Structural Classification of Proteins

Fold: Thioredoxin fold

: core: 3 layers, a/b/a; mixed beta-sheet of 4 strands, order 4312; strand 3 is antiparallel to the rest

Lineage:

Root: scop
Class: Alpha and beta proteins (a/b) [51349]
Mainly parallel beta sheets (beta-alpha-beta units)
Fold: Thioredoxin fold [52832]
core: 3 layers, a/b/a; mixed beta-sheet of 4 strands, order 4312; strand 3 is antiparallel to the rest

Superfamilies:

Thioredoxin-like [52833] (23)
uperfamily
1. Thioltransferase [52834] (31)
2. PDI-like [52849] (6)
  duplication: contains two tandem repeats of this fold
3. Calsequestrin [52855] (1)
  duplication: contains three tandem repeats of this fold
4. DsbA-like [100953] (4)
  contains an all-alpha subdomain insertion
5. Glutathione S-transferase (GST), N-terminal domain [52862] (44)
6. Phosducin [52888] (2)
7. ERP29 N domain-like [52892] (2)
8. spliceosomal protein U5-15Kd [52895] (1)
9. SH3BGR (SH3-binding, glutamic acid-rich protein-like) [102446] (1)
  related to glutaredoxin 1 (GRX1) but lacks both conserved cysteine residues
10. KaiB-like [102449] (2)
  Pfam 07689; contains members with alternative folds
11. DsbC/DsbG C-terminal domain-like [52898] (3)
  elaborated common fold
12. Glutathione peroxidase-like [52901] (42)
13. Thioredoxin-like 2Fe-2S ferredoxin [52918] (1)
14. ArsC-like [69518] (3)
  Pfam 03960
15. Txnl5-like [110612] (2)
  Pfam 06110
16. YuzD-like [117605] (1)
  Pfam 07315
17. YKR049C-like [142395] (1)
  Pfam 07955; DUF1687; contains an all-alpha insert subdomain
18. Atu2684-like [142398] (1)
  Pfam 06764; DUF1223; contains extra C-terminal domain of Immunoglobulin-like fold (scop_cf 48725), intimately associated with the N-terminal thioredixin-like domain and contributing to the active site
19. HyaE-like [142401] (2)
  Pfam 07449; have evolved a different function; contains no conserved cysteine residues
20. NQO2-like [142405] (1)
  complex I 24 kDa subunit; contains 2Fe-2S cluster in the active site; includes extra N-terminal four-helical bundle
21. Mitochondrial ribosomal protein L51/S25/CI-B8 domain [142408] (1)
  Pfam 05047; "minimalized" version of the thioredoxin-like fold; variable positions for cysteine residues in the putative active site
22. Selenoprotein W-related [142411] (3)
  Pfam 05169; "minimalized" version of the thioredoxin-like fold
23. UAS domain [159589] (1)
  SMART 00594
RNA 3'-terminal phosphate cyclase, RPTC, insert domain [52913] (1)
uperfamily
1. RNA 3'-terminal phosphate cyclase, RPTC, insert domain [52914] (1)