| pubmed-article:4561386 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:4561386 | lifeskim:mentions | umls-concept:C0014834 | lld:lifeskim |
| pubmed-article:4561386 | lifeskim:mentions | umls-concept:C0014442 | lld:lifeskim |
| pubmed-article:4561386 | lifeskim:mentions | umls-concept:C0002059 | lld:lifeskim |
| pubmed-article:4561386 | lifeskim:mentions | umls-concept:C2603343 | lld:lifeskim |
| pubmed-article:4561386 | pubmed:issue | 5 | lld:pubmed |
| pubmed-article:4561386 | pubmed:dateCreated | 1972-11-19 | lld:pubmed |
| pubmed-article:4561386 | pubmed:abstractText | 1. The stability of the tetrameric form of Escherichia coli alkaline phosphatase was examined by analytical ultracentrifugation. 2. The stopped-flow technique was used to study the hydrolysis of nitrophenyl phosphates by the alkaline phosphatase tetramer at pH7.5 and 8.3. In both cases transient product formation was observed before the steady state was attained. Both transients consisted of the liberation of 1mol of nitrophenol/2mol of enzyme subunits within the dead-time of the apparatus. The steady-state rates were identical with those observed with the dimer under the same conditions. 3. The binding of 2-hydroxy-5-nitrobenzyl phosphonate to the alkaline phosphatase tetramer was studied by the temperature-jump technique. The self-association of two dimers to form the tetramer is linked to a conformation change within the dimer. This accounts for the differences between the transient phases in the reactions of the dimer and the tetramer with substrate. 4. Addition of P(i) to the alkaline phosphatase tetramer caused it to dissociate into dimers. The tetramer is unable to bind this ligand. It is suggested that the tetramer undergoes a compulsory dissociation before the completion of its first turnover with substrate. 5. On the basis of these findings a mechanism is proposed for the involvement of the alkaline phosphatase tetramer in the physiology of E. coli. | lld:pubmed |
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| pubmed-article:4561386 | pubmed:language | eng | lld:pubmed |
| pubmed-article:4561386 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:4561386 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:4561386 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:4561386 | pubmed:month | Mar | lld:pubmed |
| pubmed-article:4561386 | pubmed:issn | 0264-6021 | lld:pubmed |
| pubmed-article:4561386 | pubmed:author | pubmed-author:GutfreundHH | lld:pubmed |
| pubmed-article:4561386 | pubmed:author | pubmed-author:HalfordS ESE | lld:pubmed |
| pubmed-article:4561386 | pubmed:author | pubmed-author:SchlesingerM... | lld:pubmed |
| pubmed-article:4561386 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:4561386 | pubmed:volume | 126 | lld:pubmed |
| pubmed-article:4561386 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:4561386 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:4561386 | pubmed:pagination | 1081-90 | lld:pubmed |
| pubmed-article:4561386 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:4561386 | pubmed:meshHeading | pubmed-meshheading:4561386-... | lld:pubmed |
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| pubmed-article:4561386 | pubmed:meshHeading | pubmed-meshheading:4561386-... | lld:pubmed |
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| pubmed-article:4561386 | pubmed:meshHeading | pubmed-meshheading:4561386-... | lld:pubmed |
| pubmed-article:4561386 | pubmed:year | 1972 | lld:pubmed |
| pubmed-article:4561386 | pubmed:articleTitle | Escherichia coli alkaline phosphatase. Kinetic studies with the tetrameric enzyme. | lld:pubmed |
| pubmed-article:4561386 | pubmed:publicationType | Journal Article | lld:pubmed |
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