Search results for "Periplasm"

showing 2 items of 32 documents

Relative abundance of the membrane bound- and periplasmic nitrate-reductases in the environment

2007

periplasmic nitrate-reductase[SDV] Life Sciences [q-bio][SDE] Environmental Sciences[SDV]Life Sciences [q-bio]membrane bound[SDE]Environmental Sciencesenvironment
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Properties of transmembrane helix TM1 of the DcuS sensor kinase of Escherichia coli, the stator for TM2 piston signaling

2021

Abstract The sensor kinase DcuS of Escherichia coli perceives extracellular fumarate by a periplasmic PASP sensor domain. Transmembrane (TM) helix TM2, present as TM2-TM2′ homo-dimer, transmits fumarate activation in a piston-slide across the membrane. The second TM helix of DcuS, TM1, is known to lack piston movement. Structural and functional properties of TM1 were analyzed. Oxidative Cys-crosslinking (CL) revealed homo-dimerization of TM1 over the complete membrane, but only the central part showed α-helical +3/+4 spacing of the CL maxima. The GALLEX bacterial two-hybrid system indicates TM1/TM1′ interaction, and the presence of a TM1-TM1′ homo-dimer is suggested. The peripheral TM1 regi…

urogenital systemChemistryClinical BiochemistryPeriplasmic spaceOxidative phosphorylationmedicine.disease_causeBiochemistryTransmembrane proteinTransmembrane domainMembraneMembrane regionHelixmedicineBiophysicsMolecular BiologyEscherichia coliBiological Chemistry
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