Isolation, Substrate Specificity, and Subunit Characterization of the Xylanosomes Produced by Oerskovia turbata JCM 3160.

This work aims at functional studies of the multienzyme complexes produced by Oerskovia turbata JCM 3160 and reveal of their subunit structures. The multienzyme complexes were isolated, enzymatic assayed, the whole genome sequence was determined in fine scale, and the subunit structure was identified by Maldi-TOF mass spectrometry. The isolated multienzyme complexes here show similar particle size with the xylanosomes produced by Cellulosimicrobium cellulans F16, have at least two conserved multi-domain proteins, while differ significantly in enzymatic activities and low molecular weight subunit compositions. This is the first report of the enzymatic activities and subunit structures of xylanosome produced by Oerskovia turbata, providing insights into its diverse capability as well as degrading bias on hemicelluloses.