anemone apennina/arginina

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Cooperativity in the two-domain arginine kinase from the sea anemone Anthopleura japonicus.

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cDNAs of the two-domain arginine kinase (AK) (contiguous dimer; denoted by 2D/WT) and its separated domains 1 and 2 (denoted by D1/WT and D2/WT) from the sea anemone Anthopleura japonicus, were cloned into the plasmid pMAL, and recombinant enzymes were expressed in E. coli as MBP fusion proteins.

Cooperativity in the two-domain arginine kinase from the sea anemone Anthopleura japonicus. II. Evidence from site-directed mutagenesis studies.

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The arginine kinase (AK) from the sea anemone Anthopleura japonicus has an unusual two-domain structure (contiguous dimer; denoted by D1-D2). In a previous report, we suggested cooperativity in the contiguous dimer, which may be a result of domain-domain interactions, using MBP-fused enzymes. To

Evolution of phosphagen kinase. Isolation, characterization and cDNA-derived amino acid sequence of two-domain arginine kinase from the sea anemone Anthopleura japonicus.

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Arginine kinase (AK) was isolated from the body wall muscle of the primitive sea anemone Anthopleura japonicus by Ultrogel AcA34 gel filtration, DEAE-32 chromatography and elution on a Cosmogel-SP column. The denatured molecular mass as determined with SDS/PAGE was 80 kDa, twice that of the usual AK

A diverse array of creatine kinase and arginine kinase isoform genes is present in the starlet sea anemone Nematostella vectensis, a cnidarian model system for studying developmental evolution.

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Phosphagen (guanidino) kinases (PK) constitute a family of homologous phosphotransferases catalyzing the reversible transfer of the high-energy phosphoryl group of ATP to naturally occurring guanidine compounds. Prior work has shown that PKs can be phylogenetically separated into two distinct

Modification of arginine in sea anemone toxin RTX-III from Radianthus macrodactylus.

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Chemical modifications of the polypeptide neurotoxin RTX-III have allowed us to study the functional role of Arg residues. The effect of chemical modification has been estimated by measuring toxicity in mice. 2,4-Pentanedione did not react with Arg residues of RTX-III even after 100 hr incubation.

Purification and some properties of ATP: arginine phosphotransferase from sea anemones, Condylactis aurantiaca.

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Triterpenoid Saponins from Anemone flaccida Suppress Tumor Cell Proliferation by Regulating MAPK, PD1/PDL1, and STAT3 Signaling Pathways and Altering Cancer Metabolism.

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Purpose

Natural triterpenoid saponins isolated from Anemone flaccida Fr. Schmidt have exhibited anti-cancer properties and exerted remarkable inhibitory effects on tumor growth. Herein, we investigated the potential mechanism involved in the suppression of hepatocellular

APETx1 from sea anemone Anthopleura elegantissima is a gating modifier peptide toxin of the human ether-a-go-go- related potassium channel.

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We studied the mechanism of action and the binding site of APETx1, a peptide toxin purified from sea anemone, on the human ether-a-go-go-related gene (hERG) channel. Similar to the effects of gating modifier toxins (hanatoxin and SGTx) on the voltage-gated potassium (Kv) 2.1 channel, APETx1 shifts

Mitochondrial DNA of the sea anemone, Metridium senile (Cnidaria): prokaryote-like genes for tRNA(f-Met) and small-subunit ribosomal RNA, and standard genetic code specificities for AGR and ATA codons.

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The nucleotide sequence of a segment of the mitochondrial DNA (mtDNA) molecule of the sea anemone Metridium senile (phylum Cnidaria, class Anthozoa, order Actiniaria) has been determined, within which have been identified the genes for respiratory chain NADH dehydrogenase subunit 2 (ND2), the

Chemical modification of equinatoxin II, a lethal and cytolytic toxin from the sea anemone Actinia equina L.

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The role of arginine and tyrosine in cytolytic properties of equinatoxin II, isolated from the sea anemone Actinia equina L., was studied by means of chemical modifications. The toxin was modified with 2,3 butanedione and tetranitromethane, respectively. The extent of modification and

Avidin-FITC topological studies with three cysteine mutants of equinatoxin II, a sea anemone pore-forming protein.

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Equinatoxin II (EqtII) is a cysteinless pore-forming protein from sea anemone Actinia equina. Three cysteine mutants were produced in an E. coli expression system in order to study the topology of lysine 77, arginine 126, and alanine 179. Accessibility of an introduced thiol group in the water

AbeTx1 Is a Novel Sea Anemone Toxin with a Dual Mechanism of Action on Shaker-Type K⁺ Channels Activation.

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Voltage-gated potassium (KV) channels regulate diverse physiological processes and are an important target for developing novel therapeutic approaches. Sea anemone (Cnidaria, Anthozoa) venoms comprise a highly complex mixture of peptide toxins with diverse and selective pharmacology on KV channels.

Characterisation of nitric oxide synthase activity in the tropical sea anemone Aiptasia pallida.

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The presence of nitric oxide synthase (EC 1.14.23 NOS) activity is demonstrated in the tropical marine cnidarian Aiptasia pallida (Verrill). Enzyme activity was assayed by measuring the conversion of [3H]arginine to [3H]citrulline. Optimal NOS activity was found to require NADPH. Activity was

Expression of sea anemone equistatin in potato. Effects of plant proteases on heterologous protein production.

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Plants are increasingly used as production platforms of various heterologous proteins, but rapid protein turnover can seriously limit the steady-state expression level. Little is known about specific plant proteases involved in this process. In an attempt to obtain potato (Solanum tuberosum cv

A Low Molecular Weight Protein from the Sea Anemone Anemonia viridis with an Anti-Angiogenic Activity.

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Sea anemones are a remarkable source of active principles due to a decentralized venom system. New blood vessel growth or angiogenesis is a very promising target against cancer, but the few available antiangiogenic compounds have limited efficacy. In this study, a protein fraction, purified from

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