Utilization of Emulsiflex Prepared Escherichia coli Strain EC4 Oxyrase for Improved Cultivation of Anaerobic Bacteria by using Hungate Technique and Determination of its Kinetic Parameters
Muhammad Usman Ahmadand Ikram-ul-Haq*
Institute of Industrial Biotechnology, GC University, Lahore-54000
* Corresponding author: ikmhaq@yahoo.com
Fig. 1.
Phylogenetic tree showing evolutionary relationship between isolated E. coli strain EC4 (oxyrase strain) and some reference strains. The number at the branch nodes indicates bootstrap values (%) based on 1000 replication. The scale bar represents 0.0005 nucleotide substitutes per position.
Fig. 2.
Effect of time on oxyrase activity (emulsiflex mediated prepared membrane fragments); 57°C temperature, pH 8.5 and 25mM lactate as H+ donor. Y-error bars represents the standard deviation among the triplicates. Each value is an average of three replicates, data labels followed by different letters differs significantly at ∝=0.05.
Fig. 3.
Effect of initial concentration of H+ donors on oxyrase activity; time 1.5 min, 57°C temperature, pH 8.5. Y-error bars represents the standard deviation among the triplicates. Each value is an average of three replicates, data labels followed by different letters differs significantly at ∝=0.05.
Fig. 4.
Comparison and effect of Cys-HCl and E. coli oxyrase on growth pattern of Anaerobaculum hydrogeniformans OS1 (A), Akkermansia muciniphila (B), Bilophila wadsworthia (C) and Roseburia intestinalis (D). Y-error bars represents the standard deviation among the triplicates. Each value is an average of three replicates, data labels followed by different letters differs significantly at ∝=0.05.
Fig. 5.
Double reciprocal Lineweaver-Burk plot between inverse of V and inverse of different concentrations of various substrates for emulsiflex prepared oxyrase membrane fragments at 57°C, pH 8.5 and time 1.5 min.