Internet offers a great number of information to overview the topic or explore the research. Be critical approaching websites and thoroughly evaluate what you read, as not everything published is a reliable and true. Apply TRAAP criteria to evaluate timeline, relevance, authority, accuracy and purpose of information found online.
Below are open access subject databases selected on crystallographic topics. They are databases of structures, online encyclopedias, data repositories and others.
Developed by Cambridge Crystallographic Data Centre (CCDC), is the world's repository of experimentally determined organic and metal-organic crystal structures. Contained related applications software including GOLD and Relibase+ for database access, structure visualization and data analysis, and structural knowledge bases derived from the CSD.
Repository of structural information on biological macromolecules, including proteins and nucleic acids, +140,000 records. Structures can be visualized, downloaded, and deposited. See also: Nucleic Acid Database
Open access collection of crystal structures from organics, organometallics, inorganics, and minerals - +390,000 entries. Structures can be viewed in JSmol and downloaded (.cif).
Database of structures published in American Mineralogist, The Canadian Mineralogist, and Physics and Chemistry of Minerals.
NCBI's structure database. From the MMDB summary record, you can view and download the structure (PDB, PNG etc.) or open the structure in the full iCn3D viewer for additional viewing options and creating 3D-printable files.
Collaborative encyclopedia of proteins, DNA, RNA, and other macromolecules. Includes animated structures in JSmol that can be exported.
Crystal Structures of Inorganic, Metal-Organic or Organic Compounds