Interaction class
Class:  H-Bb H-Mj L-Bb L-Mj 
Description: Conserved protein-DNA contacts are provided by helix(es) (H) with DNA backbone atoms (Bb), helix(es) (H) with the major groove of DNA (Mj), loop(s) (L) with DNA backbone atoms (Bb), loop(s) (L) with the major groove of DNA (Mj).
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SCOP Domain Family Number of structures Number of domains Interaction modes Ax-bend MnG width MnG depth MjG width MjG depth
Zn2/Cys6 DNA-binding domain
20 5  H-Bb H-Mj L-Bb L-Mj 
 H-Bb H-Mj L-Bb L-Mj L-Mn 
 H-Bb L-Bb L-Mj 
 H-Mj L-Bb L-Mj 
 H-Mj L-Bb L-Mj L-Mn 
 L-Bb L-Mj L-Mn 
1.5 (0.8–2.5) 7.4 (4.7–10.9) 4.1 (1.1–5.8) 11.3 (11.1–11.5) 0.6 (-1.2–2.5)
Zinc finger design
9 3  H-Bb H-Mj L-Bb L-Mj 
 H-Bb H-Mj S-Bb L-Bb L-Mj 
 H-Bb H-Mj S-Mj L-Bb L-Mj 
1.1 (1.0–1.3) 6.3 (4.9–7.1) 4.6 (4.5–4.8) 13.2 (12.5–13.8) 5.8 (5.5–6.3)
All SCOP domain families with determined protein-DNA interaction classes
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