Nucleotide substitution: C1475T.
Amino acid replacement: Q414term.
C3024957T
C1475T
Q448term | aly-PA; Q448term | aly-PB
Q414term
nuclear lamina | adult stage | male (with aly5)
nucleolus | adult stage (with aly5p)
spermatocyte (with aly3)
spermatocyte | adult stage (with aly5p)
aly2/aly5 adult heterozygote males show morphological defects of the nuclear lamina in stage S4-S6 spermatocytes (the lamina has distinctly more ballon-like shape, lacking the deformations that correlate with chromosome distribution seen in wild-type), while in stage S3 the lamina is of wild-type appearance.
Sister chromatid separation occurs normally in homozygous mutants.
Early stages of spermatogenesis up through mature primary spermatocytes are present and normal. Postmeiotic stages are completely absent. Mutant testes have an abundance of mature primary spermatocytes with large, round nuclei and prominent nucleoli. Spermatocytes arrest in the G2/M transition of meiosis I with partial chromosome condensation.