ArticleBiochemistry2014
Solution structure and molecular determinants of hemoglobin binding of the first NEAT domain of IsdB in Staphylococcus aureus.
Article in Biochemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed.
- Cryo-EM provides insight into how thebioRxiv : the preprint server for biology · 2026Article
- Time-resolved X-ray solution scattering unveils the events leading to hemoglobin heme capture by staphylococcal IsdB.Nature communications · 2025Article
- Identification of small molecules affecting the interaction between human hemoglobin and Staphylococcus aureus IsdB hemophore.Scientific reports · 2024Article
- Structure and role of the linker domain of the iron surface-determinant protein IsdH in heme transportation in Staphylococcus aureus.The Journal of biological chemistry · 2022Article
- Cryo-EM structures of staphylococcal IsdB bound to human hemoglobin reveal the process of heme extraction.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- The Staphylococcus aureus IsdH Receptor Forms a Dynamic Complex with Human Hemoglobin that Triggers Heme Release via Two Distinct Hot Spots.Journal of molecular biology · 2020Article
- NEAr Transporter (NEAT) Domains: Unique Surface Displayed Heme Chaperones That Enable Gram-Positive Bacteria to Capture Heme-Iron From Hemoglobin.Frontiers in microbiology · 2020Review
- Interaction of human hemoglobin and semi-hemoglobins with the Staphylococcus aureus hemophore IsdB: a kinetic and mechanistic insight.Scientific reports · 2019Article
- HumanmBio · 2019Article
- NMR experiments redefine the hemoglobin binding properties of bacterial NEAr-iron Transporter domains.Protein science : a publication of the Protein Society · 2019Article
- TheThe Journal of biological chemistry · 2018Article
- Energetics underlying hemin extraction from human hemoglobin byThe Journal of biological chemistry · 2018Article
- Corynebacterium diphtheriae Iron-Regulated Surface Protein HbpA Is Involved in the Utilization of the Hemoglobin-Haptoglobin Complex as an Iron Source.Journal of bacteriology · 2018Article
- Structure-function analyses reveal key features inThe Journal of biological chemistry · 2018Article
- The Diversity of Mammalian Hemoproteins and Microbial Heme Scavengers Is Shaped by an Arms Race for Iron Piracy.Frontiers in immunology · 2018Article
- Germline-encoded neutralization of a Staphylococcus aureus virulence factor by the human antibody repertoire.Nature communications · 2016Article
- The Staphylococcus aureus Protein IsdH Inhibits Host Hemoglobin Scavenging to Promote Heme Acquisition by the Pathogen.The Journal of biological chemistry · 2016Article
- Heme Synthesis and Acquisition in Bacterial Pathogens.Journal of molecular biology · 2016Review
- The PRE-Derived NMR Model of the 38.8-kDa Tri-Domain IsdH Protein from Staphylococcus aureus Suggests That It Adaptively Recognizes Human Hemoglobin.Journal of molecular biology · 2016Article
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9 authors.
Funding
Abstract
The human pathogen Staphylococcus aureus acquires heme iron from hemoglobin (Hb) via the action of a series of iron-regulated surface determinant (Isd) proteins. The cell wall anchored IsdB protein is recognized as the predominant Hb receptor, and is comprised of two NEAr transporter (NEAT) domains that act in concert to bind, extract, and transfer heme from Hb to downstream Isd proteins. Structural details of the NEAT 2 domain of IsdB have been investigated, but the molecular coordination between NEAT 2 and NEAT 1 to extract heme from hemoglobin has yet to be characterized. To obtain a more complete understanding of IsdB structure and function, we have solved the 3D solution structure of the NEAT 1 domain of IsdB (IsdB(N1)) spanning residues 125-272 of the full-length protein by NMR. The structure reveals a canonical NEAT domain fold and has particular structural similarity to the NEAT 1 and NEAT 2 domains of IsdH, which also interact with Hb. IsdB(N1) is also comprised of a short N-terminal helix, which has not been previously observed in other NEAT domain structures. Interestingly, the Hb binding region (loop 2 of IsdB(N1)) is disordered in solution. Analysis of Hb binding demonstrates that IsdB(N1) can bind metHb weakly and the affinity of this interaction is further increased by the presence of IsdB linker domain. IsdB(N1) loop 2 variants reveal that phenylalanine 164 (F164) of IsdB is necessary for Hb binding and rapid heme transfer from metHb to IsdB. Together, these findings provide a structural role for IsdB(N1) in enhancing the rate of extraction of metHb heme by the IsdB NEAT 2 domain.
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