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  • Title: Nucleotide sequence of cDNA and derived amino acid sequence of rabbit complement component C3 alpha-chain.
    Author: Kusano M, Choi NH, Tomita M, Yamamoto K, Migita S, Sekiya T, Nishimura S.
    Journal: Immunol Invest; 1986 Jun; 15(4):365-78. PubMed ID: 3019881.
    Abstract:
    The nucleotide sequence coding for 726 amino acid residues of the alpha-chain of rabbit C3 was determined from a cDNA clone. Subfragments of the cDNA produced by restriction endonucleases were inserted into the bacteriophage M13 and sequenced using the dideoxynucleotide technique. The derived amino acid sequence was compared with those of human and mouse C3, which have been previously reported [by De Brujn, M.H.L. and Fey, G.H. (1985) Proc. Natl. Acad. sci. USA 82, 708, and Westel, R.A. et al. (1984) J. Biol. chem. 259, 13857, respectively]. There was 79% or 78% homology in amino acid sequence between rabbit and human or mouse C3, respectively. All of the cysteinyl residues were conserved among the three molecules, and the sequence around the thioester site was also highly conserved. Several regions having low homology were found: one of them was the small fragment released by factor I cleavage.
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