Human hepatic triglyceride lipase: cDNA cloning, amino acid sequence and 
expression in a cultured cell line

Stahnke, Gisela; Sprengel, Rolf; Augustin, Jan; Will, Hans

doi:10.1111/j.1432-0436.1987.tb00150.x

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Human hepatic triglyceride lipase: cDNA cloning, amino acid sequence and expression in a cultured cell line

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Sprengel, Rolf
Department of Molecular Neurobiology, Max Planck Institute for Medical Research, Max Planck Society;
Rolf Sprengel Group, Max Planck Institute for Medical Research, Max Planck Society;
Olfaction Web, Max Planck Institute for Medical Research, Max Planck Society;

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https://www.sciencedirect.com/science/article/pii/S030146811160371X/pdf?md5=801c6349a84fb350ec40abbb4795f122&pid=1-s2.0-S030146811160371X-main.pdf
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引用

Stahnke, G., Sprengel, R., Augustin, J., & Will, H. (1987). Human hepatic triglyceride lipase: cDNA cloning, amino acid sequence and expression in a cultured cell line. Differentiation, 35(1), 45-52. doi:10.1111/j.1432-0436.1987.tb00150.x.

引用: https://hdl.handle.net/21.11116/0000-0000-BFE0-C

要旨

By immunoscreening of a human cDNA expression library and hybridization of colonies, four partially overlapping cDNA clones of human hepatic triglyceride lipase (HTGL) mRNA were isolated. The clones included the complete coding sequence, the 3'- and at least part of the 5'-untranslated region. The length of the composite HTGL cDNA segment (1.7 kb) was consistent with the size of the mRNA identified in an established human hepatoma cell line. DNA-sequence analysis of cDNAs of partially unspliced mRNAs, and of cloned genomic DNA indicated that the HTGL coding sequence comprises at least six exons. As predicted from the cDNA, the unprocessed HTGL protein has a molecular weight of 56, three potential glycosylation sites, and a signal peptide of 23 amino acids. Sequence comparison with cDNA of other lipases, including rat hepatic lipase, revealed 30%-75% protein-sequence homology. The data establish that HTGL is a secretory protein produced in the hepatocyte, and that its synthesis can be continued in permanent cell lines of hepatoma origin. Our studies also showed that HTGL is another member of a lipase gene family which has interfacial binding sites and possibly other functional domains in common.