About: Heptad repeat

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The heptad repeat is an example of a structural motif that consists of a repeating pattern of seven amino acids: a b c d e f g H P P H C P C where H represents hydrophobic residues, C represents, typically, charged residues, and P represents polar (and, therefore, hydrophilic) residues. The positions of the heptad repeat are commonly denoted by the lowercase letters a through g. These motifs are the basis for most coiled coils and, in particular, leucine zippers, which have predominantly leucine in the d position of the heptad repeat.

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  • Als Heptadenmuster oder Heptad-Wiederholung (englisch: heptad repeat) bezeichnet man ein Sequenzmotiv, bei dem hydrophobe Aminosäurereste an 1. und 4. Position eines sieben Aminosäuren umfassenden Abschnitts stehen. Das Motiv kann folgendermaßen beschrieben werden: a b c d e f g H: hydrophober Aminosäurerest H P P H C P C P: polarer Aminosäurerest C: elektrisch geladener Aminosäurerest (engl. charged residue) Die einzelnen Aminosäurereste werden mit den Minuskeln von a bis g notiert. Bei Fortführung der Sequenz notiert man von a’ bis g’, a’’ bis g’’ usw. Dieses Motiv ist eine markante Struktur von Coiled-Coils, insbesondere der bZIP-Domäne. Durch die hydrophobe Wechselwirkung dieser Aminosäuren wird die Coiled-Coil-Struktur stabilisiert. (de)
  • The heptad repeat is an example of a structural motif that consists of a repeating pattern of seven amino acids: a b c d e f g H P P H C P C where H represents hydrophobic residues, C represents, typically, charged residues, and P represents polar (and, therefore, hydrophilic) residues. The positions of the heptad repeat are commonly denoted by the lowercase letters a through g. These motifs are the basis for most coiled coils and, in particular, leucine zippers, which have predominantly leucine in the d position of the heptad repeat. A conformational change in a heptad repeat in the SARS-CoV-2 spike protein facilitates entry of the virus into the host cell membrane. (en)
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  • Als Heptadenmuster oder Heptad-Wiederholung (englisch: heptad repeat) bezeichnet man ein Sequenzmotiv, bei dem hydrophobe Aminosäurereste an 1. und 4. Position eines sieben Aminosäuren umfassenden Abschnitts stehen. Das Motiv kann folgendermaßen beschrieben werden: a b c d e f g H: hydrophober Aminosäurerest H P P H C P C P: polarer Aminosäurerest C: elektrisch geladener Aminosäurerest (engl. charged residue) (de)
  • The heptad repeat is an example of a structural motif that consists of a repeating pattern of seven amino acids: a b c d e f g H P P H C P C where H represents hydrophobic residues, C represents, typically, charged residues, and P represents polar (and, therefore, hydrophilic) residues. The positions of the heptad repeat are commonly denoted by the lowercase letters a through g. These motifs are the basis for most coiled coils and, in particular, leucine zippers, which have predominantly leucine in the d position of the heptad repeat. (en)
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  • Heptadenmuster (de)
  • Heptad repeat (en)
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