Synthetic polyamines stimulate in vitro transcription by T7 RNA polymerase.
The influence of nine synthetic polyamines on in vitro transcription with T7 RNA polymerase has been studied. The compounds used were linear or macrocyclic tetra- and hexaamine, varying in their size, shape and number of protonated groups. Their effect was tested on different types of templates, all presenting the T7 RNA promoter in a double-stranded form followed by sequences encoding short transcripts (25 to 35-mers) either on single- or double-stranded synthetic oligodeoxyribonucleotides. All polyamines used stimulate transcription of both types of templates at levels dependent on their size, shape, protonation degree, and concentration. For each compound, an optimal concentration could be defined; above this concentration, transcription inhibition occurred. Highest stimulation (up to 12-fold) was obtained by the largest cyclic compound called [38]N6C10.
Frugier
M
M
UPR Structure des Macromolécules Biologiques et Mécanismes de Reconnaissance Institut de Biologie Moléculaire et Cellulaire du CNRS, Strasbourg, France.
Florentz
C
C
Hosseini
M W
MW
Lehn
J M
JM
Giegé
R
R
D017123:Bacteriophage T7 / Q000201:enzymology; D001483:Base Sequence; D012321:DNA-Directed RNA Polymerases / Q000187:drug effects / Q000378:metabolism*; D007700:Kinetics; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009690:Nucleic Acid Conformation; D009838:Oligodeoxyribonucleotides; D011073:Polyamines / Q000737:chemistry / Q000494:pharmacology*; D011401:Promoter Regions, Genetic; D012366:RNA, Transfer, Val / Q000096:biosynthesis* / Q000737:chemistry; D013329:Structure-Activity Relationship; D013698:Templates, Genetic; D014158:Transcription, Genetic / Q000187:drug effects*; D014764:Viral Proteins
D009838:Oligodeoxyribonucleotides; D011073:Polyamines; D012366:RNA, Transfer, Val; D014764:Viral Proteins; C062210:bacteriophage T7 RNA polymerase; D012321:DNA-Directed RNA Polymerases