Výsledky vyhledávání - "Władysław T. Dobrzański"

Purification and Properties of Deoxyribonucleic Acid Binding Factor Isolated from the Surface of Streptococcus sanguis Cells

Autor: Marian Kawczyński, Piotr Cegłowski, Władysław T. Dobrzański

Publikováno v: Journal of Bacteriology. 141:1005-1014

Deoxyribonucleic acid (DNA) binding factor (BF) was found in surface fluids from competent and noncompetent cells of Streptococcus sanguis strains Challis, Wicky, and Blackburn. Fluids from noncompetent cells exhibited about 10% BF activity compared

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3060f9ee35cf138e59baad82c9adecc
https://doi.org/10.1128/jb.141.3.1005-1014.1980

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Role of Streptococcus sanguis (strain Wicky) cell surface-located deoxyribonucleic acid-binding factor in transformation of a homologous strain

Autor: Kawczyński M, Piotr Cegłowski, Władysław T. Dobrzański

Publikováno v: Journal of Bacteriology. 146:1-6

In a previous report we demonstrated the presence of a factor binding deoxyribonucleic acid (DNA) in vitro (BF) in cell leakage fluids from transformable Streptococcus sanguis strains Wicky, Challis, and Blackburn. BF originating from strain Wicky wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef01d22631723e273a7b4689c334b572
https://doi.org/10.1128/jb.146.1.1-6.1981

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Lactostrepcins - acid bacteriocins produced by lactic streptococci

Autor: Władysław T. Dobrzański, Jacek Bardowski, Witold Kozak

Publikováno v: Journal of Dairy Research. 45:247-257

SummaryAll 47 non-nisin producing strains ofStreptococcus lactisand 12/13 strains ofStr. lactissubsp.diacetylactisexamined produced bacteriocins, for which the term lactostrepcins is suggested. Seven strains ofStr. cremorisexamined produced no bacter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ef8da23e6fc729884eef8722ca323f4
https://doi.org/10.1017/s0022029900016423

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The Effect of Proflavin, Ethidium Bromide and an Elevated Temperature on the Appearance of Nisin-negative Clones in Nisin-producing Strains of Streptococcus lactis

Autor: Marianna Rajchert-Trzpil, Władysław T. Dobrzański, Witold Kozak

Publikováno v: Journal of General Microbiology. 83:295-302

SUMMARY: In some nisin-producing strains of Streptococcus lactis, clones which were permanently incapable of producing nisin (Nis-) appeared spontaneously with a frequency of 0.03 to 0.82%. Treatment with proflavin (Pro), ethidium bromide (EB) or at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2c10f09e1b8926cca737e8066482a67
https://doi.org/10.1099/00221287-83-2-295

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The mechanism of competence in the transformation of streptococci of serological group H

Autor: J. NaŁecz, Marianna Rajchert-Trzpil, Władysław T. Dobrzański

Publikováno v: Molecular and General Genetics MGG. 108:312-321

The production of a special competence factor (cpf) by the recipient cells is one of the key-elements of the complex mechanims of competence in transformation. The role of cpf and its interrelation with the other factors involved in competence remain

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e170720c0d405352c6d1feaaa54d83d0
https://doi.org/10.1007/bf00267768

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Influence of Mutagenic Agents on the Integration of the F Episome into the Chromosome of Escherichia coli k12 F+

Autor: Władysław T. Dobrzański, Marianna Rajchert-Trzpil

Publikováno v: Journal of General Microbiology. 54:47-57

SUMMARY: Escherichia coli F+ donor bacteria were treated with u.v. radiation, mitomycin C, nitrous acid, hydroxylamine or caffeine, and then incubated for various periods in broth at 37° before conjugation. U.v. radiation, mitomycin C and nitrous ac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c576fb6c385c838e567ba5a822a1cd7
https://doi.org/10.1099/00221287-54-1-47

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Mechanism of competence in the transformation of streptococci of serological group H. The role of the competence factor and the factor inactivating transforming DNA in vitro in DNA uptake

Autor: Piotr Cegłowski, Władysław T. Dobrzański

Publikováno v: Moleculargeneral genetics : MGG. 130(4)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd45643dee671b17e25663c414b31eb9
https://pubmed.ncbi.nlm.nih.gov/4853127

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Nuclease content of group H Streptococcus strain Challis cell surface extracts inactivating transforming deoxyribonucleic acid

Autor: Ceglowski P, Starościak Bj, Władysław T. Dobrzański

Publikováno v: Journal of bacteriology. 123(1)

Besides the competence factor (cpf), the activity of nuclease present in cell surface extracts (iF) is most likely necessary for the occurrence of competence in transformation of Challis strain and other group H streptococci. Very small amounts of iF

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d92ae83126622289329b41babeda952f
https://pubmed.ncbi.nlm.nih.gov/1141194

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Lysogeny in lactic streptococci producing and not producing nisin

Autor: Władysław T. Dobrzański, Witold Kozak, Jolanta Zajdel, Marianna Rajchert-Trzpil

Publikováno v: Applied microbiology. 25(2)

Eighty-seven strains of lactic streptococci (46 of Streptococcus lactis , 24 of S. diacetilactis , and 17 of S. cremoris ) were tested for lysogeny; 12 S. lactis strains produced nisin. Lysogeny was found in five S. lactis strains (two of them were n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2cd8fc4d8740cc5a1319f11335390d4
https://pubmed.ncbi.nlm.nih.gov/4632856

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