Truncates the protein after amino acid 187 and removes several distinct C-terminal domains (including the RRM, the opa repeat and most of the Ser Thr-rich sequence).
Stop codon at amino acid position 179.
Amino acid replacement: Q184term.
Nucleotide substitution: C2564T.
The mutation is 28 amino acids downstream of the homeobox.
Truncated protein.
2564 C --> T; 184 gln --> amber
C6758123T
C2564T
Q179term | bcd-PD; Q108term | bcd-PE; Q103term | bcd-PF; Q184term | bcd-PG
Q184term
embryonic head (with bcd6)
embryonic thorax (with bcd6)
bcd6/bcd1 has embryonic/larval posterior spiracle | ectopic phenotype, suppressible | partially by Mdoa\bcdbcd.1
bcd6/bcd1 has embryonic thorax phenotype, suppressible | partially by Mdoa\bcdbcd.1
bcd6/bcd1 has embryonic head phenotype, suppressible | partially by Mdoa\bcdbcd.1
Mdoa\bcdbcd.1 partially rescues the defects seen in embryos derived from bcd6/bcd1 females, with the degree of rescue depending on the Mdoa\bcdbcd.1 line used. In the strongest rescuing line, complete rescue is seen in a small proportion of embryos, as shown by the presence of all three thoracic segments, a complete head skeleton and other anterior structures such as the mouthhooks and labrum. 7.4% of embryos can develop into fully fertile adults, but most embryos show no rescue.
Intermediate bcd allele.
hb protein expression in early bcd1 mutant embryos has been studied.