a comparison of the nca sequence to the cea sequence ( oikawa , s. , nakazato , h. , and kosaki , g. ( 1987 ) biochem . biophys . res . commun . 142 , 511-518 ; zimmerman , w. , ortlieb , b. , friedrich , r. , and von kleist , s. ( 1987 ) proc . natl . acad . sci . u. s. a . 84 , 2690-2694 ) shows that both proteins contain doublets of an immunoglobulin-like domain , of which there are one copy in nca and three copies in cea , a 108-amino acid amino-terminal domain with no cysteine residues , and a carboxyl-terminal hydrophobic domain of sufficient length to anchor the glycoproteins in the cell membrane .
C0007082
cea
C0007603
the