Pig whey acidic protein gene is surrounded by two ubiquitously expressed genes.
[No authors listed]
摘要
A 140-kb pig DNA fragment containing the whey acidic protein (WAP) gene cloned in a bacterial artificial chromosome (BAC344H5) has been shown to contain all of the cis-elements necessary for position-independent, copy-dependent and tissue-specific expression in transgenic mice. The insert from this BAC was sequenced. This revealed the presence of two other genes with quite different expression patterns in pig tissues and in transfected HC11 mouse mammary cells. The RAMP3 gene is located 15 kb upstream of the WAP gene in reverse orientation. The CPR2 gene is located 5 kb downstream of the WAP gene in the same orientation. The same locus organization was found in the human genome. The region between RAMP3 and CPR2 in the human genome contains a WAP gene-like sequence with several points of mutation which may account for the absence of WAP from human milk.
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基因功能
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原始数据
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文献解读
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