#Question id: 27666
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 27667
#Unit 1. Molecules and their Interaction Relevant to Biology
There are few statements is given regarding the peptide bond are given
(a) For most peptide bonds the ratio of cis to trans configurations is approximately 1:1000
(b) Peptide bonds formed between Xaa and proline (Xaa is any amino acid) the cis to trans ratio is 1:4
(c) Co and N atoms of the peptide grouping are both in planar sp2 hybridization
(d) All three kinds of bonds (N-Ca, Ca-Co, and the Co-N peptide bond) are single bonds
(e) The peptide bond is estimated to have 40% double bond character
Choose which of the following is correct
#Question id: 27668
#Unit 1. Molecules and their Interaction Relevant to Biology
In a peptide bond the true electron density is intermediate. The barrier to C-N bond rotation/to keep the amide group planar requires of about
#Question id: 27669
#Unit 1. Molecules and their Interaction Relevant to Biology
When Psi is fixed at +165º then allowed region -70º to -170º then this allowed region belong to
(a) Left-handed helix
(b) Right-handed helix
(c) Parallel beta sheet
(d) Antiparallel beta sheet
Choose which of the following is correct
#Question id: 27670
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 27671
#Unit 1. Molecules and their Interaction Relevant to Biology
The range for Pro residues cyclic side chain has