gulm208 mutants are sensitized to lysyl oxidase inhibition. A-F: Clutches from gulm208/+ intercrosses were incubated in vehicle (A,B), the copper chelator neocuproine (2 μM; C,D), or the lysyl oxidase inhibitor β-aminopropionitrile (1 mM; E,F). The notochord is normal in wild-type embryos treated with vehicle, neocuproine, or β-aminopropionitrile (A,C,E). Notochords of gulm208 mutants incubated in neocuproine and β-aminopropionitrile (D,F, arrowheads) are substantially more distorted than mutants incubated in vehicle (B, arrowheads). Insets show notochord at higher magnification. Embryos were treated with PTU to inhibit melanin pigmentation and photographed at 30 hours postfertilization (hpf).
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