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Weigang Huang et al.
ACS chemical biology, 6(3), 223-228 (2010-12-17)
Phospholipase C isozymes (PLCs) catalyze the conversion of the membrane lipid phosphatidylinositol 4,5-bisphosphate (PIP(2)) into two second messengers, inositol 1,4,5-trisphosphate and diacylglycerol. This family of enzymes are key signaling proteins that regulate the physiological responses of many extracellular stimuli such
Jong Bae Seo et al.
PloS one, 10(12), e0144432-e0144432 (2015-12-15)
Hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) of the plasma membrane by phospholipase C (PLC) generates two critical second messengers, inositol-1,4,5-trisphosphate and diacylglycerol. For the enzymatic reaction, PIP2 binds to positively charged amino acids in the pleckstrin homology domain of PLC. Here
Nivedita Natarajan et al.
The Analyst, 140(10), 3445-3464 (2015-03-31)
The fresh water planarian species Schmidtea mediterranea is an emerging stem cell model because of its capability to regenerate a whole animal from a small piece of tissue. It is one of the best model systems to address the basic
Arianna Loregian et al.
Antimicrobial agents and chemotherapy, 54(5), 1930-1940 (2010-03-03)
WC5 is a 6-aminoquinolone that potently inhibits the replication of human cytomegalovirus (HCMV) but has no activity, or significantly less activity, against other herpesviruses. Here we investigated the nature of its specific anti-HCMV activity. Structure-activity relationship studies on a small
Sensitive fluorogenic substrates for the detection of trypsinlike proteases and pancreatic elastase.
P J Brynes et al.
Analytical biochemistry, 126(2), 447-455 (1982-11-01)
Xiulong Shen et al.
Chemical research in toxicology, 32(3), 348-361 (2019-03-01)
Enzymatic one-electron reduction of heterocyclic N-oxides can lead to the intracellular generation of reactive oxygen species via several different chemical pathways. These reactions may be relevant to hypoxia-selective anticancer drugs, antimicrobial agents, and unwanted toxicity of heterocylic nitrogen compounds.
Eyal Danieli et al.
Bioorganic & medicinal chemistry, 15(23), 7318-7324 (2007-09-18)
A novel molecular probe for enzymatic activity with a dual output detection-mode has been developed. The probe effectively detected the presence of the bacterial protease penicillin-G-amidase; a single cleavage by the enzyme initiated the fragmentation of a self immolative dendritic
Anuruddha Rajapakse et al.
The Journal of organic chemistry, 77(7), 3531-3537 (2012-03-16)
Regions of low oxygen concentration (hypoxia) occur in both normal human physiology and under pathophysiological conditions. Fluorescent probes for the direct imaging of cellular hypoxia could be useful tools that complement radiochemical imaging and immunohistochemical staining methods. In this work
A Rydlund et al.
Journal of chromatography. A, 738(1), 129-140 (1996-06-28)
Neutral and acidic monosaccharides, commonly present as structural units in wood-derived hemicelluloses, were derivatized by reductive amination using 6-aminoquinoline (6-AQ) and subsequently separated as their borate complexes by capillary zone electrophoresis. By using a quite concentrated (420 mmol 1(-1) alkaline
Masanori Tobe et al.
Bioorganic & medicinal chemistry, 11(18), 3869-3878 (2003-08-21)
In this study, we have investigated the roles of substituents on the terminal phenyl ring at the C(4)-position of the quinazoline core to complete the structure-activity relationships (SARs) of our NF-kappa B activation inhibitors. Among them, compound 12j afforded highly
J H Yu et al.
Journal of chromatography. B, Biomedical applications, 658(2), 249-260 (1994-08-19)
A new polymeric reagent containing the 6-aminoquinoline (6-AQ) tag was developed and applied for the off-line derivatization of amines and amino acids in high-performance liquid chromatography (HPLC). The synthesis and characterization of this polymeric reagent are described. An authentic external
6-aminoquinoline as a fluorogenic leaving group in peptide cleavage reactions: a new fluorogenic substrate for chymotrypsin.
P J Brynes et al.
Analytical biochemistry, 116(2), 408-413 (1981-09-15)
G Viola et al.
Toxicology in vitro : an international journal published in association with BIBRA, 18(5), 581-592 (2004-07-15)
Three selected aminoquinolones endowed with a potent antibacterial (compounds 1 and 2) and antiviral activity (compound 3) have been evaluated for their phototoxic properties in vitro. Photostability studies of these compounds indicate that compound 3 is photostable whereas compound 1
Makoto Yasuda et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 934, 41-45 (2013-07-31)
A simple and rapid method for the simultaneous determination of serum nicotine and cotinine using high-performance liquid chromatography (HPLC)-fluorometric detection with a postcolumn ultraviolet-photoirradiation system was developed. Analytes were extracted from alkalinized human serum via liquid-liquid extraction using chloroform. The
W Nashabeh et al.
Journal of chromatography, 600(2), 279-287 (1992-05-29)
The electrophoretic behavior of derivatized linear and branched oligosaccharides from various sources was examined in capillary zone electrophoresis with polyether-coated fused-silica capillaries. Two UV-absorbing (also fluorescent) derivatizing agents (2-aminopyridine and 6-aminoquinoline) were utilized for the electrophoresis and sensitive detection of
S A Cohen et al.
Analytical biochemistry, 211(2), 279-287 (1993-06-01)
A highly reactive amine derivatizing reagent, 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate, has been synthesized. In a rapid, one-step procedure, the compound reacts with amino acids to form stable unsymmetric urea derivatives which are readily amenable to analysis by reversed phase HPLC. Studies on
Pierre-Jean Aragon et al.
Chemical & pharmaceutical bulletin, 52(6), 659-663 (2004-06-10)
Indoloquinoline alkaloid cryptolepine and pyridocarbazole alkaloid ellipticine are of great interest because in vitro and in vivo studies revealed their good cytotoxic properties. In order to obtain some biologically active analogs of these compounds, we developped a synthesis based on
Bryan P Ruddy et al.
Journal of controlled release : official journal of the Controlled Release Society, 306, 83-88 (2019-06-01)
Subcutaneous delivery of nicotine was performed using a novel electrically-operated needle-free jet injector, and compared to hypodermic needle delivery in a porcine model. Nicotine was delivered as a single, one-milligram dose into the abdominal skin, formulated as a 50 microliter
Alberto Diez-Torrubia et al.
Journal of medicinal chemistry, 53(2), 559-572 (2009-12-17)
Here we explore the applicability of the dipeptidyl peptidase IV (DPPIV/CD26) based prodrug approach to a variety of amine-containing drugs. Efficient procedures have been developed for the synthesis of dipeptide and tetrapeptide amide prodrugs including N-acylation protocols of the exocyclic
Weston B Struwe et al.
Biological chemistry, 393(8), 757-765 (2012-09-05)
In this study, we investigated the potential of four different aminoquinoline (AQ) compounds as fluorescent labels for glycan analysis using hydrophilic interaction liquid chromatography (HILIC) and fluorescence detection (FLD). We confirmed the optimal excitation and emission wavelengths of 3-AQ and
Marco Pieroni et al.
Journal of medicinal chemistry, 53(11), 4466-4480 (2010-05-08)
The thiopyranopyridine moiety was synthesized as a new heterocyclic base to be inserted at the C-7 position of selected quinolone nuclei followed by a determination of antibacterial activity against strains of Staphylococcus aureus. Selected thiopyranopyridinylquinolones showed significant antimicrobial activity, including
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