References of "1973"
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See detailEtude du Rorschach d'une enfant suicidante
Mormont, Christian ULiege

in Acta Psychiatrica Belgica (1973), 73

Describes the case of 10-yr-old girl whose suicidal ideation was reflected in her Rorschach record.

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See detailEtude du Rorschach d'une jeune épileptique ne présentant pas de paroxysme
Mormont, Christian ULiege; Servais, Jean-François

in Acta Psychiatrica Belgica (1973), 73(3), 379-386

Reports the case study of a 12-yr-old female epileptic who was not presenting seizures but who appeared to suffer from a behavior disorder. The study exemplifies the role the Rorschach test can play in ... [more ▼]

Reports the case study of a 12-yr-old female epileptic who was not presenting seizures but who appeared to suffer from a behavior disorder. The study exemplifies the role the Rorschach test can play in the early detection of such disorders. The epileptic component had been overlooked but was later confirmed by EEG. Specific treatment produced improvement of the behavior disturbance. [less ▲]

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See detailStreptomyces DD-carboxypeptidases as transpeptidases. The specificity for amino compounds acting as carboxyl acceptors
Perkins, Harnold R.; Nieto, Manuel; Frère, Jean-Marie ULiege et al

in Biochemical Journal (1973), 131(4), 707-718

The ability of the water-soluble dd-carboxypeptidases of Streptomyces strains albus G, R61, K11 and R39 to perform transpeptidation was studied. The donor was diacetyl-l-lysyl-d-alanyl-d-alanine, and a ... [more ▼]

The ability of the water-soluble dd-carboxypeptidases of Streptomyces strains albus G, R61, K11 and R39 to perform transpeptidation was studied. The donor was diacetyl-l-lysyl-d-alanyl-d-alanine, and a whole range of amino acids, peptides and structurally related amino compounds were tested for acceptor function. No compound tested was an acceptor for the enzyme from strain albus G whereas the enzymes from strains R61 and K11 could utilize with varying efficiency a wide range of substances including peptides with N-terminal glycine or d-alanine, omega-amino acids, aminohexuronic acids, 6-aminopenicillanic acid and d-cycloserine. Certain peptides, when present in higher concentration, inhibited the transpeptidation observed at lower concentration. The enzyme from strain R39 would not use any dipeptide as an acceptor, but a few compounds that were not glycine or alpha-amino acids of the d-configuration did function thus. These were d-cycloserine and the lactams of meso- or racemic-diaminoadipic acid. [less ▲]

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See detailQuelques aspects psychologiques du comportement suicidaire
Mormont, Christian ULiege

in Revue Médicale de Liège (1973), 28(5), 151-154

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See detailDD-carboxypeptidase-transpeptidase and killing site of β-lactam antibiotics in Streptomyces strains R39, R61, and K11
Dusart, Jean; Marquet, Alberto; Ghuysen, Jean-Marie ULiege et al

in Antimicrobial Agents and Chemotherapy (1973), 3(2), 181-187

Additional evidence is given that in Streptomyces strains R39, R61, and K11 the same enzyme performs dd-carboxypeptidase and transpeptidase activities and that this enzyme is the killing site of beta ... [more ▼]

Additional evidence is given that in Streptomyces strains R39, R61, and K11 the same enzyme performs dd-carboxypeptidase and transpeptidase activities and that this enzyme is the killing site of beta-lactam antibiotics. With strain R61, it was found that the exocellular enzyme has a sensitivity towards some antibiotics different from that of the membrane-bound enzyme. Under the growth conditions used in the present investigations, beta-lactamase activity was not involved in susceptibility to beta-lactam antibiotics. [less ▲]

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See detailExocellular β-lactamases of Streptomyces albus G and strains R39 and K11
Johnson, Kenneth; Dusart, Jean; Campbell, James N. et al

in Antimicrobial Agents and Chemotherapy (1973), 3(2), 289-298

The beta-lactamases excreted by the highly benzylpenicillin-susceptible Streptomyces strain R39 and the highly benzylpenicillin-resistant Streptomyces albus G were isolated and purified. Neither beta ... [more ▼]

The beta-lactamases excreted by the highly benzylpenicillin-susceptible Streptomyces strain R39 and the highly benzylpenicillin-resistant Streptomyces albus G were isolated and purified. Neither beta-lactamase exhibited dd-carboxypeptidase activity. Both were anionic at pH 8.3, did not require metal ions, and were not sensitive to iodine, but were inhibited by Cu(2+) and readily inactivated by heat. p-Chloromercuribenzoate, iodoacetate, p-aminobenzoate, and substrates and inhibitors of dd-carboxypeptidase had no effect on beta-lactamase activity. The K(m) and V(max) values for beta-lactamase activity were studied with 6-aminopenicillanic acid and with various penicillins and cephalosporins. The beta-lactamase from the related strain K11 of Streptomyces, which is intermediate in its susceptibility to benzylpenicillin, was partially purified, and its activity was compared on the various substrates. [less ▲]

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See detailOrganisation d'une bibliothèque de programmes statistiques pour ordinateur : exemples
Carletti, G.; Claustriaux, Jean-Jacques ULiege; Dagnelie, P. et al

in Revue Belge de Statistique, d'Informatique et de Recherche Opérationnelle = Belgisch Tijdschrift voor Statistiek, Informatica en Operationeel Onderzoek (1973), 12(4), 2-16

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See detailPeptide inhibitors of Streptomyces DD-carboxypeptidases
Nieto, Manuel; Perkins, Harnold R.; Leyh-Bouille, Mélina et al

in Biochemical Journal (1973), 131(1), 163-171

1. Peptides that inhibit the dd-carboxypeptidases from Streptomyces strains albus G and R61 were synthesized. They are close analogues of the substrates of these enzymes. The enzymes from albus G and R61 ... [more ▼]

1. Peptides that inhibit the dd-carboxypeptidases from Streptomyces strains albus G and R61 were synthesized. They are close analogues of the substrates of these enzymes. The enzymes from albus G and R61 strains are in general inhibited by the same peptides, but the enzyme from strain R39 differs considerably. 2. The two C-terminal residues of the peptide substrates and inhibitors appear to be mainly responsible for the initial binding of the substrate to the enzymes from albus G and R61 strains. The side chain in the third residue from the C-terminus seems critical in inducing catalytic activity. 3. Experimental evidence is presented suggesting that the amide bond linking the two C-terminal residues has a cis configuration when bound to the enzymes from strains albus G and R61. 4. The peptide inhibitors are not antibiotics against the same micro-organisms. [less ▲]

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See detailCorrélations entre divers paramètres anthropométriques, l'eau corporelle et le potassium total
Delwaide, P. A.; Crenier, E. J.; Albert, Adelin ULiege

in Biométrie Humaine (1973), 8

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See detailStructure of the wall peptidoglycan of streptomyces R39 and the specificity profile of its exocellular DD-carboxypeptidase-transpeptidase for peptide acceptors
Ghuysen, Jean-Marie ULiege; Leyh-Bouille, Mélina; Campbell, James N. et al

in Biochemistry (1973), 12(7), 1243-1251

Benzylpenicillin and cephaloridine reacted with the exocellular dd-carboxypeptidase–transpeptidase from Streptomyces R39 to form equimolar and inactive antibiotic–enzyme complexes. At saturation, the ... [more ▼]

Benzylpenicillin and cephaloridine reacted with the exocellular dd-carboxypeptidase–transpeptidase from Streptomyces R39 to form equimolar and inactive antibiotic–enzyme complexes. At saturation, the molar ratio of chromogenic cephalosporin 87-312 to enzyme was 1.3:1, but this discrepancy might be due to a lack of accuracy in the measurement of the antibiotic. Spectrophotometric studies showed that binding of cephaloridine and cephalosporin 87-312 to the enzyme caused opening of their β-lactam rings. Benzylpenicillin and cephalosporin 87-312 competed for the same site on the free enzyme, suggesting that binding of benzylpenicillin also resulted in the opening of its β-lactam ring. In Tris–NaCl–MgCl2 buffer at pH7.7 and 37°C, the rate constants for the dissociation of the antibiotic–enzyme complexes were 2.8×10−6, 1.5×10−6 and 0.63×10−6s−1 (half-lives 70, 130 and 300h) for benzylpenicillin, cephalosporin 87-312 and cephaloridine respectively. During the process, the protein underwent reactivation. The enzyme that was regenerated from its complex with benzylpenicillin was as sensitive to fresh benzylpenicillin as the native enzyme. With [14C]benzylpenicillin, the released radioactive compound was neither benzylpenicillin nor benzylpenicilloic acid. The Streptomyces R39 enzyme thus behaved as a β-lactam-antibiotic-destroying enzyme but did not function as a β-lactamase. Incubation at 37°C in 0.01m-phosphate buffer, pH7.0, and in the same buffer supplemented with sodium dodecyl sulphate caused a more rapid reversion of the [14C]benzylpenicillin–enzyme complex. The rate constants were 1.6×10−5s−1 and 0.8×10−4s−1 respectively. Under these conditions, however, there was no concomitant reactivation of the enzyme and the released radioactive compound(s) appeared not to be the same as before. The Streptomyces R39 enzyme and the exocellular dd-carboxypeptidase–transpeptidase from Streptomyces R61 appeared to differ from each other with regard to the topography of their penicillin-binding site. [less ▲]

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See detailExocellular and membrane-bound transpeptidases in Streptomyces
Dusart, Jean; Marquet, A.; Ghuysen, Jean-Marie ULiege

in 1st International Congress for Bacteriology, Jerusalem, 2-7 September, 1973. Abstracts. Vol. II. Free papers. (1973)

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See detailThe first long acting "retard" thymoanaleptic or antidepressant: noveril Tr. statistical addendum
Albert, Adelin ULiege; Collard, J.; Fraipont, J. et al

in Arzneimittel Forschung (1973), 4

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See detailFotoelektronen Spectroscopie: een nieuwe analyse techniek.
Locht, Robert ULiege; Delwiche, Jacques ULiege

in Chemisch Weekblad (1973), 69(28/29),

Beside the IR-, Raman- and UV-spectroscopies the photoelectron spectroscopy becomes an important technique for the qualitative and quantitative analysis of unknown samples. Important informations related ... [more ▼]

Beside the IR-, Raman- and UV-spectroscopies the photoelectron spectroscopy becomes an important technique for the qualitative and quantitative analysis of unknown samples. Important informations related to the electronic and molecular structure can be obtained by this technique. [less ▲]

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See detailEtude de la fiabilité du SMA 12/60.
Vos, A.; Ers, P.; Albert, Adelin ULiege et al

in Expansion scientifique française (1973)

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See detailMots oubliés du Dictionnaire liégeois de Henri Forir
Droixhe, Daniel ULiege

in Musée herstalien (1973)

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See detailModern aspecs of treatment of decompression sickness
Lamy, Maurice ULiege; Hanquet, M. M.

in Acta Anaesthesiologica Belgica (1973), 24(3), 215-29

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See detailGamma-glutamylphenylalanine in Dolichos seeds
Dardenne, G. A.; Thonart, Philippe ULiege

in Phytochemistry (1973), 12

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See detailUnivers mental et stratégies des évêques : la déclaration sur l'avortement
Mormont, Marc ULiege; Mougenot, Catherine ULiege; Rucquoy, Danielle

in Social Compass (1973), 10

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See detailApplications de programmes d’ordinateur aux textes relatifs aux ousiai : méthode et traitement
Denooz, Joseph ULiege

in Actes du XIIIe Congrès international de papyrologie (1973)

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See detailLe lexique botanique wallon dans la Statistique de la province de Liège de Richard Courtois (1828)
Droixhe, Daniel ULiege

in Dialectes de Wallonie (1973), 2

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