Search for dissertations about: "catalytic promiscuity"

Showing result 1 - 5 of 12 swedish dissertations containing the words catalytic promiscuity.

2. 1. Promiscuity and Selectivity in Phosphoryl Transferases

   Author : Alexandre Barrozo; Shina Kamerlin; Qiang Cui; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphate chemistry; linear free energy relationships; phosphatase; catalytic promiscuity; empirical valence bond approach; alkaline phosphatase;

   Abstract : Phosphoryl transfers are essential chemical reactions in key life processes, including energy production, signal transduction and protein synthesis. They are known for having extremely low reaction rates in aqueous solution, reaching the scale of millions of years. READ MORE

4. 2. Exploiting enzyme promiscuity for rational design

   Author : Cecilia Branneby; Karl Hult; Alex Zaks; KTH; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Candida antarctica lipase B; alanine racemase; substrate specificity; reaction specificity; enzyme catalytic promiscuity; Biokemi; Biochemistry; Biokemi;

   Abstract : Enzymes are today well recognized in various industrial applications, being an important component in detergents, and catalysts in the production of agrochemicals, foods, pharmaceuticals, and fine chemicals. Their large use is mainly due to their high selectivity and environmental advantage, compared to traditional catalysts. READ MORE

5. 3. Towards Classification and Functional Description of Enzymes: A case study of feruloyl esterases

   Author : Gupta Udatha; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; descriptors; enzyme immobilization; catalytic triad; pharmacophore; enzyme promiscuity; functional classification; molecular docking; feruloyl esterases; protein evolution; structure-function relationship;

   Abstract : The prediction of enzyme functionality from sequence or structure data remains a challenging task that can be best addressed by studying the structure-function relationships determined from previously available information. This thesis work was focused on developing a reliable classification and functional description for the feruloyl esterase (FAE) enzyme family, whose members’ possess both structural and catalytic promiscuity. READ MORE

6. 4. Lipase and ω-Transaminase : Biocatalytic Investigations

   Author : Maria Svedendahl; Per Berglund; Stefan Stefan Lutz; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Candida antarctica lipase B; enzyme catalysis; enzyme catalytic promiscuity; molecular modeling; ω-transaminase; Biochemistry; Biokemi;

   Abstract : In a lipase investigation, Candida antarctica lipase B (CALB) are explored for enzyme catalytic promiscuity. Enzyme catalytic promiscuity is shown by enzymes catalyzing alternative catalytic transformations proceeding via different transition state structures than normal. READ MORE

7. 5. Dynamic Covalent Resolution: Applications in System Screening and Asymmetric Synthesis

   Author : Pornrapee Vongvilai; Olof Ramström; Benjamin Miller; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dynamic covalent kinetic combinatorial resolution; Self-screening; Transesterification; Amidation; Enzyme catalysis; Nitroaldol reaction; Secondary alcohols; Strecker reaction; Aminonitriles; Racemase; Enzyme catalytic promiscuity; Chemistry; Kemi; Organic chemistry; Organisk kemi; Bioorganic chemistry; Bioorganisk kemi;

   Abstract : Combined thermodynamic/kinetic events amount to a kinetically controlled Dynamic Combinatorial Resolution (DCR) process, where the lability of themolecules/aggregates are used to generate dynamics, and the species experiencing the lowest activation energy is selected via kinetic process. Bothinter- and intramolecular processes can be performed using this concept,resulting in complete resolution and associated amplification of the selected species. READ MORE