Z-DNA

Z-DNA
zig-zag (left-handed helical) deoxyribonucleic acid

* * *

Z-DNA 'zē- n the left-handed uncommon form of double helix DNA in which the chains twist up and to the left around the front of the axis of the helix and which has 12 base pairs in each helical turn and one groove on the external surface compare B-DNA

* * *

a double helical structure assumed by double-stranded DNA, in which the phosphate groups form a dinucleotide repeating unit zigzagging up a left-handed helix with a single, deep groove; it is particularly likely to occur in stretches of alternating purines and pyrimidines or under dehydrating conditions. Cf. A-DNA and B-DNA.

Medical dictionary. 2011.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • DNA replication — DNA replication. The double helix is unwound and each strand acts as a template for the next strand. Bases are matched to synthesize the new partner strands. DNA replication is a biological process that occurs in all living organisms and copies… …   Wikipedia

  • DNA nanotechnology — seeks to make artificial, designed nanostructures out of nucleic acids, such as this DNA tetrahedron.[1] Each edge of the tetrahedron is a 20 base pair DNA double helix, and each vertex is a three arm junction. DNA n …   Wikipedia

  • DNA-encoded chemical library — DNA encoded chemical libraries (DEL) are a new technology for the synthesis and screening of collections of chemical compounds of unprecedented size and quality. DEL represents an advance in medicinal chemistry which bridges the fields of… …   Wikipedia

  • DNA nanoball sequencing — is a high throughput sequencing technology that is used to determine the entire genomic sequence of an organism. The method uses rolling circle replication to amplify small fragments of genomic DNA into DNA nanoballs. Fluorescent probes bind to… …   Wikipedia

  • DNA ligase — repairing chromosomal damage Identifiers EC number 6.5.1.1 …   Wikipedia

  • DNA computing — is a form of computing which uses DNA, biochemistry and molecular biology, instead of the traditional silicon based computer technologies. DNA computing, or, more generally, biomolecular computing, is a fast developing interdisciplinary area.… …   Wikipedia

  • DNA barcoding — is a taxonomic method that uses a short genetic marker in an organism s DNA to identify it as belonging to a particular species. It differs from molecular phylogeny in that the main goal is not to determine classification but to identify an… …   Wikipedia

  • DNA-Replikation — DNA Replikation. Die Doppelhelix wird durch die Helicase und die Topoisomerase geöffnet. Danach setzt die Primase einen Primer und die …   Deutsch Wikipedia

  • DNA condensation — refers to the process of compacting DNA molecules in vitro or in vivo.[1] Mechanistic details of DNA packing are essential for its functioning in the process of gene regulation in living systems. Condensed DNA often has surprising properties,… …   Wikipedia

  • DNA mismatch repair — is a system for recognizing and repairing erroneous insertion, deletion and mis incorporation of bases that can arise during DNA replication and recombination, as well as repairing some forms of DNA damage.[1][2] Mismatch repair is strand… …   Wikipedia

  • DNA-Polymerase — Bänderdarstellung der DNA bindenden Domäne der humanen DNA Polymerase β …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”