Isolation and characterization of the human hepatic lipase gene

Overlapping bacterial phage and cosmid genomic clones were isolated spanning an area of approximately 60 kilobases that contains the human hepatic lipase (HL) gene. It is composed of 9 exons spanning approximately 35 kilobases of DNA. The entire coding regions, the 5'-flanking sequences, and th...

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Veröffentlicht in:The Journal of biological chemistry 1990-04, Vol.265 (12), p.6552-6555
Hauptverfasser: AMEIS, D, STAHNKE, G, KOBAYASHI, J, MCLEAN, J, LEE, G, BUSCHER, M, SCHOTZ, M. C, WILL, H
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container_end_page 6555
container_issue 12
container_start_page 6552
container_title The Journal of biological chemistry
container_volume 265
creator AMEIS, D
STAHNKE, G
KOBAYASHI, J
MCLEAN, J
LEE, G
BUSCHER, M
SCHOTZ, M. C
WILL, H
description Overlapping bacterial phage and cosmid genomic clones were isolated spanning an area of approximately 60 kilobases that contains the human hepatic lipase (HL) gene. It is composed of 9 exons spanning approximately 35 kilobases of DNA. The entire coding regions, the 5'-flanking sequences, and the exon-intron junctions were sequenced. The intron positions correspond to those of human lipoprotein lipase and canine pancreatic lipase, supporting the concept that these genes constitute a dispersed gene family of lipases and have evolved by duplication of a common ancestral gene. A region of the HL gene, which displays a significant homology with various other lipolytic enzymes and contains the putative catalytic site serine residue of HL, was encoded by exon 4. A major transcription start site of the human HL gene was located by primer extension analysis, 43 nucleotides upstream of the translation initiation codon. Two possible promoter elements were located 25 and 63 nucleotides upstream of the transcription initiation site: a "TATA" box-like sequence, TAATA, and a sequence found in the promoter region of many liver-specific genes, AGGTTAATTATTAAT. In addition, sequences homologous to glucocorticoid and cAMP-responsive elements were identified in the 5'-nontranscribed region.
doi_str_mv 10.1016/s0021-9258(19)39182-3
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subjects Amino Acid Sequence
Animals
Base Sequence
Biological and medical sciences
Cloning, Molecular
Codon - genetics
DNA - genetics
DNA - isolation & purification
Exons
Fundamental and applied biological sciences. Psychology
Genes
Genes. Genome
Genomic Library
Humans
Lipase - genetics
liver
Liver - enzymology
Molecular and cellular biology
Molecular genetics
Molecular Sequence Data
Restriction Mapping
Species Specificity
Transcription, Genetic
title Isolation and characterization of the human hepatic lipase gene
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