Abstract：
:It has been suggested that the binding of iron(III) by phosvitin involves the phosphoric radicals of phosphorylserine residues, many of which are arranged in rows of several consecutive phosphoamino acids. In this paper we present evident that, unlike free phosphorylserine which does not interact with Fe(III), polyphosphorylserine blocks--(Ser-P)n, with n greater than or equal to 4 -- bind Fe(III) like phosvitin, though less actively, to give complexes stable at very acidic pHs. The binding of iron does not cause any polymerization of the phosphopeptides, and the (Ser-P)n-Fe(III) complexes display an Fe/P ratio significantly lower than 0.5, found in Fe-saturated phosvitin. These findings indicate that polyphosphorylserine blocks play an important role in the binding of iron by phosvitin, and that in the intact protein their binding capacity is optimized by the conformation of the polypeptide chain.
journal_name
Chem Biol Interactjournal_title
Chemico-biological interactionsauthors
Donella A,Pinna LA,Moret Vdoi
10.1016/0009-2797(76)90161-7subject
Has Abstractpub_date
1976-10-02 00:00:00pages
165-71issue
2eissn
0009-2797issn
1872-7786pii
0009-2797(76)90161-7journal_volume
15pub_type
杂志文章abstract：:Dopa was oxidized by Mn(3+)-pyrophosphate complex to the corresponding o-quinone, accompanied by the cyclization of the amino chain to form cyclized dopa ortho-quinone (cDoQ) with absorption maxima at wavelengths of 305 and 475 nm. The cyclization was found to proceed in a single step from DoQ to cDoQ without formatio...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(94)90090-6
更新日期：1994-11-01 00:00:00
abstract：:Caffeine was found to potentiate the cytotoxic effect of misonidazole (1-(2-nitroimidazol-1-yl)-3-methoxy-2-propanol) towards mammalian cells in vitro. This enhancement of toxicity is shown to occur under both aerobic and hypoxic conditions. Split dose experiments indicate that the general shape of the hypoxic surviva...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(82)90089-8
更新日期：1982-08-01 00:00:00
abstract：:This study was planned to determine the protective role of zinc, if any, in attenuating the toxicity induced by nickel sulfate in rat liver. Female Sprague Dawley (SD) rats received either nickel alone in the dose of 800 mg/l in drinking water, zinc alone in the dose of 227 mg/l in drinking water, and nickel plus zinc...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2004.09.012
更新日期：2004-11-20 00:00:00
abstract：:Keloid is an overgrowth of scar tissue that develops around a wound. The mechanisms of keloid formation and development still remain unknown, and no effective treatment is available. Searching for active natural resources may develop better prevention and treatment approaches for keloids. Aspidin PB is a natural resou...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2015.06.005
更新日期：2015-08-05 00:00:00
abstract：:Nasal metabolism of inhaled material may influence its biological fate and toxicity. The purpose of this study was to investigate, in a noninvasive and qualitative manner, the in vivo nasal metabolic activity towards 1-(3,4-methylenedioxyphenyl)propane (dihydrosafrole). Dihydrosafrole was the compound of choice as a r...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(87)90056-1
更新日期：1987-01-01 00:00:00
abstract：:Reactive metabolites formed from benzene include benzene oxide, trans,trans muconaldehyde, quinones, thiol adducts, phenolic metabolites and oxygen radicals. Susceptibility to the toxic effects of benzene has been suggested to occur partly because of polymorphisms in enzymes involved in benzene metabolism which includ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2009.11.017
更新日期：2010-03-19 00:00:00
abstract：:Cloning of the androgen and estrogen sulfotransferases has allowed studies on their spatiotemporal regulation and physiological function. These two enzymes appear to be involved in regulating target cell sensitivity for the androgenic and estrogenic steroids. Recombinant androgen sulfotransferase produced in insect Sf...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/0009-2797(94)90069-8
更新日期：1994-06-01 00:00:00
abstract：:Chemopreventive potential of Acacia nilotica bark extract (ANBE) against single intraperitoneal injection of N-nitrosodiethylamine (NDEA, 200mg/kg) followed by weekly subcutaneous injections of carbon tetrachloride (CCl(4), 3 ml/kg) for 6 weeks induced hepatocellular carcinoma (HCC) in rats was studied. At 45 day afte...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2009.05.007
更新日期：2009-09-14 00:00:00
abstract：:The stemness of stem cells is negatively affected by ultraviolet A (UVA) irradiation. This study was performed to examine the effects of arctigenin on UVA-irradiation-induced damage to the stemness of human mesenchymal stem cells (hMSCs) derived from adipose tissue. The mechanisms of action of arctigenin were also inv...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2018.01.005
更新日期：2018-02-25 00:00:00
abstract：:The present study shows the existence of both Ca2+-dependent and EDTA-resistant hydrolysing activities against HDCP and paraoxon in the particulate and soluble fractions of hen, rat and rabbit liver. HDCP was more extensively hydrolysed than paraoxon in both subcellular fractions and each of three individuals of the t...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(99)00035-6
更新日期：1999-05-14 00:00:00
abstract：:Artesunate is a kind of derivative of artemisinin, which possesses potent anti-cancer effect in addition to its anti-malarial property. And autophagy was a highly conserved process, exerting a double-edged effect in cancer cell survival. Besides, apoptosis is a programmed cell death program, crucial to cell homeostasi...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2020.109273
更新日期：2020-11-01 00:00:00
abstract：:P-glycoprotein (P-gp) is a membranous ATPase responsible for the multidrug resistance phenotype. The effect on P-gp-mediated transport of anthracyclines of cell irradiation in the presence of 2,2-diphenyl-5-[N-1-(o-azidophenyl)ethylamino]valeronitrile (VP*), a photoactivable analogue of verapamil was studied in viable...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/s0009-2797(99)00095-2
更新日期：1999-07-01 00:00:00
abstract：:The general features of the reduction of nitroblue tetrazolium chloride (NBT) by NADH and phenazine methosulphate (PMS) have been studied under aerobic and anaerobic conditions. Under aerobic condition the reduction appears to be mediated through the intermediate formation of the superoxide anion radical O2-.; this re...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(78)90090-x
更新日期：1978-12-01 00:00:00
abstract：:Phagocytic cells, especially neutrophils (PMNs) are specialized in the production of reactive oxygen species (ROS) to kill pathogenic agents, but an excessive ROS production is associated with tissue damages and inflammatory diseases. Phagocytes are thus prime therapeutic targets to control inflammatory events associa...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2012.12.010
更新日期：2013-01-25 00:00:00
abstract：:Diabetes mellitus causes derangement of carbohydrate, protein and lipid metabolism which eventually leads to a number of secondary complications. Terminalia bellerica is widely used in Indian medicine to treat various diseases including diabetes. The present study was carried out to isolate and identify the putative a...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2010.11.005
更新日期：2011-01-15 00:00:00
abstract：:The effects of 3-methylcholanthrene (MCA), 5,6-benzoflavone (betaNF), 7,8-benzoflavone (alphaNF) and pregnenolone 16alpha-carbonitrile (PCN) upon aryl hydrocarbon hydroxylase (AHH) were determined in primary mammary gland epithelial cell cultures prepared from the C3Hf-/Ki mouse. MCA elevated AHH activity by 3--4 fold...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(77)90067-9
更新日期：1977-04-01 00:00:00
abstract：:It has been postulated that reversible, high-affinity binding of 3-methylcholanthrene(MC)-type inducers to a receptor protein (the Ah receptor) in hepatic cytosol is essential for induction of aryl hydrocarbon hydroxylase (AHH) enzymic activity. To test this postulate, the binding affinities of 16 highly-purified, syn...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(82)90045-x
更新日期：1982-04-01 00:00:00
abstract：:The present study was an attempt to investigate the hepatoprotective and antioxidative property of Phyllanthus amarus (P. amarus) extract and phyllanthin. Phyllanthin, one of the active lignin present in this plant species was isolated from the aerial parts, by silica gel column chromatography employing gradient eluti...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2009.06.014
更新日期：2009-10-30 00:00:00
abstract：:A detailed subfractionation of the non-pregnant porcine corpus luteum (CL) was performed employing differential centrifugation. Marker enzyme assays (i.e., lactate dehydrogenase for the cytosol, NADPH-cytochrome P450 reductase for the endoplasmatic reticulum, catalase (CAT) for peroxisomes, glutamate dehydrogenase for...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2003.10.002
更新日期：2004-01-15 00:00:00
abstract：:Cataract is the most frequent cause of blindness worldwide and is treated by surgical removal of the opaque lens to restore the light path to the retina. While cataract surgery is a safe procedure, some patients develop a complication of the surgery involving opacification and wrinkling of the posterior lens capsule. ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2017.01.017
更新日期：2017-10-01 00:00:00
abstract：:Evidence for the reversible binding of paraquat to calf thymus DNA has been obtained using equilibrium dialysis and thermal melting point determinations. The data indicated the presence of at least two populations of binding site with affinity constants of 6.2 X 10(4) and 7.1 X 10(3) M-1, respectively. The binding cap...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(87)90035-4
更新日期：1987-02-01 00:00:00
abstract：:Wild-type human butyrylcholinesterase (BuChE) has proven to be an efficient bioscavenger for protection against nerve agent toxicity. Human acetylcholinesterase (AChE) has a similar potential. A limitation to their usefulness is that both cholinesterases (ChEs) react stoichiometrically with organophosphosphorus (OP) e...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2008.04.005
更新日期：2008-09-25 00:00:00
abstract：:Gentamicin-induced nephrotoxicity has been well documented, although the causing mechanisms and preventative measures need further investigation. The current study aimed to explore the potential protective impacts of celecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor, on gentamicin-induced nephrotoxicity and th...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2019.108863
更新日期：2020-01-05 00:00:00
abstract：:The distribution of 203Hg after inhalation of radioactive metallic mercury (4.3 mumol 203Hg0/kg body wt. for 1 h) was studied in saline (control) and selenite (10 mumol/kg body wt. intraperitoneally, i.p.) pretreated male C57BL mice by means of whole-body autoradiography and scintillation counting. Selenite pretreatme...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(83)90014-5
更新日期：1983-09-15 00:00:00
abstract：:Propolis is a resinous substance produced by honeybees (Apis mellifera) from the selective collection of exudates and bud secretions from several plants. In previous works, we reported the antiproliferative activity of Sonoran propolis (SP) on cancer cells; in addition we suggested the induction of apoptosis after tre...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2015.09.013
更新日期：2015-12-05 00:00:00
abstract：:Glucuronide conjugates represent one of the major types of naturally occurring phase 2 metabolites of xenobiotics and endobiotics. The process underlying their formation, glucuronidation, is normally considered detoxifying, because glucuronides usually possess less intrinsic biological or chemical activity than their ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/s0009-2797(00)00198-8
更新日期：2000-12-01 00:00:00
abstract：:The in vitro effect of aflatoxins M1, B1 and G1 on oxidative phosphorylation by rat liver mitochondria with succinate as substrate has been studied. All these toxins inhibit the electron transport chain at a 1-10-4 M concentration and the site of inhibition is between cytochrome b and cytochrome c or c1. Aflatoxin M1 ...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(75)90106-4
更新日期：1975-02-01 00:00:00
abstract：:Although N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and methylmethanesulfonate (MMS) cause injury and malondialdehyde formation in rat hepatocytes, MNNG toxicity is much more sensitive to inhibition by antioxidants. In order to quantify the relationship between toxicity and antioxidation potential, we compared 14 ant...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/0009-2797(91)90009-v
更新日期：1991-01-01 00:00:00
abstract：:Osteoporosis is accompanied by insufficient osteogenic capacity. Several lines of evidence suggested that solutions to enhance osteoblastogenesis were important strategies for osteoporotic bone defect repair. This study investigated the effect of combined treatment with vitamin K2 and PTH on bone formation in calvaria...
journal_title：Chemico-biological interactions
pub_type： 杂志文章
doi：10.1016/j.cbi.2019.01.012
更新日期：2019-02-25 00:00:00
abstract：:ALDH1L1 (cytosolic 10-formyltetrahydrofolate dehydrogenase) is the enzyme in folate metabolism commonly downregulated in human cancers. One of the mechanisms of the enzyme downregulation is methylation of the promoter of the ALDH1L1 gene. Recent studies underscored ALDH1L1 as a candidate tumor suppressor and potential...
journal_title：Chemico-biological interactions
pub_type： 杂志文章,评审
doi：10.1016/j.cbi.2019.02.013
更新日期：2019-04-01 00:00:00
