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Substitutions for Glu-537 of beta-galactosidase from Escherichia coli cause large decreases in catalytic activity.
Glu-537 of beta-galactosidase (EC 3.2.1.23) was replaced by Asp, Gln and Val using synthetic oligonucleotides. The kcat values of the purified enzyme mixtures were reduced by about 100-fold for the Asp mutant, 30,000-60,000-fold for the Val mutant and 160,000-300,000-fold for the Gln mutant. The gre...
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| Main Authors: | , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1994
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1138303/ https://ncbi.nlm.nih.gov/pubmed/7909660 |
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