Home Help

X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative


Keyword search


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

X: Immunoglobulin-like beta-sandwich
H: Immunoglobulin-related
T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like
F: C1-set

PF07654 CL0159

Representatives:

e1k5nA1[A:182-276] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR HISTOCOMPATIBILITY COMPLEX MOLECULE HLA-B*2709 ; X-RAY DIFFRACTION 1.09Å

e1k5nB1[B:0-99] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BETA-2-MICROGLOBULIN, LIGHT CHAIN ; ligands: GOL ; X-RAY DIFFRACTION 1.09Å

e1mjuH2[H:114-230] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IMMUNOGLOBULIN MS6-12 ; ligands: GOL ; X-RAY DIFFRACTION 1.22Å

e1mjuL2[L:108-214] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IMMUNOGLOBULIN MS6-12 ; ligands: GOL ; X-RAY DIFFRACTION 1.22Å

e1ogaE2[E:119-245] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

T-CELL RECEPTOR BETA CHAIN C REGION ; X-RAY DIFFRACTION 1.4Å

e1l6xA1[A:237-341] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

IMMUNOGLOBULIN GAMMA-1 HEAVY CHAIN CONSTANT REGION ; X-RAY DIFFRACTION 1.65Å

e1l6xA2[A:342-443] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

IMMUNOGLOBULIN GAMMA-1 HEAVY CHAIN CONSTANT REGION ; X-RAY DIFFRACTION 1.65Å

e7a5rH2[H:118-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CR3022 Fab Heavy Chain ; ELECTRON MICROSCOPY

e7a5rI2[I:118-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CR3022 Fab Heavy Chain ; ELECTRON MICROSCOPY

e7a5sH2[H:118-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CR3022 Fab Heavy Chain ; ELECTRON MICROSCOPY

e7a5sI2[I:118-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CR3022 Fab Heavy Chain ; ELECTRON MICROSCOPY

e7jn5H1[H:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CR3022 heavy chain ; ligands: PO4 ; X-RAY DIFFRACTION 2.700Å

e7cheA1[A:126-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-368-2 Fab heavy chain ; X-RAY DIFFRACTION 3.416Å

e7chfA1[A:126-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-368-2 Fab heavy chain ; X-RAY DIFFRACTION 2.67Å

e7chcA2[A:126-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-368-2 Fab H ; X-RAY DIFFRACTION 2.7Å

e7ch4H1[H:118-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-604 Fab H ; X-RAY DIFFRACTION 3.15Å

e7chbH2[H:119-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-236 Fab heavy chain ; X-RAY DIFFRACTION 2.4Å

e7cheH2[H:119-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-236 Fab heavy chain ; X-RAY DIFFRACTION 3.416Å

e7ch5H1[H:118-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-629 Fab H ; X-RAY DIFFRACTION 2.7Å

e7chcH2[H:118-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-629 Fab H ; X-RAY DIFFRACTION 2.7Å

e7chfH2[H:118-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BD-604 Fab heavy chain ; X-RAY DIFFRACTION 2.67Å

e6xliC2[C:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PT3 Fab Heavy Chain ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e6xliH1[H:119-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PT3 Fab Heavy Chain ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e6xliA2[A:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PT3 Fab Heavy Chain ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e6utkD1[D:113-222] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

35O22 Fab Heavy Chain ; X-RAY DIFFRACTION 3.80Å

e6v6wD2[D:113-222] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

35O22 Fab Heavy chain ; X-RAY DIFFRACTION 6.50Å

e6v6wA1[A:113-222] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

35O22 Fab Heavy chain ; X-RAY DIFFRACTION 6.50Å

e6vosH2[H:119-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RM20J Fab heavy chain ; ligands: 2PE,P6G ; X-RAY DIFFRACTION 2.299Å

e6ww5C1[C:128-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab84 Heavy Chain ; ELECTRON MICROSCOPY

e6ww5E2[E:128-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab84 Heavy Chain ; ELECTRON MICROSCOPY

e7k8pH2[H:114-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

C110 Fab Heavy Chain ; X-RAY DIFFRACTION 1.8Å

e6vorA1[A:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RM20E1 Fab heavy chain ; X-RAY DIFFRACTION 1.85Å

e6vorC1[C:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RM20E1 Fab heavy chain ; X-RAY DIFFRACTION 1.85Å

e7k8rH2[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

C135 Fab Heavy Chain ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e6xkrH2[H:118-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Sasanlimab Fab Heavy chain ; ligands: GOL ; X-RAY DIFFRACTION 2.590Å

e7caiE2[E:121-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy chain of H014 Fab ; ELECTRON MICROSCOPY

e7caiG1[G:121-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy chain of H014 Fab ; ELECTRON MICROSCOPY

e6t3jC1[C:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IgG1-hDR5-05-Heavy Chain ; X-RAY DIFFRACTION 3.050Å

e6t3jH2[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IgG1-hDR5-05-Heavy Chain ; X-RAY DIFFRACTION 3.050Å

e6ywdA1[A:129-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody Mota, Heavy Chain ; X-RAY DIFFRACTION 2.8Å

e7jvcH2[H:120-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S2A4 Fab heavy chain ; ELECTRON MICROSCOPY

e7jvcC2[C:120-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S2A4 Fab heavy chain ; ELECTRON MICROSCOPY

e7jvcF2[F:120-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S2A4 Fab heavy chain ; ELECTRON MICROSCOPY

e7jxdA2[A:120-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S2A4 antigen-binding (Fab) fragment ; X-RAY DIFFRACTION 2.500Å

e7jxdC2[C:120-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S2A4 antigen-binding (Fab) fragment ; X-RAY DIFFRACTION 2.500Å

e6wioA2[A:128-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab Heavy chain ; X-RAY DIFFRACTION 2.17Å

e6x4tB1[B:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Prezalumab Fab Heavy chain ; X-RAY DIFFRACTION 3.15Å

e6x4tD1[D:118-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Prezalumab Fab Heavy chain ; X-RAY DIFFRACTION 3.15Å

e6urmH1[H:111-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of antibody LPAF-a.01 ; X-RAY DIFFRACTION 2.65Å

e6urmD2[D:111-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of antibody LPAF-a.01 ; X-RAY DIFFRACTION 2.65Å

e6utkH2[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

B11 Fab Heavy chain ; X-RAY DIFFRACTION 3.80Å

e6uumH2[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

B11 DSS Fab Heavy Chain ; ligands: PG4,SO4 ; X-RAY DIFFRACTION 2.10Å

e6uumB1[B:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

B11 DSS Fab Heavy Chain ; ligands: PG4,SO4 ; X-RAY DIFFRACTION 2.10Å

e6v6wI1[I:114-216] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

B11 DSS Fab heavy chain ; X-RAY DIFFRACTION 6.50Å

e6v6wF2[F:114-216] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

B11 DSS Fab heavy chain ; X-RAY DIFFRACTION 6.50Å

e7k3qH2[H:124-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab fragment of S2E12 monoclonal antibody, heavy chain ; X-RAY DIFFRACTION 1.38Å

e6v4oA1[A:111-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody Fab heavy chain ; ELECTRON MICROSCOPY

e6v4oC1[C:111-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody Fab heavy chain ; ELECTRON MICROSCOPY

e6v4oD2[D:111-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody Fab heavy chain ; ELECTRON MICROSCOPY

e6v4oH2[H:111-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody Fab heavy chain ; ELECTRON MICROSCOPY

e6wgjA1[A:126-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dupilumab Fab heavy chain ; X-RAY DIFFRACTION 1.900Å

e6wgjC1[C:126-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dupilumab Fab heavy chain ; X-RAY DIFFRACTION 1.900Å

e6wgjE2[E:126-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dupilumab Fab heavy chain ; X-RAY DIFFRACTION 1.900Å

e6yt7A1[A:342-444] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Immunoglobulin gamma-1 heavy chain ; X-RAY DIFFRACTION 1.55Å

e6ytbA1[A:342-443] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Immunoglobulin gamma-1 heavy chain ; X-RAY DIFFRACTION 1.65Å

e7jx3C1[C:127-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy chain of Fab domain of monoclonal antibody S2H14 ; X-RAY DIFFRACTION 2.650Å

e7jxcH1[H:127-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

S2H14 antigen-binding (Fab) fragment ; X-RAY DIFFRACTION 2.47Å

e6lirB1[B:115-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TCR beta chain ; X-RAY DIFFRACTION 2.091Å

e6lirD1[D:115-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TCR beta chain ; X-RAY DIFFRACTION 2.091Å

e7lf9A2[A:341-443] Image Pymol Jmol Links: PDB, SCOP, CATH

IgG1 Fc (Fc329) ; X-RAY DIFFRACTION 2.20Å

e7lf9B1[B:341-443] Image Pymol Jmol Links: PDB, SCOP, CATH

IgG1 Fc (Fc329) ; X-RAY DIFFRACTION 2.20Å

e7lfnA2[A:341-443] Image Pymol Jmol Links: PDB, SCOP, CATH

IgG1 Fc (Fc267_329) ; X-RAY DIFFRACTION 2.60Å

e6xjaH1[H:120-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Immunoglobulin alpha-1 heavy chain ; ELECTRON MICROSCOPY

e6xobM2[M:121-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EEEV-143 Fab heavy chain ; ELECTRON MICROSCOPY

e6xobO2[O:121-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EEEV-143 Fab heavy chain ; ELECTRON MICROSCOPY

e6xobQ2[Q:121-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EEEV-143 Fab heavy chain ; ELECTRON MICROSCOPY

e6xobS1[S:121-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EEEV-143 Fab heavy chain ; ELECTRON MICROSCOPY

e7lfnB2[B:342-443] Image Pymol Jmol Links: PDB, SCOP, CATH

IgG1 Fc (Fc267_329) ; X-RAY DIFFRACTION 2.60Å

e7dk4a2[a:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk4c1[c:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk4e2[e:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk5a2[a:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk6a2[a:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk6c1[c:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk7a1[a:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain fragment of 2H2 Fab ; ELECTRON MICROSCOPY

e7dk7c1[c:118-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain fragment of 2H2 Fab ; ELECTRON MICROSCOPY

e6z7wB2[B:118-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUI-018 Fab Heavy Chain ; X-RAY DIFFRACTION 2.42Å

e6z7wD2[D:118-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUI-018 Fab Heavy Chain ; X-RAY DIFFRACTION 2.42Å

e6z7wF2[F:118-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUI-018 Fab Heavy Chain ; X-RAY DIFFRACTION 2.42Å

e6z7wH1[H:118-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUI-018 Fab Heavy Chain ; X-RAY DIFFRACTION 2.42Å

e7dnlH2[H:120-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 2H3 Fab fragment ; ELECTRON MICROSCOPY

e6ldyA2[A:115-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab heavy chain ; X-RAY DIFFRACTION 1.77Å

e6ldyH2[H:115-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab heavy chain ; ligands: CL ; X-RAY DIFFRACTION 1.77Å

e6x1sH2[H:115-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC1-1 Heavy chain ; X-RAY DIFFRACTION 1.65Å

e6x1sA1[A:114-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC1-1 Heavy chain ; X-RAY DIFFRACTION 1.65Å

e6x1sC2[C:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC1-1 Heavy chain ; X-RAY DIFFRACTION 1.65Å

e6x1sE2[E:115-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC1-1 Heavy chain ; X-RAY DIFFRACTION 1.65Å

e6x1tH1[H:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC50-3 Heavy chain ; ligands: SO4 ; X-RAY DIFFRACTION 2.34Å

e6x1tA2[A:115-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC50-3 Heavy chain ; ligands: SO4 ; X-RAY DIFFRACTION 2.34Å

e6x1tC1[C:115-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC50-3 Heavy chain ; X-RAY DIFFRACTION 2.34Å

e6x1tE1[E:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC50-3 Heavy chain ; X-RAY DIFFRACTION 2.34Å

e6x1tG1[G:115-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC50-3 Heavy chain ; ligands: SO4 ; X-RAY DIFFRACTION 2.34Å

e6x1uH2[H:114-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC39-4 Heavy chain ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.64Å

e6x1uA1[A:115-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC39-4 Heavy chain ; X-RAY DIFFRACTION 1.64Å

e6xudH1[H:110-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy chain ; X-RAY DIFFRACTION 1.510Å

e6vrqA1[A:108-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

gl12A21 Fab Heavy Chain ; ligands: CL ; X-RAY DIFFRACTION 2.57Å

e7cm4H1[H:129-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IgG heavy chain ; X-RAY DIFFRACTION 2.71Å

e6x87K1[K:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x87M2[M:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x87I2[I:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x87G1[G:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x87E1[E:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x87C1[C:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x87A2[A:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ELECTRON MICROSCOPY

e6x8pH1[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ligands: EDO ; X-RAY DIFFRACTION 2.27Å

e6x8qH1[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ligands: EDO ; X-RAY DIFFRACTION 1.6Å

e6x8sH1[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ligands: EDO ; X-RAY DIFFRACTION 1.55Å

e6x8uH1[H:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3D11 Fab heavy chain ; ligands: GOL ; X-RAY DIFFRACTION 1.55Å

e6v4qH1[H:125-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Naive-1 Fab heavy chain ; ligands: GOL ; X-RAY DIFFRACTION 1.390Å

e7dpmA1[A:128-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

heavy chain of MW06 ; X-RAY DIFFRACTION 3.300Å

e6wn1B2[B:128-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

241242 Fab heavy chain ; X-RAY DIFFRACTION 3.140Å

e7kqgB2[B:125-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

1272 Fab heavy chain ; X-RAY DIFFRACTION 2.600Å

e7kqiA1[A:124-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

1209 Fab heavy chain ; X-RAY DIFFRACTION 4.200Å

e6w4wH1[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5c8 Fab heavy chain ; X-RAY DIFFRACTION 1.770Å

e6w9gK1[K:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

5c8* Fab (heavy chain) ; ligands: TMO ; X-RAY DIFFRACTION 1.820Å

e6t9eAAA1[AAA:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DutaFab mat VH chain ; X-RAY DIFFRACTION 2.989Å

e6t9eHHH1[HHH:117-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DutaFab mat VH chain ; X-RAY DIFFRACTION 2.989Å

e7kqhH2[H:124-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2365 Fab heavy chain ; X-RAY DIFFRACTION 3.500Å

e7kqhC2[C:124-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2365 Fab heavy chain ; X-RAY DIFFRACTION 3.500Å

e6wtuK1[K:129-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

273264 Fab heavy chain ; X-RAY DIFFRACTION 2.540Å

e6wtuB2[B:129-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

273264 Fab heavy chain ; X-RAY DIFFRACTION 2.540Å

e6wtuE2[E:129-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

273264 Fab heavy chain ; X-RAY DIFFRACTION 2.540Å

e6wtuH2[H:129-229] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

273264 Fab heavy chain ; X-RAY DIFFRACTION 2.540Å

e7l6mh2[h:121-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DH898.1 Fab heavy chain ; ELECTRON MICROSCOPY

e7l6mi2[i:121-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DH898.1 Fab heavy chain ; ELECTRON MICROSCOPY

e6wzjA2[A:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab Heavy Chain ; X-RAY DIFFRACTION 2.37Å

e6wzjC2[C:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab Heavy Chain ; X-RAY DIFFRACTION 2.37Å

e6wzkA2[A:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab heavy chain ; ligands: EDO ; X-RAY DIFFRACTION 1.80Å

e6wzkC2[C:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab heavy chain ; ligands: ACT,EDO ; X-RAY DIFFRACTION 1.80Å

e6wzlA1[A:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab heavy chain ; X-RAY DIFFRACTION 2.29Å

e6wzlC1[C:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab heavy chain ; X-RAY DIFFRACTION 2.29Å

e6wzmA2[A:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab heavy chain ; X-RAY DIFFRACTION 2.28Å

e6wzmC1[C:127-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY3041658 Fab heavy chain ; X-RAY DIFFRACTION 2.28Å

e7dccA2[A:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab ; ELECTRON MICROSCOPY

e7dccB1[B:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab ; ELECTRON MICROSCOPY

e7dccD2[D:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab ; ELECTRON MICROSCOPY

e7dcxA1[A:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab that binds with the up RBD ; ELECTRON MICROSCOPY

e7dcxE1[E:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab that binds with the up RBD ; ELECTRON MICROSCOPY

e7dd2E1[E:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab ; ELECTRON MICROSCOPY

e7dd2A2[A:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab ; ELECTRON MICROSCOPY

e7dd8A2[A:120-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab ; ELECTRON MICROSCOPY

e6xr0H1[H:120-221] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

SC57.32 Fab Heavy Chain ; X-RAY DIFFRACTION 3.06Å

e7dcxB2[B:120-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

The heavy chain of 3C1 fab that binds with the up RBD ; ELECTRON MICROSCOPY

e6ye3A1[A:123-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chains: A,D,G ; X-RAY DIFFRACTION 2.89Å

e7dm2H1[H:126-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

heavy chain ; X-RAY DIFFRACTION 2.050Å

e6wozE2[E:132-234] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

251249 Fab heavy chain ; X-RAY DIFFRACTION 2.890Å

e6wozB1[B:132-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

251249 Fab heavy chain ; X-RAY DIFFRACTION 2.890Å

e6wozH1[H:132-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

251249 Fab heavy chain ; X-RAY DIFFRACTION 2.890Å

e6wozK2[K:132-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

251249 Fab heavy chain ; X-RAY DIFFRACTION 2.890Å

e7kmgA2[A:126-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY-CoV555 Fab heavy chain ; ligands: GOL ; X-RAY DIFFRACTION 2.16Å

e7kmgD2[D:126-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LY-CoV555 Fab heavy chain ; ligands: GOL ; X-RAY DIFFRACTION 2.16Å

e6vy4C2[C:119-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Anti-Hendra receptor binding protein antibody HENV-32 Fab heavy chain ; X-RAY DIFFRACTION 2.00Å

e6vy4H2[H:119-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Anti-Hendra receptor binding protein antibody HENV-32 Fab heavy chain ; X-RAY DIFFRACTION 2.00Å

e6x1tJ2[J:115-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SC50-3 Heavy chain ; X-RAY DIFFRACTION 2.34Å

e7dfpC1[C:121-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FabH ; X-RAY DIFFRACTION 3.1Å

e6weqE1[E:120-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2B7 Fab fragment heavy chain ; X-RAY DIFFRACTION 3.2Å

e6weqG2[G:120-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2B7 Fab fragment heavy chain ; X-RAY DIFFRACTION 3.2Å

e6weqI1[I:120-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2B7 Fab fragment heavy chain ; X-RAY DIFFRACTION 3.2Å

e6weqK2[K:120-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2B7 Fab fragment heavy chain ; X-RAY DIFFRACTION 3.2Å

e6werC1[C:120-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2B7 Fab heavy chain ; X-RAY DIFFRACTION 3.96Å

e6werE1[E:120-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2B7 Fab heavy chain ; X-RAY DIFFRACTION 3.96Å

e6vlwH1[H:114-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

VRC01 Fab Heavy Chain ; ligands: CL,EDO,SO4 ; X-RAY DIFFRACTION 3.42Å

e7kpgH1[H:118-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy chain of Fab 25 anti-SIRP-alpha antibody ; ligands: SO4 ; X-RAY DIFFRACTION 2.27Å

e6m0fH2[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody fragment (9D5) heavy chain ; X-RAY DIFFRACTION 3.2990Å

e6m0zH1[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody fragment (Fab) 9D5 heavy chain ; X-RAY DIFFRACTION 2.876Å

e6m2rH2[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody fragment 9D5 heavy chain ; X-RAY DIFFRACTION 2.800Å

e6m38H1[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody fragment 9D5 heavy chain ; X-RAY DIFFRACTION 3.000Å

e6m3zH2[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody fragment 9D5 heavy chain ; X-RAY DIFFRACTION 3.1060Å

e6m47H2[H:119-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Antibody fragment Heavy chain ; X-RAY DIFFRACTION 3.250Å

e6wm9B1[B:126-230] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

237235 Fab heavy chain ; X-RAY DIFFRACTION 2.450Å

e6wm9E2[E:126-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

237235 Fab heavy chain ; X-RAY DIFFRACTION 2.450Å

e6wnoB1[B:126-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

243244 Fab heavy chain ; X-RAY DIFFRACTION 3.350Å

e6wnoE2[E:126-225] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

243244 Fab heavy chain ; X-RAY DIFFRACTION 3.350Å

e6x9xA1[A:119-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HC84.26 Fab Heavy Chain ; X-RAY DIFFRACTION 1.8Å

e7l5bH1[H:130-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

2-15 Heavy chain ; X-RAY DIFFRACTION 3.18Å

e7l0nA2[A:128-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Monoclonal antibody S309 Fab heavy chain ; X-RAY DIFFRACTION 2.780Å

e7l0nC2[C:128-228] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Monoclonal antibody S309 Fab heavy chain ; X-RAY DIFFRACTION 2.780Å

e6vvuE1[E:114-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab E104.v1 heavy chain ; X-RAY DIFFRACTION 3.0Å

e6vvuG1[G:114-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab E104.v1 heavy chain ; X-RAY DIFFRACTION 3.0Å

e6vvuH2[H:114-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab E104.v1 heavy chain ; X-RAY DIFFRACTION 3.0Å

e6vvuJ1[J:114-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Fab E104.v1 heavy chain ; X-RAY DIFFRACTION 3.0Å

e6xy2H2[H:126-227] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heavy chain ; X-RAY DIFFRACTION 2.95Å

e7dc8B2[B:114-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Switch Ab Fab heavy chain ; X-RAY DIFFRACTION 2.750Å

e7dc8E1[E:114-213] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Switch Ab Fab heavy chain ; X-RAY DIFFRACTION 2.750Å

e7k37H1[H:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k37J1[J:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k37L1[L:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k39H1[H:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k39J2[J:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k39L2[L:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k3aH1[H:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k3aJ2[J:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k3aL1[L:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k3bH1[H:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k3bJ1[J:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7k3bL2[L:127-221] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

antibody Fab heavy chain ; ELECTRON MICROSCOPY

e7jgjH1[H:120-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mAB Heavy Chain ; ELECTRON MICROSCOPY

Previous Next

e1rzfL2[L:109-210] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FAB E51 LIGHT CHAIN ; ligands: GOL ; X-RAY DIFFRACTION 1.7Å

e2h26A1[A:184-279] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

T-CELL SURFACE GLYCOPROTEIN CD1B ; ligands: GOL ; X-RAY DIFFRACTION 1.8Å

e1uvqA1[A:85-183] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HLA CLASS II HISTOCOMPATIBILITY ANTIGEN ; ligands: GLY,NAG ; X-RAY DIFFRACTION 1.800Å

e1uvqB1[B:95-191] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HLA CLASS II HISTOCOMPATIBILITY ANTIGEN ; X-RAY DIFFRACTION 1.800Å

e1u58A1[A:145-242] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MHC-I HOMOLOG M144 ; X-RAY DIFFRACTION 1.9Å

e2fbjH2[H:119-220] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

IGA-KAPPA J539 FAB (HEAVY CHAIN) ; X-RAY DIFFRACTION 1.95Å

e3fruA1[A:179-269] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

NEONATAL FC RECEPTOR ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.2Å

e1dn0B2[B:121-225] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

IGM-KAPPA COLD AGGLUTININ (HEAVY CHAIN) ; X-RAY DIFFRACTION 2.28Å

e1fp5A1[A:336-438] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IGE HEAVY CHAIN EPSILON-1 ; X-RAY DIFFRACTION 2.3Å

e1fp5A2[A:439-543] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IGE HEAVY CHAIN EPSILON-1 ; X-RAY DIFFRACTION 2.3Å

e1hdmA1[A:94-196] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (CLASS II HISTOCOMPATIBILITY ANTIGEN, M ALPHA CHAIN) ; X-RAY DIFFRACTION 2.5Å

e1hdmB1[B:88-185] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (CLASS II HISTOCOMPATIBILITY ANTIGEN, M BETA CHAIN) ; X-RAY DIFFRACTION 2.5Å

e3pl6A2[A:83-180] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MHC class II HLA-DQ-alpha chain ; ligands: NAG ; X-RAY DIFFRACTION 2.55Å

e1o0vA1[A:228-330] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Immunoglobulin heavy chain epsilon-1 ; ligands: SO4 ; X-RAY DIFFRACTION 2.6Å

e1hyrC1[C:181-274] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

MHC CLASS I CHAIN-RELATED PROTEIN A ; X-RAY DIFFRACTION 2.7Å

e1hzhH6[H:114-235] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IMMUNOGLOBULIN HEAVY CHAIN ; X-RAY DIFFRACTION 2.70Å

e1hzhH7[H:236-359] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IMMUNOGLOBULIN HEAVY CHAIN ; ligands: BMA,GAL,MAN,NAG ; X-RAY DIFFRACTION 2.70Å

e1hzhH8[H:360-478] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

IMMUNOGLOBULIN HEAVY CHAIN ; X-RAY DIFFRACTION 2.70Å

e3rdtC2[C:83-178] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

H-2 class II histocompatibility antigen, A-B alpha chain ; X-RAY DIFFRACTION 2.70Å

e1hxmA2[A:121-206] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GAMMA-DELTA T-CELL RECEPTOR ; X-RAY DIFFRACTION 3.00Å

e1hxmB2[B:124-230] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GAMMA-DELTA T-CELL RECEPTOR ; X-RAY DIFFRACTION 3.00Å

e1zvoC2[C:130-234] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Immunoglobulin delta heavy chain ; SOLUTION SCATTERING

e1zvoC5[C:398-512] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Immunoglobulin delta heavy chain ; SOLUTION SCATTERING

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.

X: Glycosyl hydrolase domain-like

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