HOE 140 (D-Arg-[Hyp3, Thi5, D-Tic7, Oic8]bradykinin, a new B2 antagonist, was compared to R-493 (D-Ar[Hyp3-D-Phe7, Leu8]bradykinin) with respect to inhibition of the responses of seven isolated smooth muscle preparations to bradykinin. R-493 was found to exert: (a) high antagonistic activity on ...
A gene encoding an enantioselective amidase (KamH) was cloned from Klebsiella oxytoca KCTC 1686 and inserted into the EcoRI and HindIII sites of the vector pET-30a(+). When KamH with a peptide containing a His-tag and an enterokinase cleavage site was overexpressed in Escherichia coli, approxima...
Mycolyl-arabinogalactan-peptidoglycan (mAGP) is the major content of the mycobacterium cell wall structure and essential for mycobacterial survival. Peptidoglycan (PG) plays an important role in maintenance of cell division, cell wall integrity and pathogenesis. Mycobacterium smegmatis MSMEG_628...
A R-stereospecific amidase was purified from Brevibacterium epidermidis ZJB-07021 and characterized in detail. The amidase was purified to homogeneity by three chromatographic steps for up to 328.9-fold with specific activity of 31.9 U mg1. The enzyme was a homodimer with a molecular mass of 94...
BackgroundAngioedema diagnosis classically targets the complement system (via C1 inhibitor (C1Inh) function and antigenic C4 level) and contact phase activation (via amidase activity). Bradykinin is responsible for angioedema attacks and is produced from contact phase activation secondary to fai...
Here we describe the partial purification of the enzyme from the flavedo of orange fruits and discuss results of a detailed study of the substrate range of the peptide amidase, which is extremely wide and useful for a C-terminal enzymatic deprotection in peptide synthesis under very mild conditi...
SummaryMycobacterium tuberculosis, the causative agent of tuberculosis, withstands diverse environmental stresses in the host. The periplasmic protease HtrA is required only to survive extreme conditions in most bacteria but is predicted to be essential for normal growth in mycobacteria. We conf...
Amidase signature (AS) family amidases are known to exhibit broad substrate specificity. According to the available genome sequence data, a novel AS family amidase, Pl-Ami, was identified and cloned from the genome of Parvibaculum lavamentivorans ZJB14001. The recombinant amidase was overexpress...
A bacterial strain, Paracoccus sp. SKG, capable of utilizing aliphatic nitriles as a sole source of carbon and nitrogen was isolated. Degradation of nitriles follows a bi-enzymatic pathway with the successive action of nitrile hydratase (NHase) and amidase. The inducible enzyme, amidase from cel...
Directed peptides C-terminal modification enabled by the engineered biomolecular catalyst – peptide amidase 12B has been achieved via computational protein engineering. The engineered enzyme exhibits great promising potential in the C-terminal modification of opioid peptides using prop-2-yn-1-a...
Publisher SummaryThis chapter discusses the characterization of the predominant factors that govern the liver synthesis of plasma proteins. The cytokines are known to influence the levels of plasma proteins. The cytokines stimulate the commencement of the acute-phase reaction in the liver, resul...
Serum α-fetoprotein (AFP) levels in hepatocellular carcinoma (HCC) patients and expression of the protein in cultured HCC cell lines are highly variable. These observations may arise from features correlated with tissue-specific expression of the gene. Extremely strong and potent liver-specific...
SummaryHepatitis B virus (HBV) is a hepatotropic virus and its gene expression is highly liverspecific. It has been reported that the function of enhancer II (ENII) and the core promoter (Cp) of HBV has a hepatocyte preference. To understand the effects of liver-specific nuclear factors on ENII,...
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disorder that is closely associated with insulin resistance and type 2 diabetes. Previous studies have suggested that hepatocyte nuclear factor 1b (HNF1b) ameliorates insulin resistance. However, the role of HNF1b in the r...
Ferroptosis is a new form of nonapoptotic programmed cell death characterized by iron-dependent accumulation of lipid hydroperoxides to lethal levels. An increasing number of studies have in recent years revealed close relationships between ferroptosis and nanomedicine, which has been regarded a...
Hepatocyte nuclear factor 1 (HNF1) is a dimeric homeoprotein expressed in hepatocytes and in a few other epithelial cells where it helps regulate the expression of a specific subset of genes. In an attempt to identify novel target genes for HNF1 and to assess the distribution of its target sites...
The transcription factor hepatocyte nuclear factor 1β (HNF1β) is ubiquitously overexpressed in ovarian clear cell carcinoma (CCC) and is a potential therapeutic target. To explore potential approaches that block HNF1β transcription we have identified and characterised extensively the nuclear ...
Liver-specific gene expression is regulated by four families of transcriptional activatory proteins that are not liver-specific, but are still restricted to a subset of tissues. The current opinion is that liver-specificity is a consequence of the combinatorial action of these factors, which cou...
Evolutionary related multisubunit RNA polymerases (RNAPs) transcribe the genomes of all living organisms. Whereas the core subunits of RNAPs are universally conserved in all three domains of life—indicative of a common evolutionary descent—this only applies to one RNAP-associated transcription...
SummaryActivation-induced cytidine deaminase (AID) initiates antibody gene diversification by creating U:G mismatches. However, AID is not specific for antibody genes; Off-target lesions can activate oncogenes or cause chromosome translocations. Despite its importance in these transactions littl...
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