Abstract:
:Nonribosomal peptide synthetases (NRPSs) are megasynthetases that require complex and specific interactions between multiple domains and proteins to functionally produce a metabolite. MbtH-like proteins (MLPs) are integral components of many NRPSs and interact directly with the adenylation domain of the megasynthetases to stimulate functional enzymology. All of the MLP residues that are essential for functional interactions between the MLP and NRPS have yet to be defined. Here we probe the interactions between YbdZ, an MLP, and EntF, an NRPS, from Escherichia coli by performing a complete alanine scan of YbdZ. A phenotypic screen identified 11 YbdZ variants that are unable to replace the wild-type MLP, and these YbdZ variants were characterized using a series of in vivo and in vitro assays in an effort to explain why functional interactions with EntF were disrupted. All of the YbdZ variants enhanced the solubility of overproduced EntF, suggesting they were still capable of direct interactions with the megasynthase. Conversely, we show that EntF also influences the solubility of YbdZ and its variants. In vitro biochemical analyses of EntF function with each of the YbdZ variants found the impact that an amino acid substitution will have on NRPS function is difficult to predict, highlighting the complex interaction between these proteins.
journal_name
Biochemistryjournal_title
Biochemistryauthors
Schomer RA,Park H,Barkei JJ,Thomas MGdoi
10.1021/acs.biochem.8b00552subject
Has Abstractpub_date
2018-07-17 00:00:00pages
4125-4134issue
28eissn
0006-2960issn
1520-4995journal_volume
57pub_type
杂志文章相关文献
BIOCHEMISTRY文献大全abstract::The inactivation of cytochrome P450 2B4 by aldehydes in a reconstituted enzyme system requires molecular oxygen and NADPH and is not prevented by the addition of catalase, superoxide dismutase, epoxide hydrolase, glutathione, or ascorbic acid. A strong correlation between loss of enzymatic activity and bleaching of th...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi9630568
更新日期:1997-04-22 00:00:00
abstract::In cerebellum, inositol trisphosphate- (InsP(3)-) gated Ca channels play a key role in learning, though they exhibit a low sensitivity to InsP(3) compared to peripheral tissues. In the present study, the cerebellar InsP(3) receptor is shown to be associated with a novel inhibitor of InsP(3) binding. (3)H-InsP(3) bindi...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi992175v
更新日期:2000-03-28 00:00:00
abstract::The first epidermal growth factor-like domain (EGF-1) from blood coagulation factor VII (FVII) contains two unusual O-linked glycosylation sites at Ser-52 and Ser-60. We report here a detailed study of the effect of O-fucosylation at Ser-60 on the structure of FVII EGF-1, its Ca2+-binding affinity, and its interaction...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi990234z
更新日期:1999-06-01 00:00:00
abstract::Oligodeoxyribonucleotides 8-12 nucleotides in length whose sequences are complementary to the 5' end, the initiation codon regions, or the coding regions of rabbit globin mRNA were tested for their ability to inhibit translation in a rabbit reticulocyte lysate and in a wheat germ extract. The oligomers interact specif...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00343a015
更新日期:1985-10-22 00:00:00
abstract::We have labeled the primer binding domain of murine leukemia virus reverse transcriptase (MuLV RT) by covalently cross-linking 5' end labeled d(T)8 to MuLV RT, using ultraviolet light energy. The specificity and the functional significance of the primer cross-linking reaction were demonstrated by the fact that (i) oth...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00240a014
更新日期:1991-07-02 00:00:00
abstract::Nitric oxide is produced in mammals by the nitric oxide synthase (NOS) isoforms at a catalytic site comprising a heme associated with a biopterin cofactor. Through genome sequencing, proteins that are highly homologous to the oxygenase domain of NOSs have been identified, in particular in bacteria. The active site is ...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/acs.biochem.6b01018
更新日期:2017-02-07 00:00:00
abstract::G-Actin is a globular protein (Mr 42 300) known to have three cysteine residues that are at least partially exposed and chemically reactive (Cys-10, -284, and -374). When G-actin was reacted with 3-bromo-1,1,1-trifluoropropanone, three resolvable 19F resonances were observed in the 19F NMR spectrum. This fluorinated G...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00356a050
更新日期:1986-04-22 00:00:00
abstract::Pf1, a class II filamentous virus, has been investigated by ultraviolet resonance Raman (UVRR) spectroscopy with excitation wavelengths of 257, 244, 238, and 229 nm. The 257-nm UVRR spectrum is rich in Raman bands of the packaged single-stranded DNA (ssDNA) genome, despite the low DNA mass (6%) of the virion. Converse...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi981965m
更新日期:1999-03-09 00:00:00
abstract::His12 and His119 are critical for catalysis of RNA cleavage by ribonuclease A (RNase A). Substitution of either residue with an alanine decreases the value of k(cat)/K(M) by more than 10(4)-fold. His12 and His119 are proximal to the scissile phosphoryl group of an RNA substrate in enzyme-substrate complexes. Here, the...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi0100182
更新日期:2001-04-24 00:00:00
abstract::The occupancy of the central cavity of the membrane-embedded c ring of the ATP synthase of Escherichia coli was investigated with a photo-cross-linking approach. Single cysteine mutants were created at c subunit positions 4, 8, and 11, which are oriented to the inside of the ring. These cysteines were alkylated with r...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi052304+
更新日期:2006-02-14 00:00:00
abstract::PhoR of Bacillus subtilis is a histidine sensor-kinase belonging to the family of two-component signal transduction systems. PhoR is responsible for processing the phosphate-starvation signal and providing phosphate input to regulate the level of phosphorylated response regulator, PhoP, which activates/represses Pho r...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi990658t
更新日期:1999-08-03 00:00:00
abstract::Monte Carlo protein simulations with continuum solvation were used to explore the conformational mobility of NO within the active site of metmyoglobin. To the best of our knowledge this is the first application of a continuum solvation model for exploring protein binding sites. The usefulness of the Monte Carlo confor...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi981611v
更新日期:1999-05-18 00:00:00
abstract::CytA is a member of a functionally defined family of insecticidal delta-endotoxins occurring in parasporal crystals of Bacillus thuringiensis var. israelensis. We investigated the ability of CytA to permeabilize the membrane and release fluorescence marker molecules from unilamellar lipid vesicles. Both protoxin (27 k...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi960970s
更新日期:1996-09-03 00:00:00
abstract::In addition to its superoxide dismutase (SOD) activity, Cu,Zn-superoxide dismutase (CuZnSOD) catalyzes the reductive decomposition of S-nitroso-L-glutathione (GSNO) in the presence of thiols such as L-glutathione (GSH). The GSNO-reductase activity but not the superoxide dismutase (SOD) activity of CuZnSOD is inhibited...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi061077o
更新日期:2006-10-24 00:00:00
abstract::The effects of nearest neighbor interactions between a nucleotide base at the primer 3'-terminus and an incoming deoxyribonucleoside triphosphate on DNA polymerase catalyzed insertion were examined. Kinetics of inserting the fluorescent nucleotide analog 2-aminopurine deoxyribonucleotide (dAPMP) and dAMP opposite a te...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00092a039
更新日期:1993-10-19 00:00:00
abstract::Oxindolealanine-62 lysozyme, formed by reaction with N-bromosuccinimide and purified by using affinity chromatography, was examined in its binding of homologous oligosaccharides of N-acetylglucosamine and in its catalysis of hydrolysis and of transglycosylation of the hexasaccharide of N-acetylglucosamine. Equilibrium...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00558a022
更新日期:1980-08-19 00:00:00
abstract::Sulfolobus solfataricus P2 DNA polymerase IV (Dpo4) is a thermostable archaeal enzyme and a member of the error-prone and lesion-bypass Y-family. In this paper, for the first time, the fidelity of a Y-family polymerase, Dpo4, was determined using pre-steady-state kinetic analysis of the incorporation of a single nucle...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi0357457
更新日期:2004-02-24 00:00:00
abstract::The tiny picoalga, Ostreococcus tauri, originating from the Thau Lagoon is a member of the marine phytoplankton. Because of its highly reduced genome and small cell size, while retaining the fundamental requirements of a eukaryotic photosynthetic cell, it became a popular model organism for studying photosynthesis or ...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/acs.biochem.8b01200
更新日期:2019-04-09 00:00:00
abstract::1H NMR spectroscopy of the isotropically shifted signals in cobalt carboxypeptidase, CoCPD, permits a direct and selective detection of protons belonging to the residues liganded to the metal. The chemical shift of these protons in the free enzyme and enzyme-inhibitor complexes with changing pH monitors the state of i...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00130a015
更新日期:1992-04-21 00:00:00
abstract::Acyl carrier protein (ACP) is a cofactor in a variety of biosynthetic pathways, including fatty acid metabolism. Thus, it is of interest to determine structures of physiologically relevant ACP-fatty acid complexes. We report here the NMR solution structures of spinach ACP with decanoate (10:0-ACP) and stearate (18:0-A...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi052062d
更新日期:2006-04-25 00:00:00
abstract::By limited proteolysis of a type kappa immunoglobulin light chain (Oku) with clostripain, both the VL and CL fragments were obtained with a high yield. The unfolding and refolding by guanidine hydrochloride of light chain Oku and its VL and CL fragments were studied at pH 7.5 and 25 degrees C with circular dichroism a...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00393a015
更新日期:1987-09-22 00:00:00
abstract::Ultraviolet irradiation of DNA results in various pyrimidine modifications. We studied the excision of an ultraviolet thymine photoproduct by Escherichia coli endonuclease III and by a preparation of human WI-38 cells. These enzymes cleave UV-irradiated DNA at apyrimidinic sites formed by glycosylic removal of the pho...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00483a009
更新日期:1990-08-07 00:00:00
abstract::Pyruvate phosphate dikinase catalyzes the interconversion of adenosine 5'-triphosphate (ATP), orthophosphate (P(i)), and pyruvate with adenosine 5'-monophosphate (AMP), pyrophosphate (PP(i)), and phosphoenolpyruvate (PEP). The Arg 561 residue of Clostridium symbiosum PPDK is contained within a Gly-rich stretch of sequ...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00007a012
更新日期:1995-02-21 00:00:00
abstract::PDZ domains are among the most abundant protein modules in the known genomes. Their main function is to provide scaffolds for membrane-associated protein complexes by binding to the cytosolic, C-terminal fragments of receptors, channels, and other integral membrane proteins. Here, using both heteronuclear NMR and sing...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi052225y
更新日期:2006-03-21 00:00:00
abstract::While calcium binding to troponin C (TnC) triggers the contraction of both skeletal and cardiac muscle, there is clear evidence that different mechanisms may be involved. For example, activation of heart myofilaments occurs with binding to a single regulatory site on TnC, whereas activation of fast skeletal myofilamen...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi971223d
更新日期:1997-10-07 00:00:00
abstract::Aquifex aeolicus 3-deoxy-d-manno-octulosonate 8-phosphate synthase (KDO8PS) is active with a variety of different divalent metal ions bound in the active site. The Cd(2+), Zn(2+), and Cu(2+) substituted enzymes display similar values of k(cat) and similar dependence of K(m)(PEP) and K(m)(A5P) on both substrate and pro...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi801955h
更新日期:2009-04-28 00:00:00
abstract::Insulin-stimulated glucose disposal in skeletal muscle proceeds predominantly through a nonoxidative pathway with glycogen synthase as a rate-limiting enzyme, yet the mechanisms for insulin activation of glycogen synthase are not understood despite years of investigation. Isolation of putative insulin second messenger...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi0508845
更新日期:2005-08-23 00:00:00
abstract::We have used flash-detection optical and electron paramagnetic resonance spectroscopy to measure the kinetics and yield per flash of the photooxidation of cytochrome b559 and the yield per flash of the photooxidation of the tyrosine residue YD in Mn-depleted photosystem II (PSII) membranes at room temperature. The ini...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00490a014
更新日期:1990-09-25 00:00:00
abstract::Currently, the relatively high cost of enzymes such as glycoside hydrolases that catalyze cellulose hydrolysis represents a barrier to commercialization of a biorefinery capable of producing renewable transportable fuels such as ethanol from abundant lignocellulosic biomass. Among the many families of glycoside hydrol...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi100009p
更新日期:2010-04-20 00:00:00
abstract::Initial rate kinetic studies and reduced coenzyme binding studies with bovine glutamate dehydrogenase have shown that an enzyme-NAD(P)H-glutamate abortive complex is a major participant in the overall enzyme-catalyzed reaction. The allosteric regulator ADP is shown to activate the enzyme by destabilizing this abortive...
journal_title:Biochemistry
pub_type: 杂志文章
doi:10.1021/bi00567a017
更新日期:1980-12-23 00:00:00