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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

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Evolutionary classification of protein domain structures

alpha arraysalpha-helix arrays with mainly perpendicular helices

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

X: Ntn/PP2C
H: Ntn
T: Proteasome subunits
F: Proteasome

PF00227 CL0052

Representatives:

e1g3kA1[A:1-173] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ATP-DEPENDENT PROTEASE HSLV ; ligands: NA ; X-RAY DIFFRACTION 1.9Å

e1ryp11[1:-9-213] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

20S PROTEASOME ; ligands: MG ; X-RAY DIFFRACTION 1.9Å

e1ryp21[2:-8-225] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

20S PROTEASOME ; ligands: MG ; X-RAY DIFFRACTION 1.9Å

e1rypH1[H:-9-196] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

20S PROTEASOME ; ligands: MG ; X-RAY DIFFRACTION 1.9Å

e1rypJ1[J:-8-196] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

20S PROTEASOME ; ligands: MG ; X-RAY DIFFRACTION 1.9Å

e1rypK1[K:-1-197] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

20S PROTEASOME ; X-RAY DIFFRACTION 1.9Å

e1rypL1[L:1-212] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

20S PROTEASOME ; ligands: MG ; X-RAY DIFFRACTION 1.9Å

e1yarH1[H:1-203] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome beta subunit ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.9Å

e4qv1Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e4qv3L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qv3Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qv4L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e4qv4Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; X-RAY DIFFRACTION 2.7Å

e4qv5L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e4qv5Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; X-RAY DIFFRACTION 2.7Å

e4qv6L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qv6Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qv7L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qv7Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qv8L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qv8Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qv9L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qv9Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qvlL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvlZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvmL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvmZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvnL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2 ; X-RAY DIFFRACTION 2.9Å

e4qvnZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.9Å

e4qvpL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.3Å

e4qvpZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.3Å

e4qvqL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.6Å

e4qvqZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.6Å

e4qvvL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvvZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2 ; X-RAY DIFFRACTION 2.8Å

e4qvwL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 3.0Å

e4qvwZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 3.0Å

e4qvyL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.5Å

e4qvyZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.5Å

e4qw0L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qw0Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qw1L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.9Å

e4qw1Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.9Å

e4qw3L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2 ; X-RAY DIFFRACTION 2.9Å

e4qw3Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.9Å

e4qw4L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 2.8Å

e4qw4Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 2.8Å

e4qw5L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES ; X-RAY DIFFRACTION 3.0Å

e4qw5Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 3.0Å

e4qw6L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 2.9Å

e4qw6Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES ; X-RAY DIFFRACTION 2.9Å

e4qw7L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 2.7Å

e4qw7Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 2.7Å

e4qwfL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 3.0Å

e4qwfZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES,MG ; X-RAY DIFFRACTION 3.0Å

e4qwgL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.6Å

e4qwgZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV ; X-RAY DIFFRACTION 2.6Å

e4qwiL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.6Å

e4qwiZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.6Å

e4qwjL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.9Å

e4qwjZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.9Å

e4qwkL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.8Å

e4qwkZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.8Å

e4qwlL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.6Å

e4qwlZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.6Å

e4qwrL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.9Å

e4qwrZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MG ; X-RAY DIFFRACTION 2.9Å

e4qwsL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES ; X-RAY DIFFRACTION 3.0Å

e4qwsZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 3BV,MES ; X-RAY DIFFRACTION 3.0Å

e4qwuL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 3.0Å

e4qwuZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: BO2,MG ; X-RAY DIFFRACTION 3.0Å

e4qwxL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.9Å

e4qwxZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.9Å

e4qxjL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.8Å

e4qxjZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES ; X-RAY DIFFRACTION 2.8Å

e4qz0L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 3.0Å

e4qz0Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 3.0Å

e4qz1L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES ; X-RAY DIFFRACTION 3.0Å

e4qz1Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES ; X-RAY DIFFRACTION 3.0Å

e4qz2L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.7Å

e4qz2Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.7Å

e4qz3L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.8Å

e4qz3Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.8Å

e4qz4L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 3.0Å

e4qz4Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 3.0Å

e4qz5L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.8Å

e4qz5Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.8Å

e4qz6L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.9Å

e4qz6Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.9Å

e4qz7L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.8Å

e4qz7Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MG ; X-RAY DIFFRACTION 2.8Å

e4qzwL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qzwZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qzxL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.6Å

e4qzxZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: 04C,MES,MG ; X-RAY DIFFRACTION 2.6Å

e4qzzL1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qzzZ1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4r00L1[L:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4r00Z1[Z:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-6 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4quxa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4quyM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4quya1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qv0M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.1Å

e4qv0a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.1Å

e4qv1M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.5Å

e4qv1a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e4qv3M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qv3a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qv4M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.7Å

e4qv4a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e4qv5M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.7Å

e4qv5a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e4qv6M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qv6a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qv7M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qv7a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qv8M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qv8a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qv9M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qv9a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qvlM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qvla1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qvmM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qvma1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qvnM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qvna1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qvpM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.3Å

e4qvpa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.3Å

e4qvqM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qvqa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qvvM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qvva1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qvwM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qvwa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qvyM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-7 ; X-RAY DIFFRACTION 2.5Å

e4qvya1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-7 ; ligands: MG ; X-RAY DIFFRACTION 2.5Å

e4qw0M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qw0a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qw1M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qw1a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qw3M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qw3a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qw4M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qw4a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qw5M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qw5a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qw6M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qw6a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qw7M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.7Å

e4qw7a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e4qwfM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qwfa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qwgM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qwga1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qwiM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qwia1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qwjM1[M:1-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qwja1[a:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qwkM1[M:1-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qwka1[a:1-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qwlM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qwla1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qwrM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qwra1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qwsM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qwsa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qwuM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qwua1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qwxM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-7 ; X-RAY DIFFRACTION 2.9Å

e4qwxa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qxjM1[M:1-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qxja1[a:1-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qz0M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qz0a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qz1M1[M:1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qz1a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qz2M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.7Å

e4qz2a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.7Å

e4qz3M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qz3a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qz4M1[M:1-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qz4a1[a:1-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qz5M1[M:1-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qz5a1[a:1-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qz6M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qz6a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4qz7M1[M:1-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4qz7a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qzwM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 3.0Å

e4qzwa1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4qzxM1[M:1-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.6Å

e4qzxa1[a:1-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e4qzzM1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.9Å

e4qzza1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.9Å

e4r00M1[M:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; X-RAY DIFFRACTION 2.8Å

e4r00a1[a:1-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-7 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4quxY1[Y:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e4quyK1[K:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4quyY1[Y:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qv0K1[K:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 3.1Å

e4qv0Y1[Y:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 3.1Å

e4qv6K1[K:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qv6Y1[Y:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: MG ; X-RAY DIFFRACTION 2.8Å

e4qvvK1[K:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvvY1[Y:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.8Å

e4qvwK1[K:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: BO2,MG ; X-RAY DIFFRACTION 3.0Å

e4qvwY1[Y:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome subunit beta type-5 ; ligands: BO2,MG ; X-RAY DIFFRACTION 3.0Å

e4qvyK1[K:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME SUBUNIT BETA TYPE-5 ; ligands: BO2,MG ; X-RAY DIFFRACTION 2.5Å

Previous Next

e5nyfA1[A:1-243] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Anbu ; ligands: NA,PO4 ; X-RAY DIFFRACTION 2.2Å

e1q5qA1[A:9-235] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME ALPHA-TYPE SUBUNIT 1 ; X-RAY DIFFRACTION 2.6Å

e1q5qH1[H:1-224] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEASOME BETA-TYPE SUBUNIT 1 ; X-RAY DIFFRACTION 2.6Å

F: Unmapped domains

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.

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