Biomaterial Database

Human spermidine synthase gene: structure and chromosomal localization. 1991

S Myöhänen, and L Kauppinen, and J Wahlfors, and L Alhonen, and J Jänne

Department of Biochemistry & Biotechnology, University of Kuopio, Finland.

The human spermidine synthase (EC 2.5.1.16) gene was isolated from a genomic library constructed with DNA obtained from a human immunoglobulin G (IgG) myeloma cell line. Subsequent sequence analyses revealed that the gene comprised of 5,818 nucleotides from the cap site to the last A of the putative polyadenylation signal with 8 exons and 7 intervening sequences. The 5'-flanking region of the gene was extremely GC rich, lacking any TATA box but containing CCAAT consensus sequences. No perfect consensus sequence for the cAMP-responsive element for the AP-1 binding site was found, yet the gene contained seven AP-2 binding site consensus sequences. The putative polyadenylation signal was an unusual AATACA instead of AATAAA. Polymerase chain reaction analysis with DNA obtained from human x hamster somatic cell hybrids indicated that human spermidine synthase genomic sequences segregate with human chromosome 1. Transfection of the genomic clone into Chinese hamster ovary cells displaying a low endogenous spermidine synthase activity revealed that the gene was transiently expressed and hence in all likelihood represents a functional gene.

UI	MeSH Term	Description	Entries
D008969	Molecular Sequence Data	Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.	Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D011436	Spermidine Synthase	An enzyme that catalyzes the transfer of the propylamine moiety from 5'-deoxy-5'-S-(3-methylthiopropylamine)sulfonium adenosine to putrescine in the biosynthesis of spermidine. The enzyme has a molecular weight of approximately 73,000 kDa and is composed of two subunits of equal size.	Aminopropyltransferase,Propylamine Transferase,Spermidine Synthetase,Putrescine Aminopropyltransferase,Aminopropyltransferase, Putrescine,Synthase, Spermidine,Synthetase, Spermidine,Transferase, Propylamine
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell
D002878	Chromosomes, Human, Pair 1	A specific pair of human chromosomes in group A (CHROMOSOMES, HUMAN, 1-3) of the human chromosome classification.	Chromosome 1
D004247	DNA	A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).	DNA, Double-Stranded,Deoxyribonucleic Acid,ds-DNA,DNA, Double Stranded,Double-Stranded DNA,ds DNA
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006822	Hybrid Cells	Any cell, other than a ZYGOTE, that contains elements (such as NUCLEI and CYTOPLASM) from two or more different cells, usually produced by artificial CELL FUSION.	Somatic Cell Hybrids,Cell Hybrid, Somatic,Cell Hybrids, Somatic,Cell, Hybrid,Cells, Hybrid,Hybrid Cell,Hybrid, Somatic Cell,Hybrids, Somatic Cell,Somatic Cell Hybrid
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001483	Base Sequence	The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.	DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D014162	Transfection	The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.	Transfections