An Approach to NMR Assignment of Intrinsically Disordered Proteins.
An Approach to NMR Assignment of Intrinsically Disordered Proteins.
Chemphyschem. 2015 Jan 30;
Authors: Goradia N, Wiedemann C, Herbst C, Görlach M, Heinemann SH, Ohlenschläger O, Ramachandran R
Abstract
An efficient approach to NMR assignments in intrinsically disordered proteins is presented, making use of the good dispersion of cross peaks observed in [(15) N,(13) C']- and [(13) C',(1) H(N) ]-correlation spectra. The method involves the simultaneous collection of {3D (H)NCO(CAN)H and 3D (HACA)CON(CA)HA} spectra for backbone assignments via sequential H(N) and H(?) correlations and {3D (H)NCO(CACS)HS and 3D (HS)CS(CA)CO(N)H} spectra for side-chain (1) H and (13) C assignments, employing sequential (1) H data acquisitions with direct detection of both the amide and aliphatic protons. The efficacy of the approach for obtaining resonance assignments with complete backbone and side-chain chemical shifts is demonstrated experimentally for the 61-residue [(13) C,(15) N]-labelled peptide of a voltage-gated potassium channel protein of the Kv1.4 channel subunit. The general applicability of the approach for the characterisation of moderately sized globular proteins is also demonstrated.
PMID: 25639453 [PubMed - as supplied by publisher]
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