3qgp

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Crystal structure of IsdI in complex with heme and cyanideCrystal structure of IsdI in complex with heme and cyanide

Structural highlights

3qgp is a 2 chain structure with sequence from Staphylococcus aureus subsp. aureus N315. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.8Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HDOX2_STAAN Allows bacterial pathogens to use the host heme as an iron source. Catalyzes the oxidative degradation of the heme macrocyclic porphyrin ring to the oxo-bilirubin chromophore staphylobilin (a mixture of the linear tetrapyrroles 5-oxo-delta-bilirubin and 15-oxo-beta-bilirubin) in the presence of a suitable electron donor such as ascorbate or NADPH--cytochrome P450 reductase, with subsequent release of free iron.[HAMAP-Rule:MF_01272][1] [2]

See Also

References

  1. Lee WC, Reniere ML, Skaar EP, Murphy ME. Ruffling of metalloporphyrins bound to IsdG and IsdI, two heme-degrading enzymes in Staphylococcus aureus. J Biol Chem. 2008 Nov 7;283(45):30957-63. Epub 2008 Aug 19. PMID:18713745 doi:10.1074/jbc.M709486200
  2. Reniere ML, Ukpabi GN, Harry SR, Stec DF, Krull R, Wright DW, Bachmann BO, Murphy ME, Skaar EP. The IsdG-family of haem oxygenases degrades haem to a novel chromophore. Mol Microbiol. 2010 Mar;75(6):1529-38. Epub 2010 Feb 17. PMID:20180905 doi:10.1111/j.1365-2958.2010.07076.x

3qgp, resolution 1.80Å

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