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Characterization of Expressed Sequence Tags From a Gallus gallus Pineal Gland cDNA Library
Chong, Nelson W.
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The pineal gland is the circadian oscillator in the chicken, regulating diversefunctions ranging from egg laying to feeding. Here, we describe the isolation andcharacterization of expressed sequence tags (ESTs) isolated from a chicken pinealgland cDNA library. A total of 192 unique sequences were analysed and submittedto GenBank; 6% of the ESTs matched neither GenBank cDNA sequences nor thenewly assembled chicken genomic DNA sequence, three ESTs aligned with sequencesdesignated to be on the Z_random, while one matched a W chromosome sequence andcould be useful in cataloguing functionally important genes on this sex chromosome.Additionally, single nucleotide polymorphisms (SNPs) were identified and validatedin 10 ESTs that showed 98% or higher sequence similarity to known chicken genes.Here, we have described resources that may be useful in comparative and functionalgenomic analysis of genes expressed in an important organ, the pineal gland, in amodel and agriculturally important organism.