Isolation, cloning and bioinformatic analysis of cytochrom oxidase C subunit I in Citrus

Cytochrome oxidase is one of a superfamily of proteins which act as the terminal enzymes of respiratory chains. The two main classes are cytochrome c oxidases, and quinol oxidases. There are two catalytic subunits, I and II. Subunit I contains two heme centers. In this study we have isolated the cytochrom oxidase (COX) gene from orange by PCR and clone it by ligation of this product to pGEM-T vector transformed E. coli bacteria. Sequencing analysis shows that open reading frame for this gene that encode a protein with 217 amino acids. Results of phylogenetic analysis showed that this gene in orange has related to Chondrostoma cytochrom oxidase gene (COX). cytochrom oxidase gene protein secrete in membrane and it’s extracellular secretion is little. The aim of this study was isolation and cloning of cytochrom oxidase gene genes from citrus genome and determining of it’s characterizations to practical use in the plants.