Plastic model of a DNA molecule (B form). Physically precise model 1:20,000,000

Plastic model of a DNA molecule (B form). Physically precise model 20 000 000:1

The colored model of one turn of a double spiral DNA molecule made to order on the basis of X-ray crystallography data. Scale 20 000 000:1.
In a living cell the majority of DNA molecules exist in B form. At this state the bases cyrcles are nearly perpendicular to the helical axis, and each base pair is twisted 36 degrees relative to the adjacent bases. Each complete turn of the molecule encompasses 3.4 nm that is 10 base pairs (9.7 and 10.6 in different crystals).

The model is made of solid plastic; its length is 15 cm. The price of the model is USD 300 (a model twice as little as the presented one will cost approximately USD 100).

More:
DNA images (A, B, and Z forms).
Ultraviolet-induced DNA damage: DNA-photolyase.

DNA images distributed with the licence. End user licence agreement.

The picture was repeatedly used in press and in online resources, including:
News portal Lenta.ru (December 10, 2008) «Geneticists deciphered half of the genome of Neanderthal man»;

Russian News and Information Agency «RIA Novosti» (September 5, 2008) «Computational biology and bioinformatics»;

RIA Novosti (September 2, 2008) «Genes contain information about a person's birthplace»;

RIA Novosti (August 8, 2008) «Leukocytes fight bacteria using DNA «catapults»;

News portal Lenta.ru (July 15, 2008);

Online journal Nanopanorama, № 2, of the Rosatom's Center for Nano-Technologies and Nano-Materials (November 30, 2007);

Computerra Journal № 44 (712) and Computerra Journal Online, the article «The image of invisible» (November 27, 2007).

Baikalov I., Grzeskowiak K., Yanagi K., Quintana J., Dickerson R. E. The crystal structure of the trigonal decamer C-G-A-T-C-G-6meA-T-C-G: a B-DNA helix with 10.6 base-pairs per turn. J. Mol. Biol., 231; 768-784 (1993)

Plastic model of a DNA molecule (B form). Physically precise model 20 000 000:1