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. 2015 Jan 28;16:28. doi: 10.1186/s12859-015-0465-8

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© Kulik et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The multiple sequence alignment used for homology modeling of the TfHex monomer. Active site amino acids are marked by red dots. Cysteine residues are marked by green dots. Active site amino acids are numbered according to the sequence of β-N-acetylhexosaminidase from T. flavus (TfHex). 1jak - hexosaminidase from bacteria Streptomyces plicatus; 1now - human HexB; 3nsn - hexosaminidase from insect Ostrinia furnacalis. Val 276 in S. plicatus hexosaminidase is shown by red box.