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- Beta_helix abstract "A beta helix is a protein structure formed by the association of parallel beta strands in a helical pattern with either two or three faces. The beta helix is a type of solenoid protein domain. The structure is stabilized by inter-strand hydrogen bonds, protein-protein interactions, and sometimes bound metal ions. Both left- and right-handed beta helices have been identified.The first beta-helix was observed in the enzyme pectate lyase, which contains a seven-turn helix that reaches 34 Å (3.4 nm) long. The P22 phage tailspike protein, a component of the P22 bacteriophage, has 13 turns and in its assembled homotrimer is 200 Å (20 nm) in length. Its interior is close-packed with no central pore and contains both hydrophobic residues and charged residues neutralized by salt bridges.Both pectate lyase and P22 tailspike protein contain right-handed helices; left-handed versions have been observed in enzymes such as UDP-N-acetylglucosamine acyltransferase and archaeal carbonic anhydrase. Other proteins that contain beta helices include the antifreeze proteins from the beetle Tenebrio molitor (right-handed) and from the spruce budworm, Choristoneura fumiferana (left-handed), where regularly spaced threonines on the β-helices bind to the surface of ice crystals and inhibit their growth.Beta helices can associate with each other effectively, either face-to-face (mating the faces of their triangular prisms) or end-to-end (forming hydrogen bonds). Hence, β-helices can be used as \"tags\" to induce other proteins to associate, similar to coiled coil segments.Members of the Pentapeptide repeat family have been shown to possess a quadrilateral beta-helix structure.".
- Beta_helix thumbnail 1m8n_Choristoneura_fumiferana.png?width=300.
- Beta_helix wikiPageExternalLink scop.b.c.bbf.html.
- Beta_helix wikiPageExternalLink scop.b.c.bbg.html.
- Beta_helix wikiPageExternalLink 2.160.
- Beta_helix wikiPageID "5177332".
- Beta_helix wikiPageLength "5011".
- Beta_helix wikiPageOutDegree "28".
- Beta_helix wikiPageRevisionID "705858579".
- Beta_helix wikiPageWikiLink Antifreeze.
- Beta_helix wikiPageWikiLink Bacteriophage.
- Beta_helix wikiPageWikiLink Beta_sheet.
- Beta_helix wikiPageWikiLink Carbonic_anhydrase.
- Beta_helix wikiPageWikiLink Category:Helices.
- Beta_helix wikiPageWikiLink Category:Protein_folds.
- Beta_helix wikiPageWikiLink Category:Protein_structural_motifs.
- Beta_helix wikiPageWikiLink Choristoneura_fumiferana.
- Beta_helix wikiPageWikiLink Coiled_coil.
- Beta_helix wikiPageWikiLink Enterobacteria_phage_P22.
- Beta_helix wikiPageWikiLink Enzyme.
- Beta_helix wikiPageWikiLink Hydrogen_bond.
- Beta_helix wikiPageWikiLink Ice.
- Beta_helix wikiPageWikiLink Ion.
- Beta_helix wikiPageWikiLink Mealworm.
- Beta_helix wikiPageWikiLink Nanometre.
- Beta_helix wikiPageWikiLink Noel_T._Keen.
- Beta_helix wikiPageWikiLink Pectate_lyase.
- Beta_helix wikiPageWikiLink Pentapeptide_repeat.
- Beta_helix wikiPageWikiLink Protein.
- Beta_helix wikiPageWikiLink Protein_trimer.
- Beta_helix wikiPageWikiLink Protein–protein_interaction.
- Beta_helix wikiPageWikiLink Salt_bridge.
- Beta_helix wikiPageWikiLink Solenoid_protein_domain.
- Beta_helix wikiPageWikiLink Threonine.
- Beta_helix wikiPageWikiLink UDP-N-acetylglucosamine_acyltransferase.
- Beta_helix wikiPageWikiLink File:1ezg_Tenebrio_molitor.png.
- Beta_helix wikiPageWikiLink File:1m8n_Choristoneura_fumiferana.png.
- Beta_helix wikiPageWikiLinkText "Beta helix".
- Beta_helix wikiPageWikiLinkText "beta helix".
- Beta_helix wikiPageWikiLinkText "beta-helices".
- Beta_helix wikiPageWikiLinkText "β helix".
- Beta_helix wikiPageWikiLinkText "β-helical".
- Beta_helix wikiPageWikiLinkText "β-helices".
- Beta_helix wikiPageWikiLinkText "β-helix".
- Beta_helix wikiPageUsesTemplate Template:Protein_secondary_structure.
- Beta_helix wikiPageUsesTemplate Template:Reflist.
- Beta_helix subject Category:Helices.
- Beta_helix subject Category:Protein_folds.
- Beta_helix subject Category:Protein_structural_motifs.
- Beta_helix hypernym Structure.
- Beta_helix type Building.
- Beta_helix comment "A beta helix is a protein structure formed by the association of parallel beta strands in a helical pattern with either two or three faces. The beta helix is a type of solenoid protein domain. The structure is stabilized by inter-strand hydrogen bonds, protein-protein interactions, and sometimes bound metal ions.".
- Beta_helix label "Beta helix".
- Beta_helix sameAs Q487869.
- Beta_helix sameAs Hélice_beta.
- Beta_helix sameAs Hélice_beta.
- Beta_helix sameAs Βヘリックス.
- Beta_helix sameAs m.0d6dsz.
- Beta_helix sameAs Beta_heliks.
- Beta_helix sameAs Beta_heliks.
- Beta_helix sameAs Q487869.
- Beta_helix wasDerivedFrom Beta_helix?oldid=705858579.
- Beta_helix depiction 1m8n_Choristoneura_fumiferana.png.
- Beta_helix isPrimaryTopicOf Beta_helix.
