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new PDB depositions vs. their blind AlphaFold predictions — a running test of "is folding solved?"

36OK_A

Isoform 2B of GTPase KRas · P01116 · RCSB 36OK · AF-P01116-F1 (v6)

0.9746

TM-score

0.9582

lDDT

0.803

Cα-RMSD Å

95.11

mean pLDDT

0.0313

FRAUD score

99.4%

novelty (max id)

Per-domain breakdown

Source	Domain	Range	Residues	TM	RMSD Å	mean Cα Δ	Name
PAE	PAE:1-189	1-189	169	0.9798	0.803	0.519

All metrics

Global fold agreement

TM-score (norm. experiment)	0.9746
TM-score (norm. model)	0.878
TM-score (norm. shorter)	0.9746
TM-score (norm. longer)	0.878
Cα-RMSD (Å)	0.803
backbone-RMSD (Å)	0.787
all-atom-RMSD (Å)	1.3
core-RMSD (Å)	0.461
core fraction	0.97
GDT_TS	97.49
GDT_HA	89.94
MaxSub	0.9891
structural overlap (3.5 Å)	0.9763

Local, superposition-free

lDDT	0.9582
contact-map Jaccard	0.9383
contact precision	0.9712
contact recall	0.9651
distance-matrix mean Δ (Å)	0.313
CAD-score (approx)	0.8992

Backbone & secondary structure

SS agreement Q3 (%)	94.08
mean Δφ (°)	9.3
mean Δψ (°)	9.5
torsion within 30° (frac)	0.9172
Rg experiment (Å)	14.65
Rg model (Å)	14.62
ΔRg (Å)	0.03

Confidence calibration

mean pLDDT	95.11
pLDDT↔lDDT Pearson	0.7737
pLDDT↔lDDT Spearman	0.6215
PAE↔observed Pearson	0.4277
PAE overconfident frac	0.0
mean PAE (Å)	4.306
mean observed error (Å)	0.311

Context & headline

coverage of model	0.8942
coverage of experiment	0.9941
seq identity aligned (%)	95.86
confidently-wrong residue frac	0.0118
FRAUD score	0.0313

Deposited 2026-06-23 · released 2026-07-01 · X-ray · 1.21 Å · closest pre-cutoff chain: 2MSC_2