Structure and Properties of Peptides
Peptides in the fully extended chain conformation

also have a cis geometry in their peptide bonds
have Y = F = 180°
do not occur in nature
are equivalent to the (3-sheet structure

ANSWER DOWNLOAD EXAMIANS APP

Structure and Properties of Peptides
In deoxy hemoglobin (Hb), the Fe (II) is coordinated to

two nitrogens of heme and to three water molecules
two nitrogens of heme and to three His residues in Hb
four nitrogens of heme, the proximal His, and a water molecule
four nitrogens of heme and to a water molecule

ANSWER DOWNLOAD EXAMIANS APP

Structure and Properties of Peptides
Hemoglobin has quaternary structure and is made up of

four polypeptide chains, two α-chains and two β-chains
two polypeptide chains, one α-chains and one β-chains
six polypeptide chains, two α-chains and four β-chains
five polypeptide chains, two α-chains and three β-chains

ANSWER DOWNLOAD EXAMIANS APP