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
Representatives:
e2o6pA1[A:29-150] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein C ; ligands: CL,HEM,ZN ; X-RAY DIFFRACTION 1.5Å
e7xldA1[A:544-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: NA ; X-RAY DIFFRACTION 1.65Å
e7xliA1[A:342-451] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: CL ; X-RAY DIFFRACTION 1.70Å
e5d1xE1[E:341-455] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; X-RAY DIFFRACTION 3.21Å
e5d1qE1[E:339-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; X-RAY DIFFRACTION 3.22Å
e2o6pB1[B:29-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein C ; ligands: CL,HEM,ZN ; X-RAY DIFFRACTION 1.5Å
e2iteB1[B:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: NHE ; X-RAY DIFFRACTION 1.500Å
e2itfD1[D:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: HEM ; X-RAY DIFFRACTION 1.900Å
e2itfC1[C:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: HEM ; X-RAY DIFFRACTION 1.900Å
e2itfA1[A:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: HEM ; X-RAY DIFFRACTION 1.900Å
e2o1aA1[A:18-138] Image Pymol Jmol Links: PDB, SCOP, CATH
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 1.6Å
e2itfB1[B:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: HEM ; X-RAY DIFFRACTION 1.900Å
e3qugA1[A:543-656] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; ligands: GIX,GOL,SO4 ; X-RAY DIFFRACTION 1.7Å
e3rtlA1[A:339-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.453Å
e3ovuB1[B:84-227] Image Pymol Jmol Links: PDB, SCOP, CATH
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 2.830Å
e3sz6A1[A:31-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Conserved domain protein ; ligands: CL ; X-RAY DIFFRACTION 1.8Å
e3sikA1[A:21-152] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Conserved domain protein ; ligands: HEM ; X-RAY DIFFRACTION 2.149Å
e2k78A1[A:25-150] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein C ; ligands: ZNH ; SOLUTION NMR
e2e7dA1[A:9-124] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hypothetical protein IsdH ; ligands: ACT,GOL,SO4 ; X-RAY DIFFRACTION 2.20Å
e3qzlA1[A:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: GOL,HEM ; X-RAY DIFFRACTION 1.300Å
e4h8qA1[A:5-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON TRANSPORT-ASSOCIATED DOMAIN PROTEIN ; ligands: HEM,ZN ; X-RAY DIFFRACTION 1.7Å
e2e7dB1[B:11-122] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hypothetical protein IsdH ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.20Å
e2z6fA1[A:544-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; ligands: HEM ; X-RAY DIFFRACTION 1.9Å
e3qzmA1[A:61-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: GOL,HEM,SO4 ; X-RAY DIFFRACTION 1.250Å
e3qzmB1[B:62-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: GOL,HEM,SO4 ; X-RAY DIFFRACTION 1.250Å
e3qznA1[A:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: GOL,HEM,SO4 ; X-RAY DIFFRACTION 2.0Å
e3qznB1[B:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: HEM,SO4 ; X-RAY DIFFRACTION 2.0Å
e3qznC1[C:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: HEM,SO4 ; X-RAY DIFFRACTION 2.0Å
e3qzoA1[A:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: HEM ; X-RAY DIFFRACTION 1.95Å
e3qzoB1[B:64-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: HEM ; X-RAY DIFFRACTION 1.95Å
e3qzoC1[C:62-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: GOL,HEM ; X-RAY DIFFRACTION 1.95Å
e3qzoD1[D:61-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: GOL,HEM ; X-RAY DIFFRACTION 1.95Å
e3qzpA1[A:61-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: COH,GOL,SO4 ; X-RAY DIFFRACTION 1.9Å
e3qzpB1[B:60-184] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN A ; ligands: COH,GOL,SO4 ; X-RAY DIFFRACTION 1.9Å
e3szkF1[F:89-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; X-RAY DIFFRACTION 3.01Å
e3szkC1[C:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; X-RAY DIFFRACTION 3.01Å
e3qugB1[B:543-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; ligands: GIX,GOL,SO4 ; X-RAY DIFFRACTION 1.7Å
e3quhA1[A:544-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; ligands: GOL,MNR ; X-RAY DIFFRACTION 2.7Å
e3quhB1[B:544-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
IRON-REGULATED SURFACE DETERMINANT PROTEIN H ; ligands: GOL,MNR ; X-RAY DIFFRACTION 2.7Å
e3rtlB1[B:339-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.453Å
e3rtlC1[C:339-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.453Å
e3rtlD1[D:339-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: CL,HEM,MG ; X-RAY DIFFRACTION 1.453Å
e3rurA1[A:341-455] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.700Å
e3rurB1[B:339-455] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.700Å
e3rurC1[C:340-456] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.700Å
e3rurD1[D:340-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM,MG ; X-RAY DIFFRACTION 1.700Å
e3sz6B1[B:26-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Conserved domain protein ; ligands: CL,GOL ; X-RAY DIFFRACTION 1.8Å
e3sikB1[B:21-143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Conserved domain protein ; ligands: HEM ; X-RAY DIFFRACTION 2.149Å
e4h8pA1[A:-5-112] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron Transport-associated domain protein ; ligands: HEM,ZN ; X-RAY DIFFRACTION 2.05Å
e3vtmA1[A:543-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: 3ZZ,GOL ; X-RAY DIFFRACTION 2.800Å
e4fc3E1[E:1-144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 2.260Å
e3vtmB1[B:543-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: 3ZZ,GOL ; X-RAY DIFFRACTION 2.800Å
e3vuaA1[A:543-657] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: ACT,GOL,SO4 ; X-RAY DIFFRACTION 1.850Å
e3vuaB1[B:543-656] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: GOL ; X-RAY DIFFRACTION 1.850Å
e3vuaC1[C:543-656] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: ACT,GOL,SO4 ; X-RAY DIFFRACTION 1.850Å
e3vuaD1[D:543-656] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: GOL ; X-RAY DIFFRACTION 1.850Å
e3vuaE1[E:543-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.850Å
e3vuaF1[F:543-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.850Å
e4ij2E1[E:326-464] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 4.240Å
e4ij2H1[H:326-464] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 4.240Å
e4ij2E2[E:544-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: HEM ; X-RAY DIFFRACTION 4.240Å
e3s48A2[A:87-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.05Å
e3s48B2[B:87-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.05Å
e2moqA1[A:125-272] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; SOLUTION NMR
e4ij2G3[G:542-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: HEM ; X-RAY DIFFRACTION 4.240Å
e4ij2G2[G:326-464] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 4.240Å
e4nlaA1[A:182-303] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: SO4 ; X-RAY DIFFRACTION 2.700Å
e4mypA1[A:183-303] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: GOL,HEM,ZN ; X-RAY DIFFRACTION 1.800Å
e4mypB1[B:187-303] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; ligands: GOL,HEM,ZN ; X-RAY DIFFRACTION 1.800Å
e4wjgD1[D:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.1Å
e4wjgI1[I:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.1Å
e4wjgN1[N:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.1Å
e4wjgS1[S:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.1Å
e4wjgX1[X:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.1Å
e4wjg31[3:86-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 3.1Å
e4xs0C3[C:523-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: HEM,SO4 ; X-RAY DIFFRACTION 2.550Å
e4xs0C1[C:326-464] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: CL ; X-RAY DIFFRACTION 2.550Å
e4ympC1[C:12-128] Image Pymol Jmol Links: PDB, SCOP, CATH
Internalin ; ligands: HEM ; X-RAY DIFFRACTION 3.15Å
e4ympA1[A:10-128] Image Pymol Jmol Links: PDB, SCOP, CATH
Internalin ; ligands: HEM ; X-RAY DIFFRACTION 3.15Å
e5d1zI1[I:119-267] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; X-RAY DIFFRACTION 3.17Å
e5d1zJ1[J:119-267] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; X-RAY DIFFRACTION 3.17Å
e5vmmE2[E:332-453] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated cell wall-anchored protein ; ligands: HEM ; X-RAY DIFFRACTION 3.600Å
e5vmmE1[E:125-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated cell wall-anchored protein ; X-RAY DIFFRACTION 3.600Å
e5vmmH1[H:125-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated cell wall-anchored protein ; X-RAY DIFFRACTION 3.600Å
e5vmmJ1[J:131-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated cell wall-anchored protein ; X-RAY DIFFRACTION 3.600Å
e5vmmF2[F:332-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated cell wall-anchored protein ; ligands: HEM ; X-RAY DIFFRACTION 3.600Å
e5vmmF3[F:127-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated cell wall-anchored protein ; X-RAY DIFFRACTION 3.600Å
e6tb2D1[D:534-655] Image Pymol Jmol Links: PDB, SCOP, CATH
Cell wall surface anchor family protein ; ligands: HEM ; X-RAY DIFFRACTION 2.9Å
e6tb2E3[E:534-655] Image Pymol Jmol Links: PDB, SCOP, CATH
Cell wall surface anchor family protein ; ligands: HEM ; X-RAY DIFFRACTION 2.9Å
e6tb2D3[D:323-469] Image Pymol Jmol Links: PDB, SCOP, CATH
Cell wall surface anchor family protein ; X-RAY DIFFRACTION 2.9Å
e6tb2E2[E:323-469] Image Pymol Jmol Links: PDB, SCOP, CATH
Cell wall surface anchor family protein ; X-RAY DIFFRACTION 2.9Å
e6p9hB1[B:340-453] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated heme-iron binding protein ; X-RAY DIFFRACTION 3.00Å
e6p9hA1[A:340-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated heme-iron binding protein ; X-RAY DIFFRACTION 3.00Å
e7pcfE3[E:332-463] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM ; ELECTRON MICROSCOPY
e7pcfF1[F:332-464] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM ; ELECTRON MICROSCOPY
e7pchE2[E:332-463] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM ; ELECTRON MICROSCOPY
e7pchF2[F:332-463] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM ; ELECTRON MICROSCOPY
e7pcqE2[E:332-460] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ligands: HEM ; ELECTRON MICROSCOPY
e7pcfE1[E:124-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ELECTRON MICROSCOPY
e7pcfF2[F:124-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ELECTRON MICROSCOPY
e7pchE3[E:124-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ELECTRON MICROSCOPY
e7pchF1[F:124-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ELECTRON MICROSCOPY
e7pcqE1[E:124-268] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein B ; ELECTRON MICROSCOPY
e7w81A1[A:523-656] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: HEM ; X-RAY DIFFRACTION 1.8Å
e7w81B1[B:523-655] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; ligands: HEM ; X-RAY DIFFRACTION 1.8Å
e2iteA1[A:64-184] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein A ; X-RAY DIFFRACTION 1.500Å
e4ij2F1[F:326-464] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Iron-regulated surface determinant protein H ; X-RAY DIFFRACTION 4.240Å
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
some similarity with Ig fold
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