Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices




Representatives:
e2ce7A2[A:411-603]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.440Å
e2di4A1[A:406-597] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH HOMOLOG ; ligands: HG ; X-RAY DIFFRACTION 2.79Å
e2di4B1[B:407-597] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH HOMOLOG ; ligands: HG ; X-RAY DIFFRACTION 2.79Å
e2ceaC2[C:411-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.700Å
e2ce7C2[C:411-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.440Å
e3kdsE2[E:406-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cell division protein FtsH ; ligands: NHX,ZN ; X-RAY DIFFRACTION 2.600Å
e3kdsF1[F:406-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cell division protein FtsH ; ligands: NHX,ZN ; X-RAY DIFFRACTION 2.600Å
e3kdsG1[G:406-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Cell division protein FtsH ; ligands: NHX,ZN ; X-RAY DIFFRACTION 2.600Å
e4eiwE6[E:406-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; X-RAY DIFFRACTION 3.9Å
e4eiwA7[A:406-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; X-RAY DIFFRACTION 3.9Å
e2dhrA7[A:406-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FtsH ; X-RAY DIFFRACTION 3.9Å
e2dhrC7[C:406-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FtsH ; X-RAY DIFFRACTION 3.9Å
e2dhrE7[E:406-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FtsH ; X-RAY DIFFRACTION 3.9Å
e2dhrF7[F:403-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FtsH ; X-RAY DIFFRACTION 3.9Å
e2dhrB15[B:403-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FtsH ; X-RAY DIFFRACTION 3.9Å
e2dhrD12[D:403-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FtsH ; X-RAY DIFFRACTION 3.9Å
e4eiwC12[C:406-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; X-RAY DIFFRACTION 3.9Å
e4eiwD15[D:403-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; X-RAY DIFFRACTION 3.9Å
e4eiwB9[B:403-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; X-RAY DIFFRACTION 3.9Å
e4eiwF15[F:403-600] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; X-RAY DIFFRACTION 3.9Å
e2ce7D1[D:408-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.440Å
e2ce7E3[E:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.440Å
e2ceaA3[A:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.700Å
e2ceaE3[E:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.700Å
e2ce7B2[B:392-605] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.440Å
e2ce7F2[F:392-605] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.440Å
e2ceaB2[B:392-605] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.700Å
e2ceaD2[D:392-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.700Å
e2ceaF2[F:392-605] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CELL DIVISION PROTEIN FTSH ; ligands: ZN ; X-RAY DIFFRACTION 2.700Å
e4ww0C3[C:380-607] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 2.96Å
e4z8xC2[C:380-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: SO4,ZN ; X-RAY DIFFRACTION 3.25Å
e4ww0B2[B:379-607] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 2.96Å
e4z8xA3[A:379-608] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: SO4,ZN ; X-RAY DIFFRACTION 3.25Å
e4z8xB1[B:379-608] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: SO4,ZN ; X-RAY DIFFRACTION 3.25Å
e4ww0A2[A:405-608] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 2.96Å
e6az0A2[A:509-717] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial inner membrane i-AAA protease supercomplex subunit YME1 ; ligands: ZN ; ELECTRON MICROSCOPY
e6az0B1[B:509-717] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial inner membrane i-AAA protease supercomplex subunit YME1 ; ligands: ZN ; ELECTRON MICROSCOPY
e6az0C3[C:509-717] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial inner membrane i-AAA protease supercomplex subunit YME1 ; ligands: ZN ; ELECTRON MICROSCOPY
e6az0D2[D:509-717] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial inner membrane i-AAA protease supercomplex subunit YME1 ; ligands: ZN ; ELECTRON MICROSCOPY
e6az0E3[E:509-717] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial inner membrane i-AAA protease supercomplex subunit YME1 ; ligands: ZN ; ELECTRON MICROSCOPY
e6az0F1[F:509-717] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mitochondrial inner membrane i-AAA protease supercomplex subunit YME1 ; ligands: ZN ; ELECTRON MICROSCOPY
e6gcnB1[B:380-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ALA,ZN ; X-RAY DIFFRACTION 2.949Å
e6gcnA2[A:380-607] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ALA,ZN ; X-RAY DIFFRACTION 2.949Å
e6gcnC1[C:380-608] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ALA,ZN ; X-RAY DIFFRACTION 2.949Å
e6gcnD1[D:380-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ALA,ZN ; X-RAY DIFFRACTION 2.949Å
e6gcoA1[A:380-607] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.320Å
e6gcoB3[B:380-606] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.320Å
e6nyyE2[E:545-763] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AFG3-like protein 2 ; ligands: ZN ; ELECTRON MICROSCOPY
e6nyyF2[F:545-754] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AFG3-like protein 2 ; ligands: ZN ; ELECTRON MICROSCOPY
e6nyyA1[A:543-753] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AFG3-like protein 2 ; ligands: ZN ; ELECTRON MICROSCOPY
e6nyyB1[B:545-779] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AFG3-like protein 2 ; ligands: ZN ; ELECTRON MICROSCOPY
e6nyyC3[C:545-779] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AFG3-like protein 2 ; ligands: ZN ; ELECTRON MICROSCOPY
e6nyyD1[D:545-779] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AFG3-like protein 2 ; ligands: ZN ; ELECTRON MICROSCOPY
e7tdoA1[A:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ELECTRON MICROSCOPY
e7tdoB2[B:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ELECTRON MICROSCOPY
e7tdoC3[C:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ELECTRON MICROSCOPY
e7tdoD1[D:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ELECTRON MICROSCOPY
e7tdoE2[E:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ELECTRON MICROSCOPY
e7tdoF3[F:394-603] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ELECTRON MICROSCOPY
e7wi4A3[A:383-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; ELECTRON MICROSCOPY
e7wi4D1[D:383-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; ELECTRON MICROSCOPY
e7wi4E1[E:383-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; ELECTRON MICROSCOPY
e7wi4F3[F:383-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; ELECTRON MICROSCOPY
e7wi4B3[B:383-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; ELECTRON MICROSCOPY
e7wi4C3[C:383-604] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; ELECTRON MICROSCOPY
e7zbhA2[A:405-603] Image Pymol Jmol Links: PDB, SCOP, CATH
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.30Å
e7zbhB2[B:405-603] Image Pymol Jmol Links: PDB, SCOP, CATH
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.30Å
e7zbhD2[D:405-603] Image Pymol Jmol Links: PDB, SCOP, CATH
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.30Å
e7zbhF1[F:405-603] Image Pymol Jmol Links: PDB, SCOP, CATH
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.30Å
e7zbhI2[I:405-603] Image Pymol Jmol Links: PDB, SCOP, CATH
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.30Å
e7zbhK2[K:405-603] Image Pymol Jmol Links: PDB, SCOP, CATH
ATP-dependent zinc metalloprotease FtsH ; ligands: ZN ; X-RAY DIFFRACTION 3.30Å

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
alpha bundlesalpha-helix bundles with mainly parallel helices
alpha superhelicesrepeating alpha-helix hairpins form a superhelix
alpha duplicates or obligate multimersalpha duplicates or monomers associate together to form a compact domain
alpha complex topologyalpha domain with complex and unique topology that cannot be described as array or bundle or superhelix
beta barrelssingle beta-sheet folded upon itself to form a barrel
beta meanderssingle beta-sheet with mainly meander topology
beta sandwichestwo beta-sheets stacked together to form a sandwich
beta duplicates or obligate multimersbeta duplicates or monomers associate together to form a compact domain
beta complex topologybeta domains with complex and unique topology that cannot be described as barrel or sandwich or meander
a+b two layersone alpha-helix layer and one beta-sheet layer
a+b three layersone mainly antiparallel beta-sheet layer sandwiched between two alpha-helix layers
a+b four layerstwo beta-sheet layers sandwiched between two alpha-helix layers
a+b complex topologyalpha and beta domain with complex and unique topology that cannot be described in layers
a+b duplicates or obligate multimersalpha and beta duplicates or monomers associated together to form a compact domain
a/b barrelsrepeating beta-alpha units form a barrel
a/b three-layered sandwichesrepeating beta-alpha units form a sandwich with a mainly parallel beta-sheet layer stacked between two alpha-helix layers
mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions
few secondary structure elementsstabilized by cofactors or disulfides
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes