NDLI: Cloning, characterization and localization of Chinese hamster HP1 isoforms

Content Provider	Springer Nature Link
Author	Szakál, Barnabás Cserpán, Imre Csonka, Erika Mostori, Éva Udvardy, Andor Hadlaczky, Gyula
Copyright Year	2004
Abstract	The Chinese hamster is one of the few mammalian species that are characterized by relatively poor heterochromatin content. It was intriguing to test whether or not the lack of large blocks of heterochromatin in the hamster chromosomes could be correlated with the absence or species-specific differences of the HP1 proteins, the main structural components of heterochromatin. To address this, we attempted to clone HP1 from the Chinese hamster. It is shown here that all three isoforms of HP1 known in mammals are present in hamster, and the amino acid sequences deduced from the cDNAs of the isoforms are 97–100% identical to those of the known mammalian homologues. All three isoforms are localized mainly in heterochromatic regions in the native chromosomes and nuclei. The hamster HP1α gene was cloned, sequenced and mapped to the short arm of hamster chromosome 2.These data indicate that the Chinese hamster has all the HP1 components necessary for the establishment of heterochromatin. The limited amount of heterochromatin in hamster cells may probably be attributed to the unusual satellite DNA content of the hamster genome.
Starting Page	483
Ending Page	493
Page Count	11
File Format	PDF
ISSN	09673849
Journal	Chromosome Research
Volume Number	12
Issue Number	5
e-ISSN	15736849
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human Genetics Plant Genetics & Genomics Animal Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics

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