Structural Classification of Proteins

Fold: Chelatase-like

: duplication: tandem repeat of two domains; 3 layers (a/b/a); parallel beta-sheet of 4 strands, order 2134

Lineage:

Root: scop
Class: Alpha and beta proteins (a/b) [51349]
Mainly parallel beta sheets (beta-alpha-beta units)
Fold: Chelatase-like [53799]
duplication: tandem repeat of two domains; 3 layers (a/b/a); parallel beta-sheet of 4 strands, order 2134

Superfamilies:

Chelatase [53800] (3)
interdomain linker is short; swapping of C-terminal helices between the two domains
uperfamily
1. Ferrochelatase [53801] (3)
  1. Ferrochelatase [53802]
    1. Bacillus subtilis [TaxId: 1423] [53803] (8)
    2. Human (Homo sapiens) [TaxId: 9606] [64189] (3)
    3. Baker's yeast (Saccharomyces cerevisiae) [TaxId: 4932] [82556] (2)
2. Cobalt chelatase CbiK [53804] (1)
  1. Cobalt chelatase CbiK [53805]
    1. Salmonella typhimurium [TaxId: 90371] [53806] (1)
3. CbiX-like [110742] (1)
  Pfam 01903; single-domain protein; forms the C-terminal helix-swapped dimer similar to the CbiK subunit
  1. Sirohydrochlorin cobaltochelatase CbiX [110743]
    1. Archaeon Archaeoglobus fulgidus [TaxId: 2234] [110744] (3)
      SQ O29537
"Helical backbone" metal receptor [53807] (4)
contains a long alpha helical insertion in the interdomain linker
uperfamily
1. Periplasmic ferric siderophore binding protein FhuD [53808] (1)
  1. Periplasmic ferric siderophore binding protein FhuD [53809]
    1. Escherichia coli [TaxId: 562] [53810] (4)
2. TroA-like [53811] (5)
  1. Periplasmic zinc binding protein TroA [53812]
    1. Treponema pallidum [TaxId: 160] [53813] (2)
  2. Periplasmic zinc binding protein ZnuA [102688]
    1. Synechocystis sp. pcc 6803 [TaxId: 1148] [102689] (1)
  3. Pneumococcal surface antigen PssA [53814]
    1. Pneumococcus (Streptococcus pneumoniae) [TaxId: 1313] [53815] (1)
  4. Vitamin B12 binding protein BtuF [82557]
    1. Escherichia coli [TaxId: 562] [82558] (4)
  5. Mn transporter MntC [142787]
    1. Synechocystis sp. pcc 6803 [TaxId: 1148] [142788] (2)
      SQ Q79EF9 49-327
3. Nitrogenase iron-molybdenum protein [53816] (6)
  contains three domains of this fold; "Helical backbone" holds domains 2 and 3
  both chains are homologous; the inter-chain arrangement of domains 1 is similar to the intra-chain arrangement of domains 2 and 3
  1. Nitrogenase iron-molybdenum protein, alpha chain [81402]
    1. Clostridium pasteurianum [TaxId: 1501] [81396] (1)
    2. Azotobacter vinelandii [TaxId: 354] [81398] (18)
    3. Klebsiella pneumoniae [TaxId: 573] [81400] (4)
  2. Nitrogenase iron-molybdenum protein, beta chain [81401]
    both chains are homologous; the inter-chain arrangement of domains 1 is similar to the intra-chain arrangement of domains 2 and 3
    1. Clostridium pasteurianum [TaxId: 1501] [81395] (1)
    2. Azotobacter vinelandii [TaxId: 354] [81397] (18)
    3. Klebsiella pneumoniae [TaxId: 573] [81399] (4)
4. TM0189-like [142789] (3)
  Part of Pfam 01497 that include some other superfamily members
  1. Putative iron(III) transporter TM0189 [142790]
    1. Thermotoga maritima [TaxId: 2336] [142791] (2)
      SQ Q9WY32 25-358
  2. Enterochelin uptake protein CeuE [142792]
    1. Campylobacter jejuni [TaxId: 197] [142793] (2)
      SQ Q0P8Q4 44-330
  3. Iron-uptake system-binding protein FeuA [159798]
    1. Bacillus subtilis [TaxId: 1423] [159799] (1)
      SQ P40409 39-315
PrpR receptor domain-like [159800] (1)
recent PDB entry 2q5c belongs to this superfamily
1. PrpR receptor domain-like [159801] (1)
  N-terminal domain corresponds to Pfam 06506; C-terminal domain, assigned to Pfam 00158, is distinct from other structures of this Pfam family
  1. Propionate catabolism operon regulatory protein PrpR [159802]
    1. Escherichia coli [TaxId: 562] [159803] (4)
      SQ P77743 11-196