Journal: PNAS Nexus
Article Title: Modulation of microtubule dynamics by monovalent ions
doi: 10.1093/pnasnexus/pgae544
Figure Lengend Snippet: Ion effect on microtubule damage. a) Scheme of the damage assay. Salts were added during the damage step. b) Representative TIRF images of microtubules showing progressive and bent damage over time. The first two columns show the same microtubules. Red arrowhead: damage site; yellow arrowhead: breakage of microtubule followed by depolymerization. Scale bar: 5 μm. c) Mean microtubule breaking (number of broken microtubules/the total number of microtubules). d) Mean time until microtubule breakage (with the indicated salt), from the beginning of the assay until microtubule started to depolymerize, as indicated by the yellow arrowhead in (b). e) Mean time until microtubule damage (with the indicated salt), from the beginning of the assay until the first sign of damage. f) Mean lifetime of damaged microtubules (seconds until microtubule depolymerized—seconds of first damage sign), with the indicated salt. d–f) Experimental mean with SD, n = at least three independent experiments, individual values, and experimental mean values (orange dots). Statistics: one-way ANOVA. g) Percentage between the two different damaged types with indicated 100 mM salt or 0 mM (control). h) Scheme of the ionic effects of Na + and Ac − on the longitudinal and the lateral interactions of tubulin within the microtubule structure.
Article Snippet: Microscopy images were taken with an Axio Observer Inverted TIRF microscope (Zeiss, 3i) and a Prime BSI (Photometrics).
Techniques: Control