Phosphorolytic activity of Escherichia coli glycyl-tRNA synthetase towards its cognate aminoacyl adenylate detected by 31P-NMR spectroscopy and thin-layer chromatography

1983 ◽  
Vol 136 (3) ◽  
pp. 469-479 ◽  
Author(s):  
Jens J. LED ◽  
Werner K. SWITON ◽  
Kaj F. JENSEN
Keyword(s):  
Escherichia Coli ◽  
Nmr Spectroscopy ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
31P Nmr ◽  
Trna Synthetase ◽  
31P Nmr Spectroscopy ◽  
Layer Chromatography

scholarly journals Detection and Investigation of Some Properties of the Regulators of Antibiotic Biosynthesis Produced by Streptomyces Strains S. sp. AN26 and S. sp. B35

2021 ◽  
Vol 83 (6) ◽  
pp. 49-54
Author(s):  
B.P. Matselyukh ◽  
Keyword(s):  
Molecular Structure ◽  
Nmr Spectroscopy ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Transcriptional Regulators ◽  
Signaling Molecules ◽  
Molecular Structures ◽  
Antibiotic Biosynthesis ◽  
Future Studies ◽  
Layer Chromatography

The aim of this work was the isolation, purification and some properties investigation of two regulators of antibiotic biosynthesis of streptomycetes. Methods includes extraction of regulators from agar cultures and their concentration by vacuum rotary evaporator, thin layer chromatography and spectrophotometry. Results. Two strains of streptomycetes AN26 and B35 isolated from soils of different regions of Ukraine produce the regulators restoring the landomycin E biosynthesis and sporulation in mutant strain Streptomyces globispoprus 1912-B2. Both regulators were purified by thin layer chromatography and have the same Rf 0.69. Absorption curves of regulators were established by means of spectrophotometry. Maxima of absorption of regulators were 232.5 nm. The next study of the isolated regulators by means of NMR will give the possibility to elucidate their molecular structures. Conclusions. It is shown that two strains of streptomycetes isolated from the soils of Askania Nova and Brovary produce transcriptional regulators such as signaling molecules, which, like A-factor, restore the biosynthesis of antibiotics landomycin E and streptomycin in test strains S. globisporus 1912-B2 and S. griseis 1439, respectively. In terms of absorption maxima, they are similar and differ from similar indicators of known regulators of streptomycetes. It is possible that these compounds belong to new, not yet described signaling molecules, and the answer to this question will give future studies of their molecular structure by NMR spectroscopy.

scholarly journals ANTIBACTERIAL ACTIVITY AND THIN LAYER CHROMATOGRAPHY PROFILE Muntingia Calabura LEAF EXTRACT AS A MATERIAL CANDIDATE HAND SANITIZER

2018 ◽  
Vol 11 (1) ◽  
pp. 43
Author(s):  
Santy Pristianingrum ◽  
Baiq Lely Zainiati ◽  
Iwan Doddy Dharmawibawa
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Preventive Action ◽  
Hand Sanitizer ◽  
Layer Chromatography ◽  
Active Substances ◽  
Muntingia Calabura

Abstract : the utilization of antibacterial active substances from several plants is increasingly not only as the ingredients of medicine, but its utilization is also utilized for an antibacterial ingredient for preventive action, one of them is hand sanitizer material. This research focused to find the antibacterial active substances alternative from Muntingia calabura leaves extract. The data were analyzed descriptively including the inhibitory of ethanol absolute extract and ethanol 95% of M. Calabura against isolate clinical bacteria by Kirby Bauer method and the type of coumpund that contains in M.calabura leaf by thin layer chromatography utilizingeluen n-hexan- Methanol. Etanol absolute extract M.calabura leaf showing the average inhibition zone against Pseudomonas aeruginosa 15.67 mm, Staphylococcus aureus 19.33 mm and Escherichia coli 13 mm. While, The etanol extract 95% showing higher inhibition Pseudomonas aeruginosa 19.67 mm, Staphylococcus aureus 19.33 mm and Escherichia coli 16.67 mm. This inhibitory zone was slightly lower than chlorhexidine gluconate with an average of 20-24 mm against the three bacteria that utilized in the test but belongs to the strongly sensitive category for natural materials according to Mukherjee (1988). From thin layer chromatography profile with eluen n-hexan: methanol found three compounds that were in the range of Rf value 0.4; 0.5 and 0.7. The Conclusion for this study is the bioactive material from etanol 95% extract M.calabura leaf can be optimized to the hand sanitizer active compound candidate.

scholarly journals Identification of a Novel 6′-N-Aminoglycoside Acetyltransferase, AAC(6′)-Iak, from a Multidrug-Resistant Clinical Isolate of Stenotrophomonas maltophilia

2014 ◽  
Vol 58 (10) ◽  
pp. 6324-6327 ◽  
Author(s):  
Tatsuya Tada ◽  
Tohru Miyoshi-Akiyama ◽  
Rajan K. Dahal ◽  
Shyam K. Mishra ◽  
Kayo Shimada ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Amino Acids ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Clinical Isolate ◽  
Stenotrophomonas Maltophilia ◽  
Multidrug Resistant ◽  
Content Type ◽  
Encoding Gene ◽  
Layer Chromatography

ABSTRACTStenotrophomonas maltophiliaIOMTU250 has a novel 6′-N-aminoglycoside acetyltransferase-encoding gene,aac(6′)-Iak. The encoded protein, AAC(6′)-Iak, consists of 153 amino acids and has 86.3% identity to AAC(6′)-Iz.Escherichia colitransformed with a plasmid containingaac(6′)-Iakexhibited decreased susceptibility to arbekacin, dibekacin, neomycin, netilmicin, sisomicin, and tobramycin. Thin-layer chromatography showed that AAC(6′)-Iak acetylated amikacin, arbekacin, dibekacin, isepamicin, kanamycin, neomycin, netilmicin, sisomicin, and tobramycin but not apramycin, gentamicin, or lividomycin.

scholarly journals Isolation and Structure Elucidation of Quercetin like Structure from Dalbergia sissoo (Fabaceae)

2020 ◽  
Vol 10 (3-s) ◽  
pp. 6-11
Author(s):  
Rohit Kumar KUMAR Bijauliya ◽  
Pushpendra Kannojia ◽  
Pankaj Mishra ◽  
Gaurav Kumar Pathak
Keyword(s):  
Nmr Spectroscopy ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Mass Spectroscopy ◽  
Column Chromatography ◽  
Structure Elucidation ◽  
High Performance ◽  
18Th Century ◽  
Dalbergia Sissoo ◽  
Layer Chromatography

The present study was conducted to isolate and classify Dalbergia sissoo (L.) bioactive compounds. The genus consists of 300 species in India, including 25 species. The generic name Dalbergia honors the 18th century Swedish brothers Nils and Carl Dalberg. Various phytoconstituents of alkaloids, glycosides, flavanoids, tannins, saponins, sterols and terpenoids were isolated and classified from different parts of the plant. Thin Layer Chromatography, High Performance Thin Layer Chromatography, and Column Chromatography were used to isolate spots from the fraction of the crude extract to elucidate the chemical structure of Dalbergia sissoo (L.) leaf extract. Potential spots have been exposed to techniques of FTIR, NMR and mass spectroscopy. Column chromatography was exposed to the raw extract, obtaining 125 fractions, conducting TLC. Among them was a single band in TLC, characterized by FTIR, NMR spectroscopy and mass spectroscopy, and the structure was known as Quercetin. The results of this study indicate the effective potential compound of the ethanolic fraction of Dalbergia sissoo (L.). Keywords: Dalbergia sissoo; Isolation & Structure Elucidation; FTIR; NMR spectroscopy; Mass spectroscopy.

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