Pharmacological and functional comparison of the polo-like kinase family: insight into inhibitor and substrate specificity.

abstract：:Voltage-dependent L-type calcium (Ca) channels are heteromultimeric proteins that are regulated through phosphorylation by cAMP-dependent protein kinase (PKA). We demonstrated that the beta 2 subunit was a substrate for PKA in intact cardiac myocytes through back-phosphorylation experiments. In addition, a heterologou...

journal_title：Biochemistry

authors： Gerhardstein BL,Puri TS,Chien AJ,Hosey MM

更新日期：1999-08-10 00:00:00

abstract：:Gluconacetobacter diazotrophicus stands out among the acetic acid bacteria as it fixes dinitrogen and is a true endophyte. It has a set of constitutive enzymes to oxidize ethanol and acetaldehyde which is upregulated during N(2)-dependent growth. The membrane-bound alcohol dehydrogenase (ADH) is a heterodimer (subunit...

journal_title：Biochemistry

authors： Gómez-Manzo S,Solano-Peralta A,Saucedo-Vázquez JP,Escamilla-Marván JE,Kroneck PM,Sosa-Torres ME

更新日期：2010-03-23 00:00:00

abstract：:The protein product of the Methanococcus jannaschii MJ0768 gene has been expressed in Escherichia coli, purified to homogeneity, and shown to catalyze the GTP-dependent addition of two l-glutamates to the l-lactyl phosphodiester of 7,8-didemethyl-8-hydroxy-5-deazariboflavin (F(420)-0) to form F(420)-0-glutamyl-glutama...

journal_title：Biochemistry

authors： Li H,Graupner M,Xu H,White RH

更新日期：2003-08-19 00:00:00

abstract：:Cells can be transiently permeabilized by application of high electric pulses of short duration. A direct consequence of this treatment is to induce a fusogenic state in the pulsed membrane. The molecular events underlying these phenomena remain to be explained. During our work, we investigated the effects of pulsing ...

journal_title：Biochemistry

authors： Rols MP,Teissié J

更新日期：1990-05-15 00:00:00

abstract：:Heterodisulfide reductase (HDR) of methanogenic archaea with its active-site [4Fe-4S] cluster catalyzes the reversible reduction of the heterodisulfide (CoM-S-S-CoB) of the methanogenic coenzyme M (CoM-SH) and coenzyme B (CoB-SH). CoM-HDR, a mechanistic-based paramagnetic intermediate generated upon half-reaction of t...

journal_title：Biochemistry

authors： Hamann N,Mander GJ,Shokes JE,Scott RA,Bennati M,Hedderich R

更新日期：2007-11-06 00:00:00

abstract：:Catalysis by glycogen phosphorylase involves a mechanism in which binding of one substrate tightens the binding of the other substrate to produce a productive ternary enzyme-substrate complex. In this work the molecular basis for this synergism is probed in crystallographic studies on ternary complexes in which the gl...

journal_title：Biochemistry

authors： Mitchell EP,Withers SG,Ermert P,Vasella AT,Garman EF,Oikonomakos NG,Johnson LN

更新日期：1996-06-11 00:00:00

abstract：:IHF and HU are small basic proteins of eubacteria that bind as homodimers to double-stranded DNA and bend the duplex to promote architectures required for gene regulation. These architectural proteins share a common alpha/beta fold but exhibit different nucleic acid binding surfaces and distinct functional roles. With...

journal_title：Biochemistry

authors： Benevides JM,Danahy J,Kawakami J,Thomas GJ Jr

更新日期：2008-03-25 00:00:00

abstract：:The PufX membrane protein is essential for photosynthetic growth of Rhodobacter sphaeroides because it is required for multiple-turnover electron transfer under anaerobic conditions [see accompanying article; Barz, W. P., Francia, F., Venturoli, G., Melandri, B. A., Verméglio, A., & Oesterhelt, D. (1995) Biochemistry ...

journal_title：Biochemistry

authors： Barz WP,Verméglio A,Francia F,Venturoli G,Melandri BA,Oesterhelt D

更新日期：1995-11-21 00:00:00

abstract：:Dihydrouridine is absent from the tRNA of almost all hyperthermophiles and most Archaea but is ubiquitous in the tRNA of Eubacteria and Eukaryotes. In order to investigate whether this could be due to instability, the rate of ring opening of dihydrouridine was measured between 25 and 120 degrees C. The dihydrouridine ...

journal_title：Biochemistry

authors： House CH,Miller SL

更新日期：1996-01-09 00:00:00

abstract：:The field of chemical site-selective modification of proteins has progressed extensively in recent decades to enable protein functionalization for imaging, drug delivery, and functional studies. In this Perspective, we provide detailed insight into an alternative use of site-selective protein chemistry to probe the ro...

journal_title：Biochemistry

authors： Bertoldo JB,Terenzi H,Hüttelmaier S,Bernardes GJL

更新日期：2018-10-30 00:00:00

abstract：:The 14-3-3 proteins interact with diverse cellular molecules involved in various signal transduction pathways controlling cell proliferation, transformation, and apoptosis. To aid our investigation of the biological function of 14-3-3 proteins, we have set out to identify high-affinity antagonists. By screening phage ...

journal_title：Biochemistry

authors： Wang B,Yang H,Liu YC,Jelinek T,Zhang L,Ruoslahti E,Fu H

更新日期：1999-09-21 00:00:00

abstract：:In eukaryotic cells, chromatin is classified into euchromatin, which is active in transcription, and heterochromatin that silences transcription. Histones in these two domains contain distinct modifications. Chromatin assembly factor 1 (CAF-1) is a highly conserved protein that functions in DNA replication, DNA repair...

journal_title：Biochemistry

authors： Zhou H,Madden BJ,Muddiman DC,Zhang Z

更新日期：2006-03-07 00:00:00

abstract：:Activation of the zymogen form of a serine protease is associated with a conformational change that follows proteolysis at a specific site. Tissue-type plasminogen activator (t-PA) is homologous to mammalian serine proteases and contains an apparent activation cleavage site at arginine-275. To clarify the functional c...

journal_title：Biochemistry

authors： Tate KM,Higgins DL,Holmes WE,Winkler ME,Heyneker HL,Vehar GA

更新日期：1987-01-27 00:00:00

abstract：:The present study was undertaken for the purpose of evaluating the solvent perturbation technique as a method to identify enzyme catalytic residues. For establishment of expected directions and sizes of pKa perturbations for different types of acids in different classes of solvents, a study of the pKa of a series of a...

journal_title：Biochemistry

authors： Grace S,Dunaway-Mariano D

更新日期：1983-08-30 00:00:00

abstract：:Gap junctions, transmembrane protein channels that directly connect the cytoplasm of neighboring cells and enable the exchange of molecules between cells, are a promising new frontier for therapeutic delivery. Specifically, cell-derived lipid vesicles that contain functional gap junction channels, termed Connectosomes...

journal_title：Biochemistry

authors： Gadok AK,Zhao C,Meriwether AI,Ferrati S,Rowley TG,Zoldan J,Smyth HDC,Stachowiak JC

更新日期：2018-01-09 00:00:00

abstract：:Previous studies have established that the mechanism of species-specific sponge cell reaggregation in vitro involves at least three components: a species-specific aggregation factor, its cell surface receptors, and Ca2+ ions. Here we report about the binding of Microciona 125I-labeled aggregation factor to cells and t...

journal_title：Biochemistry

authors： Jumblatt JE,Schlup V,Burger MM

更新日期：1980-03-04 00:00:00

abstract：:Apolipoprotein (apo) B, the major protein component of the atherogenic low-density lipoprotein (LDL), has a pentapartite structure, NH2-betaalpha1-beta1-alpha2-beta2-alpha3-COOH, the beta domains containing multiple amphipathic beta strands and the alpha domains containing multiple amphipathic alpha helixes. We recent...

journal_title：Biochemistry

authors： Dashti N,Gandhi M,Liu X,Lin X,Segrest JP

更新日期：2002-06-04 00:00:00

abstract：:A recirculating Langendorff heart preparation is used to characterize the endogenous antithrombin associated reversibly with murine vascular endothelium. Rat hearts are perfused clear of blood and then recirculated with a physiological salt solution. Addition of heparin educes antithrombin activity continuously into t...

journal_title：Biochemistry

authors： Felsch JS,Owen WG

更新日期：1994-01-25 00:00:00

abstract：:Kirromycin and related antibiotics inhibit protein synthesis in bacteria by acting on elongation factor Tu (EF-Tu). We have studied the effects of N-methylkirromycin (aurodox) on some molecular properties of this protein. The binding of the antibiotic causes a dramatic variation in the protein fluorescence emission sp...

journal_title：Biochemistry

authors： Balestrieri C,Giovane A,Quagliuolo L,Servillo L,Chinali G

更新日期：1989-08-22 00:00:00

abstract：:Six rhodopsin mutants containing disulfide cross-links between different cytoplasmic regions were prepared: disulfide bond 1, between Cys65 (interhelical loop I-II) and Cys316 (end of helix VII); disulfide bond 2, between Cys246 (end of helix VI) and Cys312 (end of helix VII); disulfide bond 3, between Cys139 (end of ...

journal_title：Biochemistry

authors： Cai K,Klein-Seetharaman J,Hwa J,Hubbell WL,Khorana HG

更新日期：1999-09-28 00:00:00

abstract：:The effect of tropomyosin alone on the binding of myosin subfragment 1 (S-1) to actin was compared to that of troponin-tropomyosin, with and without Ca2+. Over a range of ionic strength and with different ligands (adenyl-5'-yl imidodiphosphate, pyrophosphate, and adenosine 5'-diphosphate), tropomyosin confers slight c...

journal_title：Biochemistry

authors： Williams DL Jr,Greene LE

更新日期：1983-05-24 00:00:00

abstract：:Heme oxygenase (HO) catalyzes the oxidative cleavage of heme to biliverdin by utilizing O(2) and NADPH. HO (apoHO) was crystallized as twinned P3(2) with three molecules per asymmetric unit, and its crystal structure was determined at 2.55 A resolution. Structural comparison of apoHO and its complex with heme (HO-heme...

journal_title：Biochemistry

authors： Sugishima M,Sakamoto H,Kakuta Y,Omata Y,Hayashi S,Noguchi M,Fukuyama K

更新日期：2002-06-11 00:00:00

abstract：:The cytochrome aa3-type terminal quinol oxidase of Bacillus subtilis catalyzes the four-electron reduction of dioxygen to water. It resembles the aa3-type cytochrome-c oxidase in using heme A as its active-site chromophores but lacks the CuA center and the cytochrome-c oxidizing activity of the mitochondrial enzyme. W...

journal_title：Biochemistry

authors： Lauraeus M,Wikström M,Varotsis C,Tecklenburg MM,Babcock GT

更新日期：1992-10-20 00:00:00

abstract：:The proposal that microtubule dynamic instability results from stabilization of microtubule ends by tubulin-GDP-Pi subunits (where Pi is inorganic phosphate) [Melki et al. (1996) Biochemistry 35, 12038] was based on studies of GTP hydrolysis and microtubule assembly that showed that tubulin-GDP-Pi subunits can transie...

journal_title：Biochemistry

authors： Caplow M,Shanks J

更新日期：1998-09-15 00:00:00

abstract：:Napin BnIb is a representative member of the 2S albumin seed proteins, which consists of two polypeptide chains of 3.8 and 8.4 kDa linked by two disulfide bridges. In this work, a complete assignment of the 1H spectra of napin BnIb has been carried out by two-dimensional NMR sequence-specific methods and its secondary...

journal_title：Biochemistry

authors： Rico M,Bruix M,González C,Monsalve RI,Rodríguez R

更新日期：1996-12-10 00:00:00

abstract：:Recent studies implicate hydrogen sulfide (H2S) oxidation as an important aspect of bacterial antibiotic resistance and sulfide homeostasis. The cst operon of the major human pathogen Staphylococcus aureus is induced by exogenous H2S stress and encodes enzymes involved in sulfide oxidation, including a group I flavopr...

journal_title：Biochemistry

authors： Shen J,Peng H,Zhang Y,Trinidad JC,Giedroc DP

更新日期：2016-11-29 00:00:00

abstract：:Here we explore the use of ethidium to determine relative affinities of different gene delivery vectors for DNA and describe an improved method for studying the interaction. Specifically, we investigate the binding of poly(amidoamine) dendrimers and show that the DNA-dendrimer-ethidium system is far from thermodynamic...

journal_title：Biochemistry

authors： Fant K,Nordén B,Lincoln P

更新日期：2011-02-22 00:00:00

abstract：:The mechanism of DNA polymerase beta-catalyzed nucleotidyl transfer consists of chemical steps involving primer 3' OH deprotonation, nucleophilic attack, and pyrophosphate leaving-group elimination, preceded by dNTP binding which induces a large-amplitude conformational change for Watson-Crick nascent base pairs. Ambi...

journal_title：Biochemistry

authors： Sucato CA,Upton TG,Kashemirov BA,Osuna J,Oertell K,Beard WA,Wilson SH,Florián J,Warshel A,McKenna CE,Goodman MF

更新日期：2008-01-22 00:00:00

abstract：:The local and global dynamics of the chemokine receptor CXCR1 are characterized using a combination of solution NMR and solid-state NMR experiments. In isotropic bicelles (q = 0.1), only 13% of the expected number of backbone amide resonances is observed in (1)H/(15)N HSQC solution NMR spectra of uniformly (15)N-label...

journal_title：Biochemistry

authors： Park SH,Casagrande F,Das BB,Albrecht L,Chu M,Opella SJ

更新日期：2011-03-29 00:00:00

abstract：:6-[(4-Bromo-2,3-dioxobutyl)thio]-6-deaminoadenosine 5'-diphosphate (6-BDB-TADP) has been shown to react at the reduced diphosphopyridine nucleotide (DPNH) inhibitory site of bovine liver glutamate dehydrogenase with incorporation of 1 mol of reagent/mol of enzyme subunit [Batra, S. P., & Colman, R. F. (1984) Biochemis...

journal_title：Biochemistry

authors： Batra SP,Colman RF

更新日期：1986-06-17 00:00:00