Modified beta-lactamase and method for its preparation

The invention relates to targeted post translational modification of metallo-beta-lactamase by truncation and insertion of a dipeptide at the amino terminal end to reduce amino terminal heterogeneity in a recombinant DNA production system. A protein K-T-E- BL is expressed, and modified by host prote...

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Bibliographic Details
Main Authors WICKSTRAND NINA, KOSKI PERTTI, KAEAERIAEINEN SUSANNA
Format Patent
LanguageEnglish
Published 02.08.2011
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF
CULTURE MEDIA
DERIVATIVES THEREOF
ENZYMOLOGY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MUTATION OR GENETIC ENGINEERING
NUCLEIC ACIDS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SPIRITS
SUGARS
VINEGAR
WINE
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Summary:The invention relates to targeted post translational modification of metallo-beta-lactamase by truncation and insertion of a dipeptide at the amino terminal end to reduce amino terminal heterogeneity in a recombinant DNA production system. A protein K-T-E- BL is expressed, and modified by host proteases to E- BL. Appropriate nucleotide molecules, vectors and hosts are also described. E- BL is useful in a pharmaceutical composition for treating antibiotic induced adverse effects in the intestine of patients treated with beta-lactam antibiotics.
Bibliography:Application Number: US20070304874