Table of Contents
ISRN Computational Biology
Volume 2013 (2013), Article ID 790240, 6 pages
Research Article

Zebra Finch Glucokinase Containing Two Homologous Halves Is an In Silico Chimera

1Department of General Chemistry, Belarusian State Medical University, Dzerzinskogo 83, 220116 Minsk, Belarus
2Department of Clinical Laboratory Diagnostics, Allergology and Immunology, Grodno State Medical University, Gorkogo 80, 230009 Grodno, Belarus

Received 9 September 2013; Accepted 29 September 2013

Academic Editors: P. Durrens and A. Fedorov

Copyright © 2013 Khrustalev Vladislav Victorovich et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Chimerical nature of the gene annotated as Zebra finch (Taeniopygia guttata) glucokinase (hexokinase IV) has been proved in this study. N-half of the protein encoded by that gene shows similarity with glucokinase from other vertebrates, while its C-half shows similarity with C-halves of hexokinases II. We mapped 7 new exons coding for N-half of hexokinase II and 4 new exons coding for glucokinase of Zebra finch. Finally, we reconstructed normal genes coding for Zebra finch glucokinase and hexokinase II which are situated in “head-to-tail” orientation on the chromosome 22. Because of the error in gene annotation, exons encoding N-half of normal glucokinase have been fused with exons encoding C-half of normal hexokinase II, even though they are separated from each other by the sequence 98066 nucleotides in length.