J. Biol. Chem., Vol. 261, Issue 23, 10526-10533, 08, 1986
Structure of hemocyanin II from the horseshoe crab, Limulus polyphemus. Sequences of the overlapping peptides, ordering the CNBr fragments, and the complete amino acid sequence
H Nakashima, PQ Behrens, MD Moore, E Yokota and AF Riggs
The amino acid sequence of the largest fragment, CNBr Ia (203 residues) has
been reported (Yokota, E., and Riggs, A. F. (1984) J. Biol. Chem. 259,
4739-4749). The amino acid sequences of the second largest fragment, CNBr
Ib (142 residues), and of the 12 smaller fragments are reported in
accompanying papers (Moore, M. D., Behrens, P. Q., and Riggs, A. F. (1986)
J. Biol. Chem. 261, 10511-10519; Behrens, P. Q., Nakashima, H., and Riggs,
A. F. (1986) J. Biol. Chem. 261, 10520- 10525). The complete amino acid
sequence of hemocyanin component II has been established by isolation and
analysis of 13 methionine-containing peptides from either a tryptic digest
or a Staphylococcus aureus strain V8 protease digest of whole
carboxamidomethylated hemocyanin II. Hemocyanin II is composed of 628
residues and has a molecular weight with two copper atoms of 72,946.