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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

X: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: ClpS-like

contains a HTH motif

X: 40S ribosomal protein rpS21 (S21e)
H: 40S ribosomal protein rpS21 (S21e)
T: 40S ribosomal protein rpS21 (S21e)
F: Ribosomal_S21e

PF01249

Representatives:

e4v6iAT1[AT:1-87] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein rpS21 (S21e) ; ELECTRON MICROSCOPY

e8ovaAR1[AR:3-91] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21, putative ; ELECTRON MICROSCOPY

e8oveAR1[AR:3-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21, putative ; ELECTRON MICROSCOPY

e8p60SV01[SV0:2-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8p60RV01[RV0:2-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8cdlx1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8cdrx1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8cehx1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8cf5x1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8cg8x1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8cgnx1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8civx1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8ckux1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8cmjx1[x:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e8evpBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8evqBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8evrBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8evsBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8evtBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ewbBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8ewcBV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8pplAV1[AV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e5datD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.15Å

e5datd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.15Å

e5juoSB1[SB:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 (yeast S21) ; ELECTRON MICROSCOPY

e5jupSB1[SB:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 (yeast S21) ; ELECTRON MICROSCOPY

e5jusSB1[SB:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 (yeast S21) ; ELECTRON MICROSCOPY

e5jutSB1[SB:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 (yeast S21) ; ELECTRON MICROSCOPY

e5juuSB1[SB:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 (yeast S21) ; ELECTRON MICROSCOPY

e4btsAZ1[AZ:1-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN RPS21E ; X-RAY DIFFRACTION 3.70Å

e4btsBZ1[BZ:1-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN RPS21E ; X-RAY DIFFRACTION 3.70Å

e4btsCZ1[CZ:1-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN RPS21E ; X-RAY DIFFRACTION 3.70Å

e4btsDZ1[DZ:1-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN RPS21E ; X-RAY DIFFRACTION 3.70Å

e3j6x211[21:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e3j6y211[21:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e3j77211[21:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e3j78211[21:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e3j7aZ1[Z:11-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein eS21 ; ELECTRON MICROSCOPY

e3j80V1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e3j81V1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e4u3mD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u3md11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u3nD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u3nd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u3uD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 2.900Å

e4u3ud11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 2.900Å

e4u4nD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e4u4nd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e4u4oD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.600Å

e4u4od11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.600Å

e4u4qD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u4qd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u4rD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 2.800Å

e4u4rd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 2.800Å

e4u4uD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u4ud11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u4yD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u4yd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u4zD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e4u4zd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e4u50D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u50d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u51D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u51d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u52D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u52d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e4u53D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e4u53d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e4u55D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u55d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.200Å

e4u56D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.450Å

e4u56d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.450Å

e4u6fD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 2.900Å

e4u6fd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 2.900Å

e4uerZ1[Z:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ES21 ; ELECTRON MICROSCOPY

e4v5oAZ1[AZ:1-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RPS21E ; X-RAY DIFFRACTION 3.93Å

e4v5oBZ1[BZ:1-97] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RPS21E ; X-RAY DIFFRACTION 3.93Å

e4v7eBV1[BV:1-76] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21E ; ELECTRON MICROSCOPY

e4v88AV1[AV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.0Å

e4v88CV1[CV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.0Å

e4v8mAR1[AR:6-86] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21, PUTATIVE ; ELECTRON MICROSCOPY

e4v8yAV1[AV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21-A ; ELECTRON MICROSCOPY

e4v8zAV1[AV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21-A ; ELECTRON MICROSCOPY

e4v92BV1[BV:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ES21 ; ELECTRON MICROSCOPY

e4v3pST1[ST:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e3jamV1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e3japV1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e3jaqV1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

e3jbnZ1[Z:11-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein eS21 ; ELECTRON MICROSCOPY

e3jboZ1[Z:11-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein eS21 ; ELECTRON MICROSCOPY

e3jbpZ1[Z:11-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein eS21 ; ELECTRON MICROSCOPY

e5fciD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.400Å

e5fcid11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.400Å

e5fcjD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e5fcjd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e5it7V1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e5it9V1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosomal protein eS21 ; ELECTRON MICROSCOPY

e5dc3D11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.250Å

e5dc3d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.250Å

e5i4lD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e5i4ld11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e5lybD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.250Å

e5lybd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.250Å

e5tgaD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e5tgad11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e5dgfD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e5dgfd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e5dgvD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e5dgvd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.100Å

e5m1jV21[V2:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e5mc6a1[a:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e5dgeD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.450Å

e5dged11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.450Å

e5t2aAR1[AR:4-86] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5tgmD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.500Å

e5tgmd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.500Å

e5ll6a1[a:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e5meiW1[W:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.500Å

e5meid11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.500Å

e5tbwW1[W:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e5tbwd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.000Å

e5xxuV1[V:1-80] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosomal protein eS21 ; ELECTRON MICROSCOPY

e5xyiV1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e3j3aV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4kzxV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; X-RAY DIFFRACTION 7.81Å

e4kzyV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; X-RAY DIFFRACTION 7.01Å

e4kzzV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; X-RAY DIFFRACTION 7.03Å

e1vx2V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e1vx5V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4cxcV1[V:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4uq4V1[V:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4uq5V1[V:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4w23V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4w28V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e3j7pSV1[SV:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosomal protein eS21 ; ELECTRON MICROSCOPY

e3j7rSV1[SV:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosomal protein eS21 ; ELECTRON MICROSCOPY

e4ujcCV1[CV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN ES21 ; ELECTRON MICROSCOPY

e4ujdCV1[CV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN ES21 ; ELECTRON MICROSCOPY

e4ujeBV1[BV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; ELECTRON MICROSCOPY

e4v6wAV1[AV:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e4v6xAV1[AV:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e4d61V1[V:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; ELECTRON MICROSCOPY

e5aj0BV1[BV:1-81] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e4ug0SV1[SV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; ELECTRON MICROSCOPY

e5a2qV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBOSOMAL PROTEIN ES21 ; ELECTRON MICROSCOPY

e3jajSV1[SV:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosomal protein eS21 ; ELECTRON MICROSCOPY

e3janSV1[SV:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosomal protein eS21 ; ELECTRON MICROSCOPY

e3jagVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e3jahVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e3jaiVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5flxV1[V:1-81] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN S21 ; ELECTRON MICROSCOPY

e5k0yb1[b:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e4d5lV1[V:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S RIBOSOMAL PROTEIN ES21 ; ELECTRON MICROSCOPY

e5lzsVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lztVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lzuVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lzvVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lzwVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lzxVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lzyVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5lzzVV1[VV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e5t2cAC1[AC:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e5lksSV1[SV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e5vycV11[V1:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; X-RAY DIFFRACTION 6Å

e5vycV21[V2:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; X-RAY DIFFRACTION 6Å

e5vycV31[V3:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; X-RAY DIFFRACTION 6Å

e5vycV41[V4:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; X-RAY DIFFRACTION 6Å

e5vycV51[V5:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; X-RAY DIFFRACTION 6Å

e5vycV61[V6:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; X-RAY DIFFRACTION 6Å

e5oa3V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e5optg1[g:4-86] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21, putative ; ELECTRON MICROSCOPY

e6emla1[a:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e6az1Y1[Y:3-90] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ribosomal protein S21e ; ELECTRON MICROSCOPY

e5ndgD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.700Å

e6ek0SV1[SV:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH

e5ndgd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.700Å

e5ndvD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e5ndvd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.300Å

e5ndwd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.700Å

e5ndwD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.700Å

e5obmD11[D1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.400Å

e5obmd11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ligands: MG ; X-RAY DIFFRACTION 3.400Å

e6faiV1[V:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e5on6W1[W:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.1Å

e5on6d11[d1:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; X-RAY DIFFRACTION 3.1Å

e6fecb1[b:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6g18V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6g4sV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6g51V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6g53V1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6g5hV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6g5iV1[V:1-82] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21 ; ELECTRON MICROSCOPY

e6d90WW1[WW:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e6d9jWW1[WW:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e6gq1AL1[AL:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e6gqbAL1[AL:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e6gqvAL1[AL:1-87] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

40S ribosomal protein S21-A ; ELECTRON MICROSCOPY

e6hcfW11[W1:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e6hcjW21[W2:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e6hcmW11[W1:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

e6hcqW21[W2:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

eS21 ; ELECTRON MICROSCOPY

Next

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