1I40		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, CL, NA	enzyme
related structures	by homologous chain: 1I6T
Gene Ontology	Chain Function Process Component A
Primary reference	The structures of Escherichia coli inorganic pyrophosphatase complexed with Ca(2+) or CaPP(i) at atomic resolution and their mechanistic implications., Samygina VR, Popov AN, Rodina EV, Vorobyeva NN, Lamzin VS, Polyakov KM, Kurilova SA, Nazarova TI, Avaeva SM, J Mol Biol 2001 Nov 30;314(3):633-45. PMID:11846572

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (77 Kb) [Save to disk] Biological Unit Coordinates (1i40.pdb1.gz) 421 Kb LPC: Ligand-Protein Contacts for 1I40 CSU: Contacts of Structural Units for 1I40 Likely Quarternary Molecular Structure file(s) for 1I40 Structure Factors (675 Kb) Retrieve 1I40 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1I40 from S2C, [Save to disk] Re-refined 1i40 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1I40 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: [1i40] [1i40_A] SWISS-PROT database: [P0A7A9]

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