Protein Without Prosthetic Group: Apoprotein Explained
A protein molecule that has had its non-protein component, known as the prosthetic group, removed is termed an apoprotein.
The holoprotein represents the complete, functional molecule, which includes both the apoprotein and its prosthetic group.
Why other options are incorrect:
- Hemoprotein: Refers specifically to proteins containing a heme group (like hemoglobin).
- Lipoprotein: A complex of proteins and lipids (fats).
Therefore, the correct term for a protein lacking its prosthetic group is apoprotein.
Important Questions from Structure and Function of Biomolecules
- An element that is present in a nucleotide but not in a nucleoside is __________.
- Which one of the following coenzymes is utilised by alanine racemase for the conversion of L-Alanine to D-Alanine?
- Which of the following show(s) optical activity at 100 mM concentration in water?
An octapeptide composed of these L-amino acids – Lys, Thr, Ser, Met, Arg, Trp, Tyr, Glu was subjected to analyses with the following outcomes:
P. The N-terminal sequencing analysis by Sanger's method yielded 'Ser' at the N-terminus
Q. Chymotrypsin treatment gave a pentapeptide, a ‘Tyr' containing dipeptide and a free ‘Glu'
R. Cyanogen bromide treatment gave two tetrapeptides
S. Trypsin treatment gave two tripeptides and a dipeptide
Which one of the following is the correct octapeptide sequence?
- Which of the following amino acids contain(s) two chiral carbons?
