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You may include any references to papers as in: the use of JSmol in Proteopedia ^[1] or to the article describing Jmol ^[2] to the rescue.

Function of your Protein

it binds to a host cell (human epithelial cell) to provide a host cell recognition to invade the human cell. In this case, these epithelial adhesions are adhering Candida glabrata to a human epithelial cell.

Biological relevance and broader implications

Candida glabrata is a fungus that is able to infect a human host through the bloodstream. Unfortunately, this is a life-threatening infection for humans. By trying to understand the structure of the epithelial adhesion on the outer surface of the fungus. There could be a possibility of stoping the adhesion from attaching to the host cell and stop host cell recognition altogether. This could help in lowering the high amount of cases that are life-threatening as there are upwards of 29% of cases of Candida glabrata infections.

Important amino acids

The type of protein that we are looking at is an adhesion protein, so it does not function as an enzyme. It does not have a catalytic triad within the active site. Though there are some important amino acid residues to highlight as they interact with the ligand (lactose). In the diagram of the protein, we can look to see the red ball stick structures by the ligand are the amino acid residues interacting with the ligand. They are all interacting via hydrogen bonds.

Structural highlights

Some things to note are that the main structure of the protein consists of 27% beta sheets and only 7% alpha helices. It can also be noted that two beta sheets contain at least one key residue that interacts with the ligand. These parts of the beta sheets are able to help form a pocket to bind the ligand best suited for the structure. In this case it is lactose. The rest of the protein has some loop structures that help shape this pocket for binding the ligand as well. There are some calcium binding loops also involved in the binding pocket. These loops form the inner part of this pocket and are highly conservative. They are conservative as to keep a high-binding affinity. The outer pocket is made of three other loops these are more variable, but still contain some key residues that keep high binding affinity. There are also some more conservative structures within the beta sheets that don't allow for change as they are key portions for keeping a good binding affinity for the ligand.

Other important features

This is a sample scene created with SAT to by Group, and another to make of the protein. You can make your own scenes on SAT starting from scratch or loading and editing one of these sample scenes.