Use PDBsum to view the domains in RasMol for the following proteins. View the domains in RasMol . An example of a 3-domain protein is 1aoz . The smallest protein divided into two domains is 1pcp , with 106 residues and the largest is 1abb with 824 residues. Most domains are around 100 residues in size.
Domains can consist of non-sequential parts of the polypeptide chain.
For example, the two domains in 1fmo involve separate segments of the protein chain. Structurally similar proteins in CATH Return to the PDBsum page for 1cbq and click on the CATH link. All the proteins in the frame have the CATH number 2.40.130.10 . They are grouped into different S levels. There are 11 S levels, or sequence families, within this group.