | 30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity | ||||
Sequence AnnotationsExpand | |||||
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Small Molecules
Ligands 3 Unique | |||||
---|---|---|---|---|---|
ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
IPT Query on IPT | D [auth A], G [auth B] | 1-methylethyl 1-thio-beta-D-galactopyranoside C9 H18 O5 S BPHPUYQFMNQIOC-NXRLNHOXSA-N | |||
TRS Query on TRS | C [auth A] | 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O | |||
MG Query on MG | E [auth B], F [auth B] | MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N |
Experimental Data & Validation
Experimental Data
- Method: X-RAY DIFFRACTION
- Resolution: 1.55 Å
- R-Value Free: 0.207 
- R-Value Work: 0.178 
- R-Value Observed: 0.181 
- Space Group: P 21 21 21
Unit Cell:
Length ( Å ) | Angle ( ˚ ) |
---|---|
a = 44.986 | α = 90 |
b = 54.941 | β = 90 |
c = 66.938 | γ = 90 |
Software Name | Purpose |
---|---|
HKL-2000 | data collection |
SCALEPACK | data scaling |
AMoRE | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
Entry History 
Deposition Data
- Released Date: 2003-06-03  Deposition Author(s): Main, E., Xiong, Y., Cocco, M., D'Andrea, L., Regan, L.
Revision History (Full details and data files)
- Version 1.0: 2003-06-03
Type: Initial release - Version 1.1: 2008-04-28
Changes: Version format compliance - Version 1.2: 2011-07-13
Changes: Version format compliance - Version 1.3: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Data collection, Derived calculations, Structure summary - Version 1.4: 2024-02-14
Changes: Data collection, Database references, Structure summary