Biomaterial Database

Characterization of the effects on ovalbumin mRNA of aminomethyl-trimethylpsoralen photoreaction with hen oviduct mRNA. 1987

C D Liarakos, and G Reinhart, and R A Kopper, and R P Maddox

Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock 72205.

We have described the reaction of 4'-aminomethyl-4,5',8-trimethylpsoralen (AMT) with hen oviduct mRNA and have investigated the specific effects of AMT photoaddition on ovalbumin mRNA which constitutes 60-70% of oviduct mRNA. The photoreaction of AMT with hen oviduct mRNA appeared to occur in two phases - a rapid monoaddition followed by a slower conversion of monoadducts to diadducts (i.e. crosslinking). Both nondenaturing and denaturing gel electrophoresis revealed a photoreaction time dependent increase in ovalbumin mRNA electrophoretic mobility indicating the formation of a progressively more compact molecular structure. Identical analysis of photoreacted rabbit globin mRNA revealed no change in electrophoretic mobility suggesting that AMT was stabilizing the AU rich secondary structure of ovalbumin mRNA but having no similar effect on the relatively GC rich secondary structure of globin mRNA. Ovalbumin-specific DNA primer extension was used to demonstrate the selective and secondary structure specific photoaddition of AMT to uracil bases at the 5' end of ovalbumin mRNA.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008970	Molecular Weight	The sum of the weight of all the atoms in a molecule.	Molecular Weights,Weight, Molecular,Weights, Molecular
D009690	Nucleic Acid Conformation	The spatial arrangement of the atoms of a nucleic acid or polynucleotide that results in its characteristic 3-dimensional shape.	DNA Conformation,RNA Conformation,Conformation, DNA,Conformation, Nucleic Acid,Conformation, RNA,Conformations, DNA,Conformations, Nucleic Acid,Conformations, RNA,DNA Conformations,Nucleic Acid Conformations,RNA Conformations
D010047	Ovalbumin	An albumin obtained from the white of eggs. It is a member of the serpin superfamily.	Serpin B14
D010057	Oviducts	Ducts that serve exclusively for the passage of eggs from the ovaries to the exterior of the body. In non-mammals, they are termed oviducts. In mammals, they are highly specialized and known as FALLOPIAN TUBES.	Oviduct
D011564	Furocoumarins	Polycyclic compounds consisting of a furan ring fused with coumarin. They commonly occur in PLANTS, especially UMBELLIFERAE and RUTACEAE, as well as PSORALEA.	Furanocoumarin,Furanocoumarins,Furocoumarin,Psoralens,Angelicins
D002645	Chickens	Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA.	Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D003432	Cross-Linking Reagents	Reagents with two reactive groups, usually at opposite ends of the molecule, that are capable of reacting with and thereby forming bridges between side chains of amino acids in proteins; the locations of naturally reactive areas within proteins can thereby be identified; may also be used for other macromolecules, like glycoproteins, nucleic acids, or other.	Bifunctional Reagent,Bifunctional Reagents,Cross Linking Reagent,Crosslinking Reagent,Cross Linking Reagents,Crosslinking Reagents,Linking Reagent, Cross,Linking Reagents, Cross,Reagent, Bifunctional,Reagent, Cross Linking,Reagent, Crosslinking,Reagents, Bifunctional,Reagents, Cross Linking,Reagents, Cross-Linking,Reagents, Crosslinking
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
D005260	Female		Females