ABL_KINASE packed 2026-08-23
Campaign summary
| Field | Value | Details |
|---|---|---|
| Input file | boltz_input.md | boltz_input.md |
| Proteins | 1 | 2 protein block(s) in 1 group(s): ABL1 (1130 aa); ABLAP (1130 aa) |
| Co-folded partners | 0 | none |
| Ligands | 2 | IMATI (SMILES); DASAT (SMILES) |
| Pockets | 1 | 1N1 |
| Apo structure references | 1 | ABLAP |
| Predictions | 5 | ABL1_IMATI, ABL1_IMATI_1N1, ABL1_DASAT, ABL1_DASAT_1N1, ABLAP |
| Predict affinity | yes | pIC50 predicted for every ligand-bound prediction |
| Ligand chemistry | 2 of 2 flagged | IMATI, DASAT -- see "Ligand preparation" below |
| Boltz predict runtime | 2h 33m 26s | across 2 run invocations |
| Accelerator | gpu | gpu = Metal/CUDA backend used; cpu = no GPU available |
| Workers | 0 | parallel data-loading workers (Boltz's own default is 2) |
| MPS watermark | 1.0 | PYTORCH_MPS_HIGH_WATERMARK_RATIO cap -- lower avoids swap on Apple unified memory |
| Max parallel samples | 1 | Boltz's own --max_parallel_samples |
| Max MSA sequences | 4096 | cap on MSA sequences used for co-evolution features |
Reference structures
The experimental structures this campaign was built on: where each pocket came from, and what the secondary-structure comparison measures against.
Pocket definitions
| From | Proteins | Contacts | |
|---|---|---|---|
| 1N1 | 2GQG | ABL1 | 18 |
| STI | 1IEP | ABL1 | reference only |
Secondary-structure references
| Protein | Structure | State | Contents | Chain |
|---|---|---|---|---|
| ABL1 | 2gqg.cif | DFG-in, αC-in | 2 chain(s), bound: 1N1, PTR | auto |
A kinase's state is its DFG motif and αC helix, taken from the secondary-structure comparison.
Ligand definitions
| Ligand | Class | Given as | Experimental structure |
|---|---|---|---|
| IMATI | Control | SMILES | STI |
| DASAT | Control | SMILES | 1N1 |
A control has been verified experimentally, by structure or by assay, so its prediction can be checked; an experimental compound is under investigation, with nothing to check against. Experimental compounds are ringed in red in the charts.
pIC50 vs confidence score
Click a point to open that target, in the panel below the Targets table.
pIC50 vs binder probability
Click a point to open that target, in the panel below the Targets table.
Ranked predicted pIC50
Click a point to open that target, in the panel below the Targets table.
Ranked confidence
Click a point to open that target, in the panel below the Targets table.
Summary table
| Identity | Affinity | ▸ Confidence (5) | Structure | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Run | Protein | Ligand | Class | Summary | Binder | pIC50 | Score | pTM | ipTM | Lig | pLDDT | CIF | |
| 4 | ABL1 | DASAT | 1N1 | Control | ⚠️ | 0.99 | 12.41 | 0.64 | 0.54 | 0.98 | 0.98 | 0.55 | CIF |
| 2 | ABL1 | IMATI | 1N1 | Control | ⚠️ | 0.83 | 10.38 | 0.63 | 0.54 | 0.98 | 0.98 | 0.55 | CIF |
| 3 | ABL1 | DASAT | Unc | Control | 0.92 | 10.33 | 0.53 | 0.41 | 0.84 | 0.84 | 0.46 | CIF | |
| 1 | ABL1 | IMATI | Unc | Control | 0.36 | 8.33 | 0.47 | 0.40 | 0.57 | 0.57 | 0.45 | CIF | |
| 5 | ABLAP | Apo | N/A | N/A | N/A | N/A | N/A | 0.53 | 0.48 | N/A | N/A | 0.54 | CIF |
Predictions
One row per prediction. Click one to see its pose and interactions, in the panel below.
| Run | Prediction | Protein | Ligand | Class | Confidence | pIC50 | Interactions | Flags |
|---|
Overall structure
Interaction diagram
Detected interactions
Metrics
Sequence
Pockets
1 named pocket(s) (1N1) plus an unconstrained baseline; contacts are enforced within 4 A.
| Protein | Ligands | Runs | Targets | Contacts | |
|---|---|---|---|---|---|
| 1N1 | ABL1 | IMATI, DASAT | 2, 4 | 2 | 18 residue(s) |
| Unconstrained | ABL1 | IMATI, DASAT | 1, 3 | 2 | none -- ligand placed freely |
Where the ligands landed
Ligand preparation
2 of 2 ligand(s) flagged for chemistry review -- these are advisory, not errors; verify the input SMILES reflects what you intended before trusting the results below.
| Ligand | Chemistry notes |
|---|---|
| IMATI | ionizable group(s) present (primary/secondary amine) -- verify the SMILES reflects your intended protonation state |
| DASAT | ionizable group(s) present (primary/secondary amine) -- verify the SMILES reflects your intended protonation state |
Ligand structures
No shared scaffold or substructure detected across the set -- ligands are structurally distinct.
Download PDF · Download SMILES
Scaffolds: Bemis-Murcko, exact match first, then Tanimoto-clustered (Morgan r=2, 2048-bit, threshold 0.60) whole-group MCS as a verified fallback. Minimum highlighted substructure size: 8 heavy atoms. Stereocentre/ionizable-group highlighting from this campaign's own ligand-preparation check (see above).
SSE motif shifts (apo vs holo)
| Identity | Shift | Backbone | Kinase state | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Family | Target | Ligand | Motif | Kind | Source | N res | RMSD (A) | Centroid delta (A) | Flagged phi/psi | DFG apo | DFG holo | DFG delta | alphaC apo | alphaC holo | alphaC delta |
| ABL1 | ABL1_DASAT | DASAT | DFG | loop | kinase | 3 | 2.91 | 1.22 | 3 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | DFG | loop | kinase | 3 | 3.23 | 1.70 | 3 | in | other | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | catalytic_loop | loop | kinase | 3 | 1.63 | 1.63 | 0 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | catalytic_loop | loop | kinase | 3 | 0.91 | 0.90 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | hinge | loop | kinase | 3 | 0.41 | 0.37 | 0 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | hinge | loop | kinase | 3 | 0.49 | 0.45 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | pocket_scaffold | loop | kinase | 73 | 1.67 | 0.00 | 12 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | pocket_scaffold | loop | kinase | 73 | 1.59 | 0.00 | 10 | in | other | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | alphaC_Glu | point | kinase | 1 | 2.07 | 2.07 | 0 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | alphaC_Glu | point | kinase | 1 | 1.87 | 1.87 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | catalytic_Lys | point | kinase | 1 | 1.33 | 1.33 | 0 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | catalytic_Lys | point | kinase | 1 | 0.67 | 0.67 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | gatekeeper | point | kinase | 1 | 0.36 | 0.36 | 0 | in | out | True | in | in | False |
| ABL1 | ABL1_DASAT | DASAT | gatekeeper | point | kinase | 1 | 0.55 | 0.55 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | DFG | loop | kinase | 3 | 3.22 | 2.08 | 3 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | DFG | loop | kinase | 3 | 5.36 | 4.23 | 2 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | catalytic_loop | loop | kinase | 3 | 2.45 | 2.43 | 0 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | catalytic_loop | loop | kinase | 3 | 0.40 | 0.30 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | hinge | loop | kinase | 3 | 0.47 | 0.29 | 0 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | hinge | loop | kinase | 3 | 0.59 | 0.55 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | pocket_scaffold | loop | kinase | 73 | 2.13 | 0.00 | 12 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | pocket_scaffold | loop | kinase | 73 | 2.73 | 0.00 | 12 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | alphaC_Glu | point | kinase | 1 | 3.44 | 3.44 | 0 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | alphaC_Glu | point | kinase | 1 | 1.84 | 1.84 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | catalytic_Lys | point | kinase | 1 | 1.32 | 1.32 | 0 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | catalytic_Lys | point | kinase | 1 | 1.51 | 1.51 | 0 | in | other | True | in | in | False |
| ABL1 | ABL1_IMATI | IMATI | gatekeeper | point | kinase | 1 | 0.46 | 0.46 | 0 | in | other | True | in | out | True |
| ABL1 | ABL1_IMATI | IMATI | gatekeeper | point | kinase | 1 | 0.39 | 0.39 | 0 | in | other | True | in | in | False |
Family coverage and SSE shifts
| Family | Status | Detail |
|---|---|---|
| ABL1 | OK | 28 motif row(s) across 4 target(s), annotator=kinase |
| ABLAP | No apo structure configured | No 'Apo structure:' configured for this family |
Overall shift statistics
- 2 target(s), 28 motif(s) compared
- Mean Ca RMSD: 1.64 A (median 1.55 A) — largest shift: 5.36 A at ABL1_IMATI / DFG
- Mean centroid shift: 1.14 A
- Flagged phi/psi outlier residues: 57
- Kinase state changes detected: 28 DFG, 7 alphaC
Per-motif Ca RMSD
Loops
Transmembrane
Selectivity and motif shifts
Family x ligand selectivity
Motif x target RMSD
Ligand pose vs experiment
4 target(s) compared against experimental structures in reference/. Atoms are paired by molecular graph, so the symmetry of the ligand is respected rather than being resolved by whichever atom happened to be nearest.
| Target | Protein | Ligand | Reference | Site (A) | Pose (A) | Conformer (A) | ||
|---|---|---|---|---|---|---|---|---|
| ABL1_IMATI_1N1 | ABL1 | IMATI | 1N1 | 1IEP (STI) | 0.38 | 0.56 | 0.25 | |
| ABL1_DASAT_1N1 | ABL1 | DASAT | 1N1 | 2GQG (1N1) | 0.97 | 2.03 | 1.73 | |
| ABL1_DASAT | ABL1 | DASAT | unconstrained | 2GQG (1N1) | 1.48 | 2.66 | 1.92 | |
| ABL1_IMATI | ABL1 | IMATI | unconstrained | 1IEP (STI) | 14.66 | 18.39 | 2.48 |
Predicted against experimental
Residue interaction fingerprints
Which residues each ligand touches, per protein. One scale for all of them, so a strong contact looks the same in every plot.
ABL1
The reports as files
The same panels as BoltzMaker wrote them, if you want the whole page in one file.
Landlord narration
4 of 5 target summaries written on-device by the Apple Neural Engine; 1 rendered from the template. Every number here is checked against the figures the analysis computed; a summary stating one it was not given was replaced by the template.
The ABL_KINASE campaign tested the ability to predict the structure of ABL1 and ABLAP, using DASAT and IMATI as ligands. Of 5 predicted targets, 4 were flagged as caution and 1 as discard.
| Targets | 5 predicted, 4 with a ligand |
|---|---|
| Receptors | ABL1, ABLAP |
| Ligands | DASAT, IMATI |
| Verdicts | 4 caution, 1 discard |
| Confidence | 3 poorly determined, 2 moderately determined |
| Flagged | 5 of 5 |
| Pose validated | 1 of 4 reproduced the experimental pose |
Key findings
- Of 5 targets, 0 are marked proceed, 4 caution and 1 discard.
- 0 of 5 targets are well determined; 5 are not.
- 5 of 5 targets carry at least one flag.
- 4 targets could be checked against an experimental structure, and 1 reproduced the experimental pose.
Highest predicted potency
- DASAT on 4_ABL1_DASAT_1N1, predicted pIC50 12.41
- IMATI on 2_ABL1_IMATI_1N1, predicted pIC50 10.38
- DASAT on 3_ABL1_DASAT_Unc, predicted pIC50 10.33
Caveats
The campaign was limited by the fact that the confidence of the structure was moderately determined, meaning that it is somewhat reliable but could still be improved.
Per target
| Target | Verdict | Summary | Caveat | Written by |
|---|---|---|---|---|
ABL1_IMATI | discard | The structure is poorly determined, and this means that someone deciding whether to trust it should be cautious. IMATI is poorly placed relative to the receptor and has a predicted potency of 8.33, ranking it fourth among four ligands tested | Overall confidence is below the well-determined threshold. | model |
ABL1_IMATI_1N1 | caution | The structure is moderately determined, meaning it is likely to be accurate, but not absolutely so. This level of certainty may be acceptable for some applications, but not for others where high precision is required. IMATI is a control ligand with low predicted potency, indicating that it is unlikely to bind to ABL1 effectively. Its interaction analysis has not been run, which may affect the accuracy of the prediction. | Overall confidence is below the well-determined threshold, meaning the structure is not considered to be reliable enough for most applications. | model |
ABL1_DASAT | caution | The structure is poorly determined: confidence 0.534, ipTM 0.835, ligand ipTM 0.835. DASAT (control) at Unc: predicted pIC50 10.33, binder probability 0.922, ranked 3 of 4 by predicted potency. Interactions: interaction analysis not run. Against 2GQG the prediction close to the experimental pose (pose 2.66 Å). | overall confidence is below the well-determined threshold. | template |
ABL1_DASAT_1N1 | caution | The confidence of this structure is moderately determined, meaning that it is somewhat reliable but could still be improved. This suggests that while the structure is close to the experimental pose, it is not yet a definitive model. DASAT is a control ligand with a high binder probability. Its predicted potency is 12.41, placing it first among the ligands tested. However, interaction analysis was not run, so the exact nature of its interactions with the receptor is unknown. | Overall confidence is below the well-determined threshold, indicating that the structure may not be as reliable as expected. This caution should be taken when considering the model for further research or practical applications. | model |
ABLAP | caution | The confidence score for this structure is low. This means it is difficult to trust this structure, and it is likely to be incorrect. | Overall confidence is below the well-determined threshold and the ligand is poorly placed relative to the receptor | model |