Motility speed of archaea Halobacterium halobium

Value 2.94 µm/sec Range: ±0.34 µm/sec
Organism Archaea Halobacterium halobium
Reference Marwan W, Alam M, Oesterhelt D. Rotation and switching of the flagellar motor assembly in Halobacterium halobium. J Bacteriol. 1991 Mar173(6):1971-7. p.1972 caption of fig.2PubMed ID2002000
Method "When the swimming behavior of monopolarly flagellated cells was observed, often faster and smoother swimming during CW [clockwise] than during CCW [counter clockwise] rotation could be seen. A typical example of this behavior is shown in Fig. 1. To quantitate the efficiency of flagellar propulsion in the two modes, [investigators] recorded the swimming pattern and the velocity of single cells with a computer-assisted motion analysis system under simultaneous observation of the rotational sense of the flagellar bundle by high-intensity dark-field microscopy."
Comments "The speed of a single cell during successive intervals of CW and CCW rotation of its flagellar bundle was recorded as in Fig.1 for periods of 5s. Each bar represents the average velocity of the cell during this period. From time to time, the cell was stimulated with light to induce motor switching. The cell had a speed of 2.94±0.34µm/s (mean ± standard deviation n = 48) during CW rotation and a speed of 1.59±0.39µm/s (n = 45) during CCW rotation."
Entered by timurt
ID 111147