Phylogenetic Analysis of Globin Like Superfamily at Molecular Level

Preprints.org
Himani Malhotra, Harmanpreet Kaur Sanghu

Abstract

Globin-like superfamily constitutes a superfamily of both extracellular and intracellular proteins that are found in 3 kingdoms of life. Globins are respiratory proteins that usually bind an oxygen molecule .Earlier, phylogenetic study of globin like superfamily was based on morphological character, however, molecular basis of their functional diversity is not completely understood. The present study focuses on the phylogenetic analysis of globin at molecular level. Firstly, proteins of SCOP families of globin like superfamily were retrieved from NCBI and then similar proteins are retrieved from PSI BLAST results and then pfam was used to predict the domains and two domains: Globin and Phycobilisome were analysed. Other analysis predicted the localization in cytoplasm of most of the proteins. The nucleotide sequences of same species for protein analysis were retrieved from NCBI, and phylogenetic analysis of aligned fasta files of proteins and nucleotides by using MEGA at molecular level was performed and analysis shows the difference on taxonomic tree and phylogenetic tree.

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