Results 171 to 180 of about 2,790 (209)
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Presence of functional domains in Limulus polyphemus hemocyanin
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1990In an attempt to isolate structural domains of arthropod hemocyanins and possibly to investigate their functional properties, we have undertaken proteolytic digestion experiments of isolated subunits from Panulirus interruptus and Limulus polyphemus oxy-hemocyanin.
Z, Lello, G, Luca, B, Maurizio
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Structure and stability of arthropodan hemocyanin Limulus polyphemus
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2005In the hemolymph of many arthropodan species, respiratory copper proteins of high molecular weight, termed hemocyanins (Hcs) are dissolved. In this communication, we report on the protein stability of different hemocyanin species (Crustacea and Chelicerata) using fluorescence spectroscopy.
Pavlina, Dolashka-Angelova +6 more
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Isolation and characterization of a hemagglutinin from Limulus polyphemus
Journal of Molecular Biology, 1968A natural hemagglutinin from the hemolymph of the horseshoe crab Limulus polyphemus has been isolated and partially characterized. The hemagglutinin is a protein having a molecular weight of approximately 400,000 and an S20,w0 = 13.5 s. It consists of subunits having a molecular weight of 22,500 which are linked through non-covalent interactions.
J J, Marchialonis, G M, Edelman
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Sperm competition in horseshoe crabs ( Limulus polyphemus )
Behavioral Ecology and Sociobiology, 1994Male horseshoe crabs have two mating tactics. Some males come ashore attached to a female (clasping the posterior margin of the females' carapace with their modified pedipalps) and nest with her on the intertidal portion of the beach during the high tide. Other males come ashore unattached and crowd around nesting couples. Fertilization is external and
H. Jane Brockmann +2 more
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The respiratory physiology of hemocyanin in Limulus polyphemus
Journal of Experimental Zoology, 1973Abstract Data obtained from measurements of internal pO2's with oxygen micro‐electrodes and measurements of oxygenation are used to interpret the respiratory function of Limulus hemocyanin. In animals acclimated to 8°C the coelomic fluid pO2's are lower than in those acclimated to 24°C.
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The abdominal cardiac nerves and cardioregulation in Limulus polyphemus
Comparative Biochemistry and Physiology, 1969Abstract 1. 1. A major response to stimulation of any of the abdominal cardiac nerves of Limulus polyphemus is an increased heart beat rate. 2. 2. Maximum increases in rate (6–8 beats/min) can be produced with stimulus frequencies as low as 5/sec. 3. 3.
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The Visual System of the Horseshoe Crab Limulus polyphemus
1975Publisher Summary This chapter discusses the visual system of the horseshoe crab Limulus polyphemus. The chapter provides a diagnostic guide to the various cells and tissues of the eyes and reviews the current status of information on their structural-functional correlations.
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Metabolism of glucose and glycogen in Limulus polyphemus in vivo
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 19821. As much as 70% of Tritium administered on C-6 of glucose is excreted as 3H2O within 3 hr, showing an extensive, rapid glycolytic degradation of glucose in Limulus. About 80% of the 14C found in Limulus blood one hour after injection of glucose-14C is in the anionic fraction. 2.
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Behavioral and Neurophysiological Investigations of Limulus Polyphemus
1968Anyone who frequents the beaches along the East Coast of the United States is most likely well acquainted with one of the ocean’s more bizarre inhabitants, the horseshoe crab or Limulus polyphemus. The large size of this arthropod (specimens up to 75 cm long are quite common), its unusual morphology, and its purported phylogenetic antiquity would all ...
W. C. Corning, R. von Burg
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Spermiogenesis in the horseshoe crab, Limulus polyphemus
Journal of Morphology, 1973AbstractGroups of spermatids of Limulus polyphemus undergo differentiation in thin‐walled cysts within the seminiferous tubules. The nucleus compacts to a spherical shape, but retains a much less condensed nuclear appendage, whose unique pores are each surrounded by a microtubule.
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