4NPK		date
authors
compound		source
symmetry		R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma
method	X-Ray Diffraction	resolution
ligand	CA	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	Structure and Ca-Binding Properties of the Tandem C Domains of E-Syt2., Xu J, Bacaj T, Zhou A, Tomchick DR, Sudhof TC, Rizo J, Structure. 2013 Dec 24. pii: S0969-2126(13)00461-9. doi:, 10.1016/j.str.2013.11.011. PMID:24373768

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (141 Kb) [Save to disk] Biological Unit Coordinates (4npk.pdb1.gz) 135 Kb LPC: Ligand-Protein Contacts for 4NPK CSU: Contacts of Structural Units for 4NPK Structure Factors (334 Kb) Retrieve 4NPK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 4NPK from S2C, [Save to disk] Re-refined 4npk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 4NPK in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [4npk] [4npk_A] SWISS-PROT database: Domain found in 4NPK: [C2 ] by SMART

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