- EMDB-24233: The cryoEM structure of LbpB from N. gonorrhoeae in complex with ... -
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データベース: EMDB / ID: EMD-24233
タイトル
The cryoEM structure of LbpB from N. gonorrhoeae in complex with lactoferrin
マップデータ
試料
複合体: complex between lactoferrin binding protein and lactoferrin
複合体: lactoferrin binding protein
タンパク質・ペプチド: Lactoferrin-binding protein B
複合体: lactoferrin
タンパク質・ペプチド: Lactotransferrin
リガンド: FE (III) ION
リガンド: BICARBONATE ION
キーワード
lactoferrin / lipoprotein / neisseria / iron import / MEMBRANE PROTEIN / MEMBRANE PROTEIN-TRANSPORT PROTEIN complex
機能・相同性
機能・相同性情報
host-mediated suppression of viral proces / membrane destabilizing activity / Mtb iron assimilation by chelation / phagocytic vesicle lumen / positive regulation of toll-like receptor 4 signaling pathway / Metal sequestration by antimicrobial proteins / negative regulation of viral process / negative regulation of tumor necrosis factor (ligand) superfamily member 11 production / negative regulation of single-species biofilm formation in or on host organism / positive regulation of bone mineralization involved in bone maturation ...host-mediated suppression of viral proces / membrane destabilizing activity / Mtb iron assimilation by chelation / phagocytic vesicle lumen / positive regulation of toll-like receptor 4 signaling pathway / Metal sequestration by antimicrobial proteins / negative regulation of viral process / negative regulation of tumor necrosis factor (ligand) superfamily member 11 production / negative regulation of single-species biofilm formation in or on host organism / positive regulation of bone mineralization involved in bone maturation / negative regulation of osteoclast development / antifungal humoral response / specific granule / negative regulation of lipopolysaccharide-mediated signaling pathway / positive regulation of chondrocyte proliferation / negative regulation of ATP-dependent activity / regulation of tumor necrosis factor production / bone morphogenesis / Antimicrobial peptides / negative regulation of viral genome replication / positive regulation of osteoblast proliferation / humoral immune response / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; セリンエンドペプチターゼ / cysteine-type endopeptidase inhibitor activity / positive regulation of protein serine/threonine kinase activity / positive regulation of osteoblast differentiation / regulation of cytokine production / ossification / innate immune response in mucosa / protein serine/threonine kinase activator activity / secretory granule / cell outer membrane / lipopolysaccharide binding / recycling endosome / specific granule lumen / antimicrobial humoral immune response mediated by antimicrobial peptide / positive regulation of NF-kappaB transcription factor activity / antibacterial humoral response / tertiary granule lumen / heparin binding / iron ion transport / defense response to Gram-negative bacterium / killing of cells of another organism / positive regulation of canonical NF-kappaB signal transduction / early endosome / iron ion binding / Amyloid fiber formation / serine-type endopeptidase activity / Neutrophil degranulation / negative regulation of apoptotic process / cell surface / protein-containing complex / proteolysis / DNA binding / extracellular space / extracellular exosome / extracellular region / nucleus / plasma membrane / cytoplasm 類似検索 - 分子機能
Transferrin-binding protein B, N-lobe handle / N-Lobe handle Tf-binding protein B / Transferrin-binding protein B, C-lobe handle domain / TbpB, C-lobe handle domain superfamily / C-lobe handle domain of Tf-binding protein B / TbpB, N-lobe handle domain superfamily / Transferrin-binding protein B, C-lobe/N-lobe beta barrel domain / C-lobe and N-lobe beta barrels of Tf-binding protein B / Lactotransferrin / Transferrin-like domain signature 2. ...Transferrin-binding protein B, N-lobe handle / N-Lobe handle Tf-binding protein B / Transferrin-binding protein B, C-lobe handle domain / TbpB, C-lobe handle domain superfamily / C-lobe handle domain of Tf-binding protein B / TbpB, N-lobe handle domain superfamily / Transferrin-binding protein B, C-lobe/N-lobe beta barrel domain / C-lobe and N-lobe beta barrels of Tf-binding protein B / Lactotransferrin / Transferrin-like domain signature 2. / Transferrin family, iron binding site / Transferrin-like domain signature 1. / Transferrin-like domain signature 3. / Transferrin / Transferrin-like domain / Transferrin / Transferrin-like domain profile. / Transferrin / Outer membrane protein/outer membrane enzyme PagP, beta-barrel / Prokaryotic membrane lipoprotein lipid attachment site profile. 類似検索 - ドメイン・相同性
Lactotransferrin / Transferrin-binding protein B 類似検索 - 構成要素
ジャーナル: Elife / 年: 2021 タイトル: Structural insight into the dual function of LbpB in mediating Neisserial pathogenesis. 著者: Ravi Yadav / Srinivas Govindan / Courtney Daczkowski / Andrew Mesecar / Srinivas Chakravarthy / Nicholas Noinaj / 要旨: Lactoferrin-binding protein B (LbpB) is a lipoprotein present on the surface of that has been postulated to serve dual functions during pathogenesis in both iron acquisition from lactoferrin (Lf), ...Lactoferrin-binding protein B (LbpB) is a lipoprotein present on the surface of that has been postulated to serve dual functions during pathogenesis in both iron acquisition from lactoferrin (Lf), and in providing protection against the cationic antimicrobial peptide lactoferricin (Lfcn). While previous studies support a dual role for LbpB, exactly how these ligands interact with LbpB has remained unknown. Here, we present the structures of LbpB from and in complex with human holo-Lf, forming a 1:1 complex and confirmed by size-exclusion chromatography small-angle X-ray scattering. LbpB consists of N- and C-lobes with the N-lobe interacting extensively with the C-lobe of Lf. Our structures provide insight into LbpB's preference towards holo-Lf, and our mutagenesis and binding studies show that Lf and Lfcn bind independently. Our studies provide the molecular details for how LbpB serves to capture and preserve Lf in an iron-bound state for delivery to the membrane transporter LbpA for iron piracy, and as an antimicrobial peptide sink to evade host immune defenses.