(1) This work extends the finding of proctolin-like substances to the annelid phylum.
(2) The microsporidia are a group of unusual, obligately parasitic protists that infect a great variety of other eukaryotes, including vertebrates, arthropods, molluscs, annelids, nematodes, cnidaria and even various ciliates, myxosporidia and gregarines.
(3) These annelids which destroy the larval stages of Fasciola hepatica have been observed in the laboratory.
(4) These include insects, chelicerates, most crustaceans, annelids, priapulids, nematodes, and some sipunculids.
(5) Such a pattern of subunit aggregation has not been observed previously in annelid extracellular hemoglobins and chlorocruorins.
(6) This characteristic distribution of the various neuron subgroups and fiber pathways may represent functional circuits within the nervous system of this annelid.
(7) The emonctory structures, functions and stereotype and their component parts are studied in protists, spongia, coelenterata and coelomata: lower worms, annelids, their hyponeurian descendents (arthropods, molluses) and epineurian descedents echinoderms and protochordates (Stomochordata, Tunicata, Cephalochordata).
(8) Only the position of the mitochondria, inserted between nucelus and axoneme, is reminiscent of annelid features.
(9) The amino acid sequences of the two variants (H1a 121 residues and H1b 119 residues) of the sperm-specific histone H1 from the polychaete annelid Platynereis dumerilii have been completely established.
(10) Biochemical assays of adenylate cyclase activity were performed during the early phases of regeneration in Owenia fusiformis (Polychaete Annelid).
(11) The pattern and degree of accumulation was essentially complete within 2 years after the initial operation of the power plant, and persisted throughout the remainder of the study: fishes greater than insects greater than annelids greater than molluscs greater than crustaceans greater than plankton greater than periphyton.
(12) In this paper we described a third type of repeat isolated from the genome of a Polychaete annelid: Owenia fusiformis.
(13) A hypothesis is proposed in order to explain the differences observed between biochemical and present results, which suggest, for the hardening of cements a different chemical mechanism to that suggested by Vovelle in annelid Sabellaria alveolata.
(14) Experiments were conducted to assess the relationship between annelid age and susceptibility of the annelid as an intermediate host for a caryophyllaeid, as well as the effect a mixed-species infection has on rate of metacestode development and parasite mortality.
(15) We conclude that all annelid extracellular haemoglobins and chlorocruorins which have the same dimensions as Lumbricus haemoglobin probably have the same mol.
(16) ht-en protein, an annelid homolog of the Drosophila engrailed protein, is expressed during both early development and neurogenesis in embryos of the leech, Helobdella triserialis.
(17) Dialyzed extracts of one of these annelids, Lanice conchilega, show activity in the retentate after pronase digestion, suggesting that antitumor activity is associated with a nonprotein component of the crude tentacle extract.
(18) The sequences of nine chains of annelid giant hemoglobins were compared separately in the functionally essential central exonic region and structurally essential side exonic regions, and a phylogenetic tree was constructed.
(19) In embryos of the glossiphoniid leech, Helobdella triserialis, as in many annelids, cytoplasmic reorganization prior to first cleavage generates distinct animal and vegetal domains of yolk-deficient cytoplasm, called teloplasm.
(20) A marked increase in the abundance of the annelid Polydora ligni in aquariums containing sand and flowing estuarine water was altered in the presence of the carbamate insecticide Sevin (carbaryl).
Gizzard
Definition:
(n.) The second, or true, muscular stomach of birds, in which the food is crushed and ground, after being softened in the glandular stomach (crop), or lower part of the esophagus; the gigerium.
(n.) A thick muscular stomach found in many invertebrate animals.
(n.) A stomach armed with chitinous or shelly plates or teeth, as in certain insects and mollusks.
Example Sentences:
(1) Using a tropomyosin-coupled affinity column, we have demonstrated a direct association between the chymotryptic 35 kDa fragment of h-caldesmon, which is located at the C-terminal of the parent molecule, and gizzard tropomyosin.
(2) Several studies of vinculin-binding proteins have described a 190 kDa protein in chicken gizzard smooth muscle which binds radioiodinated vinculin.
(3) Ca-activated hydrolysis of ATP catalyzed by gizzard myosin B proceeded at a reduced rate after removal of Ca2+ (by adding EGTA), whereas that catalyzed by a combination of actin, gizzard myosin, and gizzard NTM proceeded at the same rate even after removal of Ca2+.
(4) In Western blot experiments, CGA7 detected actin from chicken gizzard and monkey ileum, but not skeletal muscle or fibroblast actin.
(5) We also show here for the first time that the S1-S2 junction in gizzard myosin can be cleaved by chymotrypsin and that this cleavage (observed in papain-produced S1 devoid of the regulatory light chain) is also temperature-dependent but insensitive to nucleotides and actin.
(6) Arginine residues of gizzard myosin are necessary for the maintenance of the ATPase activity of this contractile protein.
(7) Using thiophosphorylated gizzard myosin, Sherry et al.
(8) One method consisted of examination of gizzards from mallards shot by hunters (n = 2,859) and the other method consisted of examination of gizzards from mallards caught in duck traps (n = 865).
(9) The length of small intestine, large intestine and caeca and the weight of gizzard expressed per kg of body weight increased with an increase in the level of carob pods meal, which is rich in fibre, in the diets.
(10) These calpastatins possessed the same inhibition properties when assayed with chicken gizzard calpains.
(11) Caldesmon, a major actin- and calmodulin-binding protein, has been identified in diverse bovine tissues, including smooth and striated muscles and various nonmuscle tissues, by denaturing polyacrylamide gel electrophoresis of tissue homogenates and immunoblotting using rabbit anti-chicken gizzard caldesmon.
(12) Significant lesions are confined to the proventriculus which becomes inflamed, dilated and ulcerated, and loses its normal architecture, and to the gizzard in which there are degenerative changes in the koilin layer.
(13) The enzyme purified from human platelets phosphorylates the 20 000-dalton light chain of mouse fibroblast and chicken gizzard myosin, but does not phosphorylate human skeletal and cardiac myosin.
(14) An investigation was conducted on the histology and chemical nature of the inner lining of the gizzard of a fish-eating bird Pelecanus phillippensis.
(15) The association constant of the arterial enzyme to F-actin (5.1 X 10(6) M-1) was much larger than that of the gizzard enzyme (9.0 X 10(5) M-1) but the maximum binding was the same (1 enzyme per 12-13 actins).
(16) We investigated the presence of dystrophin in gizzard smooth muscle by immunofluorescence assay, immunoblot detection and an immunogold electron microscopy technique.
(17) CB-a encompasses the COOH-terminal segment of residues 659-756, according to the sequence of adult chicken gizzard caldesmon (Bryan, J., Imai, M., Lee, R., Moore, P., Cook, R.G., and Lin, W.G.
(18) The results presented here suggest the participation of the 18 kDa peptide in the nucleotide binding domain of gizzard myosin.
(19) Leaves collected from the gizzard were identified as coast live oak (Quercus agrifolia).
(20) The only difference we observed was that the Ca- and EDTA-ATPase activities of gizzard myosin were, as reported by other investigators, approximately one-half to one-third of those of skeletal myosin, although the pH-activity profiles for the ATPase of gizzard myosin was essentially the same as that of skeletal myosin.