MAPK variant effect atlas
Proteins / GRB2

GRB2

Growth factor receptor-bound protein 2

Mutagenized 2–217SH3 1–56SH3SH2 56–150SH2SH3 160–212SH31217 aagrey box: mutagenized region

MAPK pathway activity (phosphorylated ERK2 reporter) under basal conditions. Scores are WT-relative: 1 = wild type.

4,807 variantsmissense decreased 14% · increased 35%
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Annotation tracks
Structure
Function
Chaperone
Variant effect
Track legend & definitions
Secondary structure
alpha helix3-10 helixpi helixbeta strandbeta bridgeturnbendno_ss
DSSP assignment on the reference structure.
Relative SASA
0.000.250.500.751.00
Side-chain solvent accessibility (0 = buried, 1 = fully exposed). The pipeline calls a residue surface-exposed above 0.25.
pLDDT
50.062.575.087.5100.0
AlphaFold per-residue confidence. The analysis drops residues below 60.
Curated feature
Protein-protein interfaceCatalytic / active siteLigand / substrate pocketRegulatory elementOther annotation
UniProt / literature annotation, coloured by class. Red marks a curated protein-protein interface — the independent comparison for our predicted interfaces.
Annotated interface
yesno
Curated protein-interface residue, independent of any structure prediction in this study.
Active site
yesno
Curated catalytic / active-site residue.
Inter-domain contact
yesno
Residue contacting another domain of the same protein (all-atom), so a variant effect there may be intramolecular rather than at a PPI.
HSP90 contact
TrueFalseUnknown
Contacts HSP90 in the chaperone-client cryo-EM structures ('Unknown' where the protein was not mapped).
CDC37 contact
TrueFalseUnknown
Contacts CDC37. These positions report kinase foldability rather than a canonical binding surface.
Fraction decreased
0%25%50%75%100%
Fraction of variants at this position classified decreased in this assay (2.5th-percentile rule).
Fraction increased
0%25%50%75%100%
Fraction of variants at this position classified increased in this assay.
Domain Secondary structure Relative SASA pLDDT Curated feature Annotated interface Active site Inter-domain contact HSP90 contact CDC37 contact Fraction decreased Fraction increased Interface A V I L G F Y W C M P S T N Q D E H K R * -
SH3 SH3 SH2 20 40 60 80 100 120 140 160 180 200 0.50 1.00 2.00
Click a position for its interactions and annotations — ■ the Interface strip marks positions in ≥1 supported interface (darker = more partners)

Structure · GRB2 alone

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Interfaces of GRB2

One row per interface: complexes of the same pair and source whose interfaces overlap (IoU ≥ 0.3) are merged, as in the Fig. 6c,d volcano plots (median Cohen's d; q from the geometric-mean p). Supported: at least one complex with q < 0.05 and |d| ≥ 0.2 in either basal assay.

PartnerSourceActivity dq Abundance dqInterface positionsSupported
LAT2AF-M-1.657.3e-52-0.872.5e-128supportedStructure ↗
PTPN6AF-M-1.368.1e-42-0.696.8e-0710supportedStructure ↗
SHP2AF-M-1.182.8e-39-0.781.0e-1111supportedStructure ↗
LATAF-M-1.527.4e-38-1.153.8e-196supportedStructure ↗
GAB3RF2-PPI+0.573.5e-12+0.776.0e-2713supportedStructure ↗
ERRFI1AF-M-0.100.327+1.091.5e-245supportedStructure ↗
PTPN22RF2-PPI-0.100.100+0.896.2e-247supportedStructure ↗
PTPN22AF-M-0.676.6e-24+0.160.01318supportedStructure ↗
ARHGAP12AF-M-0.793.3e-22-0.070.27212supportedStructure ↗
TNK2AF-M-0.808.0e-20-0.050.1338supportedStructure ↗
GAB2PDB+1.219.0e-19+0.512.0e-056supportedStructure ↗
BTK
SH2_GRB2_like
AF-M-1.326.7e-18-0.552.1e-054supportedStructure ↗
NTRK3
SH2_GRB2_like
AF-M-0.801.2e-17-0.781.1e-148supportedStructure ↗
DLGAP1AF-M-0.480.002+0.851.4e-155supportedStructure ↗
THEMISAF-M+0.583.6e-15+0.561.6e-1015supportedStructure ↗
DCTN1AF-M-0.322.6e-07+0.813.7e-156supportedStructure ↗
PAK2RF2-PPI-0.000.814+0.567.7e-1519supportedStructure ↗
ARHGAP9AF-M-0.723.8e-14-0.194.5e-0610supportedStructure ↗
RAPGEF1RF2-PPI+0.010.714+0.814.7e-144supportedStructure ↗
REPS2RF2-PPI-0.000.821+0.801.2e-134supportedStructure ↗
GRB2
SH2_GRB2_like
PDB+0.504.7e-11-0.120.01315supportedStructure ↗
GAB2AF-M-0.210.011+0.361.0e-1016supportedStructure ↗
VAV3AF-M+0.691.8e-10+0.431.3e-079supportedStructure ↗
GRB2
SH2_GRB2_like #3
PDB-0.591.6e-08+0.582.4e-078supportedStructure ↗
PAK1AF-M-0.432.1e-08-0.200.59618supportedStructure ↗
REPS1RF2-PPI-0.120.193+0.544.7e-086supportedStructure ↗
Vav1PDB+0.551.0e-06+0.575.5e-089supportedStructure ↗
DOCK1AF-M-0.544.3e-07-0.230.5568supportedStructure ↗
THEMISPDB+0.070.949+0.442.7e-0613supportedStructure ↗
GRB2
SH2_GRB2_like #2
PDB+0.403.6e-06-0.392.2e-046supportedStructure ↗
NTRK3
SH3_GRB2_C
AF-M-0.490.001+0.240.1425supportedStructure ↗
BTK
SH3_GRB2_C
AF-M+0.120.079+0.320.0054supportedStructure ↗
LRRK1AF-M+0.170.165+0.130.1238supportedStructure ↗