Life, Volume 10, Issue 11
2020 November - 57 articles
Cover Story: Type IV pili (T4P) are cell-surface proteinaceous filaments found in many prokaryotic organisms and convey twitching motility through their extension/retraction cycles, moving cells across surfaces. In cyanobacteria, twitching motility is the sole mode of motility characterised to date and is how cells perform phototaxis, the movement towards and away from directional light sources. Wavelength and intensity of light determine the direction of movement and signal for some cyanobacteria to form multicellular assemblages. Formation of such aggregates allows for acclimation to unfavourable environmental conditions and stresses. T4P also enable natural transformation and secretion processes. Thus, cyanobacteria respond to external stimuli by escaping unfavourable environmental conditions via phototaxis, exchanging genetic material, or modifying their surroundings to better fit their needs. View this paper - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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