Structure and Properties of Peptides The heme is held in place by a bond between the Fe2+ and histidine the Fe2+ and cysteine the Fe3+ and histidine the Fe3+ and cysteine the Fe2+ and histidine the Fe2+ and cysteine the Fe3+ and histidine the Fe3+ and cysteine ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides In the β-pleated sheet All of these adjacent polypeptide chains can either be parallel or antiparallel hydrogen bonds are formed between the peptide bonds the polypeptide chain is fully extended All of these adjacent polypeptide chains can either be parallel or antiparallel hydrogen bonds are formed between the peptide bonds the polypeptide chain is fully extended ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Hydrogen bonds in a-helices are not present at Phe residues analogous to the steps in a spiral staircase roughly parallel to the helix axis more numerous than Vander Waals interactions not present at Phe residues analogous to the steps in a spiral staircase roughly parallel to the helix axis more numerous than Vander Waals interactions ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides The oxygen in hemoglobin and myoglobin is bound to the nitrogen atoms on the heme histidine residues in the protein lysine residues in the protein the iron atom in the heme group the nitrogen atoms on the heme histidine residues in the protein lysine residues in the protein the iron atom in the heme group ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides The major element of secondary structure in myoglobin and hemoglobin is the a-helix the P-strand All of these the reverse turn the a-helix the P-strand All of these the reverse turn ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Peptides in the fully extended chain conformation have Y = F = 180° do not occur in nature also have a cis geometry in their peptide bonds are equivalent to the (3-sheet structure have Y = F = 180° do not occur in nature also have a cis geometry in their peptide bonds are equivalent to the (3-sheet structure ANSWER DOWNLOAD EXAMIANS APP
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