Transmembrane signaling by a chimera of the Escherichia coli aspartate receptor and the human insulin receptor.
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چکیده
منابع مشابه
Disulfide cross-linking studies of the transmembrane regions of the aspartate sensory receptor of Escherichia coli.
The Escherichia coli aspartate receptor, a dimer of identical subunits, has two transmembrane regions (TM1, residues 7-30; TM2, residues 189-212) of 24 residues each. To study the relative placement and orientation of the regions, cysteine residues were introduced individually into the center of each: at positions 17, 18, and 19 in TM1; and at positions 198, 199, 200, and 201 in TM2. Based on t...
متن کاملTransmembrane signalling and the aspartate receptor.
BACKGROUND The aspartate receptor is a transmembrane protein that mediates bacterial chemotaxis. The structures of the periplasmic ligand-binding domain reveal a dimer, each subunit with four alpha-helix bundles, with aspartate binding to one of two sites at the subunit interface. The transmembrane regions of the receptor were not included in these structures. RESULTS To investigate the struc...
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15 صفحه اولImitation of Escherichia coli aspartate receptor signaling in engineered dimers of the cytoplasmic domain.
Transmembrane signaling by bacterial chemotaxis receptors appears to require a conformational change within a receptor dimer. Dimers were engineered of the cytoplasmic domain of the Escherichia coli aspartate receptor that stimulated the kinase CheA in vitro. The folding free energy of the leucine-zipper dimerization domain was harnessed to twist the dimer interface of the receptor, which marke...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1989
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.86.15.5683