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68268

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Wenfei Song et al.
Virology, 471-473, 49-53 (2014-12-03)
Middle East respiratory syndrome coronavirus (MERS-CoV) infects host cells through binding the receptor binding domain (RBD) on its spike glycoprotein to human receptor dipeptidyl peptidase 4 (hDPP4). Here, we report identification of critical residues on hDPP4 for RBD binding and
Xu-Ying Wang et al.
Small (Weinheim an der Bergstrasse, Germany), 11(43), 5826-5832 (2015-10-01)
S-layer proteins create a cell-surface layer architecture in both bacteria and archaea. Because S-layer proteins self-assemble into a native-like S-layer crystalline structure in vitro, they are attractive building blocks in nanotechnology. Here, the potential use of the S-layer protein EA1
Sandeep K Ravala et al.
The FEBS journal, 282(8), 1419-1431 (2015-02-11)
Phosphorylation of the activation loop in the catalytic domain of the RD family of bacterial eukaryotic-type Ser/Thr protein kinases (STPK) induces their conformational transition from an inactive to active state. However, mechanistic insights into the phosphorylation-mediated transition of these STPKs
Emily Golden et al.
Analytical biochemistry, 485, 102-108 (2015-06-16)
Cholesterol oxidase (CO) is a FAD (flavin adenine dinucleotide) containing enzyme that catalyzes the oxidization and isomerization of cholesterol. Studies directed toward elucidating the catalytic mechanism of CO will provide an important general understanding of Flavin-assisted redox catalysis. Hydrogen atoms
Jintao Yang et al.
Langmuir : the ACS journal of surfaces and colloids, 31(33), 9125-9133 (2015-08-08)
Development of smart, multifunction materials is challenging but important for many fundamental and industrial applications. Here, we synthesized and characterized zwitterionic poly(3-(1-(4-vinylbenzyl)-1H-imidazol-3-ium-3-yl)propane-1-sulfonate) (polyVBIPS) brushes as ion-responsive smart surfaces via the surface-initiated atom transfer radical polymerization. PolyVBIPS brushes were carefully characterized
James R Kornacki et al.
ACS chemical biology, 10(1), 157-164 (2014-09-10)
Epigenetic regulation is directed, in part, by the correlated placement of histone post-translational modifications, but the mechanisms controlling correlated modifications are incompletely understood. Correlations arise from crosstalk among modifications and are frequently attributed to protein-protein interactions that recruit enzymes to
Tae-Hyoun Kim et al.
Cytokine, 71(2), 139-144 (2014-12-03)
As a potent immune regulator, heat shock protein 70 derived from Mycobacterium tuberculosis (Mtb Hsp70) has adjuvant effect and activates immune cells such as macrophages and dendritic cells (DCs). Although Toll-like receptors (TLRs) are known to involve in DCs activation
Richard C Silva et al.
PloS one, 10(7), e0131070-e0131070 (2015-07-16)
The Saccharomyces cerevisiae protein Yih1, when overexpressed, inhibits the eIF2 alpha kinase Gcn2 by competing for Gcn1 binding. However, deletion of YIH1 has no detectable effect on Gcn2 activity, suggesting that Yih1 is not a general inhibitor of Gcn2, and
Stephan Benke et al.
Nature communications, 6, 6198-6198 (2015-02-06)
Pore-forming toxins are protein assemblies used by many organisms to disrupt the membranes of target cells. They are expressed as soluble monomers that assemble spontaneously into multimeric pores. However, owing to their complexity, the assembly processes have not been resolved
Huiming Peng et al.
Journal of molecular medicine (Berlin, Germany), 93(6), 675-689 (2015-01-27)
Pulmonary edema associated with increased vascular permeability is a severe complication of Staphylococcus aureus-induced sepsis and an important cause of human pathology and death. We investigated the role of the mammalian acid sphingomyelinase (Asm)/ceramide system in the development of lung
Julia Madrzak et al.
Nature communications, 6, 6718-6718 (2015-04-25)
Dishevelled relays Wnt signals from the plasma membrane to different cytoplasmic effectors. Its signalling activity depends on its DIX domain, which undergoes head-to-tail polymerization to assemble signalosomes. The DIX domain is ubiquitinated in vivo at multiple lysines, which can be
Yue-Cai Yin et al.
Chembiochem : a European journal of chemical biology, 15(16), 2443-2449 (2014-09-23)
A new member of the CYP116B subfamily-P450LaMO-was discovered in Labrenzia aggregata by genomic data mining. It was successfully overexpressed in Escherichia coli, purified, and subsequently characterized spectroscopically, and its catalytic properties were assessed. Substrate profiling of the P450LaMO revealed that
Jessica R Ingram et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(36), E4975-E4984 (2015-08-26)
Calcium-dependent protein kinases (CDPKs) comprise the major group of Ca2+-regulated kinases in plants and protists. It has long been assumed that CDPKs are activated, like other Ca2+-regulated kinases, by derepression of the kinase domain (KD). However, we found that removal
Moushumee Das et al.
Journal of virological methods, 225, 64-69 (2015-09-15)
Newcastle disease virus (NDV) is the causative agent of a highly contagious disease in avian species. All strains of NDV belong to avian paramyxovirus serotype-1. The disease is endemic in different parts of the world and vaccination is the only
Sonja Werwitzke et al.
Thrombosis and haemostasis, 114(6), 1127-1135 (2015-08-08)
Development of inhibitory antibodies against factor VIII (FVIII) is a severe complication of replacement therapy in haemophilia A. Patients with inhibitors are treated with high FVIII doses in the context of immune tolerance therapy (ITT). Data from haemophilia A mouse
James N Vranish et al.
Journal of the American Chemical Society, 137(1), 390-398 (2014-12-06)
Iron-sulfur (Fe-S) clusters are protein cofactors that are constructed and delivered to target proteins by elaborate biosynthetic machinery. Mechanistic insights into these processes have been limited by the lack of sensitive probes for tracking Fe-S cluster synthesis and transfer reactions.
Karen Stanger et al.
FEBS letters, 588(23), 4487-4496 (2014-12-03)
Cyclotides belong to the family of cyclic cystine-knot peptides and have shown promise as scaffolds for protein engineering and pharmacological modulation of cellular protein activity. Cyclotides are characterized by a cystine-knotted topology and a head-to-tail cyclic polypeptide backbone. While they
Vishwanatha Chandrahas et al.
The Journal of biological chemistry, 290(30), 18833-18842 (2015-06-14)
Streptokinase (SK), secreted by Group A Streptococcus (GAS), is a single-chain ∼47-kDa protein containing three consecutive primary sequence regions that comprise its α, β, and γ modules. Phylogenetic analyses of the variable β-domain sequences from different GAS strains suggest that
Sekar Tamil Selvi Chitradevi et al.
Cellular & molecular immunology, 12(6), 757-767 (2015-02-03)
Shigella species cause severe bacillary dysentery in humans and are associated with high morbidity and mortality. The Invasion plasmid antigen (IpaB) protein, which is conserved across all Shigella spp., induces macrophage cell death and is required to invade host cells.
Andrezza C Chagas et al.
PLoS neglected tropical diseases, 8(6), e2947-e2947 (2014-06-13)
Among the several challenges faced by bloodsucking arthropods, the vertebrate hemostatic response against blood loss represents an important barrier to efficient blood feeding. Here we report the first inhibitor of collagen-induced platelet aggregation derived from the salivary glands of a
Aleksanteri Aspelund et al.
The Journal of clinical investigation, 124(9), 3975-3986 (2014-07-26)
In glaucoma, aqueous outflow into the Schlemm's canal (SC) is obstructed. Despite striking structural and functional similarities with the lymphatic vascular system, it is unknown whether the SC is a blood or lymphatic vessel. Here, we demonstrated the expression of
Felix Bischoff et al.
Applied and environmental microbiology, 81(16), 5497-5510 (2015-06-07)
The genes ACUT1, ACUT2, and ACUT3, encoding cutinases, were selected from the genomic DNA of Arxula adeninivorans LS3. The alignment of the amino acid sequences of these cutinases with those of other cutinases or cutinase-like enzymes from different fungi showed
Xiao-Li Wang et al.
Protein expression and purification, 113, 30-34 (2015-05-13)
A highly efficient Escherichia coli expression system was established to obtain an appreciable quantity of antihypertensive peptide. The DNA-coding sequence for the Gly-Val-Tyr-Pro-His-Lys peptide was chemically synthesized and linked to form a ten-copy in tandem. It was cloned into the
Ching-Wen Lin et al.
Biomaterials, 34(17), 4387-4393 (2013-03-13)
Chemically modified antisense RNA oligonucleotides (antagomir) offer promise for cancer therapies but suffer from poor therapeutic effect after systemic administration. Chemical modification or loading in degradable hydrogels can offer improvements in the accuracy and efficacy for sustained delivery at specific
Hejun Liu et al.
The Biochemical journal, 462(3), 465-473 (2014-06-21)
Yeast Hif1 [Hat1 (histone acetyltransferase 1)-interacting factor], a homologue of human NASP (nuclear autoantigenic sperm protein), is a histone chaperone that is involved in various protein complexes which modify histones during telomeric silencing and chromatin reassembly. For elucidating the structural
Marlon Cowart et al.
Mini reviews in medicinal chemistry, 4(9), 979-992 (2004-11-17)
The H3 receptor is prominently expressed in neuronal tissues, and H3 antagonists have been proposed as drugs with benefits in disorders of cognition, attention, pain, allergic rhinitis, and obesity. The structure-activity relationships (SAR) of various classes of non-imidazole H3 antagonists
Tadanobu Takahashi et al.
Biological & pharmaceutical bulletin, 38(8), 1220-1226 (2015-08-04)
Cytidine monophosphate (CMP) N-acetylneuraminic acid (Neu5Ac) hydroxylase (CMAH) is an essential enzyme for N-glycolylneuraminic acid (Neu5Gc) synthesis. In humans, Neu5Gc cannot be synthesized because of a deletion in the CMAH gene. Since Neu5Gc research has not been actively performed in
Jennifer Munkert et al.
Molecular plant, 8(1), 136-152 (2015-01-13)
Catharanthus roseus, the Madagascar periwinkle, synthesizes bioactive monoterpenoid indole alkaloids, including the anti-cancer drugs vinblastine and vincristine. The monoterpenoid branch of the alkaloid pathway leads to the secoiridoid secologanin and involves the enzyme iridoid synthase (IS), a member of the
Sadanand D Sontakke et al.
Reproduction (Cambridge, England), 148(3), 271-283 (2014-06-13)
Several different miRNAs have been proposed to regulate ovarian follicle function; however, very limited information exists on the spatiotemporal patterns of miRNA expression during follicle development. The objective of this study was to identify, using microarray, miRNA profiles associated with
Magdalena A Bukowska et al.
Biochemistry, 54(19), 3086-3099 (2015-05-08)
ABC exporters are ubiquitous multidomain transport proteins that couple ATP hydrolysis at a pair of nucleotide binding domains to substrate transport across the lipid bilayer mediated by two transmembrane domains. Recently, the crystal structure of the heterodimeric ABC exporter TM287/288
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