Lub α helix yog ruaj khov los ntawm hydrogen bonds nruab nrab NH thiab CO pawg ntawm cov saw tseem ceeb. … Txhua qhov seem muaj feem cuam tshuam rau ib qho tom ntej los ntawm kev nce ntawm 1.5 Å raws helix axis thiab kev sib hloov ntawm 100 degrees, uas muab 3.6 amino acid residues ib tig ntawm helix.
Yuav ua li cas yog hydrogen bonding qauv hauv ib qho alpha helix?
Lub alpha helix yog ruaj khov los ntawm hydrogen bonds (pom raws li cov kab khiav) los ntawm carbonyl oxygen ntawm ib cov amino acid rau cov amino pawg ntawm cov amino acid thib ob. Vim hais tias cov amino acids txuas los ntawm txhua daim ntawv cog lus hydrogen yog plaub sib nrug hauv thawj theem, cov saw tseem ceeb hydrogen bonds hu ua " n rau n + 4 "
Puas muaj pes tsawg hydrogen bonds nyob rau hauv alpha helix?
4 Xaiv cov ncauj lus. A 12 residue alpha helix yuav tsuas muaj 8 hydrogen bonds, txawm tias 12 qaum NH (cov neeg pub dawb) thiab 12 qaum CO (cov neeg txais). N- thiab C-terminal kawg ntawm ib qho kev sib cais helix muaj plaub tus neeg pub dawb NH thiab plaub tus neeg txais CO txhua, raws li qhov cuam tshuam ntawm ntug (Daim duab 2).
Puas yog hydrogen bonds hauv alpha helix perpendicular?
In the α helix the hydrogen bonds: … are roughly perpendicular to the axis of the helix. C) tshwm sim feem ntau ntawm electronegative atoms ntawm R pawg.
Puas yog alpha helix intramolecular hydrogen bond?
Tag nrho cov lus teb (6) Nws yog ib txwm intramolecular H-bonding muaj zog duaintermolecular sawv daws yuav. … Hauv ib qho α helix, carbonyl (C=O) ntawm ib qho amino acid yog hydrogen bonded rau cov amino H (N-H) ntawm cov amino acid uas yog plaub hauv cov saw hlau. (Piv txwv li, carbonyl ntawm amino acid 1 yuav tsim ib daim ntawv cog lus hydrogen rau N-H ntawm amino acid 5.)
