High impact information on Asterias

• When Pisaster, Asterias, or Thyone sperm are treated with the ionophore A23187 or X537A, an acrosomal reaction similar but not identical to a normal acrosomal reaction is induced in all the sperm [1].
• In this study we report the characterization of an IL-1-like protein from the starfish Asterias forbesi [2].
• Isolation and characterization of a primitive interleukin-1-like protein from an invertebrate, Asterias forbesi [2].
• Maturation was induced in Asterias oocytes with 1-methyladenine (1-MA) at a final concentration of 2 microM [3].
• The conversion of cholest-5-en-3beta-ol into cholest-7-en-3beta-ol by the echinoderms Asterias rubens and Solaster papposus [4].

Biological context of Asterias

• The levels of two steroids, asterone 1 and asterogenol 4, obtained by hydrolysis of the crude asterosaponin mixture from the starfish Asterias vulgaris, were highest in winter and spring, then the steroid levels fell to their annual minima in July, after the spawning period [5].

Anatomical context of Asterias

• Translationally mediated changes in the patterns of protein synthesis occur when meiotic maturation of oocytes of Asterias forbesi is induced by 1-methyladenine [6].
• Analysis of monosaccharides, fatty constituents and rare O-acetylated sialic acids from gonads of the starfish Asterias rubens [7].
• We have used a specific antiserum raised against GABA to demonstrate GABA-like immunoreactivity in the radial nerve cord (RNC), tube feet and the digestive system of the asteroid Asterias rubens [8].
• NADPH-, NADH- and cumene hydroperoxide-dependent metabolism of benzo[a]pyrene by pyloric caeca microsomes of the sea star Asterias rubens L. (Echinodermata: Asteroidea) [9].
• Water soluble diatom extracts and the diatom aldehyde 2-trans,4-trans decadienal were assayed on the gametes and embryos of the broadcast spawning polychaetes Arenicola marina and Nereis virens and the echinoderms Asterias rubens and Psammechinus miliaris [10].

Associations of Asterias with chemical compounds

• Sterol biosynthesis in the echinoderm Asterias rubens [11].
• 1. The echinoderms Asterias rubens and Solaster papposus (Class Asteroidea) metabolize injected [4(-14)C]cholest-5-en-3beta-ol to produce labelled 5alpha-cholestan-3beta-ol and 5alpha-cholest-7-en-3beta-ol [4].
• Estimation of a steroid released from the crude saponins of the starfish, Asterias vulgaris, by solvolysis: seasonal and geographic abundance [12].
• The biosynthesis of 8-O-methylated sialic acids in the starfish Asterias rubens--isolation and characterisation of S-adenosyl-L-methionine:sialate-8-O-methyltransferase [13].
• In the starfish, Asterias amurensis, ARIS is a sulfated glycoprotein of an apparent molecular size of greater than 10(7) [14].

Gene context of Asterias

• Characterization of an IL-1 receptor from Asterias forbesi coelomocytes [15].
• Characterization of an IL-6-like molecule from an echinoderm (Asterias forbesi) [16].
• Here we report the complete mature protein sequence and cDNA sequence of the lysozyme from Asterias [17].
• Cloning and expression of a membrane-bound CMP-N-acetylneuraminic acid hydroxylase from the starfish Asterias rubens [18].
• The first neuropeptides to be identified in echinoderms were two related peptides isolated from Asterias rubens known as SALMFamide-1 (S1) and SALMFamide-2 (S2) [19].

Analytical, diagnostic and therapeutic context of Asterias

• The starfish Asterias rubens contains a soluble sialidase (1.4 mU/mg homogenate protein), which was purified over 500-fold to apparent homogeneity by ammonium sulfate precipitation, gel filtration and affinity chromatography on immobilized 2-deoxy-2,3-didehydroneuraminic acid [20].
• 1. The polyamines spermine, spermidine and putrescine were extracted from tissues of Asterias vulgaris and quantitated using thin layer chromatography [21].

References