What is the conformation of the glycosidic bond (i.e. orientation of the nucleobase relative to the the sugar) in the B-form of DNA? syn anti alpha hetero
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What is the conformation of the glycosidic bond (i.e. orientation of the nucleobase relative to the the sugar) in the B-form of DNA?
syn
anti
alpha
hetero
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- How many kilobases of the DNA strand below will code for the protein product?Using Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw the complementary dinucleotide in an antiparallel fashion. Connect the dinucleotides with the appropriate hydrogen bonds. FIGURE 8.9 The two polynucleotide chains in DNA run in opposite directions. The left strand runs 5 to 3, and the right strand runs 3 to 5. The base sequences in each strand are complementary. An A in one strand pairs with a T in the other strand, and a C in one strand is paired with a G in the opposite strand. FIGURE 8.7 Nucleotides can be joined together to form chains caled polynucleotides. Polynucleotides are polar molecules with a 5 end (at the phosphate group) and a 3 end (at the sugar group). An RNA polynucleotide is shown at the left, and a DNA polynucleotide is shown at the right.State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helix
- DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What are the consequences of this difference in strength?What is the term applied to the trinucleotide shown by the arrow? 5' Py U AU AGGCC G C G ACCACCUGeDescribe the d=features of the following DNA-binding domains and how they interact with DNA. Helix-turn-Helix Zinc Finger Leucine Zipper Helix-loop-Helix
- A segment of a polypeptide chain is Arg-Gly-Ser-Phe-Val-Asp-Arg. It is encoded by the following segment of DNA: G G C T A G C T G C T T C C T T G G G G A C C G A T C G A C G A A G G A A C C C C T Template strand with its polarity: 3’ C C G A T C G A C G A A G G A A C C C C T 5’ - Coding strand with its polarity: 3’ G G C T A G C T G C T T C C T T G G G G A 5’ Please write out the mRNA sequence generated by the template strand to produce that polypeptide chain.In the DNA double-helix structure, the larger of the two grooves formed by the helical twist where certain base pairs are exposed is called the:The DNA STRAND IS 3’ TAC-AGC-ACT-CAG-TCA 5’ and Non-template strand = 5' - ATG-TCG-TGA-GTC-AGT - 3' . If on the non-coding strand of DNA there is suddenly one T base that sneaks into the 4th sequence (from the left), or causes a mutation, then how will the RNA be formed and the chain arrangement of the amino acids produced by this mutation? 4th sequence (from the left) should be = TCG right?
- Draw the syn conformation of purine residues in Z-DNA.Permutation is the ordered arrangement of m number items out of a list of n items. For instance, the DNA strand with sequence of 3 bases: G-A-C IS different w ith A-G-C, C-A-G, G-C-A, A-C-G, and C-G-A. From this, we have: P-3) 3! 3x2x1 Therefore, there are 6 dıfferent sequences of DNA strands that can be formed out of 3 given bases. In general, we have this formula for permutation: (n-m)! Count the number of ways in which: Guanıne, Adenine, Cytosine, Thymıne, Cytosine, and Guanıne (6 bases) be sequenced in one DNA strand?The DNA STRAND IS 3’ TAC-AGC-ACT-CAG-TCA 5’, and Non-template strand = 5' - ATGTCGTGAGTCAGT - 3' . If on the non-coding strand of DNA there is suddenly one T base that sneaks into the 4th sequence (from the left), or causes a mutation, then how will the RNA be formed and the chain arrangement of the amino acids produced by this mutation?