| pubmed-article:8606149 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0038410 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0237868 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0007623 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0333717 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0036679 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0486616 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0030834 | lld:lifeskim |
| pubmed-article:8606149 | lifeskim:mentions | umls-concept:C0040684 | lld:lifeskim |
| pubmed-article:8606149 | pubmed:issue | 7 | lld:pubmed |
| pubmed-article:8606149 | pubmed:dateCreated | 1996-5-17 | lld:pubmed |
| pubmed-article:8606149 | pubmed:abstractText | Compared with most penicillin-susceptible isolates of Streptococcus pneumoniae, penicillin-resistant clinical isolate Hun 663 contains mosaic penicillin-binding protein (PBP) genes encoding PBPs with reduced penicillin affinities, anomalous molecular sizes, and also cell walls of unusual chemical composition. Chromosomal DNA prepared from Hun 663 was used to transform susceptible recipient cells to donor level penicillin resistance, and a resistant transformant was used next as the source of DNA in the construction of a second round of penicillin-resistant transformants. The greatly reduced penicillin affinity of the high-molecular-weight PBPs was retained in all transformants through both genetic crosses. On the other hand, PBP pattern and abnormal cell wall composition, both of which are stable, clone-specific properties of strain Hun 663, were changed: individual transformants showed a variety of new, abnormal PBP patterns. Furthermore, while the composition of cell walls resembled that of the DNA donor in the first-round transformants, it became virtually identical to that of susceptible pneumococci in the second-round transformants. The findings indicate that genetic elements encoding the low affinity of PBPs and the penicillin resistance of the bacteria are separable from determinants that are responsible for the abnormal cell wall composition that often accompanies penicillin resistance in clinical strains of pneumococci. | lld:pubmed |
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| pubmed-article:8606149 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8606149 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8606149 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:8606149 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8606149 | pubmed:month | Apr | lld:pubmed |
| pubmed-article:8606149 | pubmed:issn | 0021-9193 | lld:pubmed |
| pubmed-article:8606149 | pubmed:author | pubmed-author:TomaszAA | lld:pubmed |
| pubmed-article:8606149 | pubmed:author | pubmed-author:FigueiredoA... | lld:pubmed |
| pubmed-article:8606149 | pubmed:author | pubmed-author:SeverinAA | lld:pubmed |
| pubmed-article:8606149 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8606149 | pubmed:volume | 178 | lld:pubmed |
| pubmed-article:8606149 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8606149 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8606149 | pubmed:pagination | 1788-92 | lld:pubmed |
| pubmed-article:8606149 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:8606149 | pubmed:year | 1996 | lld:pubmed |
| pubmed-article:8606149 | pubmed:articleTitle | Separation of abnormal cell wall composition from penicillin resistance through genetic transformation of Streptococcus pneumoniae. | lld:pubmed |
| pubmed-article:8606149 | pubmed:affiliation | Laboratory of Microbiology, The Rockefeller University, New York, New York, USA. | lld:pubmed |
| pubmed-article:8606149 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:8606149 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
| pubmed-article:8606149 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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