The chicken lysozyme chromatin domain contains a second, widely expressed gene

Samantha Chong, AD Riggs, Constanze Bonifer

Research output: Contribution to journalArticle

31 Citations (Scopus)


The chicken lysozyme (cLys) locus has been shown to contain all of the cis-elements necessary for position-independent and tissue-specific expression entirely within a 24-kb region defined by general DNase I sensitivity and flanked by matrix attachment regions. As such, it has been viewed as an example of a functional chromatin domain, which is structurally and functionally isolated from neighbouring chromatin. We report here the identification and characterisation of the chicken glioma-amplified sequence (cGas41) locus, which though widely expressed, is contained entirely within the lysozyme chromatin domain. The cGas41 transcript encodes a putative transcription factor, starts 207 bp downstream of the cLys polyadenylation site and is preceded by a CpG island with proposed dual promoter/origin function. The location and differential expression of cGas41 compels re-evaluation of the accumulated literature on the lysozyme domain, and represents an example of two unrelated, differentially expressed vertebrate genes coexisting in the same functional chromatin domain.
Original languageEnglish
Pages (from-to)463-467
Number of pages5
JournalNucleic Acids Research
Issue number2
Publication statusPublished - 1 Jan 2002

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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