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Structural insights of two novel N-acetyl-glucosaminidase enzymes through in silico methods.


ABSTRACT: EndoBI-1 and EndoBI-2 are two endo- ?-N- acetylglucosaminidase isoenzymes that cleave N-N'- diacetylchitobiosyl moieties found in various types of native N -glycans. These N -glycans are indigestible by human infants and adults due to the lack of responsible glycosyl hydrolases and they act as selective prebiotics for a probiotic microorganism, Bifidobacterium longum subsp . infantis , in the large intestine. The selectivity and the thermostability of EndoBI-1 and EndoBI-2 suggest that these enzymes may be useful for many scientific and industrial applications. In this study, the growing numbers of homologous sequences in different databases were exploited in a comparative approach to investigate structural properties of EndoBI-1 and EndoBI-2 enzymes. Moreover, the complete and partial homology models of these two enzymes were generated and evaluated. Selected models were used for docking studies of the plus subsite ligand of these enzymes for further understanding on the substrate selectivity of EndoBI enzymes.

SUBMITTER: SahutoGlu AS 

PROVIDER: S-EPMC7763110 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Structural insights of two novel N-acetyl-glucosaminidase enzymes through in silico methods.

ŞahutoĞlu Arif Sercan AS   Duman Hatice H   Frese Steven Alex SA   Karav Sercan S  

Turkish journal of chemistry 20201216 6


EndoBI-1 and EndoBI-2 are two endo- <i>β-N-</i> acetylglucosaminidase isoenzymes that cleave <i>N-N'-</i> diacetylchitobiosyl moieties found in various types of native <i>N</i> -glycans. These <i>N</i> -glycans are indigestible by human infants and adults due to the lack of responsible glycosyl hydrolases and they act as selective prebiotics for a probiotic microorganism, <i>Bifidobacterium longum</i> subsp <i>. infantis</i> , in the large intestine. The selectivity and the thermostability of En  ...[more]

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