Fig. 2From: Enzyme-catalyzed biodegradation of penicillin fermentation residues by β-lactamase OtLac from Ochrobactrum triticiPhylogenetic tree of OtLac (Ot13187) from Ochrobactrum tritici and other functionalized β-lactamases from the Swiss-Prot database. Amino acid sequence alignment was performed using ClustalW. The tree was constructed using a neighbor-joining algorithm and 1000 repeated guided analyses. Guide values are displayed on the branch nodes. The scale bar represents 0.2 amino acid substitutions per amino acid. The OtLac (Ot13187) from Ochrobactrum tritici is indicated with the closed circle (●)Back to article page