a) Draw helical wheels for each of the following two sequences. 1) E-L-K-D-L-S-K-S 2) L-R-K-L-E-R-S-L b....
one sequence contains E-L-K-D-L-S-K-S and the other contains L-R-K-L-E-R-S-L. please draw helical wheels and identify the interactions between the 2 wheels. What secondary structure does this form?
The following amino acid sequence is observed in an alpha-helical segment of a polypeptide: L D E N I K R N A Q L V E Q Q I R What pattern, if any, seems to characterize this sequence? Explain why this pattern might be occurring in terms of the 3D structure of the protein.
1. The following amino acid sequence is observed in an alpha-helical segment of a polypeptide: L D E N I K R N A Q L V E Q Q I R What pattern, if any, seems to characterize this sequence? Explain why this pattern might be occurring in terms of the 3D structure of the protein. 2. Indicate the probable location of the following amino acid residues in a native globular protein. a) Asp b) Phe c) Met d)...
Which of the following can form a covalent bond between the two sequences under non-reducing conditions? Sequences C and D Sequences A and H Sequences B and E Sequences A and C Sequences F and G Which of the following sequences can form an alpha-helix with hydrophobic residues only along one face of the helix, and hydrophilic residues only along the other face of the helix? Sequence F Sequence G Sequence H Sequence E Sequence B Which of the following...
25. Consider two peptide sequences: LKAENDEAARAMSEA and CRAGGFPWDQPGTSN. Which of the two is more likely to adopt an alpha-helical structure? Why? 26. A beta strand is a stretch of residues in the extended conformation that can participate in a beta sheet. (In the figure at right, beta strands A and B participate in a two-strand sheet.) What sorts of hydrogen bonds are required for the formation of single beta strands and for the formation of beta sheets? backbone- backbone sidechain...
25. Consider two peptide sequences: LKAENDEAARAMSEA and CRAGGFPWDQPGTSN. Which of the two is more likely to adopt an alpha-helical structure? Why? 26. A beta strand is a stretch of residues in the extended conformation that can participate in a beta sheet. (In the figure at right, beta strands A and B participate in a two-strand sheet.) What sorts of hydrogen bonds are required for the formation of single beta strands and for the formation of beta sheets? backbone- backbone sidechain...
Compare the solutions the results in I(d) and 2(d). to Show that the following sequences converge linearly to p 0. How large must n be before Ip -pl s 10- p" =-, ,121 1t a Show that for any positive integer k, the sequence defined by pa 1/n converges linearly to For each pair of integers k and m. determine a number N for which i/Nk<10m 8. a. Show that the sequence p, 10converges quadratically to 0. Show that the...
Hi, please help 1)Draw two molecules that could hydrogen bond with each other. Draw and indicate the H-bond and label which is the donor and acceptor. 2) Look up the structure of the subunit of hemerythrin, an oxygen binding protein from invertebrates. It has been found that in some α-helical regions of the protein, about every third or fourth amino acid residue is a hydrophobic one. Suggest a reason for this finding, based on the structure you found. 3) Which...
A normal chromosome has the following sequence: L M N O o P Q R S T (o = centromere). Name the type of chromosomal aberration present in each of the following chromosomes which arose from the original sequence shown above, being as specific as possible. Then draw how the chromosomes line up during meiosis L O o P Q R S T: L M N O o P Q R S T: L M N Q P o O...
Organic Chemistry Questions F G H e, Draw the skeletal structure of and categorize the following substrates which you will use in this experiment as a primary, secondary, tertiary, or aryl halide. 2-chlorobutane 2-bromobutans 1-chlorobutane 1-bromobutane bromobenzene f. Draw the SN2 mechanism of the reaction between (S)-2-bromobutane and iodide ion. Show lone pairs, electron pushing arrows, 3-D view to reflect appropriate stereochemistry, reactants, transition states, and products. Name the product. Draw and completely label a reaction energy diagram corresponding to...