1EF1

1EF1 is a Protein Data Bank (PDB) identifier for a deposited macromolecular structure. PDB entries are four-character alphanumeric codes used to catalog experimentally determined three-dimensional structures of biological macromolecules and related complexes.

The 1EF1 entry includes coordinates for the atoms in the biomolecule, along with metadata such as the experimental method used to determine the structure (for example X-ray crystallography, nuclear magnetic resonance spectroscopy, or cryo-electron microscopy), the resolution or data quality, and publication references. It also lists the molecule's components, chain identifiers, residue numbering, and any bound ligands, cofactors, or solvent molecules.

Biological context: The structure may represent a protein, a nucleic acid, a protein–ligand complex, or another biomolecular assembly. The entry's associated literature and database cross-references provide information about the function and significance of the biomolecule.

Applications: 1EF1 participates in structural biology and computational studies, serving as a reference for structural comparison, function inference, and in silico docking or molecular dynamics experiments.

Access: 1EF1 is available through the Protein Data Bank. Users can view the structure, download coordinate files in PDB or mmCIF formats, and explore features such as chain topology, secondary structure, B-factors, and electron density maps when provided.