the binding site interactions between the phosphorylcholine ( phosphocholine ) -binding mouse myeloma proteins tepc 15 , w3207 , mcpc 603 , mopc 167 , and mopc 511 and the isotopically substituted hapten phosphoryl [ methyl-13c ] choline have been investigated using 13c and 31p nuclear magnetic resonance ( nmr ) spectroscopy .
C0031716
phosphocholine
C0008405
choline