The structure of arthropod hemocyanins
| Autor: | Anne Volbeda, M. D. Moore, Takayuki K. Nemoto, Toshiyuki Takagi, E. Yokota, Jaap J. Beintema, Nell M. Soeter, Hitoshi Nakashima, Austen Riggs, W. Schartau, Hans-Jürgen Schneider, Bernt Linzen, W. P. J. Gaykema, Henk J. Bak, Johan M. Vereijken, P. Q. Behrens, Wim G. J. Hol |
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| Jazyk: | angličtina |
| Rok vydání: | 1985 |
| Předmět: |
Models
Molecular Chemical Phenomena Protein Conformation Copper protein medicine.medical_treatment Protein subunit Biology Species Specificity Crustacea Arachnida medicine Animals Amino Acid Sequence Arthropods Peptide sequence Binding Sites Multidisciplinary Ecology fungi Protein primary structure Hemocyanin biology.organism_classification Biological Evolution Crustacean Chemistry Evolutionary biology Hemocyanins Arthropod Spiny lobster Copper |
| Zdroj: | Science, 229(4713), 519-524. AMER ASSOC ADVANCEMENT SCIENCE |
| ISSN: | 1095-9203 0036-8075 |
| Popis: | Hemocyanins are large multi-subunit copper proteins that transport oxygen in many arthropods and molluscs. Comparison of the amino acid sequence data for seven different subunits of arthropod hemocyanins from crustaceans and chelicerates shows many highly conserved residues and extensive regions of near identity. This correspondence can be matched closely with the three domain structure established by x-ray crystallography for spiny lobster hemocyanin. The degree of identity is particularly striking in the second domain of the subunit that contains the six histidines which ligate the two oxygen-binding copper atoms. The polypeptide architecture of spiny lobster hemocyanin appears to be the same in all arthropods. This structure must therefore be at least as old as the estimated time of divergence of crustaceans and chelicerates, about 540 to 600 million years ago. |
| Databáze: | OpenAIRE |
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