In Glycolate pathway, Glycine exits the peroxisomes and enters the mitochondria where a multienzyme complex catalyzes the conversion of two molecules of glycine and one molecule of NAD+ into one molecule each of serine, NADH, NH4 +, and CO2; the enzyme complex used in this reaction is

#Question id: 27645

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct regarding the β turns

(1) In Type I β turn i+1 lies in RHH region while i+2 lies near BS region 

(2) In Type II β turn i+1 lies in BS while i+2 lies in below LHH

(3) In Type I’ β i+1and i+2 in near LHH which virtually not allowed region for most of amino acid except Gly 

(4) In Type II’ β i+2 lies at 00 psi and i+1 in lower right region both i+2 and   i+1  must be Gly

#Question id: 27664

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correctly representing the distance between two successive C α Carbon in a peptide chain

#Question id: 27665

#Unit 1. Molecules and their Interaction Relevant to Biology

There are few statements is given regarding the peptide bond configuration in a chain

(a) The peptide bond is normally (99.6% of the time) in the trans configuration, constraining  to a value of w=+_180

(b) The peptide bond is normally (99.6% of the time) in the Cis configuration, constraining  to a value of w=+_180

(c) In the trans configuration of peptide bond C and C=O lies in the Same plane while in different plane in case of cis configuration 

(d) In the trans configuration of peptide bond C and C=O lies in the different plane while in same plane in case of cis configuration 

Choose which of the following is correct

#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