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Characterization of a human Sec14-like protein cDNA SEC14L3 highly homologous to human SPF/TAP
Authors:Ye  Xin  Ji  Chaoneng  Yin  Gang  Tang  Rong  Zeng  Li  Gu  Shaohua  Ying  Kang  Xie  Yi  Chunhua Zhao  Robert  Mao  Yumin
Institution:State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai 200433, People's Republic of China.
Abstract:Supernatant protein factor (SPF) and alpha-tocopherol-associated protein (TAP) both belong to a widespread lipid-binding Sec 14-like protein family. All the members of the family have the lipid-binding motif called CRAL_TRIO. SPF is showed to stimulate the conversion of squalene to lanosterol and enhance cholesterol biosynthesis. TAP is identified to be involved in the intracellular distribution of alpha-tocopherol. Recently TAP is identified as SPF though they have very different functions. Here we report a human SPF/TAP homology SEC14L3 with 2082 base pairs in length and contains an open reading frame encoding a 400 amino acids protein. Analysis shows that SEC14L3 is mapped to 22q12 and expresses only in the liver among the used sixteen tissues in the test.
Keywords:Sec14-like protein  lipid-binding domain  SPF/TAP  cholesterol biosynthesis
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