(A) and B chains - Michael P. Ready
... RIP (ricin-A, ricin-B, and lectin RCAA and RCA-B from castor bean;
abrin-A, abrina/b-B, and agglutinin
APA-A and APA-B from A.
precatorius; SNAI-A and SNAI-B,
SNAV-A and SNAV-B, SNAI'-A and
SNAI'-B, LRPSN1-A and LRPSN1-B,
LRPSN2-A and LRPSN2-B, and SNAIV from S. nigra; sieboldinb-A,
sieboldinb-B, SS ...