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AvtorVardjan, Nina
Stenovec, Matjaž
Jorgačevski, Jernej
Kreft, Marko
Zorec, Robert, 1958-
Naslov Elementary properties of spontaneous fusion of peptidergic vesicles: fusion pore gating / Nina Vardjan ... [et al.]
Vrsta/vsebinatype of material članek - sestavni del
Jezikangleški
Leto2007
Fizični opisstr. 655-661
OpombeAbstract
Bibliografija: str. 659-661
BSDOCID136169
Predmetne oznakeExocytosis
Calcium
Neurotransmitters
Peptides
Pituitary Gland
Patch-Clamp Techniques
Membrane Fusion
Eksocitoza
Hipofiza
Kalcij
Nevrotransmiterji
Peptidi
Membrana, zlitje
Snov-vnos, tehnike
URNdoi:10.1113/jphysiol.2007.136135
PovzetekThe release of hormones and neurotransmitters by regulated exocytosis requiresthe delivery of secretory vesicles to the plasma membrane, where they dock and become primed for fusion with the plasma membrane. Upon stimulation afusion pore is formed through which cargo molecules diffuse out of the vesicle lumen into the extracellular space. After the cargo release the fusionpore either closes (kiss-and-run, transient exocytosis), fluctuates between an open and a closed state (for short times, fusion pore flickering, or for rather longer periods, 'pulsing pore') or expands irreversibly (full fusion exocytosis). In almost all secretory cells spontaneous secretion of vesicle cargo can be detected in the absence of stimulation. Spontaneous and stimulated exocytosis were thought to exhibit similar properties at elementarylevel, differing only in the probability of occurrence. However, recent studies indicate that spontaneous exocytosis differs from the stimulated one in many respects, therefore opening questions about the physiological role of spontaneous exocytosis. In this report we address the elementary properties of spontaneous and stimulated peptidergic vesicle discharge which appears to be modulated by fusion pore conductance (diameter) and fusion pore gating.
COBISS.SI-ID23735257
Glej publikacijo TI=Journal of physiology ISSN: 0022-3751.- Letn. 585, št. Pt 3 (2007), str. 655-661