PDB Data Distribution by Experimental Method and Molecular Type

Molecular TypeX-rayEMNMRIntegrativeMultiple methodsNeutronOtherTotal
Protein (only)178,97021,88712,7843432268432214,326
Protein/Oligosaccharide10,3703,580348111014,004
Protein/NA9,1076,3632872470015,788
Nucleic acid (only)3,1362211,568315314,947
Other17525334000237
Oligosaccharide (only)1106010422
Total 201,76932,07614,7123822608837249,324

Multiple Methods: Atomic structures substantially underpinned by more than one experimental method currently supported by the PDB archive (NMR, 3DEM, or crystallography/diffraction) with or without some additional data provided by currently unsupported methods.

Integrative Methods: Atomic structures with all data coming from currently unsupported methods by the PDB, or only partially underpinned by an experimental method currently supported by the PDB, or partially/entirely non-atomic structures supported by the PDB-IHM.

PDB Structures with Experimental Data

191,909 have a structure factor file
11,505 have an NMR restraint file
6,038 have a chemical shifts file
4,520 have NMR unified data files (NEF and/or NMR-STAR format files)
31,520 3DEM maps were used for the determination of 31,769 PDB structures

PDB Structures with Small Molecule Data

188,759 with any non-polymer small molecules
187,075 with non-polymer small molecules of 100-300 Da
66,173 with non-polymer small molecules of 300-500 Da
45,727 with non-polymer small molecules of 500-1200 Da
50,352 with author-designated Ligand/s of Interest
4,687 with a biologically interesting short oligomer or oligomer-like BIRD molecules
14,202 with with branched entities of oligosaccharides

Inner most layer represents the distribution by experimental methods, X-ray is shown in blue; EM in orange; NMR in green; Integrative in Red; Multiple methods in yellow; Neutron in pink; Other in grey. Outer most layer further shows the distribution by molecular type of each correspond experimental method.

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