Cloning and Bioinformatics Analysis of MARK2 and CREB5 Genes in Cattle

This research aimed to clone and analyze the biological characteristics of MARK2 and CREB5 genes in cattle.In the GenBank database,MARK2 and CREB5 genes of human were chosen to blast and expressed sequence tags (ESTs) of cattle were got.Specific primers were designed and RT-PCR was used to clone the cDNA sequence from the scapula muscle of cattle with vacancy parts making up,and then MARK2 and CREB5 genes were successfully cloned.The results showed that MARK2 gene coding region was 2 076 bp,which encoded 691 amino acids.CREB5 gene coding region was 1 527 bp,which encoded 508 amino acids.The physical and chemical properties of protein prediction showed that MARK2 and CREB5 proteins were hydrophilic protein;The phosphorylation sites in threonine (Thr),serine (Ser) and tyrosine (Tyr) residues;The secondary structure of MARK2 and CREB5 proteins were maily composed of random coil and layed a foundation for the tertiary structure;Protein subcellular localization prediction showed that MARK2 and CREB5 proteins did not belong to the secretory protein;MARK2 protein contained a S_TKc domain and an UBA function structure,CREB5 protein contained a ZnF_C2H2 function structure,a BRLZ function structure and five low complexity regions and MARK2 and CREB5 proteins had no transmembrane structure.