Cytosine - Law Dictionary Search Results
Home Dictionary Name: cytosinecytosine
A pyrimidine C4H5N3O which is one of the four major basic components of DNA and RNA in most organisms forming glyosides with ribose and deoxyribose It is the basic component of cytidine deoxycytidine cytosine cytidine monophosphate and derivatives of those compounds...
base pair
a unit of double stranded DNA or RNA consisting of two complementary bases on opposing strands of the double stranded polynucleotide bound together by hydrogen bonds and other non covalent chemical forces The bases comprising the base pairs are adenine thymine cytidine and guanine In normal DNA the base adenine on one strand of DNA pairs with thymine on the opposite strand and cytosine on one strand pairs with guanine on the opposite strand The term base pair usually includes the sugar ribose or deoxyribose and the phosphate bound to each base to form a nucleotide unit One base pair is sometimes used as a unit of length or size for DNA and in this usage is abbreviated bp as a 100 bp fragment of DNA A length of 1000 base pairs is a kilobase pair or kbp...
nucleoside
A type of molecule found in all living organisms present mostly in chemically combined form as a component of nucleic acids and also in smaller amounts in free form consisting of a pentose sugar bound to a purine or pyrimidine base two types of nucleoside ribonucleoside and deoxyribonucleoside are present The most common bases present in nucleosides are adenine cytosine uracil guanine and thymine and to a lesser extent hypoxanthine and other bases are found The most commmon ribonucleosides composed from these bases are called adenosine cytidine uridine and guanosine The forms esterified with orthophosphoric at the 5 position of the pentose are called nucleotides The nucleotides form the monomer units which are combined into DNA and RNA which carry the genetic information required for reproduction in all known organisms...
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