One-bond and two-bond J couplings help annotate protein secondary-structure motifs: J-coupling indexing applied to human endoplasmic reticulum protein ERp18.

Abstract

NMR coupling constants, both direct one-bond ((1)J) and geminal two-bond ((2)J), are employed to analyze the protein secondary structure of human oxidized ERp18. Coupling constants collected and evaluated for the 18 kDa protein comprise 1268 values of (1)J(CαHα), (1)J(CαCβ), (1)J(CαC'), (1)J(C'N'), (1)J(N'Cα), (1)J(N') (HN), (2)J(CαN'), (2)J(HNCα), (2)J(C… (More)
DOI: 10.1002/prot.22893

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