Structural Classification of Proteins

Family: Nitrogenase iron-molybdenum protein

: 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

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
Family: Nitrogenase iron-molybdenum protein [53816]
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

Protein Domains:

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]
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]