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Title | CRYSTAL STRUCTURE OF A MAT-ALPHA2 HOMEODOMAIN-OPERATOR COMPLEX SUGGESTS A GENERAL MODEL FOR HOMEODOMAIN-DNA INTERACTIONS | |
PDB code | 1APL (PDB summary) | |
NDB code | PDT005 (NDB atlas) | |
Duplex length | 20 base pairs | |
Protein | Mating type alpha2, Transcription factor, DNA binding domain: Helix-turn-helix, homeodomain |
Model | sigma2 / Å2 | Geometrical parameters |
Plane | 0.228 | |
Straight line (x-axis) | 1.178 | |
Arc | 0.368 | Radius of curvature: r = 195 Å |
Kinked line | 0.392 | Kink angle: alpha = 10° Lengths of straight segments: l1 = 10 bp, l2 = 10 bp |
Double kinked line | 0.193 | Kink angles: alpha1 = 10°, alpha2 = 9° Twist angle: omega = -94° Lengths of straight segments: l1 = 5 bp, l2 = 6 bp, l3 = 9 bp |