PJB-2020-20
A STUDY ON GENETIC DIVERSITY AND EVOLUTIONARY ANALYSIS OF ECA1 PROTEIN (P2A-TYPE ATPASE) IN DIFFERENT PLANT FAMILIES
Roohi Aslam
Abstract
Calcium and manganese are two of the most important nutrients required by plants. Calcium/ manganese uptake and accumulation is carried out by a large group of transporters. Among these, the P-type ATPases are considered most important. These ATPases have been divided into two categories i.e., P2A and P2B on the basis of absence and presence N terminal auto inhibitory domain respectively. ECA1 is an important P2A-type ATPase which is localized in endosomal system and has crucial roles in calcium and manganese translocations. In this study phylogeny of ECA1 protein within different plant families as well as conserved motifs putatively involved in Ca2+ ions binding were investigated. Moreover, secondary and tertiary structures of ECA1 proteins in different plant species were also predicted. Phylogenetic analysis and diversity in predicted secondary and tertiary structures indicated that ECA1 protein is functionally conserved but structurally diverged in different plant families. Moreover, same amino acids are found to be involved in Ca2+ ions binding in ECA1 proteins of different plant species which gives idea that evolution of ECA1 gene is monophyletic in nature hence, indicating divergent evolution
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