1x71 Summary

pdbe.org/1x71
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Crystal structure of Siderocalin (NGAL, Lipocalin 2) complexed with TRENCAM-3,2-HOPO, a cepabactin analogue

The structure was published by Holmes, M.A., Paulsene, W., Jide, X., Ratledge, C., and Strong, R.K., in 2005 in a paper entitled "Siderocalin (Lcn 2) Also Binds Carboxymycobactins, Potentially Defending against Mycobacterial Infections through Iron Sequestration" (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.1 Å and deposited in 2004.

The experimental data on which the structure is based was not deposited.

This PDB entry contains multiple copies of the structure of Neutrophil gelatinase-associated lipocalin.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule has more than one probable quaternary state observed. For more details see the quaternary structure page.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A Neutrophil gelatinase-associated lipocalin P80188 (21-198) (NGAL_HUMAN)search Homo sapienssearch 98% 178 98%
B Neutrophil gelatinase-associated lipocalin P80188 (21-198) (NGAL_HUMAN)search Homo sapienssearch 98% 178 98%
C Neutrophil gelatinase-associated lipocalin P80188 (21-198) (NGAL_HUMAN)search Homo sapienssearch 98% 178 98%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
P80188 (21 - 198) Neutrophil gelatinase-associated lipocalin Homo sapiens

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A, B, C (P80188) Retinol binding protein-likesearch Lipocalinsearch PF00061: Lipocalin / cytosolic fatty-acid binding protein familysearch

Chain ID Biological process (GO) Cellular component (GO) Molecular function (GO)
A, B, C (P80188) ion transportsearch transportsearch apoptotic processsearch innate immune responsesearch iron ion homeostasissearch siderophore transportsearch immune system processsearch extracellular regionsearch extracellular spacesearch extracellular vesicular exosomesearch transporter activitysearch small molecule bindingsearch iron ion bindingsearch

Chain InterPro annotation
A, B, C Lipocalin/cytosolic fatty-acid binding domainsearch Lipocalinsearch Neutrophil gelatinase-associated lipocalinsearch Calycin-likesearch Calycinsearch Lipocalin family conserved sitesearch