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

36OI_C

Peptidyl-prolyl cis-trans isomerase A · P62937 · RCSB 36OI · AF-P62937-F1 (v6)

0.9939

TM-score

0.9862

lDDT

0.385

Cα-RMSD Å

98.23

mean pLDDT

0.018

FRAUD score

100.0%

novelty (max id)

Per-domain breakdown

Source	Domain	Range	Residues	TM	RMSD Å	mean Cα Δ	Name
PAE	PAE:1-165	1-165	164	0.9939	0.385	0.276

All metrics

Global fold agreement

TM-score (norm. experiment)	0.9939
TM-score (norm. model)	0.9879
TM-score (norm. shorter)	0.9939
TM-score (norm. longer)	0.9879
Cα-RMSD (Å)	0.385
backbone-RMSD (Å)	0.411
all-atom-RMSD (Å)	1.017
core-RMSD (Å)	0.385
core fraction	1.0
GDT_TS	99.24
GDT_HA	97.26
MaxSub	0.9939
structural overlap (3.5 Å)	1.0

Local, superposition-free

lDDT	0.9862
contact-map Jaccard	0.9406
contact precision	0.9717
contact recall	0.9671
distance-matrix mean Δ (Å)	0.19
CAD-score (approx)	0.9235

Backbone & secondary structure

SS agreement Q3 (%)	95.12
mean Δφ (°)	6.5
mean Δψ (°)	5.0
torsion within 30° (frac)	0.9817
Rg experiment (Å)	14.0
Rg model (Å)	13.97
ΔRg (Å)	0.03

Confidence calibration

mean pLDDT	98.23
pLDDT↔lDDT Pearson	0.3092
pLDDT↔lDDT Spearman	0.1582
PAE↔observed Pearson	0.1359
PAE overconfident frac	0.0
mean PAE (Å)	1.977
mean observed error (Å)	0.189

Context & headline

coverage of model	0.9939
coverage of experiment	1.0
seq identity aligned (%)	100.0
confidently-wrong residue frac	0.0
FRAUD score	0.018

Deposited 2026-06-23 · released 2026-07-01 · X-ray · 1.47 Å · closest pre-cutoff chain: 1AK4_1