chemical structure of DNA and RNAThe nucleic acids of DNA and RNA are heterocycles. Purines, such as adenine and guanine, each possess both a five- and a six-membered ring, with each ring containing two nitrogen atoms. Pyrimidine bases, such as cytosine, guanine, and uracil (in RNA), ea...
The present invention relates to poly- and oligonucleotides, particularly to DNA and RNA probes and PCR primers, methods of their production and their use in restriction fragment length polymorphism (RPLP) and minisatellite variation repeat mapping analysis (MVRM). The probes of the invention have ...
Fig. 62Base analogue. The action of 5-bromouracil onDNA. base analogue any chemical that has a similar structure (i.e. is analogous) to one of the purine or pyrimidine bases inDNAorRNA. Such analogues can become incorporated into the nucleic acid and may act as aMUTAGEN. For example, ...
Each nucleoside in DNA and RNA contains one of four possible nitrogenous bases. In DNA, these are adenine, guanine, cytosine and thymine. In RNA, the first three are present, but uracil is substituted for the thymine found in DNA. Adenine and guanine belong to a class of compounds calledpu...
The results show that all ten strains of influenza A virus contain an identical number of nucleotides (1027 bases) in RNA segment 7 and an identical number of amino acids in Ml (252 aa) and M2 (97 aa) proteins. The observed amino acid changes are conservative in nature suggesting the ...
The first nuclotide sequence of a human variable lambda gene belonging to subgroup II and designated as VX2.1 is reported. This gene was isolated from the genomic X27S library (clone X27SVX2). That library was made with the DNA of a member of the family 27S, caracterized by two excepti...
The nucleotide sequence of the large (L) genomic RNA segment of Seoul 80-39 virus was determined from overlapping cDNA clones. The virion L RNA segment is 6530 nucleotides long. The 3' and 5' terminal sequences are inversely complementary for 15 bases. The viral complementary-sense RNA contai...
Here, we discuss the significance of DNA and RNA polymerase enzyme kinetics in the scope of the availability of nucleotide substrates, which can vary significantly in cells. Also, because nucleoside/nucleotide analogs, which are extensively used as anti-cancer and anti-viral pathogen agents, compete...
Purines and Pyrimidines:A basic crystalline compound that forms hydrogen bonds. They are the two basic types of nitrogenous bases that form the nucleotide bases found in DNA and RNA. Monomer:A molecule that can be bonded to other identical molecules to make a polymer (see below). Remember th...
If an organism's DNA contains 20% adenine nucleotides, what percentage of its DNA is composed of guanine nucleotides? a. 15% b. 10% c. 30% d. 40% If cytosine makes up 27% of the bases in a dna double helix and guanine, what percentage of the bases are adenine? a...