Acyl carrier protein from Escherichia coli: characterization by proton and fluorine-19 nuclear magnetic resonance and evidence for restricted mobility of the fatty acid chain in tetradecanoyl-acyl-carrier protein
| Autor: | James H. Prestegard, John E. Cronan, Ian M. Armitage, Allen K. Spencer, Hans Ulrich Gally |
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| Rok vydání: | 1978 |
| Předmět: |
animal structures
Magnetic Resonance Spectroscopy Protein Conformation Biochemistry Cofactor Residue (chemistry) Protein structure Nuclear magnetic resonance stomatognathic system Acyl Carrier Protein Escherichia coli Moiety chemistry.chemical_classification biology Chemistry Fatty Acids Temperature Fatty acid Nuclear magnetic resonance spectroscopy Hydrogen-Ion Concentration humanities Acyl carrier protein biology.protein Proton NMR bacteria Tyrosine lipids (amino acids peptides and proteins) |
| Zdroj: | Biochemistry. 17(25) |
| ISSN: | 0006-2960 |
| Popis: | The acyl-carrier protein (ACP) of Escherichia coli is a protein of molecular weight 8847 with a 4'-phosphopanthetheine prosthetic group. ACP functions (via the SH of the prosthetic group) as a coenzyme in the synthesis of fatty acids and complex lipids. We report proton nuclear magnetic resonance (NMR) studies of the structure of ACP under various experimental conditions. The motion of the fatty acyl chain of acyl-ACP has been investigated by 19FNMR studies of difluorotetradecanoyl-ACP. 31PNMR studies of the prosthetic group phosphorus of ACP and acyl-ACP are also reported. We make the following conclusions: (1) the structure of ACP is stabilized by surface charge, and (2) the fatty acid residue of acyl-ACP does not move freely and seems immobilized by an interaction with the protein moiety. |
| Databáze: | OpenAIRE |
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