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Panulirus interruptus hemocyanin the amino acid sequence of the region containing 1 copper binding site and the sites susceptible to limited proteolysis






Biochimica et Biophysica Acta 788(3): 298-305

Panulirus interruptus hemocyanin the amino acid sequence of the region containing 1 copper binding site and the sites susceptible to limited proteolysis

The amino-acid sequence of a part of P. interrruptus hemocyanin subunit a comprising the 3 ligands of the 1st Cu ion was determined. By fitting this sequence to the electron density map, all 3 ligands were found to be histidines. Comparison of the sequence with other sequenced subunits of arthropodan hemocyanins [Eurypelma, Limulus, Tachypleus] showed that a part of the residues, including the liganding histidines, has been conserved during evolution. The sequenced part of the molecules also contained the cleavage sites for proteolytic enzymes, located at the surface of the native molecule.

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Accession: 006059846



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