The phylogenetic relationships and divergence among
different subgroups of plant and animal D-type cyclin sequences are studied.
The orthologous plant and animal D-type cyclin translated sequences are
extracted from NCBI GenBank database categorically identified as D, D1,
D2, D3 and D5 types. Multiple sequence alignment was carried out using
Clustal W tool of EBI and phylogram was constructed. Further, distinct
nodes of phylogram were identified and their pattern was studied using
cyclin signature from Prosite database. The results were discussed in
terms of the relationships among different subgroups of D-type cyclins
forming distinct nodes of phylogram and the conservation of their patterns
at each node.