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Artículos de revistas sobre el tema "Penicillina G Amidas"

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Publicado: 11 de marzo de 2023

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1

Wang, Jianguo, Qingqing Chen, Jie Wu, Wenping Zhu, Yongquan Wu, Xiaolin Fan, Guanxin Zhang, Yibao Li y Guoyu Jiang. "A highly selective and light-up red emissive fluorescent probe for imaging of penicillin G amidase inBacillus cereus". New Journal of Chemistry 43, n.º 16 (2019): 6429–34. http://dx.doi.org/10.1039/c9nj00890j.

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2

EVO, M., G. DEGRASSI, N. SKOKO, V. VENTURI y G. LJUBIJANKI. "Production of glycosylated thermostable penicillin G amidase in". FEMS Yeast Research 1, n.º 4 (enero de 2002): 271–77. http://dx.doi.org/10.1016/s1567-1356(01)00040-x.

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3

Brand, U., T. Scheper y K. Schügerl. "Penicillin G sensor based on penicillin amidase coupled to a field effect transistor". Analytica Chimica Acta 226, n.º 1 (enero de 1989): 87–97. http://dx.doi.org/10.1016/s0003-2670(00)80906-x.

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4

Ljubijankić, Goran, Miroslav Konstantinović y Vladimir Glišin. "The primary structure of Providencia rettgeri penicillin G amidase gene and its relationship to other gram negative amidases". DNA Sequence 3, n.º 3 (enero de 1992): 195–200. http://dx.doi.org/10.3109/10425179209034017.

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5

Sánchez, Juan, José Luis Marrugo Negrete y Iván Urango. "Biosorción simultanea de plomo y cadmio en solución acuosa por biomasa de hongos penicillium sp." Temas Agrarios 19, n.º 1 (19 de agosto de 2016): 63–72. http://dx.doi.org/10.21897/rta.v19i1.725.

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La descarga de metales pesados en el ambiente genera impactos significativos en la salud humana y ciclos biológicos. Algunos microorganismos son conocidos por su alta capacidad de adsorción de metales, entre estos los hongos. El objetivo del presente trabajo fue evaluar la capacidad de remoción de Pb (II) y Cd (II) en soluciones acuosas con hongos Penicillium sp., aislando la cepa fúngica del suelo de la mina el Alacrán (CórdobaColombia) y determinando la influencia en las variables pH, concentración inicial de metales y temperatura, analizando las isotermas de Freundlich y Langmüir, Verificando los grupos funcionales que intervienen en la adsorción por análisis infrarrojo (IR), con el fin potencializar su uso en el saneamiento de aguas residuales. Los análisis se realizaron empleando los equipos Thermo scientific de absorción atómica modelo ICE 3000 serie y espectrofotómetro FT-IR Nicolet Is5 realizando control de calidad con material de referencia de Pb y Cd SRM-1643e. A 51,5 mg L^-1 de Pb y Cd se pudo encontrar los mayores porcentajes de remoción para 0,5 g de biomasa. Las máximas adsorciones se dieron a pH ácido (4-5) y 60 °C, logrando remociones del 92,4% para Pb y 80% para Cd. Las isotermas se ajustan mejor al modelo Langmuir. El análisis IR muestra grupos -OH, -NH, C-N, C-H, N-H, C=O, amida I y amidas II y polisacáridos, atribuyendo esto la atracción en los metales y la biomasa fúngica.
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6

Piotraschke, Elke, Allan Nurk, Boris Galunsky y Volker Kasche. "Genetic construction of catalytically active cross-species heterodimer penicillin G amidase". Biotechnology Letters 16, n.º 2 (febrero de 1994): 119–24. http://dx.doi.org/10.1007/bf01021656.

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7

Braiuca, Paolo, Luca Boscarol, Cynthia Ebert, Paolo Linda y Lucia Gardossi. "3D-QSAR Applied to the Quantitative Prediction of Penicillin G Amidase Selectivity". Advanced Synthesis & Catalysis 348, n.º 6 (abril de 2006): 773–80. http://dx.doi.org/10.1002/adsc.200505346.

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8

Gou, Bin-Quan, Ju Chu, Si-Liang Zhang, Yong-Hong Wang, Ying-Ping Zhuang, Hua Huang, Zhen Li y Zhong-Yi Yuan. "Production of penicillin G amidase from Alcaligenes faecalis in a recombinant Escherichia coli". Journal of the Taiwan Institute of Chemical Engineers 40, n.º 2 (marzo de 2009): 233–36. http://dx.doi.org/10.1016/j.jtice.2008.09.004.

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9

Quratulain, S., B. Nasira y M. A. Kashmiri. "Development and characterization of a potent producer of penicillin G amidase by mutagenization". World Journal of Microbiology and Biotechnology 22, n.º 3 (25 de noviembre de 2005): 213–18. http://dx.doi.org/10.1007/s11274-005-9023-2.

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10

Lee, C. K. y S. K. Chang. "Plate and frame filter as a recirculated batch reactor for penicillin-G amidase". Bioprocess Engineering 16, n.º 2 (1997): 87. http://dx.doi.org/10.1007/s004490050293.

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11

Basso, Alessandra, Sara Cantone, Paolo Linda y Cynthia Ebert. "Stability and activity of immobilised penicillin G amidase in ionic liquids at controlled aw". Green Chemistry 7, n.º 9 (2005): 671. http://dx.doi.org/10.1039/b506230f.

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12

Robas, Nathalie y Christiane Branlant. "The expression of the penicillin G amidase gene ofEscherichia coli by primer extension analysis". Current Microbiology 29, n.º 5 (noviembre de 1994): 263–68. http://dx.doi.org/10.1007/bf01577438.

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13

Nupur, Neh, Bentham Science Publisher Ashish y Mira Debnath (Das). "Preparation and Biochemical Property of Penicillin G Amidase-Loaded Alginate and Alginate/Chitosan Hydrogel Beads". Recent Patents on Biotechnology 10, n.º 1 (29 de septiembre de 2016): 121–32. http://dx.doi.org/10.2174/1872208310666160805112515.

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14

Basso, Alessandra, Beatrice A. Maltman, Sabine L. Flitsch, Graham Margetts, Ian Brazendale, Cynthia Ebert, Paolo Linda, Silvia Verdelli y Lucia Gardossi. "Optimized polymer–enzyme electrostatic interactions significantly improve penicillin G amidase efficiency in charged PEGA polymers". Tetrahedron 61, n.º 4 (enero de 2005): 971–76. http://dx.doi.org/10.1016/j.tet.2004.11.015.

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15

Mönster, Andrea, Louis Villain, Thomas Scheper y Sascha Beutel. "One-step-purification of penicillin G amidase from cell lysate using ion-exchange membrane adsorbers". Journal of Membrane Science 444 (octubre de 2013): 359–64. http://dx.doi.org/10.1016/j.memsci.2013.05.054.

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16

Scherrer, S., N. Robas, H. Zouheiry, G. Branlant y C. Branlant. "Periplasmic aggregation limits the proteolytic maturation of the Escherichia coli Penicillin G amidase precursor polypeptide". Applied Microbiology and Biotechnology 42, n.º 1 (1 de noviembre de 1994): 85–91. http://dx.doi.org/10.1007/s002530050221.

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17

Scherrer, S., N. Robas, H. Zouheiry, G. Branlant y C. Branlant. "Periplasmic aggregation limits the proteolytic maturation of the Escherichia coli Penicillin G amidase precursor polypeptide". Applied Microbiology and Biotechnology 42, n.º 1 (octubre de 1994): 85–91. http://dx.doi.org/10.1007/bf00170229.

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18

Vrudhula, Vivekananda M., Peter D. Senter, Keith J. Fischer y Philip M. Wallace. "Prodrugs of doxorubicin and melphalan and their activation by a monoclonal antibody-penicillin-G amidase conjugate". Journal of Medicinal Chemistry 36, n.º 7 (abril de 1993): 919–23. http://dx.doi.org/10.1021/jm00059a018.

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19

Zmijewski, Milton J., Barbara S. Briggs, Allen R. Thompson y Ian G. Wright. "Enantioselective acylation of a beta-lactam intermediate in the synthesis of loracarbef using penicillin G amidase". Tetrahedron Letters 32, n.º 13 (marzo de 1991): 1621–22. http://dx.doi.org/10.1016/s0040-4039(00)74287-0.

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20

Stankovic, Nada, Branka Vasiljevic y Goran Ljubijankic. "Effect of the kanamycin resistance marker on stability of 2μ-based expression plasmids". Archives of Biological Sciences 59, n.º 1 (2007): 1P—12P. http://dx.doi.org/10.2298/abs0701001s.

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In this paper we describe the effect of the kanamycin resistance gene (Kmr) on 2?m-based plasmid maintenance in Saccharomyces cerevisiae. The influence of this marker gene on the loss of the stable model-vectors proved to be constant, as well as independent of carbon source and culture growth rates. In strains for GALUAS - driven heterologous protein production introduction of Kmr resulted in curing of the yeast episomal plasmid (YEp) from the population in a small number of generations. Application of selective pressure on the strain producing recombinant penicillin G amidase (rPGA) did not provide the expected increase of protein yield. The influence of genetic elements for heterologous protein production on vector stability was examined, and the most destabilizing factors prove to be the presence and expression of the foreign gene.
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21

Galaction, Anca-Irina, Ramona Mihaela Matran, Marius Turnea, Alexandra Cristina Blaga y Dan Caşcaval. "ENGINEERING ASPECTS OF PENICILLIN G TRANSFER AND CONVERSION TO 6-AMINOPENICILLANIC ACID IN A BIOREACTOR WITH A MOBILE BED OF IMMOBILIZED PENICILLIN AMIDASE". Chemical Engineering Communications 201, n.º 12 (17 de junio de 2014): 1568–81. http://dx.doi.org/10.1080/00986445.2013.819801.

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22

Begley, Máire, Roy D. Sleator, Cormac G. M. Gahan y Colin Hill. "Contribution of Three Bile-Associated Loci, bsh, pva, and btlB, to Gastrointestinal Persistence and Bile Tolerance of Listeria monocytogenes". Infection and Immunity 73, n.º 2 (febrero de 2005): 894–904. http://dx.doi.org/10.1128/iai.73.2.894-904.2005.

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ABSTRACT Listeria monocytogenes must resist the deleterious actions of bile in order to infect and subsequently colonize the human gastrointestinal tract. The molecular mechanisms used by the bacterium to resist bile and the influence of bile on pathogenesis are as yet largely unexplored. This study describes the analysis of three genes—bsh, pva, and btlB—previously annotated as bile-associated loci in the sequenced L. monocytogenes EGDe genome (lmo2067, lmo0446, and lmo0754, respectively). Analysis of deletion mutants revealed a role for all three genes in resisting the acute toxicity of bile and bile salts, particularly glycoconjugated bile salts at low pH. Mutants were unaffected in the other stress responses examined (acid, salt, and detergents). Bile hydrolysis assays demonstrate that L. monocytogenes possesses only one bile salt hydrolase gene, namely, bsh. Transcriptional analyses and activity assays revealed that, although it is regulated by both PrfA and σB, the latter appears to play the greater role in modulating bsh expression. In addition to being incapable of bile hydrolysis, a sigB mutant was shown to be exquisitely sensitive to bile salts. Furthermore, increased expression of sigB was detected under anaerobic conditions and during murine infection. A gene previously annotated as a possible penicillin V amidase (pva) or bile salt hydrolase was shown to be required for resistance to penicillin V but not penicillin G but did not demonstrate a role in bile hydrolysis. Finally, animal (murine) studies revealed an important role for both bsh and btlB in the intestinal persistence of L. monocytogenes.
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23

De Martin, Luigi, Cynthia Ebert, Gianpiero Garau, Lucia Gardossi y Paolo Linda. "Penicillin G amidase in low-water media: immobilisation and control of water activity by means of celite rods". Journal of Molecular Catalysis B: Enzymatic 6, n.º 4 (abril de 1999): 437–45. http://dx.doi.org/10.1016/s1381-1177(99)00011-9.

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24

Sitnikov, Nikolay S., Yingchun Li, Danfeng Zhang, Benito Yard y Hans-Günther Schmalz. "Design, Synthese und funktionelle Evaluierung von CO-freisetzenden Molekülen, die durch Penicillin-G-Amidase als Modellprotease aktiviert werden". Angewandte Chemie 127, n.º 42 (2 de junio de 2015): 12489–93. http://dx.doi.org/10.1002/ange.201502445.

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25

Cardoso, J. P. "Purification of Penicillin G Amidase using Quaternary Ammonium Salts and effect on the activity of the immobilised enzymes". Bioprocess Engineering 16, n.º 4 (1997): 209. http://dx.doi.org/10.1007/s004490050310.

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26

Sitnikov, Nikolay S., Yingchun Li, Danfeng Zhang, Benito Yard y Hans-Günther Schmalz. "Design, Synthesis, and Functional Evaluation of CO-Releasing Molecules Triggered by Penicillin G Amidase as a Model Protease". Angewandte Chemie International Edition 54, n.º 42 (2 de junio de 2015): 12314–18. http://dx.doi.org/10.1002/anie.201502445.

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27

Cascaval, Dan, Ramona Mihaela Matran, Anca-Irina Galaction, Alexandra Cristina Blaga y Marius Turnea. "GREEN TECHNOLOGY FOR 6-AMINOPENICILLANIC ACID PRODUCTION - STUDY OF PENICILLIN G HYDROLYSIS IN A BIOREACTOR WITH MOBILE BED OF IMMOBILIZED PENICILLIN AMIDASE UNDER SUBSTRATE INHIBITION". Environmental Engineering and Management Journal 12, n.º 11 (2013): 2261–66. http://dx.doi.org/10.30638/eemj.2013.278.

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28

Galunsky, Boris, Karsten Lummer y Volker Kasche. "Comparative Study of Substrate- and Stereospecificity of Penicillin G Amidases from Different Sources and Hybrid Isoenzymes". Monatshefte fuer Chemie/Chemical Monthly 131, n.º 6 (15 de junio de 2000): 623–32. http://dx.doi.org/10.1007/s007060070090.

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29

Caşcaval, Dan, Marius Turnea, Anca-Irina Galaction y Alexandra Cristina Blaga. "6-Aminopenicillanic acid production in stationary basket bioreactor with packed bed of immobilized penicillin amidase—Penicillin G mass transfer and consumption rate under internal diffusion limitation". Biochemical Engineering Journal 69 (diciembre de 2012): 113–22. http://dx.doi.org/10.1016/j.bej.2012.09.004.

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30

Basso, Alessandra, Cynthia Ebert, Lucia Gardossi, Paolo Linda, Thao Tran Phuong, Mingzhao Zhu y Ludger Wessjohann. "Penicillin G Amidase-Catalysed Hydrolysis of Phenylacetic Hydrazides on a Solid Phase: A New Route to Enzyme-Cleavable Linkers". Advanced Synthesis & Catalysis 347, n.º 7-8 (junio de 2005): 963–66. http://dx.doi.org/10.1002/adsc.200505038.

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31

Basso, Alessandra, Luigi De Martin, Cynthia Ebert, Lucia Gardossi y Paolo Linda. "Controlling the hydration of covalently immobilised penicillin G amidase in low-water medium: properties and use of Celite R-640". Journal of Molecular Catalysis B: Enzymatic 8, n.º 4-6 (febrero de 2000): 245–53. http://dx.doi.org/10.1016/s1381-1177(99)00075-2.

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32

Carboni, Chiara, Peter J. L. M. Quaedflieg, Quirinus B. Broxterman, Paolo Linda y Lucia Gardossi. "Quantitative enzymatic protection of d-amino acid methyl esters by exploiting ‘relaxed’ enantioselectivity of penicillin-G amidase in organic solvent". Tetrahedron Letters 45, n.º 52 (diciembre de 2004): 9649–52. http://dx.doi.org/10.1016/j.tetlet.2004.10.153.

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33

Ni, Zhong, Huayou Chen, Xianfu Lin y Rongzhong Jin. "Insight into molecular mechanism underlying the transesterification catalysed by penicillin G amidase (PGA) using a combination protocol of experimental assay and theoretical analysis". Molecular Simulation 40, n.º 14 (13 de enero de 2014): 1125–30. http://dx.doi.org/10.1080/08927022.2013.850500.

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34

Sambyal, Krishika y Rahul Vikram Singh. "Exploitation of E. coli for the production of penicillin G amidase: a tool for the synthesis of semisynthetic β-lactam antibiotics". Journal of Genetic Engineering and Biotechnology 19, n.º 1 (15 de octubre de 2021). http://dx.doi.org/10.1186/s43141-021-00263-7.

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Abstract Background Penicillin G amidase/acylases from microbial sources is a unique enzyme that belongs to the N-terminal nucleophilic hydrolase structural superfamily. It catalyzes the selective hydrolysis of side chain amide/acyl bond of penicillins and cephalosporins whereas the labile amide/acyl bond in the β-lactam ring remains intact. Main body of abstract This review summarizes the production aspects of PGA from various microbial sources at optimized conditions. The minimal yield from wild strains has been extensively improved using varying strain improvement techniques like recombination and mutagenesis; further applied for the subsequent synthesis of 6-aminopenicillanic acid, which is an intermediate molecule for synthesis of a wide range of novel β-lactam antibiotics. Immobilization of PGA has also been attempted to enhance the durability of enzyme for the industrial purposes. Short conclusion The present review provides an emphasis on exploitation of E. coli to enhance the microbial production of PGA. The latest achievements in the production of recombinant enzymes have also been discussed. Besides E. coli, other potent microbial strains with PGA activity must be explored to enhance the yields. Graphical abstract
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35

Zhao, Chao, Wanlu Sun, Baojin Tan, Dan Su y Yi Liu. "Penicillin G amidase-activatable near-infrared imaging guiding PDT of bacterial infections". Sensors and Actuators B: Chemical, febrero de 2023, 133502. http://dx.doi.org/10.1016/j.snb.2023.133502.

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