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Solution structure of the transmembrane domain of the mouse erythropoietin receptor in detergent micelles.
- Source :
-
Scientific reports [Sci Rep] 2015 Aug 28; Vol. 5, pp. 13586. Date of Electronic Publication: 2015 Aug 28. - Publication Year :
- 2015
-
Abstract
- Erythropoiesis is regulated by the erythropoietin receptor (EpoR) binding to its ligand. The transmembrane domain (TMD) and the juxtamembrane (JM) regions of the EpoR are important for signal transduction across the cell membrane. We report a solution NMR study of the mouse erythropoietin receptor (mEpoR) comprising the TMD and the JM regions reconstituted in dodecylphosphocholine (DPC) micelles. The TMD and the C-terminal JM region of the mEpoR are mainly α-helical, adopting a similar structure to those of the human EpoR. Residues from S216 to T219 in mEpoR form a short helix. Relaxation study demonstrates that the TMD of the mEpoR is rigid whilst the N-terminal region preceding the TMD is flexible. Fluorescence spectroscopy and sequence analysis indicate that the C-terminal JM region is exposed to the solvent. Helix wheel result shows that there is hydrophilic patch in the TMD of the mEpoR formed by residues S231, S238 and T242, and these residues might be important for the receptor dimerization.
- Subjects :
- Amino Acid Sequence
Animals
Humans
Mice
Molecular Sequence Data
Phosphorylcholine analogs & derivatives
Phosphorylcholine chemistry
Protein Structure, Secondary
Protein Structure, Tertiary
Receptors, Erythropoietin metabolism
Solutions
Solvents chemistry
Detergents chemistry
Micelles
Nuclear Magnetic Resonance, Biomolecular
Receptors, Erythropoietin chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 5
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 26316120
- Full Text :
- https://doi.org/10.1038/srep13586