| Accession: | |
|---|---|
| Functional site class: | Raptor interacting motif |
| Functional site description: | At least one (but perhaps more) motifs interact with raptor as part of TOR pathway function. TOR is a kinase that regulates translation in a pathway with broad effects on many other cellular processes. The best known raptor-binding motif is TOS (the TOR signalling motif). |
| ELM Description: | The TOS motif is found in substrates of the mTOR kinase. TOS interacts with the WD40-containing adaptor protein Raptor that is required to bring TOR together with its substrates. This motif expression is derived from the conservation observed in the 4E-BP translation initiation factors and the ribosomal s6-beta kinases and shows a strong beta amphipathicity. The motif alternates between hydrophobic and negatively charged residues. Although the structure of a TOS-Raptor complex is not yet known, the conservation might imply that the motif is bound in a sandwiched pocket. The terminal charged moiety can be either the carboxy-terminus (4E-BP1,2,3) or an amino acid (S6-beta kinase). TOS motifs reported in Hif1-alpha, Pld2 and AKTS1 do not match the motif expression in the ELM resource. The TOS motif is clearly not present in many proteins but the NUMB and NUMBL proteins do contain plausible candidates that might be worth investigating. The TOS motif as described here is found in Metazoa, slime mould and one basidiomycete, but not in other Fungi. If the phylogenetic distribution is larger, then the TOS motif will have diverged indifferent lineages. |
| Pattern: | F[EDQS][MILV][ED][MILV]((.{0,1}[ED])|($)) |
| Pattern Probability: | 0.0000207 |
| Present in taxon: | Eukaryota |
| Interaction Domain: |
WD40 (PF00400)
WD domain, G-beta repeat
(Stochiometry: 1 : 1)
|
| Acc., Gene-, Name | Start | End | Subsequence | Logic | #Ev. | Organism | Notes |
|---|---|---|---|---|---|---|---|
| Q13541 EIF4EBP1 4EBP1_HUMAN |
114 | 118 | RNSPEDKRAGGEESQFEMDI | TP | 6 | Homo sapiens (Human) | |
| Q9UBS0 RPS6KB2 KS6B2_HUMAN |
5 | 10 | MAAVFDLDLETEEGSEGEGE | TP | 2 | Homo sapiens (Human) | |
| P23443 RPS6KB1 KS6B1_HUMAN |
28 | 33 | AEDMAGVFDIDLDQPEDAGS | TP | 2 | Homo sapiens (Human) | |
| O60516 EIF4EBP3 4EBP3_HUMAN |
96 | 100 | LKEQETEEEIPDDAQFEMDI | TP | 5 | Homo sapiens (Human) | |
| Q13542 EIF4EBP2 4EBP2_HUMAN |
116 | 120 | LNNHDRKHAVGDDAQFEMDI | TP | 5 | Homo sapiens (Human) |