1EDD

1EDD is a four-character alphanumeric identifier used in various scientific and data-management contexts. The most prominent usage is as a potential Protein Data Bank (PDB) entry code, where such identifiers label individual macromolecular structures in the public archive.

In the PDB context, a code like 1EDD would correspond to a specific structure entry that groups together atomic coordinates, experimental details, and metadata. A typical PDB entry includes the deposited coordinates of the molecule, the method used to determine the structure (for example, X-ray crystallography or cryo-electron microscopy), the resolution, information about the biological assembly, related authors, and a reference to any associated publication. Researchers use these codes to retrieve data, compare structures, and perform computational analyses in fields such as structural biology, biochemistry, and drug design.

Beyond the PDB, four-character codes are common in other databases and project inventories as compact identifiers. In these contexts, 1EDD may serve as an internal or public-labeled reference for a specific dataset, sample, or record. The exact meaning of the code depends on the database and the depositor’s naming conventions.

Overall, 1EDD exemplifies how concise alphanumeric codes function as stable, unique references that facilitate cross-database search, retrieval, and interoperability in scientific research. The assignment of such codes is managed by database curators to ensure that each identifier corresponds to a single, trackable entry.

See also: Protein Data Bank, PDB ID codes, structure determination databases.