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. 2018 Mar 26;7:e33685. doi: 10.7554/eLife.33685

Figure 5. Eb1 binds to Dome and regulates GSC centrosome/spindle orientation.

(A) Co-immunoprecipitation of Dome with Eb1. Dome-GFP was pulled down from GSC extracts using an anti-GFP antibody and blotted using anti-Eb1 and anti-GFP. (B–C) Examples of centrosomes in control (B) and nos-gal4 > UAS-eb1RNAi (C) GSCs (outlined by a dotted line). Asterisk indicates the hub. Arrowheads indicate centrosomes. Green: Vasa. Red: Fas III and γ-Tubulin. Blue: DAPI. Bar: 5 µm. (D–E) Examples of mitotic spindles in control (D) and nos-gal4 > UAS-eb1RNAi (E) GSCs (outlined by a dotted line). Asterisk indicates the hub. Arrowheads indicate spindle poles. Green: Vasa. Red: Fas III and γ-Tubulin. White: PH3. Blue: DAPI. Bar: 5 µm. (F) GSC spindle orientation in the indicated genotypes. P value was calculated using two-tailed Student’s t-test. Error bars indicate the standard deviation. N = mitotic GSCs scored. (G–J) Eb1 localization in interphase control GSC (G), nos-gal4ΔVP16, gal80ts > UAS-domeRNAi (4 d after RNAi induction) GSC (H), control GB (I), and nos-gal4ΔVP16, gal80ts > UAS-domeRNAi (4 d after RNAi induction) GB (J). Asterisk indicates the hub. Green: α-Tubulin. Red: Eb1. Bar: 5 µm. (K–N) Eb1 localization in metaphase control GSC (K), nos-gal4ΔVP16, gal80ts > UAS-domeRNAi (4 d after RNAi induction) GSC (L), control GB (M), and nos-gal4ΔVP16, gal80ts > UAS domeRNAi (4 d after RNAi induction) GB (N). Asterisk indicates the hub. Green: α-Tubulin. Red: Eb1. Bar: 5 µm. (O–P) Pixel intensity analyses of Eb1 at interphase (O) and mitotic (P) GSCs in control and nos-gal4ΔVP16, gal80ts > UAS-domeRNAi (4 d after RNAi induction) testes. P value was calculated using two-tailed Student’s t-test. Error bars indicate the standard deviation.

Figure 5.

Figure 5—figure supplement 1. Eb1 is required for Dome localization in GSCs.

Figure 5—figure supplement 1.

(A–D) Dome localization in control interphase (A), control metaphase (B), nos-gal4 > UAS-eb1RNAi interphase (C), and nos-gal4 > UAS-eb1RNAi metaphase (D) GSCs. Asterisk indicates the hub. Green: Vasa. Red: Dome. White: γ-Tubulin. Blue: DAPI. Bar: 5 µm. (E–F) Dome localization in control (E) and nos-gal4 > UAS-eb1RNAi (F) GBs. Green: Vasa. Red: Dome. White: γ-Tubulin. Blue: DAPI. Bar: 5 µm. (G–H) Pixel intensity analyses of Dome in interphase (G) and mitotic (H) GSCs in control and nos-gal4 > UAS-eb1RNAi testes. P value was calculated using two-tailed Student’s t-test. Error bars indicate the standard deviation.