Mobility of secondary structure units of horse-muscle acylphosphatase. Relation to antigenicity. 1989

V Saudek, and R J Williams, and M Stefani, and G Ramponi
Inorganic Chemistry Laboratory, University of Oxford, UK.

The antigenic properties of acylphosphatase are compared with its various sequential characteristics (hydrophobicity, chemical shift of the main-chain 1H-NMR resonances, numbers and intensities of the nuclear Overhauser enhancements, hydrogen-deuterium exchange and sequential arrangement of the secondary structure units). The discussion is based on the complete sequential assignment of the 1H-NMR spectrum and the knowledge of the three-dimensional fold of the protein obtained by NMR spectroscopy from distance geometry calculations. Regions with very different degrees of mobility can be distinguished. It is found that all major antigenic sites are located in the most mobile surface loops.

UI MeSH Term Description Entries
D009132 Muscles Contractile tissue that produces movement in animals. Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D009682 Magnetic Resonance Spectroscopy Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING). In Vivo NMR Spectroscopy,MR Spectroscopy,Magnetic Resonance,NMR Spectroscopy,NMR Spectroscopy, In Vivo,Nuclear Magnetic Resonance,Spectroscopy, Magnetic Resonance,Spectroscopy, NMR,Spectroscopy, Nuclear Magnetic Resonance,Magnetic Resonance Spectroscopies,Magnetic Resonance, Nuclear,NMR Spectroscopies,Resonance Spectroscopy, Magnetic,Resonance, Magnetic,Resonance, Nuclear Magnetic,Spectroscopies, NMR,Spectroscopy, MR
D010744 Phosphoric Monoester Hydrolases A group of hydrolases which catalyze the hydrolysis of monophosphoric esters with the production of one mole of orthophosphate. Phosphatase,Phosphatases,Phosphohydrolase,Phosphohydrolases,Phosphomonoesterase,Phosphomonoesterases,Phosphoric Monoester Hydrolase,Hydrolase, Phosphoric Monoester,Hydrolases, Phosphoric Monoester,Monoester Hydrolase, Phosphoric
D011487 Protein Conformation The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain). Conformation, Protein,Conformations, Protein,Protein Conformations
D006736 Horses Large, hoofed mammals of the family EQUIDAE. Horses are active day and night with most of the day spent seeking and consuming food. Feeding peaks occur in the early morning and late afternoon, and there are several daily periods of rest. Equus caballus,Equus przewalskii,Horse, Domestic,Domestic Horse,Domestic Horses,Horse,Horses, Domestic
D000097024 Acylphosphatase An enzyme that catalyzes the conversion of an acylphosphate and water to a carboxylate and phosphate. Acetic Phosphatase,Acylphosphate Phosphohydrolase,CAP Phosphatase,Carbamyl Phosphate Phosphatase,Phosphatase, Acetic,Phosphatase, CAP,Phosphatase, Carbamyl Phosphate,Phosphate Phosphatase, Carbamyl,Phosphohydrolase, Acylphosphate
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000941 Antigens Substances that are recognized by the immune system and induce an immune reaction. Antigen
D017766 Acid Anhydride Hydrolases A group of enzymes that catalyze the hydrolysis of diphosphate bonds in compounds such as nucleoside di- and tri-phosphates, and sulfonyl-containing anhydrides such as adenylylsulfate. (Enzyme Nomenclature, 1992) EC 3.6. Anhydride Hydrolases, Acid,Hydrolases, Acid Anhydride

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