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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: Periplasmic binding protein-like II
H: Periplasmic binding protein-like II
T: Periplasmic binding protein-like II
F: SBP_bac_11

PF13531 CL0177

Representatives:

e1atgA2[A:2-80,A:192-232] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERIPLASMIC MOLYBDATE-BINDING PROTEIN ; ligands: EDO,WO4 ; X-RAY DIFFRACTION 1.2Å

e1atgA3[A:81-191] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PERIPLASMIC MOLYBDATE-BINDING PROTEIN ; ligands: ACT,EDO,SO4,WO4 ; X-RAY DIFFRACTION 1.2Å

e2onsA2[A:113-283] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UPF0100 PROTEIN AF_0094 ; ligands: MG,NO3,WO4 ; X-RAY DIFFRACTION 1.55Å

e2onsA3[A:32-112,A:284-342] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UPF0100 PROTEIN AF_0094 ; ligands: NO3,WO4 ; X-RAY DIFFRACTION 1.55Å

e1amfA2[A:3-82,A:195-233] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MOLYBDATE TRANSPORT PROTEIN MODA ; ligands: MOO ; X-RAY DIFFRACTION 1.75Å

e8k8kA1[A:28-106,A:219-257] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; X-RAY DIFFRACTION 1.99Å

e8k8lA2[A:27-106,A:219-257] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: MOO ; X-RAY DIFFRACTION 1.77Å

e3axfA2[A:3-82,A:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MOLYBDATE-BINDING PERIPLASMIC PROTEIN ; ligands: REO ; X-RAY DIFFRACTION 2.0Å

e3axfB2[B:3-82,B:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MOLYBDATE-BINDING PERIPLASMIC PROTEIN ; ligands: REO ; X-RAY DIFFRACTION 2.0Å

e3axfC1[C:3-82,C:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MOLYBDATE-BINDING PERIPLASMIC PROTEIN ; ligands: REO ; X-RAY DIFFRACTION 2.0Å

e3firA1[A:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 2.0Å

e3firA2[A:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 2.0Å

e3gzgA2[A:2-82,A:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate-binding periplasmic protein; permease ; ligands: MOO ; X-RAY DIFFRACTION 1.55Å

e3gzgB1[B:2-82,B:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate-binding periplasmic protein; permease ; ligands: MOO ; X-RAY DIFFRACTION 1.55Å

e3gzgC2[C:2-82,C:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate-binding periplasmic protein; permease ; ligands: MOO ; X-RAY DIFFRACTION 1.55Å

e2h5yA1[A:2-82,A:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Molybdate-binding periplasmic protein ; ligands: MOO ; X-RAY DIFFRACTION 1.70Å

e2h5yB1[B:1-82,B:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Molybdate-binding periplasmic protein ; ligands: MOO,SO4 ; X-RAY DIFFRACTION 1.70Å

e2h5yC1[C:2-82,C:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Molybdate-binding periplasmic protein ; ligands: MOO ; X-RAY DIFFRACTION 1.70Å

e4kd5C1[C:42-123,C:230-270] Image Pymol Jmol Links: PDB, SCOP, CATH

ABC-type transport system, molybdenum-specific extracellular solute-binding protein ; ligands: FMT,SBT ; X-RAY DIFFRACTION 2.4999Å

e4kd5A1[A:42-123,A:230-270] Image Pymol Jmol Links: PDB, SCOP, CATH

ABC-type transport system, molybdenum-specific extracellular solute-binding protein ; X-RAY DIFFRACTION 2.4999Å

e4kd5B1[B:42-123,B:230-269] Image Pymol Jmol Links: PDB, SCOP, CATH

ABC-type transport system, molybdenum-specific extracellular solute-binding protein ; ligands: FMT,SBT ; X-RAY DIFFRACTION 2.4999Å

e4kd5D1[D:43-123,D:230-269] Image Pymol Jmol Links: PDB, SCOP, CATH

ABC-type transport system, molybdenum-specific extracellular solute-binding protein ; ligands: SO4 ; X-RAY DIFFRACTION 2.4999Å

e3r26A2[A:3-82,A:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Molybdate-binding periplasmic protein ; ligands: REO ; X-RAY DIFFRACTION 1.7Å

e1wodA1[A:3-82,A:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MODA ; ligands: WO4 ; X-RAY DIFFRACTION 1.75Å

e4rxlA2[A:25-103,A:216-253] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdenum ABC transporter, periplasmic molybdenum-binding protein ; ligands: WO4 ; X-RAY DIFFRACTION 1.520Å

e3firB1[B:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 2.0Å

e3firB2[B:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 2.0Å

e3fj7A1[A:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PEQ ; X-RAY DIFFRACTION 1.7Å

e3fj7A2[A:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PEQ ; X-RAY DIFFRACTION 1.7Å

e3fj7B1[B:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PEQ ; X-RAY DIFFRACTION 1.7Å

e3fj7B2[B:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PEQ ; X-RAY DIFFRACTION 1.7Å

e3fjgA1[A:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgA2[A:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgB1[B:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgB2[B:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgC1[C:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgC2[C:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgD1[D:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjgD2[D:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: 3PG ; X-RAY DIFFRACTION 2.2Å

e3fjmA1[A:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PO4 ; X-RAY DIFFRACTION 1.6Å

e3fjmA2[A:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PO4 ; X-RAY DIFFRACTION 1.6Å

e3fjmB1[B:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PO4 ; X-RAY DIFFRACTION 1.6Å

e3fjmB2[B:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ANTIGENIC PEPTIDE PEB3 ; ligands: PO4 ; X-RAY DIFFRACTION 1.6Å

e2hxwA1[A:21-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 1.6Å

e2hxwA2[A:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 1.6Å

e2hxwB1[B:22-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 1.6Å

e2hxwB2[B:168-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Major antigenic peptide PEB3 ; ligands: FLC ; X-RAY DIFFRACTION 1.6Å

e4jb7A1[A:0-171] Image Pymol Jmol Links: PDB, SCOP, CATH

Accessory colonization factor AcfC ; ligands: MLT,PGE,TRS ; X-RAY DIFFRACTION 1.42Å

e4xxuA1[A:3-82,A:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate-binding periplasmic protein ; ligands: CQ4 ; X-RAY DIFFRACTION 1.430Å

e4xxuB1[B:3-82,B:195-233] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate-binding periplasmic protein ; ligands: CQ4 ; X-RAY DIFFRACTION 1.430Å

e6nioA1[A:33-112,A:225-263] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: FMT ; X-RAY DIFFRACTION 1.37Å

e7tavA2[A:1-81,A:190-230] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: CA,CL,GOL,SO4 ; X-RAY DIFFRACTION 2.75Å

e7tavB2[B:1-81,B:190-229] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: CA,GOL,SO4 ; X-RAY DIFFRACTION 2.75Å

e7tavC1[C:1-81,C:190-230] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: CA,SO4 ; X-RAY DIFFRACTION 2.75Å

e7tavD1[D:1-81,D:190-230] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: CA,SO4 ; X-RAY DIFFRACTION 2.75Å

e7tavE2[E:1-81,E:190-229] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: CA,SO4 ; X-RAY DIFFRACTION 2.75Å

e7tavF2[F:2-81,F:190-230] Image Pymol Jmol Links: PDB, SCOP, CATH

Molybdate ABC transporter substrate-binding protein ; ligands: CA,GOL,SO4 ; X-RAY DIFFRACTION 2.75Å

e4jb7A2[A:172-256] Image Pymol Jmol Links: PDB, SCOP, CATH

Accessory colonization factor AcfC ; ligands: MLT,PGE ; X-RAY DIFFRACTION 1.42Å

e1amfA3[A:83-194] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MOLYBDATE TRANSPORT PROTEIN MODA ; ligands: MOO ; X-RAY DIFFRACTION 1.75Å

e1y4tA3[A:5-104,A:238-321] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

putative iron-uptake ABC transport system periplasmic iron-binding protein ; ligands: FE ; X-RAY DIFFRACTION 1.80Å

e1sbpA3[A:95-219] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

SULFATE-BINDING PROTEIN ; ligands: SO4 ; X-RAY DIFFRACTION

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.

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