5XKB image
Entry Detail
PDB ID:
5XKB
Title:
Crystal Structure of HasAp with Fe-5,15-bisethynyl-10,20-diphenylporphyrin
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2017-05-06
Release Date:
2017-12-06
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.18
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 61
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Heme acquisition protein HasAp
Chain IDs:A, B
Chain Length:184
Number of Molecules:2
Biological Source:Pseudomonas aeruginosa str. PAO1
Ligand Molecules
Primary Citation
Structures of the Heme Acquisition Protein HasA with Iron(III)-5,15-Diphenylporphyrin and Derivatives Thereof as an Artificial Prosthetic Group
Angew. Chem. Int. Ed. Engl. 56 15279 15283 (2017)
PMID: 28921809 DOI: 10.1002/anie.201707212

Abstact

Iron(III)-5,15-diphenylporphyrin and several derivatives were accommodated by HasA, a heme acquisition protein secreted by Pseudomonas aeruginosa, despite possessing bulky substituents at the meso position of the porphyrin. Crystal structure analysis revealed that the two phenyl groups at the meso positions of porphyrin extend outside HasA. It was shown that the growth of P. aeruginosa was inhibited in the presence of HasA coordinating the synthetic porphyrins under iron-limiting conditions, and that the structure of the synthetic porphyrins greatly affects the inhibition efficiency.

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