Structure of the human biotinidase gene

Structure of the human biotinidase gene Biotinidase cleaves biotin from biocytin, thereby recycling the vitamin. We have determined the structure of the human biotinidase gene. A genomic clone, containing three exons that code for the mature enzyme, was obtained by screening a human genomic bacteriophage library with the biotinidase cDNA by plaque hybridization. To obtain a clone containing the most 5′ exon of the biotinidase cDNA, a human PAC library by PCR was screened. The human biotinidase gene is organized into four exons and spans at least 23 kb. The 5′-flanking region of exon 1 contains a CCAAT element, three initiator sequences, an octamer sequence, three methylation consensus sites, two GC boxes, and one HNF-5 site, but has no TATA element. The region from nt −600 to +400 has features of a CpG island and resembles a housekeeping gene promoter. The structure and sequence of this gene are useful for identifying and characterizing mutations that cause biotinidase deficiency. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

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Publisher
Springer-Verlag
Copyright
Copyright © 1998 by Springer-Verlag New York Inc
Subject
Life Sciences; Cell Biology; Anatomy; Zoology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s003359900760
Publisher site
See Article on Publisher Site

Abstract

Biotinidase cleaves biotin from biocytin, thereby recycling the vitamin. We have determined the structure of the human biotinidase gene. A genomic clone, containing three exons that code for the mature enzyme, was obtained by screening a human genomic bacteriophage library with the biotinidase cDNA by plaque hybridization. To obtain a clone containing the most 5′ exon of the biotinidase cDNA, a human PAC library by PCR was screened. The human biotinidase gene is organized into four exons and spans at least 23 kb. The 5′-flanking region of exon 1 contains a CCAAT element, three initiator sequences, an octamer sequence, three methylation consensus sites, two GC boxes, and one HNF-5 site, but has no TATA element. The region from nt −600 to +400 has features of a CpG island and resembles a housekeeping gene promoter. The structure and sequence of this gene are useful for identifying and characterizing mutations that cause biotinidase deficiency.

Journal

Mammalian GenomeSpringer Journals

Published: Mar 20, 2009

References

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