Hints on finding a Structure To search by keyword, like "aconitase" To search by protein sequence To search by nucleotide sequence

	New structure viewer			About the Database
Cn3D is NCBI's 3D structure viewer. As a helper application for your web browser, it allows you to interactively view 3-D structures, sequences, and sequence alignments. Cn3D is available for Windows, MacOS, and Unix.  More...			3D Domains are compact structural domains identified automatically in MMDB, Entrez's macromolecular three-dimensional structure database. 3D Domains are the units of comparison for structure neighbor calculations using the VAST algorithm. Links to VAST or 3D Domain neighbors display 3D Domains (and complete polypeptide chains) with similar 3D structures.