User:Karsten Theis/turns
From Proteopedia
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| - | A '''turn''' is a secondary structure element consisting of four consecutive amino acids (or three peptide planes). The geometry of turns correspond to a change in the direction of the polypeptide backbone, allowing them to connect alpha helices and beta strands at the surface of a globular protein. Of the six main chain hydrogen bonding partners of a turn, a maximum of two are engaged in hydrogen bonding, and turns are rarely found in the hydrophobic core. | + | A '''beta turn''' is a secondary structure element consisting of four consecutive amino acids (or three peptide planes). The geometry of turns correspond to a change in the direction of the polypeptide backbone, allowing them to connect alpha helices and beta strands at the surface of a globular protein. Of the six main chain hydrogen bonding partners of a turn, a maximum of two are engaged in hydrogen bonding, and turns are rarely found in the hydrophobic core. |
| - | == | + | ==Exploring turns== |
<StructureSection load='' size='500' side='right' caption='' scene='10/1072233/Turn/5'>Here is a turn (reload original <scene name='10/1072233/Turn/5'>conformation</scene>) that you can explore with the buttons below. To get a low energy conformation, you want a good hydrogen bond, i.e. carbonyl oxygen, amide hydrogen and nitrogen colinear <jmol> | <StructureSection load='' size='500' side='right' caption='' scene='10/1072233/Turn/5'>Here is a turn (reload original <scene name='10/1072233/Turn/5'>conformation</scene>) that you can explore with the buttons below. To get a low energy conformation, you want a good hydrogen bond, i.e. carbonyl oxygen, amide hydrogen and nitrogen colinear <jmol> | ||
<jmolLink> | <jmolLink> | ||
Revision as of 20:44, 7 February 2025
A beta turn is a secondary structure element consisting of four consecutive amino acids (or three peptide planes). The geometry of turns correspond to a change in the direction of the polypeptide backbone, allowing them to connect alpha helices and beta strands at the surface of a globular protein. Of the six main chain hydrogen bonding partners of a turn, a maximum of two are engaged in hydrogen bonding, and turns are rarely found in the hydrophobic core.
Exploring turns
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