Translation-blocking antisense morpholino oligonucleotides (GeneTools, LLC) were designed to match the sequence of NvecGrl1. The sequences of the morpholinos used are:
NvecGrl1#1: ACGCTCCGACTGGAACTGCCATTCA
NvecGrl1#2: GAACTGCCATTCATTCCGCTTGTTC
control#1 (generic;36 (link)): CCATTGTGAAGTTAAACGATAGATC
control#2 (NvecGrl1 mismatch): ACGCGCCTACTGGAATTGCTATTAA
The two morpholinos against NvecGrl1 are partially overlapping to avoid 5′UTR sequence that is present elsewhere in the genome. The sequence corresponding to the start codon in the NvecGrl1 morpholinos is underlined.
Six3/6: GTACTGCCGCACTGCAAGACTTGTC36 (link)Fgfa1: ATAAGGTGGACGCATGACTTTGTAG
Fgfa2: CGTTAGCATGGTGATCGTCATGTTG33 (link)