Institution
Novozymes
Company•Copenhagen, Denmark•
About: Novozymes is a company organization based out in Copenhagen, Denmark. It is known for research contribution in the topics: Nucleic acid & Polynucleotide. The organization has 2506 authors who have published 2828 publications receiving 89266 citations. The organization is also known as: Novo Enzymes A/S & Novozymes A/S.
Topics: Nucleic acid, Polynucleotide, Fermentation, Lipase, Cellulase
Papers published on a yearly basis
Papers
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TL;DR: This study identified TresMan5A as the best endomannanase for increasing cellulase catalysed glucose release from softwood and illustrated the importance of using genuine lignocellulosic substrates rather than simple model substrates when selecting enzymes for industrial biomass applications.
Abstract: Softwood is a promising feedstock for lignocellulosic biorefineries, but as it contains galactoglucomannan efficient mannan-degrading enzymes are required to unlock its full potential. Boosting of the saccharification of pretreated softwood (Canadian lodgepole pine) was investigated for 10 fungal endo-β(1→4)-mannanases (endomannanases) from GH5 and GH26, including 6 novel GH26 enzymes. The endomannanases from Trichoderma reesei (TresMan5A) and Podospora anserina (PansMan26) were investigated with and without their carbohydrate-binding module (CBM). The pH optimum and initial rates of enzyme catalysed hydrolysis were determined on pure β-mannans, including acetylated and deacetylated spruce galactoglucomannan. Melting temperature (Tm) and stability of the endomannanases during prolonged incubations were also assessed. The highest initial rates on the pure mannans were attained by GH26 endomannanases. Acetylation tended to decrease the enzymatic rates to different extents depending on the enzyme. Despite exhibiting low rates on the pure mannan substrates, TresMan5A with CBM1 catalysed highest release among the endomannanases of both mannose and glucose during softwood saccharification. The presence of the CBM1 as well as the catalytic capability of the TresMan5A core module itself seemed to allow fast and more profound degradation of portions of the mannan that led to better cellulose degradation. In contrast, the presence of the CBM35 did not change the performance of PansMan26 in softwood saccharification. This study identified TresMan5A as the best endomannanase for increasing cellulase catalysed glucose release from softwood. Except for the superior performance of TresMan5A, the fungal GH5 and GH26 endomannanases generally performed on par on the lignocellulosic matrix. The work also illustrated the importance of using genuine lignocellulosic substrates rather than simple model substrates when selecting enzymes for industrial biomass applications.
27 citations
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TL;DR: This work cloned the dehydrogenase from Humicola insolens, which encodes a protein of 761 amino acid residues containing an N-terminal heme domain and a C-terminals flavin domain, and studied how the catalyzed electron transfers are regulated, demonstrating that with a reduced flavin center, the enzyme could export electron from its heme center by a "outer-sphere" mechanism.
27 citations
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TL;DR: Improved diagnostic confidence is an indication of one aspect of construct validity of the physical examination, and further studies are required for determination of clinical feasibility of the examination.
Abstract: In a sample of patients in clinical occupational medicine we have demonstrated that an upper limb neurological examination can reliably identify patterns of findings suggesting upper limb focal neuropathies. This further study aimed at approaching the diagnostic accuracy of the examination. 82 limbs were semi-quantitatively assessed by two blinded examiners (strength in 14 individual muscles, sensibility in 7 homonymous territories, and mechanosensitivity at 10 locations along nerves). Based on the topography of nerves and their muscular and sensory innervation we defined 10 neurological patterns each suggesting a localized nerve affliction. Information on complaints (pain, weakness and/or numbness/tingling) collected by others served as a reference for comparison. The relation between the presence of pattern(s) and complaints was assessed by κ-statistics. Sensitivity, specificity, and positive/negative predictive values were calculated, and pre-test odds were compared to post-test probability. The two examiners identified pattern(s) suggesting focal neuropathy in 34/36 out of 38 symptomatic limbs, respectively (κ = 0.70/0.75), with agreement in 28 limbs. Out of 44 non-symptomatic limbs the examiners agreed on absence of any pattern in 38 limbs. With concordance between the examiners with regard to the presence or absence of any pattern, the sensitivity, specificity, positive and negative predictive values were 0.73, 0.86, 0.93 and 0.90, respectively. While the pre-test odds for a limb to be symptomatic amounted to 0.46 the post-test probability was 0.81. For each examiner the post-test probability was 0.87 and 0.88, respectively. The improved diagnostic confidence is an indication of one aspect of construct validity of the physical examination. For determination of clinical feasibility of the examination further studies are required, most importantly 1) studies of validity by means of comparison with additional references and 2) studies of the potential benefit that can be attained from its use.
27 citations
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22 Mar 2013TL;DR: In this article isolated lipase variants, comprising a substitution at one or more positions corresponding to positions I86D,E,N,Q, E87C, I90D, E,Q and N92D have lipase activity.
Abstract: The present invention relates to isolated lipase variants, comprising a substitution at one or more positions corresponding to positions I86D,E,N,Q, E87C, I90D,E,Q, and N92D,E,Q of the mature polypeptide of SEQ ID NO: 2, wherein the variant has lipase activity. In some embodiments the present invention relates to isolated polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; methods of producing the variants; and compositions comprising the variants. The present invention also relates to methods of obtaining lipase variants; methods of cleaning; and use of lipase variants for cleaning.
27 citations
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TL;DR: Differences in conversion rates and regioselectivity were nevertheless observed, and, to rationalize the results, diffusion of D2 and D3 on the molecular structure of the two enzymes was performed with PELE software and simulations indicate more favorable energy profiles for the substrates’ entrance in C. cinerea than for A. aegerita.
27 citations
Authors
Showing all 2507 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jens Nielsen | 149 | 1752 | 104005 |
Gary K. Schoolnik | 81 | 233 | 27782 |
Lubbert Dijkhuizen | 75 | 424 | 21761 |
Bauke W. Dijkstra | 72 | 256 | 19487 |
Michel Vert | 69 | 333 | 17899 |
Henning Langberg | 60 | 242 | 11999 |
Harinderjit Gill | 59 | 319 | 12978 |
John M. Woodley | 58 | 420 | 13426 |
Lei Cai | 57 | 374 | 16689 |
Anette Müllertz | 57 | 274 | 10319 |
Peter J. Punt | 52 | 154 | 8846 |
Svein Jarle Horn | 51 | 123 | 9511 |
Martin Hofrichter | 50 | 158 | 7387 |
Eva Stoger | 49 | 127 | 8367 |
Luciano Saso | 45 | 325 | 7672 |