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Phosphorylation of the regulatory domain of human tyrosine hydroxylase 1 monitored using non-uniformly sampled NMR
P. Louša, H. Nedozrálová, E. Župa, J. Nováček, J. Hritz,
Language English Country Netherlands
Document type Journal Article
- MeSH
- Phosphorylation MeSH
- Intracellular Signaling Peptides and Proteins metabolism MeSH
- Kinetics MeSH
- Humans MeSH
- Magnetic Resonance Spectroscopy methods MeSH
- Protein Serine-Threonine Kinases metabolism MeSH
- Cyclic AMP-Dependent Protein Kinases metabolism MeSH
- Protein Domains MeSH
- Protein Structure, Secondary MeSH
- Tyrosine 3-Monooxygenase chemistry metabolism MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
Human tyrosine hydroxylase 1 (hTH1) activity is regulated by phosphorylation of its regulatory domain (RD-hTH1) and by an interaction with the 14-3-3 protein. The RD-hTH1 is composed of a structured region (66-169) preceded by an intrinsically disordered protein region (IDP, hTH1_65) containing two phosphorylation sites (S19 and S40) which are highly relevant for its increase in activity. The NMR signals of the IDP region in the non-phosphorylated, singly phosphorylated (pS40) and doubly phosphorylated states (pS19_pS40) were assigned by non-uniformly sampled spectra with increased dimensionality (5D). The structural changes induced by phosphorylation were analyzed by means of secondary structure propensities. The phosphorylation kinetics of the S40 and S19 by kinases PKA and PRAK respectively were monitored by non-uniformly sampled time-resolved NMR spectroscopy followed by their quantitative analysis.
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