Fig. 5. The genetic locus of vmc encodes the zebrafish orthologue of
plxna3. (A) Genetic map of the vmc locus. The
vmc locus was genetically mapped between the SSLP markers fj56g03
(2.1 cM) and z15045 (1.4 cM) on chromosome 8. (B) Location of the
missense amino acid substitutions in the three vmc mutant alleles in
the zebrafish orthologue of plxna3. Mutations were located within the
Sema domain (vmcrw260, E169D), in the IPT Plexin repeat 3
domain (vmcrw314, C1090S) and in the SP domain
(vmcrw413, W1746R) of Plxna3. In
addition, one allele (vmcrw260) carried a stop codon
within the Sema domain.