Structural Classification of Proteins

Superfamily: "Helical backbone" metal receptor

: contains a long alpha helical insertion in the interdomain linker
uperfamily

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
Superfamily: "Helical backbone" metal receptor [53807]
contains a long alpha helical insertion in the interdomain linker
uperfamily

Families:

Periplasmic ferric siderophore binding protein FhuD [53808] (1)
1. Periplasmic ferric siderophore binding protein FhuD [53809]
  1. Escherichia coli [TaxId: 562] [53810] (4)
    1. 1k2v
      complexed with desferal
      complexed with def
      1. chain n [72014]
    2. 1esz
      complexed with coprogen
      complexed with cpo
      1. chain a [70132]
    3. 1efd
      complexed with gallichrome
      complexed with gcr
      1. chain n [35597]
    4. 1k7s
      complexed with albomycin-delta 2
      complexed with alb
      1. chain n [72105]
TroA-like [53811] (5)
1. Periplasmic zinc binding protein TroA [53812]
  1. Treponema pallidum [TaxId: 160] [53813] (2)
    1. 1toa
      complexed with gol, zn
      1. chain a [35598]
      2. chain b [35599]
    2. 1k0f
      zn(ii)-free form
      1. chain a [71974]
2. Periplasmic zinc binding protein ZnuA [102688]
  1. Synechocystis sp. pcc 6803 [TaxId: 1148] [102689] (1)
    1. 1pq4
      complexed with zn
      1. chain a [94995]
      2. chain b [94996]
3. Pneumococcal surface antigen PssA [53814]
  1. Pneumococcus (Streptococcus pneumoniae) [TaxId: 1313] [53815] (1)
    1. 1psz
      complexed with zn; mutant
      1. chain a [35600]
4. Vitamin B12 binding protein BtuF [82557]
  1. Escherichia coli [TaxId: 562] [82558] (4)
    1. 1n2z
      complexed with cd, cl, cnc, pg4
      1. chain a [79865]
      2. chain b [79866]
    2. 1n4a
      complexed with cnc, mse
      1. chain a [85317]
      2. chain b [85318]
    3. 2qi9
      automatically matched to d1n2za_
      complexed with 1pe, peg, po4, so4; mutant
      1. region f:22-266 [150803]
    4. 1n4d
      complexed with mse
      1. chain a [85319]
      2. chain b [85320]
5. Mn transporter MntC [142787]
  1. Synechocystis sp. pcc 6803 [TaxId: 1148] [142788] (2)
    SQ Q79EF9 49-327
    1. 1xvl
      complexed with mn
      1. region a:49-327 [122380]
    2. 1xvl
      automatically matched to 1XVL A:49-327
      complexed with mn
      1. region b:53-323 [122381]
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)
    1. 1mio
      complexed with ca, cfm, clp, hca
      1. chain a [35601]
      2. chain c [35603]
  2. Azotobacter vinelandii [TaxId: 354] [81398] (18)
    1. 1m1n
      complexed with ca, cfn, clf, hca
      1. chain a [78417]
      2. chain c [78419]
      3. chain e [78421]
      4. chain g [78423]
    2. 2afh
      automatically matched to d1m34a_
      complexed with 1pe, ca, cfn, clf, hca, na, p6g, peg, pg4, pge, sf4, trs
      1. region a:5-480 [126679]
    3. 2afh
      automatically matched to d1m34a_
      complexed with 1pe, ca, cfn, clf, hca, na, p6g, peg, pg4, pge, sf4, trs
      1. region c:5-480 [126681]
    4. 2min
      complexed with ca, cfm, clf, hca
      1. chain a [35609]
      2. chain c [35611]
    5. 3min
      complexed with ca, cfm, clf, hca
      1. chain a [35605]
      2. chain c [35607]
    6. 1m34
      complexed with adp, alf, ca, cfm, clf, fs4, hca, mg
      1. chain a [78515]
      2. chain c [78517]
      3. chain i [78523]
      4. chain k [78525]
    7. 2afk
      automatically matched to d1m34a_
      complexed with acp, ca, cfn, clf, hca, mg, sf4
      1. region a:5-480 [126694]
    8. 2afk
      automatically matched to d1m34a_
      complexed with acp, ca, cfn, clf, hca, mg, sf4
      1. region c:5-480 [126696]
    9. 1g20
      complexed with ca, cfm, clf, fs4, hca
      1. chain a [35613]
      2. chain c [35615]
    10. 1fp4
      complexed with ca, cfm, clp, hca; mutant
      1. chain a [76187]
      2. chain c [76189]
    11. 1l5h
      FeMo-cofactor deficient
      complexed with ca, clf
      1. chain a [73590]
    12. 1n2c
      complexed with adp, alf, ca, cfm, clf, fs4, hca, mg
      1. chain a [35617]
      2. chain c [35619]
    13. 2afi
      automatically matched to d1m34a_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region a:5-480 [126685]
    14. 2afi
      automatically matched to d1m34a_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region c:5-480 [126687]
    15. 2afi
      automatically matched to d1m34a_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region i:5-480 [126689]
    16. 2afi
      automatically matched to d1m34a_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region k:5-480 [126691]
    17. 1g21
      complexed with atp, ca, cfm, clf, fs4, hca, mg
      1. chain a [35621]
      2. chain c [35623]
    18. 1m1y
      chemically crosslinked structure
      complexed with ca, cfm, clf, fs4, hca
      1. chain a [78441]
      2. chain c [78443]
      3. chain i [78449]
      4. chain k [78451]
  3. Klebsiella pneumoniae [TaxId: 573] [81400] (4)
    1. 1qh8
      1. chain a [35633]
      2. chain c [35635]
    2. 1qgu
      1. chain a [35625]
      2. chain c [35627]
    3. 1qh1
      1. chain a [35629]
      2. chain c [35631]
    4. 1h1l
      complexed with cfm, cit, cl, clf, mg; mutant
      1. chain a [70851]
      2. chain c [70853]
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)
    1. 1mio
      complexed with ca, cfm, clp, hca
      1. chain b [35602]
      2. chain d [35604]
  2. Azotobacter vinelandii [TaxId: 354] [81397] (18)
    1. 1m1n
      complexed with ca, cfn, clf, hca
      1. chain b [78418]
      2. chain d [78420]
      3. chain f [78422]
      4. chain h [78424]
    2. 2afh
      automatically matched to d1fp4b_
      complexed with 1pe, ca, cfn, clf, hca, na, p6g, peg, pg4, pge, sf4, trs
      1. region b:2-523 [126680]
    3. 2afh
      automatically matched to d1fp4b_
      complexed with 1pe, ca, cfn, clf, hca, na, p6g, peg, pg4, pge, sf4, trs
      1. region d:2-523 [126682]
    4. 2min
      complexed with ca, cfm, clf, hca
      1. chain b [35610]
      2. chain d [35612]
    5. 3min
      complexed with ca, cfm, clf, hca
      1. chain b [35606]
      2. chain d [35608]
    6. 1m34
      complexed with adp, alf, ca, cfm, clf, fs4, hca, mg
      1. chain b [78516]
      2. chain d [78518]
      3. chain j [78524]
      4. chain l [78526]
    7. 2afk
      automatically matched to d1fp4b_
      complexed with acp, ca, cfn, clf, hca, mg, sf4
      1. region b:2-523 [126695]
    8. 2afk
      automatically matched to d1fp4b_
      complexed with acp, ca, cfn, clf, hca, mg, sf4
      1. region d:2-523 [126697]
    9. 1g20
      complexed with ca, cfm, clf, fs4, hca
      1. chain b [35614]
      2. chain d [35616]
    10. 1fp4
      complexed with ca, cfm, clp, hca; mutant
      1. chain b [76188]
      2. chain d [76190]
    11. 1l5h
      FeMo-cofactor deficient
      complexed with ca, clf
      1. chain b [73591]
    12. 1n2c
      complexed with adp, alf, ca, cfm, clf, fs4, hca, mg
      1. chain b [35618]
      2. chain d [35620]
    13. 2afi
      automatically matched to d1fp4b_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region b:2-523 [126686]
    14. 2afi
      automatically matched to d1fp4b_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region d:2-523 [126688]
    15. 2afi
      automatically matched to d1fp4b_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region j:2-523 [126690]
    16. 2afi
      automatically matched to d1fp4b_
      complexed with adp, ca, cfn, clf, hca, mg, sf4
      1. region l:2-523 [126692]
    17. 1g21
      complexed with atp, ca, cfm, clf, fs4, hca, mg
      1. chain b [35622]
      2. chain d [35624]
    18. 1m1y
      chemically crosslinked structure
      complexed with ca, cfm, clf, fs4, hca
      1. chain b [78442]
      2. chain d [78444]
      3. chain j [78450]
      4. chain l [78452]
  3. Klebsiella pneumoniae [TaxId: 573] [81399] (4)
    1. 1qh8
      1. chain b [35634]
      2. chain d [35636]
    2. 1qgu
      1. chain b [35626]
      2. chain d [35628]
    3. 1qh1
      1. chain b [35630]
      2. chain d [35632]
    4. 1h1l
      complexed with cfm, cit, cl, clf, mg; mutant
      1. chain b [70852]
      2. chain d [70854]
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
    1. 2etv
      complexed with cl, edo, mly, ni, po4
      1. region a:25-358 [132372]
    2. 2etv
      automatically matched to 2ETV A:25-358
      complexed with cl, edo, mly, ni, po4
      1. region b:25-358 [132373]
2. Enterochelin uptake protein CeuE [142792]
  1. Campylobacter jejuni [TaxId: 197] [142793] (2)
    SQ Q0P8Q4 44-330
    1. 2chu
      complexed with eca, fe, zn
      1. region a:24-310 [130485]
    2. 2chu
      automatically matched to 2CHU A:24-310
      complexed with eca, fe, zn
      1. region b:25-310 [130486]
3. Iron-uptake system-binding protein FeuA [159798]
  1. Bacillus subtilis [TaxId: 1423] [159799] (1)
    SQ P40409 39-315
    1. 2phz
      1. region a:20-296 [149488]