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Helix-turn-helix


Helix-turn-helix (HTH) bind the major groove of the DNA.
Zinc fingers function as structural platforms for DNA binding.
Leucine zippers function in associating the transcription factors with each other.
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sense of Heart[anatomy of human heart ] [ control of human heart ] [ fish heart ] [ frog and lizard hearts ] [ squid hearts ] Heat receptors Heat transport HeLa cells Helicase Helicobacter pylori[genome] [adaptation to stomach] Helix-turn-helix ...
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α helices have particular significance in DNA binding motifs, including helix-turn-helix motifs, leucine zipper motifs and zinc finger motifs. This is because of the convenient structural fact that the diameter of the α helix is 1.
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A 3-D model of a protein with a homeodomain, a "helix-turn-helix" motif that acts as a transcription factor by binding directly to DNA to turn on other genes.
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A highly conserved family of protein domain sequences 60 amino acids in length found within a large number of transcription factors that can form a helix-turn-helix structure and bind DNA in a sequence-specific manner.
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A "weak" helix-turn-helix (HTH) motif was identified within the protein that may indicate a capacity to bind DNA and, perhaps, a potential role for IrrE in gene regulation.
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