Specific binding of human dihydrofolate reductase protein to dihydrofolate reductase messenger RNA in vitro.

abstract：:Human liver alanine aminopeptidase is inhibited by L-amino acids having hydrophobic side chains such as Phe, Tyr, Trp, Met, and Leu. Blocking of the amino group or the carboxyl group greatly reduces the inhibitory capacity of the amino acid. Kinetic studies demonstrate that inhibition of hydrolysis of the substrate L-...

journal_title：Biochemistry

authors： Garner CW,Behal FJ

更新日期：1975-07-15 00:00:00

abstract：:Using our Escherichia coli expression system, we have produced five mutant recombinant (r) hemoglobins (Hbs): r Hb (alpha V96 W), r Hb Presbyterian (beta N108K), r Hb Yoshizuka (beta N108D), r Hb (alpha V96W, beta N108K), and r Hb (alpha V96W, beta N108D). These r Hbs allow us to investigate the effect on the structur...

journal_title：Biochemistry

authors： Tsai CH,Shen TJ,Ho NT,Ho C

更新日期：1999-07-06 00:00:00

abstract：:Many investigations have revealed that ribosome numbers increase in parallel with the growth rate of cells. Here we show that the absolute level of protein synthesis may not be the only factor influencing rRNA synthesis in a nondividing eukaryotic cell. Under conditions of complete (greater than 99%) inhibition of pro...

journal_title：Biochemistry

authors： Yamamoto KK,Pellegrini M

更新日期：1990-12-18 00:00:00

abstract：:The iminodihydroquinoline WIN 17317-3 was previously shown to inhibit selectively the voltage-gated potassium channels, K(v)1.3 and K(v)1.4 [Hill, R. J., et al. (1995) Mol. Pharmacol. 48, 98-104; Nguyen, A., et al. (1996) Mol. Pharmacol. 50, 1672-1679]. Since these channels are found in brain, radiolabeled WIN 17317-3...

journal_title：Biochemistry

authors： Wanner SG,Glossmann H,Knaus HG,Baker R,Parsons W,Rupprecht KM,Brochu R,Cohen CJ,Schmalhofer W,Smith M,Warren V,Garcia ML,Kaczorowski GJ

更新日期：1999-08-24 00:00:00

abstract：:Hydrogen bonds which form between a hydrogen bond donor and an aromatic ring as acceptor are thought to contribute to the stability and function of proteins. We have tested the function of such an interaction in a highly homologous pair of proteins, cellular retinol-binding protein (CRBP) and cellular retinol-binding ...

journal_title：Biochemistry

authors： Jamison RS,Kakkad B,Ebert DH,Newcomer ME,Ong DE

更新日期：1995-09-05 00:00:00

abstract：:We report here that the DNA strand scission by dynemicin A is not only sequence-specific but also conformation-specific. The salt-induced B----Z conformational transition dramatically enhanced the cleavage by dynemicin A in a B-Z junction region. By contrast, the bleomycin-Fe(II) complex, the elsamicin A-Fe(II) comple...

journal_title：Biochemistry

authors： Ichikawa A,Kuboya T,Aoyama T,Sugiura Y

更新日期：1992-07-28 00:00:00

abstract：:Site-directed mutagenesis, electron microscopy, and X-ray crystallography were used to probe the structural basis of annexin IV-induced membrane aggregation and the inhibition of this property by protein kinase C phosphorylation. Site-directed mutants that either mimic (Thr6Asp, T6D) or prevent (Thr6Ala, T6A) phosphor...

journal_title：Biochemistry

authors： Kaetzel MA,Mo YD,Mealy TR,Campos B,Bergsma-Schutter W,Brisson A,Dedman JR,Seaton BA

更新日期：2001-04-03 00:00:00

abstract：:We have employed a combination of gel retardation, protein-DNA cross-linking, and protein-protein cross-linking techniques to further examine the 2,3,7,8-tetrachlorodibenzo-p- dioxin-(TCDD-) dependent changes in the Ah receptor that result in a DNA-binding conformation. Gel retardation analysis of DNA-Sepharose chroma...

journal_title：Biochemistry

authors： Gasiewicz TA,Elferink CJ,Henry EC

更新日期：1991-03-19 00:00:00

abstract：:A modified form of procollagen was extracted with 10 M urea from the skin of lambs with dermatosparaxis, a disease which is produced by a genetic defect in the conversion of procollagen to collagen. The extracts contained little if any alpha1 and alpha2 chains of normal type I collagen, and instead they contained the ...

journal_title：Biochemistry

authors： Becker U,Timpl R

更新日期：1976-06-29 00:00:00

abstract：:Frequency-resolved fluorescence measurements have been performed to quantitate the lateral stress of the lipid layer containing nonbilayer phase preferring dioleoylphosphatidylethanolamine (DOPE). On the basis of a new rotational diffusion model, the wobbling diffusion constant (Dw), the curvature-related hopping diff...

journal_title：Biochemistry

authors： Chen SY,Cheng KH,Van der Meer BW

更新日期：1992-04-21 00:00:00

abstract：:The importance of two buried salt bridges in barnase in the stability of its folded state, the major transition rate for unfolding, and a folding intermediate has been analyzed by protein engineering, kinetic, and thermodynamic studies. The aspartate residues in the bridges Arg69-Asp93 and Arg83-Asp75 were replaced by...

journal_title：Biochemistry

authors： Tissot AC,Vuilleumier S,Fersht AR

更新日期：1996-05-28 00:00:00

abstract：:The conformation of the GM3 ganglioside, Neu5Ac alpha 2-3Gal beta 1-4Glc beta 1-1 Cer, and its analogs containing the Neu5Gc or Neu4Ac5Gc residues (Gc = glycolyl, CH2OHCO) was investigated in Me2SO-d6 solution with the aid of a distance-mapping procedure based on rotating-frame NOE contacts, with hydroxyl protons bein...

journal_title：Biochemistry

authors： Siebert HC,Reuter G,Schauer R,von der Lieth CW,Dabrowski J

更新日期：1992-08-04 00:00:00

abstract：:A heparin-induced conformational change is required to convert antithrombin from a slow to a fast inhibitor of factor Xa. It has been proposed [van Boeckel et al. (1994) Nat. Struct. Biol. 1, 423-425] that the reactive center residue P14 is inserted into beta-sheet A in native antithrombin and is displaced from the be...

journal_title：Biochemistry

authors： Huntington JA,Olson ST,Fan B,Gettins PG

更新日期：1996-07-02 00:00:00

abstract：:We characterized endocytosis of iron-saturated (holo) and iron-depleted (apo) 125I-labeled bovine lactoferrin (Lf) by isolated rat hepatocytes. Hepatocytes ingested both Lf forms--determined by EGTA/dextran sulfate removal of surface-bound Lf--at maximal endocytic rates of 1.85 and 1.52 fmol cell-1 min-1 for 125I-apo-...

journal_title：Biochemistry

authors： McAbee DD,Nowatzke W,Oehler C,Sitaram M,Sbaschnig E,Opferman JT,Carr J,Esbensen K

更新日期：1993-12-14 00:00:00

abstract：:Experiments were performed to elucidate the mechanism of hydrocarbon formation in microsomal preparations from the house fly, Musca domestica. Antibody to both house fly cytochrome P450 reductase and a purified cytochrome P450 (CYP6A1) from the house fly inhibited (Z)-9-tricosene (Z9-23:Hy) formation from [15,16-3H]-(...

journal_title：Biochemistry

authors： Reed JR,Quilici DR,Blomquist GJ,Reitz RC

更新日期：1995-12-12 00:00:00

abstract：:The structure of the dimeric form of the protein L7/L12 from ribosomes from Escherichia coli was studied by using the heterobifunctional cross-linker 4-(6-formyl-3-azidophenoxy)butyrimidate. The imidate group of the cross-linker reacts very specifically with Lys-51 of L7/L12. Subsequent cross-linking of this modified ...

journal_title：Biochemistry

authors： Maassen JA,Schop EN,Möller W

更新日期：1981-02-17 00:00:00

abstract：:The folding kinetics of a 16-residue beta-hairpin (trpzip4) and five mutants were studied by a laser-induced temperature-jump infrared method. Our results indicate that mutations which affect the strength of the hydrophobic cluster lead to a decrease in the thermal stability of the beta-hairpin, as a result of increas...

journal_title：Biochemistry

authors： Du D,Tucker MJ,Gai F

更新日期：2006-02-28 00:00:00

abstract：:Chemosensory cilia isolated from the olfactory epithelium of Rana catesbeiana were solubilized with Lubrol PX in the presence of supplementary lipid, forskolin, and sodium fluoride. Subsequent removal of the detergent by adsorption onto Biobeads SM2 results in the formation of proteoliposomes that display forskolin- a...

journal_title：Biochemistry

authors： Anholt RR

更新日期：1988-08-23 00:00:00

abstract：:Maltosyl isothiocyanate (MITC) has been synthesized from maltose with an overall yield of 88%. It has been found to be a potent irreversible inhibitor of zero trans influx of glucose with human erythrocytes. Kinetic analysis of glucose transport after treatment of erythrocytes with MITC revealed that VT was diminished...

journal_title：Biochemistry

authors： Mullins RE,Langdon RG

更新日期：1980-03-18 00:00:00

abstract：:The calcitonin gene-related peptide (CGRP) receptor is a heterodimer of two membrane proteins: calcitonin receptor-like receptor (CLR) and receptor activity-modifying protein 1 (RAMP1). CLR is a class B G-protein-coupled receptor (GPCR), possessing a characteristic large amino-terminal extracellular domain (ECD) impor...

journal_title：Biochemistry

authors： Koth CM,Abdul-Manan N,Lepre CA,Connolly PJ,Yoo S,Mohanty AK,Lippke JA,Zwahlen J,Coll JT,Doran JD,Garcia-Guzman M,Moore JM

更新日期：2010-03-09 00:00:00

abstract：:An investigation into the kinetics and regulatory properties of the type-1 phosphofructokinase (PFK) from the extreme thermophile Thermus thermophilus (TtPFK) reveals an enzyme that is inhibited by PEP and activated by ADP by modifying the affinity exhibited for the substrate fructose 6-phosphate (Fru-6-P) in a manner...

journal_title：Biochemistry

authors： McGresham MS,Lovingshimer M,Reinhart GD

更新日期：2014-01-14 00:00:00

abstract：:Much interest has centered on two surface loops in the motor domain to explain the differences in enzymatic and mechanical properties of myosin isoforms. We showed that two invariant lysines at the C-terminal end of loop 2, which is part of the actin-binding interface, are required to obtain actin activation [Joel et ...

journal_title：Biochemistry

authors： Joel PB,Sweeney HL,Trybus KM

更新日期：2003-08-05 00:00:00

abstract：:Exchangeable imidazole NH proton nuclear magnetic resonance (NMR) signals of the proximal histidine F8, which is directly coordinated to the paramagnetic porphyrin cobalt ion, have been measured for cobalt-substituted deoxyhemoglobins (deoxy-CoHb) and iron-cobalt hybrid hemoglobins, alpha (Co)2 beta (Fe)2 and alpha (F...

journal_title：Biochemistry

authors： Inubushi T,Ikeda-Saito M,Yonetani T

更新日期：1983-06-07 00:00:00

abstract：:Conformations of (R)-alpha-(N6-adenyl)styrene oxide adducts at positions X6 in d(CGGACXAGAAG).d(CTTCTTGTCCG) and X7 in d(CGGACAXGAAG).d(CTTCTTGTCCG), incorporating codons 60, 61 (underlined), and 62 of the human n-ras protooncogene, were refined from 1H NMR data. These were the R(61,2) and R(61,3) adducts. Chemical sh...

journal_title：Biochemistry

authors： Feng B,Zhou L,Passarelli M,Harris CM,Harris TM,Stone MP

更新日期：1995-10-31 00:00:00

abstract：:Fas and its ligand (FasL) are members of the tumor necrosis factor receptor (TNFR) and tumor necrosis factor (TNF) superfamilies, respectively. Fas-FasL interactions trigger controlled cell death (apoptosis) in the immune system and thus play a key role in the regulation of immune responses. Structural details of the ...

journal_title：Biochemistry

authors： Starling GC,Kiener PA,Aruffo A,Bajorath J

更新日期：1998-03-17 00:00:00

abstract：:G.U pairs occur frequently and have many important biological functions. The stability of symmetric tandem G.U motifs depends both on the adjacent Watson-Crick base pairs, e.g., 5'G > 5'C, and the sequence of the G.U pairs, i.e., 5'-UG-3' > 5'-GU-3', where an underline represents a nucleotide in a G.U pair [Wu, M., Mc...

journal_title：Biochemistry

authors： Chen X,McDowell JA,Kierzek R,Krugh TR,Turner DH

更新日期：2000-08-01 00:00:00

abstract：:(S)-Mandelate dehydrogenase from Pseudomonas putida belongs to a FMN-dependent enzyme family that oxidizes (S)-alpha-hydroxyacids. Despite a high degree of sequence and structural similarity, this family can be divided into three subgroups based on the different oxidants utilized in the second oxidative half-reaction....

journal_title：Biochemistry

authors： Dewanti AR,Xu Y,Mitra B

更新日期：2004-08-24 00:00:00

abstract：:Laser light scattering has been applied to a systematic study of a heterogeneous solution of tubulin at low temperature--conditions under which tubulin assembly into microtubules does not take place. Methods of analyzing laser light scattering results obtained from solutions containing multiple components are discusse...

journal_title：Biochemistry

authors： Gethner JS,Flynn GW,Berne BJ,Gaskin F

更新日期：1977-12-27 00:00:00

abstract：:Bicyclomycin is a novel, commercially important antibiotic. Information concerning the site of bicyclomycin inhibition in Escherichia coli has been obtained by the production of bicyclomycin resistant mutants by UV irradiation. Selection by growth in the presence of bicyclomycin of a plasmid clone library generated fr...

journal_title：Biochemistry

authors： Zwiefka A,Kohn H,Widger WR

更新日期：1993-04-13 00:00:00

abstract：:The Bordetella adenylate cyclase toxin-hemolysin (CyaA, ACT, or AC-Hly) forms cation-selective membrane channels and delivers into the cytosol of target cells an adenylate cyclase domain (AC) that catalyzes uncontrolled conversion of cellular ATP to cAMP. Both toxin activities were previously shown to depend on post-t...

journal_title：Biochemistry

authors： Masin J,Basler M,Knapp O,El-Azami-El-Idrissi M,Maier E,Konopasek I,Benz R,Leclerc C,Sebo P

更新日期：2005-09-27 00:00:00