Question

Locate the Protein Databank (PDB) codes listed in column 1 and review the structure entry details, then complete the table

1A0I is an example that's complete

PDB code for the molecule.	Name of the molecules in the structure	Secondary structural elements present	Tertiary or quaternary structure of the molecule. Give a reason for your answer
1A0I	DNA ligase	Alpha helices and beta sheets almost in equal amounts	Secondary elements arranged in a tertiary structure. It’s a monomer, therefore no quaternary structure.
1KX3
5IYC

Answer 1

PDB code for the molecule	Name of the molecules in the structure	Secondary structural elements present	Tertiary or quaternary structure of the molecule.
1KX3	Nucleosome Core Particle	All alpha helices	Secondary elements arranged in tertiary structure,with 8 chains it shows quaternary structure.
5IYC	Human core-PIC in the initial transcribing state	Alpha helices and beta sheets in almost equal amounts	It is a polymer with 21 chains arranged in quaternary structure.