Table 1.

D2	Receptor constructs	Heteromer formation
L1	…PPERTR (YSPIP…LSQQ) KEKK…	Yes
L2	…RRRRKR (VNTK….ERTR) YSPI…	No
L3	…VNRRRV (EAARRA….ERTR) YSPI …	No
L4	…RRRRKR (VNTKR….APLK) GNCT…	Yes
L5	…QELEME (MLSSTSPPERTR) YSPI …	Yes
L6	…VNRRRV (EAARRAQELEME) MLSS…	No
L7	…EAARRA (QELEME) MLSS …	Yes
L8	…VNRRRV (EAARRA) QELE…	No
L9	…VNRRRV EAAAAA QELE…	No
L10	…VNRRRV AAARRA QELE…	Yes
L11	…VNRRRV EAARAA QELE…	No
L12	…VNRRRV EAAARA QELE…	No
L13	…VNRRRV EAAKKA QELE…	No
L14	…MKLCTVI (IMKSNGSFPVNRRRVE)AARR…	Yes
L15	…KIYIVL AAAAAAVNTK…	Yes

Amino acid sequence in italics, underlined and brackets indicates deletions.

Amino acid sequence in italics, and underlined indicates substitutions.