Figure 4.

The Protein Data Bank (PDB) entry for a macromolecular structure of a scavenger receptor. Because crystal structures of proteins are more difficult to obtain than their protein sequences, the PDB database is less populated than sequence databases such as NCBI’s Entrez. However, PDB is still an excellent resource. Here, an example of the detailed entry for PDB ID 2OY3 is displayed after a search for “MARCO” was performed. Information is displayed such as the primary citation from which this structure was submitted, and a small visualization of the structure. Further, more detailed visualizations can be created easily by the user by downloading the .pdb formatted file from the top right of an entry, and displaying it in software such as UCSF Chimera.