Abstract:
:The effects of fluorescein isothiocyanate II (FITC) on the actions of insulin in rat adipocytes were studied. When adipocytes were incubated with FITC at pH 7.4 (2 mM agent, 8 min), the cells were completely deprived of their specific insulin-binding activity and rendered unresponsive to the hormone. The effect of FITC on the insulin-binding activity was milder at pH 9.0, and cAMP phosphodiesterase in cells exposed to FITC at pH 9.0 was maximally stimulated if the insulin concentration was increased to 100 nM. Under identical conditions, however, glucose transport activity was rendered not only less sensitive but also less responsive to the hormone. When FITC was added to cells after insulin at pH 9.0, the glucose transport activity that had been stimulated by the hormone was considerably reduced. This reduction was largely, but not entirely, prevented if the cells were deprived of ATP, suggesting that FITC (a) elicited the ATP-dependent reversal of the hormonal effect and, simultaneously, (b) mildly inhibited the transport activity per se. Western blot assay of GLUT-4 (a major isoform of glucose transporter in adipocytes) indicated that FITC (a) partially blocked insulin-dependent translocation of GLUT-4 from the intracellular site to the plasma membrane while it (b) induced a mild "insulin-like" effect. It is concluded that FITC at pH 9.0 (a) renders both glucose transport and phosphodiesterase activities less insulin sensitive presumably by modifying the cellular hormone receptor and (b) makes glucose transport activity less responsive to insulin presumably by (i) blocking hormone-dependent translocation of glucose transporter and (ii) mildly inhibiting intrinsic glucose transport activity.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Goto Y,Sumida Y,Flanagan JE,Robinson FW,Simpson IA,Cushman SW,Kono Tdoi
10.1016/0003-9861(92)90389-esubject
Has Abstractpub_date
1992-03-01 00:00:00pages
224-30issue
2eissn
0003-9861issn
1096-0384pii
0003-9861(92)90389-Ejournal_volume
293pub_type
杂志文章abstract::The murine macrophage (M phi) cell line, P388D1, was employed as a source of M phi phospholipases in order to characterize the enzymatic properties and subcellular localization of these enzymes because of their importance for prostaglandin biosynthesis. Phospholipase activity was assessed with dipalmitoylphosphatidylc...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90162-6
更新日期:1985-04-01 00:00:00
abstract::Previously human cytochrome P450 3A4 was efficiently and specifically photolabeled by the photoaffinity ligand lapachenole. One of the modification sites was identified as cysteine 98 in the B-C loop region of the protein [B. Wen, C.E. Doneanu, C.A. Gartner, A.G. Roberts, W.M. Atkins, S.D. Nelson, Biochemistry 44 (200...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2006.08.003
更新日期:2006-10-01 00:00:00
abstract::Ca2+-regulation of cardiac contractility is mediated through the troponin complex, which comprises three subunits: cTnC, cTnI, and cTnT. As intracellular [Ca2+] increases, cTnI reduces its binding interactions with actin to primarily interact with cTnC, thereby enabling contraction. A portion of this regulatory switch...
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doi:10.1016/j.abb.2017.09.017
更新日期:2017-11-15 00:00:00
abstract::Oxidative treatments of wood pulp lignin by one-electron-abstracting enzymatic or chemical systems result in modification phenomena which are not fully described in terms of those known from lignin model compound studies. The generation of, e.g., long-lived radicals necessitates nondestructive spectroscopic analysis o...
journal_title:Archives of biochemistry and biophysics
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doi:10.1016/s0003-9861(02)00225-4
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abstract::Rabbit and human brain tryptophan hydroxylase were cloned and expressed in Escherichia coli. Each of the respective cDNAs, including the complete coding sequence of tryptophan hydroxylase, was obtained by reverse transcription of rabbit or human brain mRNA and subcloned into the expression vector pET-3C. The expressed...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1523
更新日期:1994-12-01 00:00:00
abstract::The type I phosphatase associated with glycogen, PP1G, plays an important role in glycogen metabolism. PP1G is targeted to glycogen by the R(GL) subunit, which regulates the function of the enzyme. We report the cloning and characterization of the gene as well as the pattern of expression of the R(GL) subunit from mou...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2001.2283
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abstract::To investigate the effect of elevation of liver glycogen synthase (GYS2) activity on glucose and glycogen metabolism, we performed adenoviral overexpression of the mutant GYS2 with six serine-to-alanine substitutions in rat primary hepatocytes. Cell-free assays demonstrated that the serine-to-alanine substitutions cau...
journal_title:Archives of biochemistry and biophysics
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doi:10.1016/j.abb.2007.08.006
更新日期:2007-10-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
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doi:10.1016/0003-9861(84)90136-x
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(83)90519-2
更新日期:1983-04-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(89)90238-5
更新日期:1989-08-01 00:00:00
abstract::Previous study has shown that a peroxidase is present in the mature eggs of Aedes aegypti mosquitoes, and the enzyme is involved in the formation of a rigid and insoluble chorion by catalyzing chorion protein crosslinking through dityrosine formation. In this study, chorion peroxidase was solubilized from egg chorion ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1821
更新日期:2000-06-01 00:00:00
abstract::The ability for various ligands to modulate the binding of fructose 1,6-bisphosphate (Fru-1,6-P2) with purified rat liver pyruvate kinase was examined. Binding of Fru-1,6-P2 with pyruvate kinase exhibits positive cooperativity, with maximum binding of 4 mol Fru-1,6-P2 per enzyme tetramer. The Hill coefficient (nH), an...
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pub_type: 杂志文章
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更新日期:1984-07-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90627-7
更新日期:1985-01-01 00:00:00
abstract::A 1.1-kb Hp alpha I fragment of the Escherichia coli chromosome containing the gene for translation initiation factor 3 was employed as a probe in heterologous hybridization to chromosomal DNA from a variety of other procaryotes. Positive hybridization was observed to DNA derived from all gram-negative bacteria tested...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90276-5
更新日期:1984-11-15 00:00:00
abstract::The metabolic fates of NG,NG-and NG,N'G-dimethylarginines in rats were investigated isotopically and novel metabolites, alpha-keto-delta-(N,N-dimethylguanidino)-and alpha-keto-delta-(N,N'-dimethylguanidino)valeric acids and gamma-(N,N-dimethylguanidino)-and gamma-(N,N'-dimethylguanidino)butyric acids were identified. ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90060-9
更新日期:1987-02-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90749-m
更新日期:1992-05-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1138
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章,评审
doi:10.1006/abbi.2001.2313
更新日期:2001-05-01 00:00:00
abstract::Prothymosin alpha, a polypeptide of 109 to 111 amino acid residues, contains the entire thymosin alpha 1 sequence (residues 1-28) at its amino terminal. Human peripheral blood monocytes incubated with prothymosin alpha release thymosin alpha 1 in the culture supernatants. In addition total RNA is found to increase. Th...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90570-m
更新日期:1992-07-01 00:00:00
abstract::Activation of the NLRP3 inflammasome plays an important role in high glucose- induced endothelial dysfunction in patients with type 2 diabetes mellitus (T2DM). Dulaglutide, a newly developed glucagon-like peptide-1 receptor (GLP-1R) agonist, has been approved for the management of T2DM. In the current study, we aimed ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2019.07.008
更新日期:2019-08-15 00:00:00
abstract::We have developed a protocol to purify apo-ovine (o) prostaglandin endoperoxide H(2) synthase-1 (PGHS-1) to homogeneity from ram seminal vesicles. The resulting apo enzyme can then be reconstituted with Co(3+)-protoporphyrin IX instead of Fe(3+)-protoporphyrin IX to produce a native-like, but functionally inert, enzym...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1906
更新日期:2000-08-01 00:00:00
abstract::Regional hyperthermia has potential for human cancer treatment, particularly in combination with systemic chemotherapy or radiotherapy. The mechanisms involved in heat-induced cell killing are currently unknown. Hyperthermia may increase oxidative stress in cells, and thus, oxidative stress could have a role in the me...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.1087
更新日期:1999-03-15 00:00:00
abstract::Sulfotyrosyl peptides corresponding to the known high-affinity substrate phosphotyrosyl peptide sequences in casein and the autophosphorylation sites of insulin receptor and EGF receptor were investigated as inhibitors of protein tyrosine phosphatases PTP1B and CD45. These peptides inhibit both PTP1B and CD45 in the m...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0691
更新日期:1998-06-15 00:00:00
abstract:BACKGROUND:Atherosclerosis is a chronic inflammatory disease and represents the leading cause of morbidity and mortality throughout the world. Accumulating evidences have showed that Dihydrocapsaicin (DHC) has been found to exert multiple pharmacological and physiological effects. Nevertheless, the effects and possible...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2016.06.002
更新日期:2016-08-15 00:00:00
abstract::The carbohydrate binding stoichiometry of lima bean lectin component III was reexamined using equilibrium dialysis and quantitative affinity chromatography following limited chemical modification. Equilibrium dialysis employing methyl[2-14C]benzamido-2-deoxy-alpha-D-galactopyranoside as ligand demonstrated that the le...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90113-9
更新日期:1984-04-01 00:00:00
abstract::Procedures for the purification of bovine muscle carbonic anhydrase (isoenzyme III) are described. The purified enzyme has a molecular weight near 29,000 and contains one Zn2+ ion per molecule. The sedimentation coefficient, s(0)20,w, is 2.8 X 10(-13) s, the isoelectric pH is 8.5, and A280(0.1%) = 2.07 cm-1. The CO2 h...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90589-2
更新日期:1985-09-01 00:00:00
abstract::Archaeal replication machinery represents a core version of this in eukaryotes. The crenarchaeon Sulfolobus solfataricus has the potential to be a powerful model system to understand the central mechanism of eukaryotic DNA replication because it contains three active origins of replication and three eukaryote-like Orc...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:2008-03-15 00:00:00
abstract::We have studied the effectiveness of polyprenyl-P-mannose and polyprenol-P-glucose as donor substrates for the dolichyl-P-mannose:Man5(GlcNAc)2-PP-dolichol mannosyltransferase and the dolichyl-P-glucose:Man9(GlcNAc)2-PP-dolichol glucosyltransferase, respectively. The polyprenol moiety differs from dolichol only in the...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1994.1070
更新日期:1994-02-01 00:00:00