If the two complementary bases were connected by ionic or covalent bonds, then the helicase would be unable to unzip the two strands at the beginning of DNA replication and also, the polymerases could not be able to reconnect two complementary bases or ligase would not be able to recombine th...
Base pairing in DNA: Watson-Crick base pairs (guanine-cytosine and adenine-thymine) allow the DNA helix to maintain a regular helical structure. The complementary base pairing is dependent upon the molecular interactions between the various chemical ...
Describe the complementary base pairing between the two individual strands of DNA that forms the overall double-helical structure. Explain the classification system for enzymes. What sugar is used in the backbone of DNA molecules? DNA carries the information for life: a. in the super coiled portio...
DNA (dē′ĕn-ā′) n. A nucleic acid that carries the genetic information in cells and some viruses, consisting of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. DNA sequence...
Finally, we set out to investigate how intercalators and their kinetics have an impact on DNA overstretching and enzymatic processing of DNA. DNA overstretching is a cooperative transition during which the two complementary DNA strands can unwind and—depending on the salt conditions—separate (melt...
The crystal structures of five double helical DNA fragments containing non-Watson-Crick complementary base pairs are reviewed. They comprise four fragments containing G路T base pairs: two deoxyoctamers d(GGGGCTCC) and d(GGGGTCCC) which crystallise as A type helices; a deoxydodecamer d(CGCGAAT...
() 答案: 无义突变 The most important form causing DNA damage is (?? ) which produces pyrimidine dimers from adjacent pyrimidine bases. 答案: UV light ___ of the DNA after replication allows the daughter strand to be distinguished from the parental strand.() 答案: Hemimethylation Homologous...
To quantify expression of target genes, 100 mg of roots from the fine sand layer were flash frozen in liquid nitrogen. Total RNA was extracted using the RNeasy Plant Mini Kit (Qiagen) and corresponding DNase. Complementary DNA synthesis was conducted using the SuperScript IV Reverse Transcriptas...
What is single-stranded DNA-binding protein? What structure of DNA stores information? Which pair of complementary bases in DNA binds more strongly and why? What feature of DNA replication makes it semiconservative? What are the 2 things that the sides of the DNA molecules consist of?
Base pairing between the two strands of DNA occurs by means of: a) Hydrogen bonding b) Coordinate covalent bonds c) Ionic bonds d) Disulfide bonds DNA Strands The DNA has a double helix chemical structure. The nucleobases...