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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

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

X: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase
H: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase
T: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase
F: LYTB

PF02401

Representatives:

e3dnfA1[A:193-281] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: F3S ; X-RAY DIFFRACTION 1.65Å

e3dnfA2[A:1-95] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: F3S ; X-RAY DIFFRACTION 1.65Å

e3dnfA3[A:96-192] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: F3S,GOL ; X-RAY DIFFRACTION 1.65Å

e3dnfB2[B:96-192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: F3S,GOL ; X-RAY DIFFRACTION 1.65Å

e3t0fA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,H6P ; X-RAY DIFFRACTION 1.9Å

e4eb3A2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: 0O3,SF4 ; X-RAY DIFFRACTION 1.9Å

e4eb3B2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: 0O3,SF4 ; X-RAY DIFFRACTION 1.9Å

e3szoA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: H6P,SF4 ; X-RAY DIFFRACTION 1.6Å

e3szoB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: H6P,SF4 ; X-RAY DIFFRACTION 1.6Å

e3szuA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,H6P ; X-RAY DIFFRACTION 1.4Å

e3szuB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,H6P ; X-RAY DIFFRACTION 1.4Å

e3urkA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CG,SF4 ; X-RAY DIFFRACTION 1.5Å

e3urkB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CG,SF4 ; X-RAY DIFFRACTION 1.5Å

e3uv6A2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CH,SF4 ; X-RAY DIFFRACTION 1.7Å

e3uv6B2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CH,SF4 ; X-RAY DIFFRACTION 1.7Å

e3kemA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,IPE ; X-RAY DIFFRACTION 2.0Å

e3kemB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,IPE ; X-RAY DIFFRACTION 2.0Å

e3kefA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: DMA,F3S ; X-RAY DIFFRACTION 1.7Å

e3kefB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: DMA,F3S ; X-RAY DIFFRACTION 1.7Å

e3t0gA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,H6P ; X-RAY DIFFRACTION 2.1Å

e3t0gB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,H6P ; X-RAY DIFFRACTION 2.1Å

e3zgnA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10G,SF4 ; X-RAY DIFFRACTION 1.95Å

e3zgnB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10G,SF4 ; X-RAY DIFFRACTION 1.95Å

e3utdA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CJ,F3S ; X-RAY DIFFRACTION 1.7Å

e3utdB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CJ,F3S ; X-RAY DIFFRACTION 1.7Å

e3f7tB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,PO4,POP ; X-RAY DIFFRACTION 1.8Å

e3zglA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10E,SF4 ; X-RAY DIFFRACTION 1.70Å

e3zglB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10E,SF4 ; X-RAY DIFFRACTION 1.70Å

e3ke9A2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: IPE,SF4 ; X-RAY DIFFRACTION 1.9Å

e3ke9B2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: IPE,SF4 ; X-RAY DIFFRACTION 1.9Å

e4h4eA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10G,SF4 ; X-RAY DIFFRACTION 1.7Å

e4h4eB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10G,SF4 ; X-RAY DIFFRACTION 1.7Å

e3uwmA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0JX,0K2,SF4 ; X-RAY DIFFRACTION 1.8Å

e3uwmB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0JX,0K2,SF4 ; X-RAY DIFFRACTION 1.8Å

e4h4cA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10D,SF4 ; X-RAY DIFFRACTION 1.8Å

e4h4cB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10D,SF4 ; X-RAY DIFFRACTION 1.8Å

e3uv7A2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CN,SF4 ; X-RAY DIFFRACTION 1.6Å

e3uv7B2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CN,SF4 ; X-RAY DIFFRACTION 1.6Å

e3szlA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: H6P,SF4 ; X-RAY DIFFRACTION 1.6Å

e3szlB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: H6P,SF4 ; X-RAY DIFFRACTION 1.6Å

e3uv3A2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CM,SF4 ; X-RAY DIFFRACTION 1.6Å

e3uv3B2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0CM,SF4 ; X-RAY DIFFRACTION 1.6Å

e3utcA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0JX,SF4 ; X-RAY DIFFRACTION 1.9Å

e3utcB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 0JX,SF4 ; X-RAY DIFFRACTION 1.9Å

e3t0fB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,H6P ; X-RAY DIFFRACTION 1.9Å

e4h4dA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10E,SF4 ; X-RAY DIFFRACTION 1.35Å

e4h4dB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 10E,SF4 ; X-RAY DIFFRACTION 1.35Å

e3ke8A2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: EIP,SF4 ; X-RAY DIFFRACTION 1.7Å

e3ke8B2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: EIP,SF4 ; X-RAY DIFFRACTION 1.7Å

e3kelA2[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,POP ; X-RAY DIFFRACTION 1.8Å

e3kelB2[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,POP ; X-RAY DIFFRACTION 1.8Å

e4n7bA2[A:98-194] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LytB ; ligands: F3S,NA,SO4 ; X-RAY DIFFRACTION 2.198Å

e4muxA3[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: 2E4,SF4 ; X-RAY DIFFRACTION 1.7Å

e4muxB3[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-hydroxy-3-methylbut-2-enyl diphosphate reductase ; ligands: 2E4,SF4 ; X-RAY DIFFRACTION 1.7Å

e4muyA3[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 2E5,F3S ; X-RAY DIFFRACTION 1.8Å

e4muyB3[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 2E5,F3S ; X-RAY DIFFRACTION 1.8Å

e4mv0A3[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 2E6,F3S ; X-RAY DIFFRACTION 1.9Å

e4mv0B3[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 2E6,F3S ; X-RAY DIFFRACTION 1.9Å

e4mv5A3[A:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 2E7,F3S ; X-RAY DIFFRACTION 1.9Å

e4mv5B3[B:96-195] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: 2E7,F3S ; X-RAY DIFFRACTION 1.9Å

e3f7tA1[A:1-95] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,PO4,POP ; X-RAY DIFFRACTION 1.8Å

e3f7tA2[A:96-195] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,PO4,POP ; X-RAY DIFFRACTION 1.8Å

e3f7tA3[A:196-310] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

4-HYDROXY-3-METHYLBUT-2-ENYL DIPHOSPHATE REDUCTASE ; ligands: F3S,PO4,POP ; X-RAY DIFFRACTION 1.8Å

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