Ragulator complex protein LAMTOR4 (LAMTOR4) is a 99-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: Q0VGL1.
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The mean pLDDT of this model is 87.9 (confident overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.
| pLDDT band | Meaning | Share of residues |
|---|---|---|
| Above 90 | Very high: backbone and side chains are usually accurate | 68% |
| 70 to 90 | Confident: backbone generally right | 20% |
| 50 to 70 | Low: treat with caution | 11% |
| Below 50 | Very low: often disordered regions | 1% |
What pLDDT means and how to read it
As part of the Ragulator complex it is involved in amino acid sensing and activation of mTORC1, a signaling complex promoting cell growth in response to growth factors, energy levels, and amino acids (PubMed:22980980, PubMed:28935770, PubMed:29107538, PubMed:29158492, PubMed:30181260). Activated by amino acids through a mechanism involving the lysosomal V-ATPase, the Ragulator plays a dual role for the small GTPases Rag (RagA/RRAGA, RagB/RRAGB, RagC/RRAGC and/or RagD/RRAGD): it (1) acts as a guanine nucleotide exchange factor (GEF), activating the small GTPases Rag and (2) mediates recruitment of Rag GTPases to the lysosome membrane (PubMed:22053050, PubMed:22980980, PubMed:28935770,…
Part of the Ragulator complex composed of LAMTOR1, LAMTOR2, LAMTOR3, LAMTOR4 and LAMTOR5 (PubMed:22980980, PubMed:28935770, PubMed:29107538, PubMed:29123114, PubMed:29158492, PubMed:29285400, PubMed:31601708, PubMed:32868926, PubMed:35338845, PubMed:36103527, PubMed:36697823). LAMTOR4 and LAMTOR5 form a heterodimer that interacts, through LAMTOR1, with a LAMTOR2, LAMTOR3 heterodimer…
Lysosome
Compare the prediction with experimentally determined structures of the same protein:
| PDB ID | Method | Resolution | Chains and residues |
|---|---|---|---|
| 6B9X | X-ray | 1.42 Å | D=1-99 |
| 5X6V | X-ray | 2.02 Å | D=1-99 |
| 5YK5 | X-ray | 2.03 Å | A=9-92, C=9-91 |
| 6EHP | X-ray | 2.3 Å | D=1-99 |
| 5X6U | X-ray | 2.4 Å | D=1-99 |
| 5Y39 | X-ray | 2.65 Å | D/I=1-99 |
| 5Y38 | X-ray | 2.8 Å | B=1-99 |
| 5VOK | X-ray | 2.89 Å | B/D/F/H=1-99 |
| 5Y3A | X-ray | 2.9 Å | D/I=1-99 |
| 6EHR | X-ray | 2.9 Å | D=1-99 |
| 7UX2 | EM | 2.9 Å | G/N=1-99 |
| 5YK3 | X-ray | 3.01 Å | D/I=1-96 |
| 6U62 | EM | 3.18 Å | G=2-99 |
| 6WJ2 | EM | 3.2 Å | D=1-99 |
| 7UXC | EM | 3.2 Å | I/P=1-99 |
| 7UXH | EM | 3.2 Å | K/R/a/h=1-99 |
| 9ED4 | EM | 3.23 Å | I/X=1-99 |
| 6ULG | EM | 3.31 Å | D=1-99 |
| 8DHB | EM | 3.53 Å | F=1-99 |
| 6NZD | EM | 3.6 Å | D=1-99 |
Showing 20 of 25 experimental structures (best resolution first).
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