TriCyp
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TriCyp

Three-state cysteine classification across ECOD F70 representative domains — disulfide-bonded, metal-binding, or free thiol — combining ESM2 predictions with PDB structural evidence.

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© 2026 Schaeffer & Cong Labs, UT Southwestern Medical Center

data · paper-v1·refreshed 2026-05-06

Dashboard/H-groups/X-group 3991/3991.1

Paper Fig 5E · candidate novel cysteine-chemistry H-group

Rabin8 C-terminal domain

H-group 3991.1 · X-group 3991 (Rabin8 C-terminal domain)

Candidate novel metal-binding H-group: third example illustrating the "low PDB known, high ESM2 predicted" cell of the Fig 5 confusion matrix.

PDB reps

2

AFDB reps

20

PDB disulfide

0.0%

AFDB disulfide

0.0%

PDB metal

7.1%

AFDB metal

31.0%

Side-by-side representatives

PDB-source representative on the left, AFDB-source representative on the right. Both viewers load via PDBe Mol* from public CDNs; external links open the corresponding RCSB / AFDB pages.

Fig 5E — H-group 3991.1 side-by-side
PDB-source representativee4uj3T1

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RCSB 4UJ3
AFDB-source representativeA0A0D2HAG5_F1_nD2

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AFDB A0A0D2HAG5
↓ hgroup_3991_1_pdb.pse (PDB-source PyMOL session)↓ hgroup_3991_1_afdb.pse (AFDB-source PyMOL session)

F70 representatives

22 domains, ordered by source then by metal-binding count.

DomainSourceF-groupCysDisulfideMetalFree thiolExternal
A0A0D2HAG5_F1_nD2afdb3991.1.1.26042AFDB A0A0D2HAG5
A0A175VNR2_F1_nD3afdb3991.1.1.25041AFDB A0A175VNR2
C0NYH9_F1_nD3
afdb
3991.1.1.2
8
0
4
4
AFDB C0NYH9
P17065_F1_nD2afdb3991.1.1.28044AFDB P17065
U7PTZ1_F1_nD4afdb3991.1.1.26042AFDB U7PTZ1
A0A1C1C9W3_F1_nD1afdb3991.1.1.13030AFDB A0A1C1C9W3
F1QQD0_F1_nD1afdb3991.1.1.16033AFDB F1QQD0
O13930_F1_nD3afdb3991.1.1.210037AFDB O13930
Q8N4S0_F1_nD1afdb3991.1.1.17034AFDB Q8N4S0
G5EE70_F1_nD2afdb3991.1.1.08026AFDB G5EE70
O13803_F1_nD1afdb3991.1.1.14022AFDB O13803
Q5AL49_F1_nD2afdb3991.1.1.27025AFDB Q5AL49
F1R4M2_F1_nD2afdb3991.1.1.27016AFDB F1R4M2
Q2KJ58_nD2afdb3991.1.1.26015AFDB Q2KJ58
A0A077ZF82_F1_nD2afdb3991.1.1.2100010AFDB A0A077ZF82
A0A0K0EP67_F1_nD2afdb3991.1.1.25005AFDB A0A0K0EP67
A0A183XD96_F1_nD2afdb3991.1.1.28008AFDB A0A183XD96
A0A3Q0KCB0_F1_nD2afdb3991.1.1.25005AFDB A0A3Q0KCB0
A0A5K4E9I7_F1_nD2afdb3991.1.1.25005AFDB A0A5K4E9I7
Q20759_F1_nD2afdb3991.1.1.25005AFDB Q20759
e4uj3T1pdb3991.1.1.28017RCSB 4UJ3
e4uj5D1pdb3991.1.1.26006RCSB 4UJ5