4Y4S		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, SO4	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	The crystal structure of heme acquisition system A from Yersinia pseudotuberculosis (HasA): Roles of the axial ligand Tyr75 and two distal arginines in heme binding., Kanadani M, Sato T, Hino T, Nagano S, Ozaki SI, J Inorg Biochem. 2015 Jul 18. pii: S0162-0134(15)30034-9. doi:, 10.1016/j.jinorgbio.2015.07.007. PMID:26210321

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (32 Kb) [Save to disk] Biological Unit Coordinates (4y4s.pdb1.gz) 52 Kb LPC: Ligand-Protein Contacts for 4Y4S CSU: Contacts of Structural Units for 4Y4S Structure Factors (375 Kb) Retrieve 4Y4S in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 4Y4S from S2C, [Save to disk] Re-refined 4y4s structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 4Y4S 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: [4y4s] [4y4s_A] SWISS-PROT database:

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