1E2A

1E2A is a four-character alphanumeric code that identifies a specific macromolecular structure in the Protein Data Bank (PDB). PDB IDs like 1E2A are assigned to entries that compile experimental coordinates of biological macromolecules, typically determined by X-ray crystallography, nuclear magnetic resonance spectroscopy, or cryo-electron microscopy. The entry designated 1E2A would include the atomic coordinates of the structure, information about the biological assembly, details of the experimental method, resolution or data quality, R-factors, deposition date, contributors, and cross-references to related literature and databases.

Access to 1E2A is via the PDB website (for example, the RCSB PDB). Users can search for “1E2A” to retrieve the entry page, which provides downloadable coordinate files in PDB or mmCIF formats, visualizations, sequence and chain information, and annotations. The page often includes metadata such as the depositing laboratory, authors, experimental conditions, and links to related entries or publications.

If 1E2A is encountered in contexts outside structural biology, the code may have different meanings depending on the domain, such as a product model number or catalog identifier. Without context, the designation remains ambiguous. In the scientific domain, however, 1E2A most commonly refers to a PDB entry used to reference a particular deposited macromolecular structure. For detailed information, consult the PDB entry page or related structural biology resources.