Two types of hydrocarbon chain interdigitation in sphingomyelin bilayers.

abstract：:We have developed a homogeneous time-resolved fluorescence resonance energy transfer (FRET)-based assay that detects the formation of HIV-1 integrase (IN) dimers. The assay utilizes IN monomers that express two different epitope tags that are recognized by their respective antibodies, coupled to distinct fluorophores....

journal_title：Biochemistry

authors： Tsiang M,Jones GS,Hung M,Samuel D,Novikov N,Mukund S,Brendza KM,Niedziela-Majka A,Jin D,Liu X,Mitchell M,Sakowicz R,Geleziunas R

更新日期：2011-03-15 00:00:00

abstract：:Kinetics studies in homogeneous aqueous solution showed that solubilized penicillin-binding protein 2a (sPBP2a) of methicillin-resistant Staphylococcus aureus (a bacterial DD-peptidase) was inhibited by the amphiphilic glycolipid antibiotic moenomycin. Inhibition at the peptidase site was determined by competition exp...

journal_title：Biochemistry

authors： Graves-Woodward K,Pratt RF

更新日期：1999-08-10 00:00:00

abstract：:Electron paramagnetic resonance (EPR) at 15 K was used to probe the magnetic interaction between the visible copper CuA2+ and ferric cytochrome a in the carbon monoxide compound of beef heart cytochrome oxidase. At pH 8.6, the midpoint potentials (Em's) for one-electron oxidation of CuA+ and cytochrome a2+ were found ...

journal_title：Biochemistry

authors： Goodman G,Leigh JS Jr

更新日期：1985-04-23 00:00:00

abstract：:Factor V and factor Va binding to single bilayer phospholipid vesicles was investigated by light-scattering intensity measurements. This technique allows the measurement of free and phospholipid-bound protein concentrations from which equilibrium constants can be obtained. As controls, the Ca2+-dependent phospholipid ...

journal_title：Biochemistry

authors： Bloom JW,Nesheim ME,Mann KG

更新日期：1979-10-02 00:00:00

abstract：:Penicillin-binding protein 5 (PBP 5) from Escherichia coli is a well-characterized d-alanine carboxypeptidase that serves as a prototypical enzyme to elucidate the structure, function, and catalytic mechanism of PBPs. A comprehensive understanding of the catalytic mechanism underlying d-alanine carboxypeptidation and ...

journal_title：Biochemistry

authors： Nicola G,Peddi S,Stefanova M,Nicholas RA,Gutheil WG,Davies C

更新日期：2005-06-14 00:00:00

abstract：:From the larger set of 191 variants at all the variable contact positions in the turkey ovomucoid third domain, we selected a subset that consists of Asp, Glu, His, and Lys residues at eight of the nine contiguous P6-P3' positions (residues 13-21), the exception being P3-Cys16 which is involved in a conserved disulfid...

journal_title：Biochemistry

authors： Song J,Laskowski M Jr,Qasim MA,Markley JL

更新日期：2003-03-18 00:00:00

abstract：:Clostridial neurotoxins are zinc endopeptidases, and each contains one Zn(2+)/molecule. To investigate the structural/functional role of Zn(2+) in botulinum neurotoxin light chain (the enzymatic subunit of the neurotoxin), the effect of the removal of zinc on protein folding and enzyme kinetics was investigated. The a...

journal_title：Biochemistry

authors： Li L,Singh BR

更新日期：2000-08-29 00:00:00

abstract：:We have detected at least four forms of DNA-dependent ATPase in mouse FM3A cell extracts [Tawaragi, Y., Enomoto, T., Watanabe, Y., Hanaoka, F., & Yamada, M. (1984) Biochemistry 23, 529-533]. The purified fraction of one of the four forms, ATPase B, has been shown to have DNA helicase activity by using a DNA substrate ...

journal_title：Biochemistry

authors： Seki M,Enomoto T,Hanaoka F,Yamada M

更新日期：1987-05-19 00:00:00

abstract：:During translation, the small subunit of the ribosome rotates with respect to the large subunit primarily between two states as mRNA is being translated into a protein. At the termination of bacterial translation, class I release factors (RFs) bind to a stop codon in the A-site and catalyze the release of the peptide ...

journal_title：Biochemistry

authors： Casy W,Prater AR,Cornish PV

更新日期：2018-04-03 00:00:00

abstract：:Trypanosoma and Leishmania, pathogens responsible for diseases such as African sleeping sickness, Chagas' heart disease, or Oriental sore, are two of the very few genera that do not use the ubiquitous glutathione/glutathione reductase system to keep a stable cellular redox balance. Instead, they rely on trypanothione ...

journal_title：Biochemistry

authors： Stoll VS,Simpson SJ,Krauth-Siegel RL,Walsh CT,Pai EF

更新日期：1997-05-27 00:00:00

abstract：:To describe the time course of cellular systems, we integrate ideas from thermodynamics and information theory to discuss the work needed to change the state of the cell. The biological example analyzed is experimental microarray transcription level oscillations of yeast in the different phases as characterized by oxy...

journal_title：Biochemistry

authors： Gross A,Li CM,Remacle F,Levine RD

更新日期：2013-03-05 00:00:00

abstract：:Formylglycinamide ribonucleotide amidotransferase (FGAR-AT) catalyzes the ATP- and glutamine-dependent formation of formylglycinamidine ribonucleotide, ADP, P(i), and glutamate in the fourth step of de novo purine biosynthesis. Like all amidotransferases (ATs), FGAR-AT is proposed to channel ammonia between a glutamin...

journal_title：Biochemistry

authors： Hoskins AA,Anand R,Ealick SE,Stubbe J

更新日期：2004-08-17 00:00:00

abstract：:Photolyases (PHRs) repair the UV-induced photoproducts, cyclobutane pyrimidine dimer (CPD) or pyrimidine-pyrimidone (6-4) photoproduct [(6-4) PP], restoring normal bases to maintain genetic integrity. CPD and (6-4) PP are repaired by substrate-specific PHRs, CPD PHR and (6-4) PHR, respectively. Flavin adenine dinucleo...

journal_title：Biochemistry

authors： Yamada D,Yamamoto J,Zhang Y,Iwata T,Hitomi K,Getzoff ED,Iwai S,Kandori H

更新日期：2016-02-02 00:00:00

abstract：:The amino acid sequence of the sex steroid binding protein (SBP) from human plasma has been determined. The SBP subunit consists of a 373-residue polypeptide chain containing two disulfide bonds and three oligosaccharide chains. The sequence was solved primarily by analysis of peptides derived by cleavage at either ly...

journal_title：Biochemistry

authors： Walsh KA,Titani K,Takio K,Kumar S,Hayes R,Petra PH

更新日期：1986-11-18 00:00:00

abstract：:Heparan sulfate (HS) proteoglycans (PGs) interact with a number of extracellular signaling proteins, thereby playing an essential role in the regulation of many physiological processes. These interactions are important for both normal signal transduction and regulation of the tissue distribution of signaling molecules...

journal_title：Biochemistry

authors： Zhang F,McLellan JS,Ayala AM,Leahy DJ,Linhardt RJ

更新日期：2007-04-03 00:00:00

abstract：:The diiron active sites of the purple acid phosphatases from porcine uterus (also called uteroferrin, Uf) and bovine spleen (BSPAP) and their complexes with tungstate are compared by 1H NMR and NOE techniques. The paramagnetically shifted features of the 1H NMR spectrum of reduced BSPAP are similar to those of reduced...

journal_title：Biochemistry

authors： Wang Z,Ming LJ,Que L Jr,Vincent JB,Crowder MW,Averill BA

更新日期：1992-06-16 00:00:00

abstract：:Out of over 60 single-Cys mutants in putative periplasmic loops in lactose permease, three mutants [Tyr101 --> Cys (loop III/IV), Leu313 --> Cys (loop IX/X), and Ser375 --> Cys (loop XI/XII)] spontaneously form disulfide-linked dimers, indicating that these loops are located on the periphery of the 12-helix bundle tha...

journal_title：Biochemistry

authors： Sun J,Kaback HR

更新日期：1997-09-30 00:00:00

abstract：:7,8-diaminopelargonic acid (DAPA) synthase (EC 2.6.1.62) is a pyridoxal phosphate (PLP)-dependent transaminase that catalyzes the transfer of the alpha-amino group from S-adenosyl-L-methionine (SAM) to 7-keto-8-aminopelargonic acid (KAPA) to form DAPA in the antepenultimate step in the biosynthesis of biotin. The wild...

journal_title：Biochemistry

authors： Eliot AC,Sandmark J,Schneider G,Kirsch JF

更新日期：2002-10-22 00:00:00

abstract：:Geobacillus stearothermophilus T-6 encodes for a beta-xylosidase (XynB2) from family 52 of glycoside hydrolases that was previously shown to hydrolyze its substrate with net retention of the anomeric configuration. XynB2 significantly prefers substrates with xylose as the glycone moiety and exhibits a typical bell-sha...

journal_title：Biochemistry

authors： Bravman T,Zolotnitsky G,Belakhov V,Shoham G,Henrissat B,Baasov T,Shoham Y

更新日期：2003-09-09 00:00:00

abstract：:Our recently reported pressure-jump relaxation kinetics experiments on staphylococcal nuclease folding and unfolding [Vidugiris et al. (1995) Biochemistry 34, 4909] demonstrated that both transitions exhibit positive activation volumes, with that of folding being much larger than that of unfolding. Thus high pressure ...

journal_title：Biochemistry

authors： Vidugiris GJ,Truckses DM,Markley JL,Royer CA

更新日期：1996-03-26 00:00:00

abstract：:The proton nuclear Overhauser effects of bovine alpha-lactalbumin were studied at 200 MHz by irradiation of an upfield ring current shifted methylene at -2.45 ppm (assigned to Ile-95) and two aromatic protons, Tyr-103 (8.36 ppm) and Trp-60 (5.85 ppm). The experimental results were consistent with a putative three-dime...

journal_title：Biochemistry

authors： Koga K,Berliner LJ

更新日期：1985-12-03 00:00:00

abstract：:The structure and folding of a novel human insulin mutant, [Thr(B27) --> Pro, Pro(B28) --> Thr]insulin (PT insulin), in aqueous solution and in mixtures of water and 2,2,2-trifluoroethanol (TFE) have been studied by NMR spectroscopy. It was found that PT insulin has a highly flexible structure in pure water and is pre...

journal_title：Biochemistry

authors： Keller D,Clausen R,Josefsen K,Led JJ

更新日期：2001-09-04 00:00:00

abstract：:Pseudokinases play important roles in signal transduction and cellular processes similar to those of catalytically competent kinases. However, pseudokinase pharmacological tractability and conformational space accessibility are poorly understood. Pseudokinases have only recently been suggested to adopt "inactive" conf...

journal_title：Biochemistry

authors： Smith RHB,Khan ZM,Ung PM,Scopton AP,Silber L,Mack SM,Real AM,Schlessinger A,Dar AC

更新日期：2021-01-13 00:00:00

abstract：:Basic peptides from the carboxy terminus of the human immunodeficiency virus type 1 (HIV-1) Tat protein bind to the stem-loop region of TAR RNA, spanning a trinucleotide bulge, with high affinity and moderate specificity. Previous studies have demonstrated that TAR RNA contains a specific arginine binding pocket. A se...

journal_title：Biochemistry

authors： Long KS,Crothers DM

更新日期：1995-07-11 00:00:00

abstract：:The crystal structure of a ternary complex of the alcohol dehydrogenase from the archaeon Sulfolobus solfataricus (SsADH) has been determined at 2.3 A. The asymmetric unit contains a dimer with a NADH and a 2-ethoxyethanol molecule bound to each subunit. The comparison with the apo structure of the enzyme reveals that...

journal_title：Biochemistry

authors： Esposito L,Bruno I,Sica F,Raia CA,Giordano A,Rossi M,Mazzarella L,Zagari A

更新日期：2003-12-16 00:00:00

abstract：:To reduce ribonucleotides to deoxyribonucleotides, the manganese-bound form of class Ib ribonucleotide reductase (RNR) must be activated via a pathway that involves redox protein(s). The reduced flavoprotein NrdI is an important protein in this pathway, as it reduces dioxygen to superoxide. Superoxide then reacts with...

journal_title：Biochemistry

authors： Lofstad M,Gudim I,Hammerstad M,Røhr ÅK,Hersleth HP

更新日期：2016-09-13 00:00:00

abstract：:A [4Fe-4S] enzyme that decomposes L-cysteine to hydrogen sulfide, ammonia, and pyruvate has been isolated and characterized from Methanocaldococcus jannaschii. The sequence of the isolated enzyme demonstrated that the protein was the product of the M. jannaschii MJ1025 gene. The protein product of this gene was recomb...

journal_title：Biochemistry

authors： Tchong SI,Xu H,White RH

更新日期：2005-02-08 00:00:00

abstract：:Single-strand-specific nucleases are a diverse and important group of enzymes that are able to cleave a variety of DNA structures present in duplex molecules. Nuclease SP, an enzyme from spinach, has been purified to apparent homogeneity, allowing for the unambiguous characterization of a number of its physical proper...

journal_title：Biochemistry

authors： Strickland JA,Marzilli LG,Puckett JM Jr,Doetsch PW

更新日期：1991-10-08 00:00:00

abstract：:The mechanism of herpesviral protease activation upon dimerization was studied using two independent spectroscopic assays augmented by directed mutagenesis. Spectroscopic changes, attributable to dimer interface conformational plasticity, were observed upon dimerization of Kaposi's sarcoma-associated herpesvirus prote...

journal_title：Biochemistry

authors： Pray TR,Reiling KK,Demirjian BG,Craik CS

更新日期：2002-02-05 00:00:00

abstract：:NAD(P)H:quinone oxidoreductase 1 (NQO1) is currently an emerging target in pancreatic cancer. In this report, we describe a series of indolequinones, based on 5-methoxy-1,2-dimethyl-3-[(4-nitrophenoxy)methyl]indole-4,7-dione (ES936), and evaluate NQO1 inhibition and growth inhibitory activity in the human pancreatic M...

journal_title：Biochemistry

authors： Reigan P,Colucci MA,Siegel D,Chilloux A,Moody CJ,Ross D

更新日期：2007-05-22 00:00:00