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3d Structure of protein


Hydrogen bonds of backbone atoms. Length and N-H-O angle.
α-helix
#Bond length, ÅN-H-O angle, °
N(127ARG)-O(123VAL)2.86164.0
N(128ALA)-O(124ASP)2.91160.4
N(129ALA)-O(125VAL)3.05142.5
N(126LEU)-O(122GLY)3.02159.4
N(131VAL)-O(126LEU)2.98164.6
N(94ALA)-O(90LYS)3.03160.7
N(95ALA)-O(91LYS)2.82150.9
Average2.95157.5
ß-layer
#Bond length, ÅN-H-O angle, °
N(60GLN)-O(67TYR)2.97149.0
N(69SER)-O(58ALA)3.08158.8
N(71GLY)-O(56HIS)2.89151.7
N(81LEU)-O(74VAL)2.89175.0
N(75ARG)-O(52GLY)2.81164.4
N(83ILE)-O(72LEU)2.77179.0
N(56HIS)-O(71GLY)3.00154.8
Average2.92161.8
Total Average2.94159.7
Show JSmol script
Hydrogen bonds of backbone atoms. Length and N-H-O angle.
α-helix
#Bond length, ÅN-H-O angle, °
N(127ARG)-O(123VAL)2.86164.0
N(128ALA)-O(124ASP)2.91160.4
N(129ALA)-O(125VAL)3.05142.5
N(126LEU)-O(122GLY)3.02159.4
N(131VAL)-O(126LEU)2.98164.6
N(94ALA)-O(90LYS)3.03160.7
N(95ALA)-O(91LYS)2.82150.9
Average2.95157.5
ß-layer
#Bond length, ÅN-H-O angle, °
N(60GLN)-O(67TYR)2.97149.0
N(69SER)-O(58ALA)3.08158.8
N(71GLY)-O(56HIS)2.89151.7
N(81LEU)-O(74VAL)2.89175.0
N(75ARG)-O(52GLY)2.81164.4
N(83ILE)-O(72LEU)2.77179.0
N(56HIS)-O(71GLY)3.00154.8
Average2.92161.8
Total Average2.94159.7
Hydrogen bonds average parameters according to researches[1].
ParameterObservedExpected
Length, Å2.92< 3.5
N-H-O angle, °161.8160

Average parameters of hydrogen bonds are typical and are within acceptable values for proteins.

[1]Roderick E Hubbard Muhammad Kamran Haider: "Hydrogen Bonds in Proteins: Role and Strength", 2010. https://doi.org/10.1002/9780470015902.a0003011.pub2


© Michael Nikonov, 2021