Výsledky vyhledávání - "N N, SHELLENBERG"

[Penicillin amidase from E. coli. Some physicochemical properties of the soluble enzyme]

Autor: E M, Savitskaia, P S, Nys, N N, Shellenberg

Publikováno v: Antibiotiki. 22(2)

Homogeneity of the enzyme was shown with the methods of gel filtration and disc electrophoresis. The molecular mass of penicillinamidase (PA) was determined. Sorption of PA by a carboxylic ion exchanger within a wide range of pH was studied. The valu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0b774deb49c7b25bd808ba1079ccf236
https://pubmed.ncbi.nlm.nih.gov/16562

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[Physicochemical properties of 7-phenylacetamidodesacetoxy-cephalosporanic acid]

Autor: P S, Nys, E V, Kol'tsova, N N, Shellenberg, E Ia, Zinchenko, N M, Riabova

Publikováno v: Antibiotiki. 21(4)

7-phenylacetamidodesacetoxycephalosporanic acid was prepared by transformation of benzylpenicillin. The acid was subjected to potentiometric titration and investigation of its electrophoretic mobility at wide pH ranges. The data of the potentiometric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e148bbf8d64abf4aac7ea4a3c5560aee
https://pubmed.ncbi.nlm.nih.gov/5950

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[Physico-chemical properties of 7-aminodesacetoxycephalosporanic acid]

Autor: P S, Nys, E V, Kol'tsova, N N, Shellenberg, E M, Savitskaia, M M, Levitov

Publikováno v: Antibiotiki. 21(5)

7-Aminodesacetoxycephalosporanic acid (7-ADCA) of 99 per cent purity was prepared by enzymatic hydrolysis of 7-phenylacetamidodesacetoxycephalosporanic acid. Its isoelecti point was determined by the electrophoretic method. Potentiometric titration o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e3b5cf662270a160caf8825319e14383
https://pubmed.ncbi.nlm.nih.gov/1023809

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[Penicillin amidase from E. coli. Some physicochemical properties of the enzyme incorporated into polyacrylamide gel]

Autor: N N, Shellenberg, P S, Nys, E M, Savitskaia

Publikováno v: Antibiotiki. 22(2)

The physico-chemical properties of penicillinamidase (PA) immobilized in polyacrylamide gel (IPA) were investigated. It was shown that simple incorporation of PA into polyacrylamide gel was not effective because of gradual washing out of the enzyme.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::c97123ea1dcc3807e91be30b3fa0c2de
https://pubmed.ncbi.nlm.nih.gov/16563

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[Penicillin amidase from E. coli. A comparative study of the stability of penicillin amidase immobilized by various means]

Autor: P S, Nys, E M, Savitskaia, N N, Shellenberg

Publikováno v: Antibiotiki. 22(2)

The properties of immobilized penicillinamidases prepared by different methods were studied. Immobilization of penicillinamidase was achieved by using the covalend binding ion exchange sorption, incorporation into gel and other procedures. The effect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::9fcc8fe40affbbad81a23f735ad82ec4
https://pubmed.ncbi.nlm.nih.gov/324383

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