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Nemoto N, Kawaguchi M, Yura K, Shimada H, Bessho Y. PGLN: A newly identified amino phosphoglycolipid species in Thermus thermophilus HB8. Biochem Biophys Rep 2022; 32:101377. [PMID: 36345289 PMCID: PMC9636437 DOI: 10.1016/j.bbrep.2022.101377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/26/2022] [Indexed: 11/07/2022] Open
Abstract
Thermus thermophilus has several minor lipid molecules with structures that have not been described yet. In this study, we identified a new lipid molecule in T. thermophilus HB8 with an amino group at the polar head, by detecting lipid spots with HPTLC and mass spectrometry. The structure of the lipid resembles an amino sugar phospholipid, except for the glucosamine that lacks an acetyl group. We named this amino phosphoglycolipid PGLN, and proposed its synthetic pathway from a precursor, phosphatidyl-glyceric alkylamine. The primary amine structure of PGLN may contribute to high temperature adaptation through electrostatic interactions between the head groups. No amino phospholipid has been identified in T. thermophilus HB8 so far. PGLN is discovered by detecting lipid spots with HPTLC and mass spectrometry. PGLN is a newly identified amino phosphoglycolipid without an acetyl group. PGLN may play an important role in high temperature adaptation.
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Affiliation(s)
- Naoki Nemoto
- Faculty of Advanced Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba, 275-0016, Japan,Corresponding author.
| | - Masahiko Kawaguchi
- Faculty of Advanced Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba, 275-0016, Japan
| | - Kei Yura
- Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo, 112-8610, Japan,Center for Interdisciplinary AI and Data Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo, 112-8610, Japan,Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan
| | - Haruo Shimada
- BioChromato, Inc, 1-12-19 Honcho, Fujisawa, Kanagawa, 251-0053, Japan,School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yoshitaka Bessho
- Center for Interdisciplinary AI and Data Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo, 112-8610, Japan,Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo, 113-8657, Japan,RIKEN SPring-8 Center, Harima Institute, 1-1-1 Kouto, Sayo, Hyogo, 679-5148, Japan,Corresponding author. Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo, 113-8657, Japan.
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Cox AD, Wilkinson SG. Ionizing groups in lipopolysaccharides of Pseudomonas cepacia in relation to antibiotic resistance. Mol Microbiol 1991; 5:641-6. [PMID: 2046549 DOI: 10.1111/j.1365-2958.1991.tb00735.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Contrary to previous reports, lipopolysaccharides from Pseudomonas cepacia contain a 3-deoxyoct-2-ulosonic acid (probably a single residue). The lipopolysaccharides contain only two phosphate residues, one of which apparently forms a phosphodiester bridge between 4-amino-4-deoxyarabinose and a glucosamine residue in lipid A. The second, unlocated phosphate residue occurs mainly as a monoester in some lipopolysaccharides, and mainly as a diester in others. All lipopolysaccharides lack pyrophosphate residues. The results support the view that the resistance of P. cepacia to cationic antibiotics stems from ineffective binding to the outer membrane, as a consequence of the low number of phosphate and carboxylate groups in the lipopolysaccharide, and the presence of the protonated aminodeoxypentose.
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Affiliation(s)
- A D Cox
- School of Chemistry, University of Hull, UK
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