Results 161 to 170 of about 23,592 (205)
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Journal of Chemical Education, 1976
The author contrasts hemocyanin against hemoglobin and discusses the occurrence of hemocyanin; oxygen and hemocyanin; the details of the oxygenation curves; Bohr effect and the respiration of squids and snails; and dissociation of association of hemocyanin.
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The author contrasts hemocyanin against hemoglobin and discusses the occurrence of hemocyanin; oxygen and hemocyanin; the details of the oxygenation curves; Bohr effect and the respiration of squids and snails; and dissociation of association of hemocyanin.
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Immunochemical properties of hemocyanin
Immunochemistry, 1964Abstract The immunochemical properties of the precipitation of anti-hemocyanin by associated and dissociated hemocyanin were found to be markedly different. The difference between the precipitation of associated and dissociated hemocyanin was observed with antibody to both the associated and dissociated hemocyanins.
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Inorganica Chimica Acta, 1983
Abstract Our attempts to understand oxygen binding at the active site of the binuclear copper protein hemocyanin (Hc) [1] encompass two strategies. The first of those is the investigation of the structures and reaction chemistry of Cu(I) complexes ligated by nitrogenous donors since the deoxy form of hemocyanin is of this form.
Thomas N. Sorrel +3 more
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Abstract Our attempts to understand oxygen binding at the active site of the binuclear copper protein hemocyanin (Hc) [1] encompass two strategies. The first of those is the investigation of the structures and reaction chemistry of Cu(I) complexes ligated by nitrogenous donors since the deoxy form of hemocyanin is of this form.
Thomas N. Sorrel +3 more
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Dissociation of Eriphia hemocyanin
Archives of Biochemistry and Biophysics, 1967Abstract Some aspects of the pH-dependent dissociation of a crustacean ( Eriphia spinifrons ) hemocyanin have been studied. We found that the largest molecules (~24 Svedbergs, molecular weight ~9.5 × 10 5 ) dissociate into two identical subunits (~16 Svedvergs, molecular weight ~4.5 × 10 5 ) which in turn dissociate into a not well-defined number of
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Cobalt-substituted derivatives ofCarcinus hemocyanin
Biology of Metals, 1990Four derivatives ofCarcinus maenas hemocyanin containing Co(II) in the active site have been prepared under different experimental conditions. Two of them contain one Co(II) ion/active site and most probably represent isomeric forms containing Co(II) either in the ‘fast-reacting’ or in the ‘slow-reacting’ position within the active site.
BUBACCO, LUIGI +3 more
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Quaternary structure of arthropod hemocyanins
Biochemical and Biophysical Research Communications, 1982Summary The models for the quaternary structure of 16S arthropod hemocyanin molecules based on the arrangement of six identical spheres in a trigonal antiprism and in a regular octahedron are shown to be identical. The effect of replacing the spheres with non-identical, non-symmetrical units is discussed.
N F, Ellerton, H D, Ellerton
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Hemocyanins in Spiders, XVII. A Presumptive Active-Site Sequence of Arthropodan Hemocyanins
Hoppe-Seyler´s Zeitschrift für physiologische Chemie, 1982Peptides containing the sequence -His-His-Trp-His-Trp-His- have been isolated from the subunits e and a of tarantula (Eurypelma californicum) hemocyanin and III B of Limulus polyphemus hemocyanin. In view of the published spectroscopic and titration data on the copper-polypeptide complex and the strong quenching effect of oxygenation on hemocyanin ...
H J, Schneider +5 more
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Architecture of Limulus polyphemus hemocyanin
Biochemistry, 1982The architecture of the 48-meric hemocyanin of the horseshoe crab Limulus polyphemus has been determined from electron micrographs of whole (48-mer) molecules and half- (24-mer) molecules. The assembly of hexamers of kidney-shaped subunits can produce two dodecameric enantiomorphs, designated as right and left.
J, Lamy +5 more
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Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1985
Abstract 1. 1. Hemocyanin from the chiton, Katharina tunicata , has a sedimentation coefficient (S o 20.w ) of 61.2S, M r = 4.2 × 10 6 , at pH 7.0 in the presence of 10 mM MgCl 2 . 2. 2. In electron micrographs, the 61S hemocyanin appears as a three-tiered cylinder, 31 nm in dia. and 19 nm in length, with a polar profile.
Margaret Ryan +3 more
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Abstract 1. 1. Hemocyanin from the chiton, Katharina tunicata , has a sedimentation coefficient (S o 20.w ) of 61.2S, M r = 4.2 × 10 6 , at pH 7.0 in the presence of 10 mM MgCl 2 . 2. 2. In electron micrographs, the 61S hemocyanin appears as a three-tiered cylinder, 31 nm in dia. and 19 nm in length, with a polar profile.
Margaret Ryan +3 more
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Thermal denaturation of lobster hemocyanin
Biochimica et Biophysica Acta, 1957Abstract 1. 1. A procedure for the determination of heat denaturation of hemocyanin by means of changes in specific refractive increment has been presented. The method possesses the advantage of requiring a small volume (0.1 ml) of solution for analysis. 2. 2.
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