4HKA		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	HEM	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of Drosophila melanogaster tryptophan 2,3-dioxygenase reveals insights into substrate recognition and catalytic mechanism., Huang W, Gong Z, Li J, Ding J, J Struct Biol. 2013 Mar;181(3):291-9. doi: 10.1016/j.jsb.2013.01.002. Epub 2013, Jan 17. PMID:23333332

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (64 Kb) [Save to disk] Biological Unit Coordinates (4hka.pdb1.gz) 231 Kb LPC: Ligand-Protein Contacts for 4HKA CSU: Contacts of Structural Units for 4HKA Structure Factors (455 Kb) Retrieve 4HKA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 4HKA from S2C, [Save to disk] Re-refined 4hka structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 4HKA 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: [4hka] [4hka_A] SWISS-PROT database:

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