2023
Megahertz Sampling of Prestin (SLC26a5) Voltage-Sensor Charge Movements in Outer Hair Cell Membranes Reveals Ultrasonic Activity that May Support Electromotility and Cochlear Amplification
Santos-Sacchi J, Bai J, Navaratnam D. Megahertz Sampling of Prestin (SLC26a5) Voltage-Sensor Charge Movements in Outer Hair Cell Membranes Reveals Ultrasonic Activity that May Support Electromotility and Cochlear Amplification. Journal Of Neuroscience 2023, 43: 2460-2468. PMID: 36868859, PMCID: PMC10082455, DOI: 10.1523/jneurosci.2033-22.2023.Peer-Reviewed Original ResearchConceptsConformational switchingMammalian hearingMembrane motor proteinCochlear amplificationMotor protein prestinVoltage-sensor charge movementOuter hair cell electromotilityHair cell electromotilityProtein prestinMotor proteinsConformation switchingCharge movementPrestinPrestin activityCell membraneOHC electromotilityHair cell membraneElectromotilityTransmembrane voltageOrgan of CortiAmplificationMammalsMembrane capacitanceProtein
2019
Prestin kinetics and corresponding frequency dependence augment during early development of the outer hair cell within the mouse organ of Corti
Bai JP, Navaratnam D, Santos-Sacchi J. Prestin kinetics and corresponding frequency dependence augment during early development of the outer hair cell within the mouse organ of Corti. Scientific Reports 2019, 9: 16460. PMID: 31712635, PMCID: PMC6848539, DOI: 10.1038/s41598-019-52965-1.Peer-Reviewed Original ResearchConceptsOuter hair cellsPostnatal dayVoltage-sensor charge movementAltricial animalsPostnatal developmentCochlear placeElectrical correlatesHair cellsMouse organsCochlear amplificationEarly developmentAuditory frequencyPrestin activityAuditory capabilitiesCellsCharge movementHigh frequencyResponse increasesPrestin functionMiceActivityMonthsCourse
2005
On the Effect of Prestin on the Electrical Breakdown of Cell Membranes
Navarrete EG, Santos-Sacchi J. On the Effect of Prestin on the Electrical Breakdown of Cell Membranes. Biophysical Journal 2005, 90: 967-974. PMID: 16299081, PMCID: PMC1367121, DOI: 10.1529/biophysj.105.064105.Peer-Reviewed Original ResearchConceptsTSA cellsWhole cell levelVoltage-dependent activityGuinea pig OHCsOuter hair cell motor proteinMotor proteinsPM domainsMaximum transmembrane potentialPrestin activityMembrane susceptibilityTransmembrane potentialCell membranePrestinTsA201 cellsBiophysical influencesMembrane stiffnessElectroporationCellsBasal portionSignificant resistanceMembrane capacitanceProteinElectromotilityAuditory sensitivitySusceptibility
2001
Effects of membrane potential and tension on prestin, the outer hair cell lateral membrane motor protein
Santos‐Sacchi J, Shen W, Zheng J, Dallos P. Effects of membrane potential and tension on prestin, the outer hair cell lateral membrane motor protein. The Journal Of Physiology 2001, 531: 661-666. PMID: 11251048, PMCID: PMC2278494, DOI: 10.1111/j.1469-7793.2001.0661h.x.Peer-Reviewed Original ResearchConceptsMembrane tensionMembrane motor proteinMembrane-bound proteinsHuman embryonic kidney cellsLateral plasma membraneEmbryonic kidney cellsMolecular basisPlasma membraneProtein prestinMotor proteinsConformational changesHigh-resolution analysisPrestin activityPrestinKidney cellsMembrane potential