Structural Classification of Proteins

Superfamily: Homing endonucleases

: uperfamily

Lineage:

Root: scop
Class: Alpha and beta proteins (a+b) [53931]
Mainly antiparallel beta sheets (segregated alpha and beta regions)
Fold: Homing endonuclease-like [55603]
alpha-beta(2)-alpha-beta(2)-alpha; 2 layers: a/b; antiparallel sheet 1243
Superfamily: Homing endonucleases [55608]
uperfamily

Families:

Group I mobile intron endonuclease [55609] (5)
contains two extra helices in the C-terminal extension
1. DNA endonuclease I-CreI [55610]
  1. Chlamydomonas reinhardtii [TaxId: 3055] [55611] (13)
    SQ P05725 2-154 ! SQ P05725
    1. 1t9i
      complexed with ca, na; mutant
      1. chain a [112360]
      2. chain b [112361]
    2. 1g9z
      DNA product complex with magnesium
      complexed with mg
      1. chain a [60408]
      2. chain b [60409]
    3. 1n3f
      complexed with ca
      1. chain a [85299]
      2. chain b [85300]
      3. chain g [85301]
      4. chain h [85302]
    4. 2o7m
      automatically matched to d1bp7a_
      1. region a:2-153 [148668]
    5. 2o7m
      automatically matched to d1bp7a_
      1. region b:2-153 [148669]
    6. 1t9j
      mutant
      1. chain a [112362]
      2. chain b [112363]
    7. 1g9y
      DNA substrate complex with calcium
      complexed with ca
      1. chain a [60406]
      2. chain b [60407]
    8. 1n3e
      complexed with ca, na
      1. chain a [85295]
      2. chain b [85296]
      3. chain g [85297]
      4. chain h [85298]
    9. 1u0c
      complexed with mg
      1. chain a [112906]
      2. chain b [112907]
    10. 1u0d
      1. chain a [112908]
      2. chain b [112909]
    11. 1bp7
      protein/DNA complex; complexed with ca
      1. chain a [40568]
      2. chain b [40569]
      3. chain c [40570]
      4. chain d [40571]
    12. 1af5
      mutant
      1. chain a [40572]
    13. 1mow
      chimera with the I-dmoI N-domain
      complexed with gol, mg, so4
      1. region a:100-252 [79360]
      2. region d:600-752 [79362]
      3. region g:1100-1250 [79364]
      4. region j:1600-1752 [79366]
2. DNA endonuclease I-dmoI [55612]
  duplication: contains tandem repeat of this fold
  1. Archaeon Desulfurococcus mobilis [TaxId: 2274] [55613] (2)
    1. 1b24
      1. region a:7-99 [40573]
      2. region a:100-179 [40574]
    2. 1mow
      chimera of N-domain with I-CreI
      complexed with gol, mg, so4
      1. region a:5-99 [79361]
      2. region d:505-599 [79363]
      3. region g:1007-1098 [79365]
      4. region j:1506-1599 [79367]
3. DNA endonuclease I-MsoI [90006]
  1. Monomastix sp. cl-1997 [TaxId: 141716] [90007] (1)
    1. 1m5x
      complexed with ca
      1. chain a [84844]
      2. chain b [84845]
4. DNA endonuclease I-AniI [103141]
  duplication: contains tandem repeat of this fold
  1. Aspergillus nidulans [TaxId: 162425] [103142] (1)
    synonym: Emericella nidulans
    1. 1p8k
      complexed with mg
      1. region z:1-125 [94361]
      2. region z:126-254 [94362]
5. DNA endonuclease I-SceI [118055]
  duplication: contains tandem repeat of this fold
  1. Baker's yeast (Saccharomyces cerevisiae) [TaxId: 4932] [118056] (1)
    SQ P03882
    1. 1r7m
      complexed with ca
      1. region a:3-120 [111713]
      2. region a:121-225 [111714]
      3. region b:303-420 [111715]
      4. region b:421-525 [111716]
Intein endonuclease [55614] (2)
duplication: contains tandem repeat of this fold
1. VMA1-derived endonuclease (VDE) PI-SceI [55615]
  homing endonuclease with protein splicing activity
  1. Baker's yeast (Saccharomyces cerevisiae) [TaxId: 4932] [55616] (7)
    SQ P17255 284-737
    1. 1jva
      mutant
      1. region a:464-581 [77176]
      2. region a:582-698 [77177]
      3. region b:464-581 [77179]
      4. region b:582-698 [77180]
    2. 1ef0
      complexed with zn
      1. region a:181-298 [40577]
      2. region a:299-415 [40578]
      3. region b:181-298 [40579]
      4. region b:299-415 [40580]
    3. 1dfa
      1. region a:181-298 [40575]
      2. region a:299-415 [40576]
    4. 1vde
      1. region a:181-298 [40581]
      2. region a:299-415 [40582]
      3. region b:181-298 [40583]
      4. region b:299-415 [40584]
    5. 1um2
      mutant
      1. region a:464-581 [107947]
      2. region a:582-698 [107948]
      3. region b:464-581 [107950]
      4. region b:582-698 [107951]
    6. 1lwt
      complexed with mse
      1. region a:181-298 [78279]
      2. region a:299-415 [78280]
    7. 1lws
      complexed with ca, mse
      1. region a:181-298 [78276]
      2. region a:299-415 [78277]
2. PI-Pfui intein [55617]
  1. Archaeon Pyrococcus furiosus [TaxId: 2261] [55618] (1)
    1. 1dq3
      complexed with zn
      1. region a:129-226 [40585]
      2. region a:227-335 [40586]