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Title | DNA RECOGNITION BY BETA-SHEETS IN THE ARC REPRESSOR- OPERATOR CRYSTAL STRUCTURE | |
PDB code | 1PAR (PDB summary) | |
NDB code | PDR012 (NDB atlas) | |
Duplex length | 21 base pairs | |
Protein | Arc repressor bacteriophage P22, Transcription factor, DNA binding domain: Met repressor beta-sheet |
Model | sigma2 / Å2 | Geometrical parameters |
Plane | 0.229 | |
Straight line (x-axis) | 7.738 | |
Arc | 0.504 | Radius of curvature: r = 78 Å |
Kinked line | 0.585 | Kink angle: alpha = 27° Lengths of straight segments: l1 = 10 bp, l2 = 11 bp |
Double kinked line | 0.489 | Kink angles: alpha1 = 22°, alpha2 = 11° Twist angle: omega = -30° Lengths of straight segments: l1 = 8 bp, l2 = 6 bp, l3 = 7 bp |