Helix-Loop-Helix Motifs |
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| Motifs, Helix-Loop-Helix; HLH Motif; Helix Loop Helix Motifs; Helix-Loop-Helix Motif; Motif, HLH; Motif, Helix-Loop-Helix; Motifs, HLH; Motifs, Helix Loop Helix | |
| Recurring supersecondary structures characterized by 20 amino acids folding into two alpha helices connected by a non-helical "loop" segment. They are found in many sequence-specific DNA-BINDING PROTEINS and in CALCIUM-BINDING PROTEINS. | |