BioScience Dictionary

 
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Ot.

Found Thymine 26 times.

Displaying results 1 to 10.

1. 5-fluorouracil (5-FU)
An anti- cancer agent similar in structure to the nitrogenous base thymine , which inhibits the enzyme dihydrofolate reductase (DHFR) and thus nucleotide synthesis, so that it is particularly harmful to rapidly growing cells such as in tumors .

2. Adenine
A nitrogenous base, one member of the base pair A- T ( adenine - thymine ).

3. Apyrimidinic site
A site on DNA where a base is missing, in this case a pyrimidine (either cytosine or thymine ), but the phosphodiester backbone is still intact. Compare with apurinic site.

4. AT content
The percentage of nitrogenous base s on a DNA molecule which are either adenine or thymine (from a possibility of four different ones, also including cytosine and guanine ). Also see GC content .

5. AT/GC ratio
The ratio of adenine - thymine base pair s to guanine - cytosine base pairs on a DNA molecule.

6. Base composition
In reference to nucleic acid, the proportion of the total bases consisting of guanine plus cytosine or thymine plus adenine base pairs. Usually expressed as a guanine + cytosine (G+C) value, e.g. 60% G+C.

7. Base pair (bp)
Two nitrogenous bases ( adenine and thymine or guanine and cytosine ) held together by weak bonds. Two strands of DNA are held together in the shape of a double helix by the bonds between base pairs.

8. Complementary base pairing
The pairing of complementary nucleotide base s ( adenine and thymine , guanine and cytosine ) to each other via hydrogen bond s from opposite strands of a double stranded nucleic acid (such as DNA or RNA ), thereby holding the double-stranded nucleic acid together.

9. Complementary nucleotides
The bonding preferences of nucleotides, Adenine with thymine , and Cytosine with Guanine . Also referred to as complementary base pairing.

10. DNA (deoxyribonucleic acid)
The molecule that encodes genetic information. DNA is a double-stranded molecule held together by weak bonds between base pair s of nucleotide s. The four nucleotides in DNA contain the bases: adenine (A), guanine (G), cytosine (C), and thymine (T). In nature, base pairs form only between A and T and between G and C; thus the base sequence of each single strand can be deduced from that of its partner.


View web definitions »

Learn more about Thymine »