| membrane protein → ReceivesAction → difficult to crystallize | 0.56 | |
| membrane protein → ReceivesAction → encoded by the bcl-2 genes | 0.45 | |
| membrane protein → ReceivesAction → embedded into liposome | 0.40 | |
| membrane protein → ReceivesAction → involved in active transport of… | 0.25 | |
| membrane protein → ReceivesAction → difficult to study | 0.25 |