1. Draw a cis and a trans peptide bond involving glycine (at the N-terminal side of the peptide bond) and a proline (at C-terminal side of the peptide bond).
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1. Draw a cis and a trans peptide bond involving glycine (at the N-terminal side of...
The peptide bond in proteins is A. only found between proline residues. B. usually cis unl ess proline is the next amino acid. C. usually trans unless proline is the next amino acid. D. is planar because of steric hinderance. E. defines one of the angles used in the Ramachandran plot.
There are peptide bonds in the molecule below. The N-terminal amino acid is Choose... The C-terminal amino acid is Choose... V NH₃ NH₃ Air ОН 90- NH Choose... glycine alanine valine leucine isoleucine serine threonine cysteine methonine aspartate glutamate asparagine glutamine lysine arginine phenylalanine tyrosine proline histidine
options There are peptide bonds in the molecule below. The N-terminal amino acid is Choose... The C-terminal amino acid is Choose... V NH3 NHE ОН 90- NH Choose... glycine alanine valine leucine isoleucine serine threonine cysteine methonine aspartate glutamate asparagine glutamine lysine arginine phenylalanine tyrosine proline histidine
2) Draw the dipeptide N-terminal end and Ser-Gly, dabel the the C-terminal end. Circle the peptide bond.
The one-letter sequence is: WATER a) Draw the peptide (R-groups trans), indicating charges, in predominant form found at pH = 0. b) What is the isoelectric point? c) What is the average charge on the population of peptide macromolecules at pH = 2.2? d) What is the average charge on the population of peptide macromolecules at pH = 12.5? TABLE 4.1 Amino Acid Alanine Arginine Asparagine Aspartic acid Cysteine....« Glutamic acid Glutamine Glycine Histidine Isoleucine Leucine Lysine … Methionine Phenylalanine...
Amides exist as cis and trans isomers about the C-N bond between the carbonyl carbon and the nitrogen. Most single bonds are freely rotating (like we talked about last semester with Newman projections). Explain why this C-N bond is different. (5 pts) cis-amide trans-amide
2. Amides exist as cis and trans isomers about the C-N bond between the carbonyl carbon and the nitrogen. Most single bonds are freely rotating (like we talked about last semester with Newman projections). Explain why this C-N bond is different. (5 pts) - cis-amide trans-amide
Draw the structures of each compound listed in Table 1 using dash-wedge notation. Compound Drawing Internal Mirror Plane? Chiral? (Y/N) ADsolute Configuration (RAS) cis-1,3- dimethylcyclobutane trans-1,3- dimethylcyclobutane cis-1,2- dimethylcyclobutane trans-1,2- dimethylcyclobutane 2-butanol Meso-2,3 butanediol Glycine (aminoacetic acid) Proline (model both enantiomers) Isoleucine (choose TWO stereoisomers) 1,3 dichloro-allene (CHCI)
2. Draw the structures of the cis-trans isomers for each compound. Label them cis and trans. If no cis-trans isomers exist, write none. a. 2,3-dimethyl-2-pentene b. 1,1-dimethyl-2-ethylcyclopropane c. 1,2-dimethylcyclohexane d. 5-methyl-2-hexene e. 1,2,3-trimethylcyclopropane
draw the cis and trans isomers of 2-pntane and label them. b. draw trans -4,4 dimethyl-2-pentane c. draw cis -2- hexane