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Showing 1-30 of 39 results for "A70909" within Papers
José Luis Martínez-Hernández et al.
Applied biochemistry and biotechnology, 160(7), 2045-2053 (2009-09-22)
The production of extracellular and mycelia-associated penicillin G acylase (maPGA) with Mucor griseocyanus H/55.1.1 by surface-adhesion fermentation using Opuntia imbricata, a cactus, as a natural immobilization support was studied. Enzyme activity to form 6-aminopencillanic acid (6-APA) from penicillin G was
Yangyang Jiang et al.
Applied biochemistry and biotechnology, 144(2), 145-159 (2008-05-06)
A dodecane/thermosensitive polymer/water three-liquid-phase system was introduced for enzymatic hydrolysis of penicillin G (Pen G) for 6-aminopenicillanic acid (6-APA). The enzyme was covalently attached to the terminal of PEO-PPO-PEO polymer (L63), which would be transferred into a polymer coacervate phase
Zhiqiang Chen et al.
Journal of hazardous materials, 185(2-3), 905-913 (2010-10-26)
A full-scale test was conducted with an up-flow anaerobic sludge blanket (UASB) pre-treating pharmaceutical wastewater containing 6-aminopenicillanic acid (6-APA) and amoxicillin. The aim of the study is to investigate the performance of UASB in the condition of a high chemical
The Garrod lecture. The influence of 6-aminopenicillanic acid on antibiotic development.
G N Rolinson
The Journal of antimicrobial chemotherapy, 22(1), 5-14 (1988-07-01)
Weihua Song et al.
The journal of physical chemistry. A, 112(32), 7411-7417 (2008-07-22)
Many pharmaceutical compounds and metabolites are being found in surface and ground waters, indicating their ineffective removal by conventional wastewater treatment technologies. Advanced oxidation/reduction processes (AO/RPs), which utilize free-radical reactions to directly degrade chemical contaminants, are alternatives to traditional water
Guolin Li et al.
Cell metabolism, 26(4), 672-685 (2017-09-19)
While activation of beige thermogenesis is a promising approach for treatment of obesity-associated diseases, there are currently no known pharmacological means of inducing beiging in humans. Intermittent fasting is an effective and natural strategy for weight control, but the mechanism
Faridoon et al.
Bioorganic & medicinal chemistry letters, 22(7), 2555-2559 (2012-03-01)
Purple acid phosphatases (PAPs) are binuclear metallohydrolases that have a multitude of biological functions and are found in fungi, bacteria, plants and animals. In mammals, PAP activity is linked with bone resorption and over-expression can lead to bone disorders such
A T Karagulle Kendi et al.
AJNR. American journal of neuroradiology, 29(7), 1276-1278 (2008-05-03)
Isolated bilateral striatal necrosis is an abnormality of the basal ganglia associated with acute dystonia in children. This report describes the development of dystonic movements in a 7-year-old male patient 2 weeks after streptococcal pharyngitis.
6-aminopenicillanic acid.
Rolinson GN.
Chemotherapy, 2(1), 52-59 (1961)
Chunqiu Tian et al.
Se pu = Chinese journal of chromatography, 29(11), 1128-1132 (2012-03-08)
A high performance capillary electrophoresis (HPCE) method was developed for the simultaneous determination of penicillin intermediate and penicillins in milk, including 6-amino-penicillanic acid (6-APA), penicillin G (PEN), ampicillin (AMP) and amoxicillin (AMO). The main parameters including the ion concentration and
J Swaminathan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 75(1), 183-190 (2009-11-10)
Quantum mechanical calculations of energies, geometries and vibrational wavenumbers of 6-aminopenicillanic acid were carried out by using ab initio HF and density functional theory (DFT/B3LYP) methods with 6-311G(d,p) basis set. The optimized geometrical parameters obtained by HF and DFT calculations
Chromium scavenging ability of silver nanoparticles in human erythrocytes, real samples and their effect on the catalase enzyme.
Rasheed W, et al.
New. J. Chem., 40(4), 3793-3802 (2016)
Edson Romano Nucci et al.
Bioprocess and biosystems engineering, 33(5), 557-564 (2009-09-04)
The complexity of biological processes often makes impractical the development of detailed, structured phenomenological models of the cultivation of microorganisms in bioreactors. In this context, data pre-treatment techniques are useful for bioprocess control and fault detection. Among them, principal component
An efficient nonenzymatic conversion of benzylpenicillin to 6-aminopenicillanic acid.
Weissenburger HWO and Van Der Hoeven MG.
Rec. Trav. Chim., 89(10), 1081-1084 (1970)
6-Aminopenicillanic acid revisited: A combined solid state NMR and in silico refinement
de Aguiar, Daniel Lima Marques, et al.
Chemical Physics Letters, 660, 214-220 (2016)
Lucie Vobecká et al.
New biotechnology, 47, 73-79 (2018-04-04)
Aqueous two-phase systems (ATPSs) were screened for the production of 6-aminopenicillanic acid (6-APA) catalyzed by penicillin acylase, followed by the extractive separation of 6-APA from the reaction mixture. The key point of this study was to find an ATPS exhibiting
Francesco Crea et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 47(4), 661-677 (2012-08-21)
The total solubility of three penicillin derivatives was determined, in pure water and NaCl aqueous solutions at different salt concentrations (from ∼0.15 to 1.0 mol L(-1) for ampicillin and amoxicillin, and from ∼0.05 to 2.0 mol L(-1) for (+)6-aminopenicillanic acid)
Shu-Guang Fang et al.
Preparative biochemistry & biotechnology, 40(1), 38-45 (2009-12-22)
Enzymatic hydrolysis of penicillin G for production of 6-amino-penicillanic-acid (6-APA) was achieved by using penicillin G acylase as catalyst in an aqueous-methylisobutyl ketone (MIBK) system. The optimization was carried out and it was found that the best conversion was improved
Alexandr Romanov et al.
Biotechnology and bioengineering, 118(2), 715-724 (2020-10-14)
Processes employed in separations of products of enzyme reactions are often driven by diffusion, and their efficiency can be limited. Here, we exploit the effect of a direct current (DC) electric field that intensifies mass transfer through a semipermeable membrane
Synthesis and antimicrobial activities of new higher amino acid Schiff base derivatives of 6-aminopenicillanic acid and 7-aminocephalosporanic acid.
Ozdemir O, et al.
Journal of Molecular Structure, 1106, 181-191 (2016)
Terence S Crofts et al.
Nature chemical biology, 14(6), 556-564 (2018-05-02)
The soil microbiome can produce, resist, or degrade antibiotics and even catabolize them. While resistance genes are widely distributed in the soil, there is a dearth of knowledge concerning antibiotic catabolism. Here we describe a pathway for penicillin catabolism in
G N Rolinson et al.
International journal of antimicrobial agents, 29(1), 3-8 (2006-12-02)
This year (2007) marks the 50th anniversary of [corrected] discovery of 6-aminopenicillanic acid (6-APA), the precursor of all semi-synthetic penicillins [corrected] This review, by a scientist who played a major part in the discovery and a physician who participated in
Acute generalized exanthematous pustulosis (AGEP) induced by terbinafine and two different antibiotics: four recurrences.
Nolwenn Coquart et al.
European journal of dermatology : EJD, 20(5), 638-639 (2010-07-16)
Pak-Ho Chan et al.
Journal of the American Chemical Society, 130(20), 6351-6361 (2008-04-24)
The fluorescein-labeled E166C mutant of the PenPC beta-lactamase (E166Cf) represents a successful model in the construction of "switch-on" fluorescent biosensors from nonallosteric proteins (Chan P.-H. et al.; J. Am Chem. Soc., 2004, 126, 4074). This paper focuses on the study
David A Harris et al.
Bioorganic & medicinal chemistry letters, 19(14), 3787-3790 (2009-05-12)
We report the first synthesis of a 5S penem, known to bind bacterial type I signal peptidase, from the commercially available and inexpensive 6-aminopenicillanic acid. We report the first in vivo activity of the compound and use structure-activity relationship studies
Joanna Skiba et al.
European journal of medicinal chemistry, 57, 234-239 (2012-10-18)
We report on the synthesis of ferrocenyl-ampicillin and ferrocenyl-6-aminopenicillinic acid bioconjugates. Title compounds were characterized by (1)H NMR, IR, MS and elemental analysis. These novel ferrocenyl-antibiotic conjugates were also investigated by cyclic voltammetry (CV). Ferrocenyl-ampicillin complexes revealed reversible uncomplicated oxidation
Junqi Zhao et al.
Bioresource technology, 102(2), 529-535 (2010-10-23)
In this study, macro-mesoporous silica spheres were prepared with a micro-device and used as the support for the immobilization of penicillin G acylase (PGA). To measure the enzymatic activity, the silica spheres with immobilized PGA were placed into a packed-bed
Rubina Arshad et al.
Pakistan journal of biological sciences : PJBS, 10(21), 3931-3935 (2008-12-19)
The present study was conducted to see the difference in production of 6-APA I) between wild strains of E. coli collected from local environment and their acridine orange (AO) induced mutants and ii) between mutants and E. coli strains (ATCC
Lisa M Bergeron et al.
Archives of biochemistry and biophysics, 481(1), 45-51 (2008-11-04)
The functionality of regions within the equatorial domain of Group II chaperonins is poorly understood. Previously we showed that a 70 amino acid sequence within this domain on the single-subunit recombinant thermosome from Methanocaldococcus jannaschii (rTHS) contains residues directly responsible
[Four recurrences of acute generalized exanthematous pustulosis (AGEP) with three different drugs in the same patient].
J-L Schmutz et al.
Annales de dermatologie et de venereologie, 138(5), 456-456 (2011-05-17)
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