Figure 8. AE assembly requires HTP-3. (A) HTP-3 and SYP-1 colocalize in pachytene nuclei of wild-type animals. Cruciform HTP-3 staining is observed on diakinesis bivalents. HTP-3 staining persists in
htp-1 htp-2 and
him-3 mutants. HTP-3 is undetectable in
htp-3(
y428) animals, and SYP-1 is present in polycomplexes, as previously described in
htp-3(RNAi) animals (Goodyer et al. 2008). (A-C) Sister chromatids appear slightly separated in diakinesis univalents of
htp-3(
y428) and
htp-3(RNAi) animals. (B,C) HTP-3 is required for the association of HTP-1/2 and HIM-3 with meiotic chromosomes. HTP-1/2 and HIM-3 colocalize with SYP-1 in pachytene nuclei of wild-type animals. HIM-3 is present along both arms of diakinesis bivalents (C), while HTP-1/2 associate exclusively with the long arm (B). HTP-1/2 and HIM-3 are undetectable on meiotic chromosomes of
htp-3(
y428) animals. HIM-3 is present in polycomplexes in pachytene nuclei.