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'''Neutrophil Gelatinase-associated Lipocalin is a Novel Bacteriostatic Agent that Interferes with Siderophore-mediated Iron Acquisition''' | '''Neutrophil Gelatinase-associated Lipocalin is a Novel Bacteriostatic Agent that Interferes with Siderophore-mediated Iron Acquisition''' | ||
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[[Category: Raymond, K N.]] | [[Category: Raymond, K N.]] | ||
[[Category: Strong, R K.]] | [[Category: Strong, R K.]] | ||
[[Category: | [[Category: Lipocalin]] | ||
[[Category: | [[Category: Siderophore]] | ||
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Revision as of 23:35, 2 May 2008
Neutrophil Gelatinase-associated Lipocalin is a Novel Bacteriostatic Agent that Interferes with Siderophore-mediated Iron Acquisition
OverviewOverview
First identified as a neutrophil granule component, neutrophil gelatinase-associated lipocalin (NGAL; also called human neutrophil lipocalin, 24p3, uterocalin, or neu-related lipocalin) is a member of the lipocalin family of binding proteins. Putative NGAL ligands, including neutrophil chemotactic agents such as N-formylated tripeptides, have all been refuted by recent biochemical and structural results. NGAL has subsequently been implicated in diverse cellular processes, but without a characterized ligand, the molecular basis of these functions remained mysterious. Here we report that NGAL tightly binds bacterial catecholate-type ferric siderophores through a cyclically permuted, hybrid electrostatic/cation-pi interaction and is a potent bacteriostatic agent in iron-limiting conditions. We therefore propose that NGAL participates in the antibacterial iron depletion strategy of the innate immune system.
About this StructureAbout this Structure
1L6M is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
ReferenceReference
The neutrophil lipocalin NGAL is a bacteriostatic agent that interferes with siderophore-mediated iron acquisition., Goetz DH, Holmes MA, Borregaard N, Bluhm ME, Raymond KN, Strong RK, Mol Cell. 2002 Nov;10(5):1033-43. PMID:12453412 Page seeded by OCA on Fri May 2 23:35:50 2008