scholarly journals Studies on Long Chain Alkyl Amides of Water-soluble Poly-α-amino Acids. I. Amphipathic Properties of Poly-DL-alanine Dodecylamide

1961 ◽  
Vol 34 (9) ◽  
pp. 1236-1242 ◽  
Author(s):  
Toshizo Isemura ◽  
Shoichi Ikeda ◽  
Fumikatsu Tokiwa ◽  
Junzo Noguchi
Keyword(s):  
Amino Acids ◽  
Water Soluble ◽  
Long Chain ◽  
Soluble Poly

scholarly journals The action of some water-soluble poly-α-amino-acids on blood clotting

1951 ◽  
Vol 49 (1) ◽  
pp. 10-17 ◽  
Author(s):  
A. De Vries ◽  
A. Schwager ◽  
E. Katchalski
Keyword(s):  
Amino Acids ◽  
Blood Clotting ◽  
Water Soluble ◽  
Soluble Poly

scholarly journals The action of some water-soluble poly-α-amino acids on bacteria

1953 ◽  
Vol 55 (4) ◽  
pp. 671-680 ◽  
Author(s):  
E. Katchalski ◽  
L. Bichowski-Slomnitzki ◽  
B. E. Volcani
Keyword(s):  
Amino Acids ◽  
Water Soluble ◽  
Soluble Poly

The Action of Some Water-Soluble Poly-agr-Amino Acids on Fibrinolysis

Science ◽  
1952 ◽  
Vol 116 (3001) ◽  
pp. 15-16 ◽  
Author(s):  
I. Ginsburg ◽  
A. de Vries ◽  
E. Katchalski
Keyword(s):  
Amino Acids ◽  
Water Soluble ◽  
Soluble Poly

Action of some Water-soluble Poly-α-Amino-Acids on Bacteria

Nature ◽  
1952 ◽  
Vol 169 (4313) ◽  
pp. 1095-1096 ◽  
Author(s):  
E. KATCHALSKI ◽  
L. BICHOVSKI-SLOMNITZKI ◽  
B. E. VOLCANI
Keyword(s):  
Amino Acids ◽  
Water Soluble ◽  
Soluble Poly

scholarly journals Optimizing Chitin Depolymerization by Lysozyme to Long-Chain Oligosaccharides

Marine Drugs ◽  
2021 ◽  
Vol 19 (6) ◽  
pp. 320
Author(s):  
Arnaud Masselin ◽  
Antoine Rousseau ◽  
Stéphanie Pradeau ◽  
Laure Fort ◽  
Rodolphe Gueret ◽  
...  
Keyword(s):  
Time Course ◽  
Water Soluble ◽  
Organic Fertilizers ◽  
Symbiotic Associations ◽  
Egg White Lysozyme ◽  
Hen Egg White ◽  
Ecological Transition ◽  
Optimized Conditions ◽  
Hydrolysis Of ◽  
Long Chain

Chitin oligosaccharides (COs) hold high promise as organic fertilizers in the ongoing agro-ecological transition. Short- and long-chain COs can contribute to the establishment of symbiotic associations between plants and microorganisms, facilitating the uptake of soil nutrients by host plants. Long-chain COs trigger plant innate immunity. A fine investigation of these different signaling pathways requires improving the access to high-purity COs. Here, we used the response surface methodology to optimize the production of COs by enzymatic hydrolysis of water-soluble chitin (WSC) with hen egg-white lysozyme. The influence of WSC concentration, its acetylation degree, and the reaction time course were modelled using a Box–Behnken design. Under optimized conditions, water-soluble COs up to the nonasaccharide were formed in 51% yield and purified to homogeneity. This straightforward approach opens new avenues to determine the complex roles of COs in plants.

Interactions of water-soluble zinc porphyrin with amino acids

1988 ◽  
Vol 153 (4) ◽  
pp. 199-200 ◽  
Author(s):  
E. Mikros ◽  
A. Gaudemer ◽  
R. Pasternack
Keyword(s):  
Amino Acids ◽  
Water Soluble ◽  
Zinc Porphyrin ◽  
Soluble Zinc

scholarly journals Incorporation of alternative amino acids into cyanophycin by different cyanophycin synthetases heterologously expressed in Corynebacterium glutamicum

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ramona Wördemann ◽  
Lars Wiefel ◽  
Volker F. Wendisch ◽  
Alexander Steinbüchel
Keyword(s):  
Amino Acids ◽  
Dry Weight ◽  
Growth Conditions ◽  
Amino Acid Biosynthesis ◽  
Water Soluble ◽  
Lysine Content ◽  
Polyaspartic Acid ◽  
Acid Biosynthesis ◽  
Cyanophycin Synthetase ◽  
Potential Precursor

AbstractCyanophycin (multi-l-arginyl-poly-l-aspartic acid; also known as cyanophycin grana peptide [CGP]) is a biopolymer that could be used in various fields, for example, as a potential precursor for the synthesis of polyaspartic acid or for the production of CGP-derived dipeptides. To extend the applications of this polymer, it is therefore of interest to synthesize CGP with different compositions. A recent re-evaluation of the CGP synthesis in C. glutamicum has shown that C. glutamicum is a potentially interesting microorganism for CGP synthesis with a high content of alternative amino acids. This study shows that the amount of alternative amino acids can be increased by using mutants of C. glutamicum with altered amino acid biosynthesis. With the DM1729 mutant, the lysine content in the polymer could be increased up to 33.5 mol%. Furthermore, an ornithine content of up to 12.6 mol% was achieved with ORN2(Pgdh4). How much water-soluble or insoluble CGP is synthesized is strongly related to the used cyanophycin synthetase. CphADh synthesizes soluble CGP exclusively. However, soluble CGP could also be isolated from cells expressing CphA6308Δ1 or CphA6308Δ1_C595S in addition to insoluble CGP in all examined strains. The point mutation in CphA6308Δ1_C595S partially resulted in a higher lysine content. In addition, the CGP content could be increased to 36% of the cell dry weight under optimizing growth conditions in C. glutamicum ATCC13032. All known alternative major amino acids for CGP synthesis (lysine, ornithine, citrulline, and glutamic acid) could be incorporated into CGP in C. glutamicum.

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