Abstract:
:A pair of functional moieties, the carboxyl of an aspartic acid (Asp, D) residue and an N-methyl nicotinamide (NMeN) formed on amide linkage to the epsilon-amino group of the lysine (Lys, K) residue, are coupled to perform energy conversion by means of controlling the transition temperature, Tt, of a common hydrophobic folding and assembly domain within the polytricosapeptide, poly[GDGFP GVGVP GVGVP GFGVP GVGVP GVGK(NMeN)P]. The input of electrochemical energy in the form of the reduction of nicotinamide results in a reduction-induced increase in pKa by 2.5 pH units which represents the performance of the chemical work of picking up a proton. The primary structure and the structures of the oxidized and reduced states are verified by two-dimensional nuclear magnetic resonance. Thus electrochemical transduction, the conversion of electrochemical energy into chemical energy, has been demonstrated for the first time in a designed, synthetic protein-based polymer.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Urry DW,Hayes LC,Gowda DC,Peng SQ,Jing Ndoi
10.1006/bbrc.1995.1760subject
Has Abstractpub_date
1995-05-25 00:00:00pages
1031-9issue
3eissn
0006-291Xissn
1090-2104pii
S0006291X85717603journal_volume
210pub_type
杂志文章abstract::A Bacillus thuringiensis isolate, 89-T-34-22, belonging to the serovar shandongiensis (H22) produced noninsecticidal and nonhemolytic proteins crystallizing into irregular-shaped parasporal inclusions. The proteins showed in vitro cytotoxicity to human cells, including cancer cells, only when activated by protease tre...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.2765
更新日期:2000-05-27 00:00:00
abstract::Platelet activating factor has been found to increase the intracellular level of free calcium (as monitored by the fluorescent calcium indicator quin-2) and to stimulate the turnover of the polyphosphoinositides in rabbit neutrophils. Calcium mobilization induced by platelet activating factor, in contrast to previous ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(85)90470-x
更新日期:1985-07-31 00:00:00
abstract::The distribution of SQSC1 mRNA in tissues of squid Loligo bleekeri was studied by the blot hybridization method. The complete cDNA for the coding region of SQSC1, the invertebrate putative sodium channel, was prepared from squid optic lobe (Sato and Matsumoto, Biochem. Biophys. Res. Comm. 186, 61-68, 1992). Transcript...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.1115
更新日期:1995-01-26 00:00:00
abstract::Cells of the sponge Microciona prolifera dissociated in Ca,Mg-free sea water reaggregate upon addition of Ca, an observation classically attributed to the requirement for Ca of a species-specific aggregation factor. We now report that, unexpectedly, extracellular Ca is not required during aggregation; brief Ca pulses ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(86)90394-3
更新日期:1986-02-13 00:00:00
abstract::DR4, a tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) receptor, is a key element in the extrinsic pathway of TRAIL/TRAIL receptor-related apoptosis that exerts a preferential toxic effect against tumor cells. However, TRAIL and DR4 are expressed in various normal cells, and recent studies indicate tha...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2008.08.159
更新日期:2008-11-14 00:00:00
abstract::3-Hydroxy-3',4'-dimethoxyflavone (HDMF) is a natural chemical product that is not currently regarded as a drug. In our study, we employed glioblastoma cells and cell biology and biochemistry approaches to investigate the potential of HDMF as a natural anticancer therapy option. FACS analysis showed that treatment conc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2014.06.038
更新日期:2014-07-18 00:00:00
abstract::We have investigated the status of the MTS2 gene, encoding the cyclin-dependent kinase (CDK) inhibitor p15, in 32 glioblastomas. Semi-quantitative PCR identified 7 tumors in which the amplified material was 18.6% of controls and 7 in which was 48.0%, suggesting the occurrence of homozygous and hemizygous deletions, re...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.2763
更新日期:1995-12-05 00:00:00
abstract::Transplantation of normal myoblasts into dystrophic muscles is a potential treatment for Duchenne muscular dystrophy (DMD). However, the success of such grafts is limited by the immune system responses. To avoid rejection problems, autologous transplantation of the patient's corrected myoblasts has been proposed. Regr...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8995
更新日期:1998-07-30 00:00:00
abstract::The DNA-binding activity of a 42-kDa phosphoprotein from salivary gland cells and cultured epithelial cells of Chironomus tentans have been analyzed by the Southwestern technique. Both the salivary gland and the epithelial cell 42-kDa polypeptides were found to be single-stranded DNA-binding proteins. They bind to sin...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(91)90466-k
更新日期:1991-05-15 00:00:00
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.02.098
更新日期:2017-04-01 00:00:00
abstract::Amyloid β (Aβ) oligomers may be a real culprit in the pathogenesis of Alzheimer's disease (AD); therefore, the elimination of these toxic oligomers may be of great significance for AD therapy. Autophagy is the catabolic process by which lysosomes degrade cytosolic components, and heat shock cognate 70 kDa protein (Hsc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2020.02.016
更新日期:2020-04-16 00:00:00
abstract::The NC1 domains from the different α(IV) collagen chains were found to exert anti-tumorigenic and/or anti-angiogenic activities. A limitation to the therapeutic use of these matrikines is the large amount of purified recombinant proteins, in the milligram range in mice that should be administered daily throughout the ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2013.02.074
更新日期:2013-03-22 00:00:00
abstract::The epithelial sodium channel (ENaC) controls colonic sodium absorption. So far, investigation of ENaC was limited by an unexplained lack of steroid-dependent ENaC expression in cultured intestinal cells, which we aimed to resolve. HT-29/B6 cells constitutively expressed the alpha-ENaC subunit, while beta- and gamma-E...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.04.012
更新日期:2006-06-16 00:00:00
abstract::This article has been withdrawn at the request of the author(s). The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy. ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2014.05.007
更新日期:2014-05-10 00:00:00
abstract::The contribution of four transport pathways to Li+ influx in human, chicken and eel erythrocytes was studied. All pathways were measured simultaneously in each kind of blood sample to avoid possible temporal variations in transport parameters. We found that: 1) Li+ influx via Na(+)-K+ pump increased 2-3 fold in the or...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.1635
更新日期:1995-05-05 00:00:00
abstract::In contrast to its stimulation of insulin binding to human placental membranes, calcium inhibited the binding of insulin-like growth factor-I. The effects on receptors for both peptides were half-maximal at 2 mM calcium, and were entirely due to alterations in high affinity binding sites for the respective ligands. Ca...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(83)90380-7
更新日期:1983-10-14 00:00:00
abstract::The hepatic microsomal monooxygenase system was studied in hypophysectomized male rats exposed for 24 or 48 h to PB and/or TPA, an activator of kinase C. TPA attenuated basal and PB-induced levels of P450, aniline hydroxylase (ANH), ethylmorphine demethylase (EDM) and cytochrome c reductase. Hence, PB may effect induc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(88)81155-0
更新日期:1988-06-16 00:00:00
abstract::Immunoblot analysis of the conditioned medium of v-Ha-ras-transformed NIH3T3 cells showed that Ras protein is secreted in the culture fluid. Because cathepsins L and B whose activities are inhibited by Ras are also secreted, possible association between Ras and cathepsins was investigated by immunoprecipitation and fo...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.2696
更新日期:1995-11-22 00:00:00
abstract:BACKGROUND & AIMS:Concentrations of the branched-chain amino acid (BCAA) in the serum of patients with liver cirrhosis correlate with their liver function. Oral administration of BCAA can ameliorate hypoalbuminemia and hepatic encephalopathy. In this study, we aim to clarify the role of BCAA in regulating the replicati...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2013.06.051
更新日期:2013-07-19 00:00:00
abstract::To investigate the effect of ionophores on Cl- distribution in human erythrocyte suspensions, we measured the membrane potential by using 19F and 31P NMR methods. Incubation of human erythrocytes with 0.005 mM of the neutral ionophores valinomycin and nonactin resulted in membrane potentials of -21.2 and -17.8 mV in t...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)90678-e
更新日期:1992-04-30 00:00:00
abstract::P-glycoprotein (P-gp) is required for adaptive immunity through defined functions in T cell activation and antigen presenting cell (APC) maturation. The potential role of P-gp as an in vivo regulator of alloimmunity is currently unknown. Here we show that P-gp blockade prolongs graft survival in a murine heterotopic c...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.03.040
更新日期:2010-04-09 00:00:00
abstract::BRAF25 is an alternatively spliced protein of BRAF35 (see associated paper). We have mapped the BRAF25 gene to chromosome sub-band 19p13.3, a region where loss of chromosomal heterozygosity has been reported in about 50% of ovarian cancers. Because of the high incidence of genetic links of prostate cancer to breast an...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)00625-3
更新日期:2002-07-05 00:00:00
abstract::To tailor tissue-type plasminogen activator (tPA) to possess an affinity for the integrins, several mutants were constructed by introducing the Arg-Gly-Asp (RGD) sequene into the tPA molecule. These mutants were expressed in COS-1 cells and partially purified by lysine-Sepharose chromatography. The RGD-dependent bindi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.1657
更新日期:1996-11-12 00:00:00
abstract::Three different domains of human sperm membrane, viz., the hydrophobic domains, the aqueous compartments and the surface proteins were probed to evaluate the molecular dynamics in these microenvironments in normal as well as oligospermic cases. Decreased rotational motion of the stearic spin-labels, designated rigid l...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1037
更新日期:1994-01-14 00:00:00
abstract::Oxytocin binding activity of myoepithelial cell membranes from mammary tissue was measured under a variety of different experimental conditions. Mammary tissue from non-lactating rats bound oxytocin with a Kd of 9.2 +/- 1.6 nM (+/- S.E.) and indicates that receptors are retained by the myoepithelial cells in a non-lac...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(83)91521-8
更新日期:1983-04-29 00:00:00
abstract::The status of Ca(2+)-channels and adrenoceptors in the hind leg skeletal muscle was examined in rats 8 weeks after inducing diabetes by an intravenous injection of streptozotocin (65 mg/kg). Scatchard plot analysis of the data on specific binding of 3H-nitrendipine with crude membranes from diabetic muscle revealed an...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)91200-a
更新日期:1992-04-15 00:00:00
abstract::Limited proteolysis converts the 39200 molecular weight catalytic domain of rat tyrosine hydroxylase to a monomer with a molecular weight of 37600. The purified monomer is almost fully active, with minor changes in kinetic parameters at pH 7. Mass spectral analysis and N-terminal sequencing of the proteolytically gene...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2653
更新日期:1993-12-30 00:00:00
abstract::Advanced glycation end products (AGE) are involved in tissue damage and remodeling. This study investigated whether AGE could elicit inflammatory and fibrogenic reactions in fibroblast cell line MRC-5 cells via autocrine production of aldosterone and if nifedipine could block the AGE actions through mineralocorticoid ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.04.149
更新日期:2010-05-28 00:00:00
abstract::Hepatocyte growth factor, which is now known to be the same protein as scatter factor, induced oligonucleosomal fragmentation of nuclear DNA of Sarcoma 180 cells and increased the activity of caspase-3, a key component in control of the apoptotic cell death pathway to about 2.6 times that in control cells on 48 hr inc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8397
更新日期:1998-04-07 00:00:00
abstract::Gonadotropin releasing hormone (GnRH), preincubated with cultured rat pituitary cells, induced down regulation of GnRH receptors in a time- and dose-dependent manner. The specific binding was inhibited by 50% after 30 min and maximal inhibition (70%) was obtained after 75 min preincubation with 1 microM GnRH. Preincub...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(84)90572-2
更新日期:1984-12-14 00:00:00