Equilibrium folding studies of tetrameric R67 dihydrofolate reductase.

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：:Nonenzymatic deamidation of asparagine and glutamine in peptides and proteins is a frequent modification both in vivo and in vitro. The biological effect is not completely understood, but it is often associated with protein degradation and loss of biological function. Here we describe the deamidation of CsgA, the majo...

journal_title：Biochemistry

authors： Wang H,Shu Q,Frieden C,Gross ML

更新日期：2017-06-13 00:00:00

abstract：:Tripeptidyl peptidase II is a high molecular weight serine exopeptidase, which has been purified from rat liver and human erythrocytes. Four clones, representing 4453 bp, or 90% of the mRNA of the human enzyme, have been isolated from two different cDNA libraries. One clone, designated A2, was obtained after screening...

journal_title：Biochemistry

authors： Tomkinson B,Jonsson AK

更新日期：1991-01-08 00:00:00

abstract：:Mucopolysaccharides were isolated from calf cerebral microvasculature and calf aorta. The only complex carbohydrates that exhibited anticoagulant activity were heparin-like components. The biologic potencies of calf cerebral and aortic heparin-like species were 2.92 units/mg of anti-factor Xa activity and 2.85 units/m...

journal_title：Biochemistry

authors： Marcum JA,Rosenberg RD

更新日期：1984-04-10 00:00:00

abstract：:A method has been developed for calculating rate constants for dehydration of aldehydes that induce ATPase reactions by kinases and where 18O is transferred from the aldehyde or its hydrate to inorganic phosphate during the reaction. The method involves measurement of the fraction of 18O in phosphate by 31P NMR after ...

journal_title：Biochemistry

authors： Rendina AR,Hermes JD,Cleland WW

更新日期：1984-10-23 00:00:00

abstract：:The smooth muscle basic calponin interacts with F-actin and inhibits the actomyosin ATPase in a calmodulin or phosphorylation modulated manner. It also binds in vitro to microtubules and its acidic isoform, present in nonmuscle cells, and co-localizes with microfilaments and microtubules in cultured neurons. To assess...

journal_title：Biochemistry

authors： Fattoum A,Roustan C,Smyczynski C,Der Terrossian E,Kassab R

更新日期：2003-02-11 00:00:00

abstract：:Steady-state and femtosecond time-resolved optical methods have been used to compare the spectroscopic features and energy transfer dynamics of two systematically different light-harvesting complexes from the dinoflagellate Amphidinium carterae: main-form (MFPCP) and high-salt (HSPCP) peridinin-chlorophyll a-proteins....

journal_title：Biochemistry

authors： Ilagan RP,Koscielecki JF,Hiller RG,Sharples FP,Gibson GN,Birge RR,Frank HA

更新日期：2006-11-28 00:00:00

abstract：:Aminoimidazole riobnucleotide carboxylase, the sixth step in the purine biosynthetic pathway, catalyzes the conversion of aminoimidazole ribonucleotide (AIR) to carboxyaminoimidazole ribonucleotide (CAIR). The gene products of the purE and purK genes (PurE and PurK, respectively) thought to be responsible for this act...

journal_title：Biochemistry

authors： Meyer E,Leonard NJ,Bhat B,Stubbe J,Smith JM

更新日期：1992-06-02 00:00:00

abstract：:The ATP analogue 5'-[p-(fluorosulfonyl)benzoyl]adenosine (FSBA) was used to chemically modify the ATP binding sites of the carbamyl phosphate synthetase domain of CAD, the multifunctional protein that catalyzes the first steps in mammalian pyrimidine biosynthesis. Reaction of CAD with FSBA resulted in the inactivation...

journal_title：Biochemistry

authors： Kim HS,Lee L,Evans DR

更新日期：1991-10-22 00:00:00

abstract：:Chloride intracellular channel protein 1 (CLIC1) functions as an anion channel in plasma and nuclear membranes when its soluble monomeric form converts to an integral-membrane form. The transmembrane region of CLIC1 is located in its thioredoxin-like domain 1, but the mechanism whereby the protein converts to its memb...

journal_title：Biochemistry

authors： Stoychev SH,Nathaniel C,Fanucchi S,Brock M,Li S,Asmus K,Woods VL Jr,Dirr HW

更新日期：2009-09-08 00:00:00

abstract：:The two disparate functions of DCoH1 (dimerization cofactor of HNF-1)/PCD (pterin-4a-carbinolamine dehydratase) are associated with a change in oligomeric state. DCoH dimers enhance the activity of the diabetes-associated transcription factor HNF-1α (hepatocyte nuclear factor-1α), while the PCD activity of DCoH1 homot...

journal_title：Biochemistry

authors： Rho H,Jones CN,Rose RB

更新日期：2010-11-30 00:00:00

abstract：:An important but poorly characterized contribution to the thermodynamics of protein-DNA interactions is the loss of entropy that occurs from restricting the conformational freedom of amino acid side chains. The effect of restricting the flexibility of several side chains at a protein-DNA interface may be comparable in...

journal_title：Biochemistry

authors： Baird-Titus JM,Thapa M,Doerdelmann T,Combs KA,Rance M

更新日期：2018-05-15 00:00:00

abstract：:A procedure has been developed to purify foot and mouth disease virus (FMDV) VP1 surface antigens from recombinant Escherichia coli. The VP1 antigens are expressed as fusion proteins derived from the E. coli Trp operon and VP1 surface protein of FMDV. The procedure is capable of recovering greater than 96% of the desi...

journal_title：Biochemistry

authors： Shire SJ,Bock L,Ogez J,Builder S,Kleid D,Moore DM

更新日期：1984-12-18 00:00:00

abstract：:The recA locus of pathogenic mycobacteria differs from that of nonpathogenic species because it contains large intervening sequences nested in the RecA homology region that are excised by an unusual protein-splicing reaction. In vivo assays indicated that Mycobacterium tuberculosis recA partially complemented Escheric...

journal_title：Biochemistry

authors： Kumar RA,Vaze MB,Chandra NR,Vijayan M,Muniyappa K

更新日期：1996-02-13 00:00:00

abstract：:Kinetic and structural data are presented on the interaction with Torpedo californica acetylcholinesterase (TcAChE) of (+)-huperzine A, a synthetic enantiomer of the anti-Alzheimer drug, (-)-huperzine A, and of its natural homologue (-)-huperzine B. (+)-Huperzine A and (-)-huperzine B bind to the enzyme with dissociat...

journal_title：Biochemistry

authors： Dvir H,Jiang HL,Wong DM,Harel M,Chetrit M,He XC,Jin GY,Yu GL,Tang XC,Silman I,Bai DL,Sussman JL

更新日期：2002-09-03 00:00:00

abstract：:Nitrobenzamido ligands linked to the DNA intercalator 9-aminoacridine via poly(methylene) chains induce single-strand nicks in DNA upon irradiation with long-wavelength ultraviolet light (lambda greater than or equal to 300 nm). Optimal photocleavage activity was found for the reagent 9-[[6-(4-nitrobenzamido)hexyl]ami...

journal_title：Biochemistry

authors： Nielsen PE,Jeppesen C,Egholm M,Buchardt O

更新日期：1988-08-23 00:00:00

abstract：:Amino acid selective isotope labeling is an important nuclear magnetic resonance technique, especially for larger proteins, providing strong bases for the unambiguous resonance assignments and information concerning the structure, dynamics, and intermolecular interactions. Amino acid selective 15N labeling suffers fro...

journal_title：Biochemistry

authors： Sugiki T,Furuita K,Fujiwara T,Kojima C

更新日期：2018-07-03 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：:Cytochrome c6 from Monoraphidium braunii, an 89-amino acid electron transfer protein, has been investigated by NMR in solution, in its oxidized form, at pH 7 and 300 K. By using a combination of COSY, TOCSY, and NOESY experiments, 84% of the proton resonances have been assigned. A total of 1668 experimental NOE constr...

journal_title：Biochemistry

authors： Banci L,Bertini I,De la Rosa MA,Koulougliotis D,Navarro JA,Walter O

更新日期：1998-04-07 00:00:00

abstract：:Near-infrared FT-Raman spectroscopy can be used to measure the vibrations of the bacteriorhodopsin (bR) chromophore without the disadvantage of conventional visible resonance Raman spectroscopy, where the visible excitation drives the bR photoreactions. We utilized this technique to investigate the light-dark adaptati...

journal_title：Biochemistry

authors： Rath P,Krebs MP,He Y,Khorana HG,Rothschild KJ

更新日期：1993-03-09 00:00:00

abstract：:The initial steps of actomyosin subfragment 1 (acto-S1) ATPase (dissociation and binding of ATP) were studied at -15 degrees C with 40% ethylene glycol as antifreeze. The dissociation kinetics were followed by light scattering in a stopped-flow apparatus, and the binding of ATP was followed by the ATP chase method in ...

journal_title：Biochemistry

authors： Tesi C,Travers F,Barman T

更新日期：1990-02-20 00:00:00

abstract：:The seven serotypes (A-G) of botulinum neurotoxins (BoNTs) function through their proteolytic cleavage of one of three proteins (SNAP-25, Syntaxin, and VAMP) that form the SNARE complex required for synaptic vesicle fusion. The different BoNTs have very specific protease recognition requirements, between 15 and 50 ami...

journal_title：Biochemistry

authors： Arndt JW,Chai Q,Christian T,Stevens RC

更新日期：2006-03-14 00:00:00

abstract：:The UV endonucleases [endodeoxyribonuclease (pyrimidine dimer), EC 3.1.25.1] from Micrococcus luteus and bacteriophage T4 possess two catalytic activities specific for the site of cyclobutane pyrimidine dimers in UV-irradiated DNA: a DNA glycosylase that cleaves the 5'-glycosyl bond of the dimerized pyrimidines and an...

journal_title：Biochemistry

authors： Liuzzi M,Weinfeld M,Paterson MC

更新日期：1987-06-16 00:00:00

abstract：:We have purified and characterized a novel 30-kDa glycoprotein (gp30) with TGF alpha-like properties secreted from the estrogen receptor negative breast cancer cell line MDA-MB-231. This factor was immunoprecipitated by an anti-TGF alpha polyclonal antibody and also had TGF alpha-like biological activity, as assayed b...

journal_title：Biochemistry

authors： Lupu R,Wellstein A,Sheridan J,Ennis BW,Zugmaier G,Katz D,Lippman ME,Dickson RB

更新日期：1992-08-18 00:00:00

abstract：:Azotobacter vinelandii bacterioferritin (AvBF) containing 800-1500 Co or Mn atoms as Co(III) and Mn(III) oxyhydroxide cores (Co-AvBF, Mn-AvBF) was synthesized by the same procedure used previously for horse spleen ferritin (HoSF). The kinetics of reduction of Co-AvBF and Mn-AvBF by ascorbic acid are first-order in eac...

journal_title：Biochemistry

authors： Zhang B,Harb JN,Davis RC,Choi S,Kim JW,Miller T,Chu SH,Watt GD

更新日期：2006-05-09 00:00:00

abstract：:The thermotropic phase behavior of 10 mixed-chain phosphatidylcholines, in excess water, has been examined and compared with that of identical-chain C(16):C(16)PC by using high-resolution differential scanning calorimetry (DSC). The molecular weights (MW) of these 11 molecular species are the same, but their delta C/C...

journal_title：Biochemistry

authors： Bultmann T,Lin HN,Wang ZQ,Huang CH

更新日期：1991-07-23 00:00:00

abstract：:The molecular chaperones Hsp90 and Hsp70 are highly regulated by various cochaperones that participate in the activation of steroid receptors. Here we study Tpr2 (also called DjC7), a TPR domain-containing type III J protein implicated in steroid receptor chaperoning. We propose that Tpr2 plays a role in the Hsp90-dep...

journal_title：Biochemistry

authors： Moffatt NS,Bruinsma E,Uhl C,Obermann WM,Toft D

更新日期：2008-08-05 00:00:00

abstract：:Benzo[c]phenanthrene diol epoxide can covalently bind to the exocyclic amino group of deoxyadenosine to generate [BPh]dA adducts where the polycyclic aromatic hydrocarbon is attached to the major groove edge of DNA. This paper reports on NMR-energy minimization structural studies of the (+)-trans-anti-[BPh]dA adduct p...

journal_title：Biochemistry

authors： Cosman M,Fiala R,Hingerty BE,Laryea A,Lee H,Harvey RG,Amin S,Geacintov NE,Broyde S,Patel D

更新日期：1993-11-23 00:00:00

abstract：:To address the targeting of G protein-coupled receptors to caveolae-related lipid rafts (CLR), we studied the human B2 (B2R) and B1 (B1R) bradykinin receptor subtypes in HEK293 cells. CLR were enriched on the basis of their unique buoyant density and composition of cholesterol, caveolin-1, and flotillin-1 but not clat...

journal_title：Biochemistry

authors： Lamb ME,Zhang C,Shea T,Kyle DJ,Leeb-Lundberg LM

更新日期：2002-12-03 00:00:00

abstract：:Previous work from this laboratory has established that the NADPH-menadione oxidoreductase reaction catalyzed by methylenetetrahydrofolate reductase from pig liver proceeds by Ping Pong Bi Bi kinetics and that the reductive half-reaction is rate limiting in steady-state turnover. We have now shown that methylenetetrah...

journal_title：Biochemistry

authors： Vanoni MA,Matthews RG

更新日期：1984-10-23 00:00:00