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Title | TANDEM BINDING IN CRYSTALS OF A TRP REPRESSOR/OPERATOR HALF- COMPLEX | |
PDB code | 1TRR (PDB summary) | |
NDB code | PDR013 (NDB atlas) | |
Duplex length | 32 base pairs | |
Protein | Tryptophan repressor, Transcription factor, DNA binding domain: Prokaryotic helix-turn-helix |
Model | sigma2 / Å2 | Geometrical parameters |
Plane | 2.452 | |
Straight line (x-axis) | 9.655 | |
Arc | 3.203 | Radius of curvature: r = 168 Å |
Kinked line | 2.912 | Kink angle: alpha = 19° Lengths of straight segments: l1 = 16 bp, l2 = 16 bp |
Double kinked line | 1.070 | Kink angles: alpha1 = 19°, alpha2 = 20° Twist angle: omega = -109° Lengths of straight segments: l1 = 11 bp, l2 = 9 bp, l3 = 12 bp |