Table 2.
List of neuronal porosome proteins containing various lipid-binding domains
| Lipid-binding domains | Known proteins containing specific lipid binding domains | Lipids binding specific protein domains | Porosome proteins with lipid-binding domains |
|---|---|---|---|
| C1 (Cystein-rich C1 domains) | PKC isoforms -Diacylglycerol Kinase -c-Raf Ser/Thr Kinase -n-Chimaerin Rac-GTPase Activating Protein |
Diacylglycerol or phorbol esters | |
| C2 (Calcium-dependant lipid-binding domain) | -cPLA2 -Phosphatidylinositol 3- kinase (PI3K) -Tensin phosphatase -Synaptotagmin 1 |
Wide range of lipid selectivity including PC, PS |
Synaptotagmin 1 |
| PH (Pleckstrin Homology Domain) | Phospholipase C-δ, mSos1, RasGAP, Tsk, pleckstrin, Btk, Grp1, Akt, DAPP1, TAPP1, Spectrin beta, Dystrophin |
PI-(4,5)-P2; PI-(3,4,5)-P3 PI-(3,5)-P2; Ins(1,4,5)P3 |
GAP, Spectrin beta, Dystrophin (central rod made of 24 spectrin-like repeats) |
| FYVE (Fab-1, YGL023, Vps27 and EEA1 domain is a cysteine-rich Zn2+-binding domain of 60–70 AA) | -EEA1 Early Endosome Antigen -Hrs Putative ATPase -SARA (Smad Anchor for Receptor Activation) -FENS1 |
PI(3)P | |
| PX (Phox homology domain is ∼120 AA) | Found in more than 250 proteins, including the p40phox and p47phox components of the NADPH oxidase complex, sorting nexins, phospholipases D1 and 2 and the kinases PI3K and CISK. |
PI(3)P; PI-(3,4)-P2 PI-(3,4,5)-P3; PI-(3,5)-P2 PI(5)P |
|
| ENTH (Epsin N-terminal homology domain) | -CLINT1 (clathrin interactor) |
PI-(4,5)-P2 PI(1,4,5)P3 |
|
| ANTH (AP180 N-terminal homology domain) | PI-(4,5)-P2 | ||
| BAR (Bin/Amphiphysin/Rvs) | Endophilins, Dynamin, Nexins, Amphiphysin, RhoGAPs, RhoGEF |
Bind lipid membrane with high curvature | GAP, Dynamin Intersectin 1 (Rho family GEF) |
| FERM (Named after four proteins from which it was originally described: Band 4.1 (F), Ezrin >(E), Radixin (R) and Moesin (M)) |
Talin, Radixin, ERM, Willin, Moesin, PTP1, Radixin/Ezrin, JAK123 |
IP3, PI(3)P; PI(4)P; PI(5)P; PI-(4,5)P2; PI-(1,4,5)P3 |
|
| Tubby domains | Binds basic protein pockets | PIP2 |