Table 3.
Binding sites for PLCγ1-SH3 in selected signaling partners
| Group | Sequence | Positions | Protein | Reference |
|---|---|---|---|---|
| A | PPVPPQRPa | 186−193 | SLP-76 | This work |
| XPXXPXRP | IPLPPPRP | 158−165 | MIST | 17 |
| PPPPPDRP | 544−551 | c-Cbl | 36 | |
| PPPVPLRP | 1216−1223 | SOS1 | 18 | |
| PPGLPPRPa | 528−535 | TNK1 | 37 | |
| APPVPSRP | 812−819 | Dynamin | 20 | |
| PPQVPSRPa | 829−836 | Dynamin | 20 | |
| B | LPPVPPRL | 493−500 | c-Cbl | 36 |
| XPXXPXRX | PPPPPPRD | 1203−1210 | SOS1 | 18 |
| PPPLPPRK | 1146−1153 | SOS1 | 18 | |
| PPAIPPRQ | 1172−1179 | SOS1 | 18 | |
| APPVPPRQ | 1288−1295 | SOS1 | 18 | |
| C | GPVGPELP | 326−333 | CAIR-1/BAG-3 | 19 |
| XPXXPXXP | VPCPPPSP | 371−378 | CAIR-1/BAG-3 | 19 |
| APPPPPVP | 294−301 | SAM 68 | 38 |
Sequences of proteins known to bind PLCγ1-SH3 were compared to the SLP-76 186−193 sequence to identify potential binding sites. Consensus motifs for each group are indicated. Possible critical residues are in bold.
Direct interaction of peptides bearing this sequence with PLCγ1-SH3 has been reported.