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Structure of Calcium Binding Protein-1 from Entamoeba histolytica in complex with Lead

X-ray diffraction
3.001Å resolution
PDB entry 3qjk coloured by chain, front view.
PDB entry 3qjk coloured by chain, side view.
PDB entry 3qjk coloured by chain, top view.
Source organism: Entamoeba histolytica HM-1:IMSS
Assembly composition:
homo trimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Calcium-binding protein 1
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Multimeric state: homo trimer
Accessible surface area: 12766.08 Å2
Buried surface area: 5230.11 Å2
Dissociation area: 1,925.16 Å2
Dissociation energy (ΔGdiss): 15.39 kcal/mol
Dissociation entropy (TΔSdiss): 22.25 kcal/mol
Symmetry number: 3
PDBe Complex ID: PDB-CPX-153664
Homo trimeric assembly 1 of PDB entry 3qjk coloured by chemically distinct molecules, front view.
Homo trimeric assembly 1 of PDB entry 3qjk coloured by chemically distinct molecules, side view.
Homo trimeric assembly 1 of PDB entry 3qjk coloured by chemically distinct molecules, top view.
    Assembly 1
Confidence : 48%
No. subunits : 3
Symmetry : C3
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3DComplex & QSbio predictionx
No. subunits : Unclear
Symmetry : Unclear
Evidence : This biological assembly agrees with none of the predictions of PISA & EPPIC
Assembly 2
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Assembly Name: Calcium-binding protein 1
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Multimeric state: homo trimer
Accessible surface area: 12452.56 Å2
Buried surface area: 5279.18 Å2
Dissociation area: 1,991.29 Å2
Dissociation energy (ΔGdiss): 13.72 kcal/mol
Dissociation entropy (TΔSdiss): 22.16 kcal/mol
Symmetry number: 3
PDBe Complex ID: PDB-CPX-153664
Homo trimeric assembly 2 of PDB entry 3qjk coloured by chemically distinct molecules, front view.
Homo trimeric assembly 2 of PDB entry 3qjk coloured by chemically distinct molecules, side view.
Homo trimeric assembly 2 of PDB entry 3qjk coloured by chemically distinct molecules, top view.
    Assembly 2
Confidence : 48%
No. subunits : 3
Symmetry : C3
More details
3DComplex & QSbio predictionx
No. subunits : Unclear
Symmetry : Unclear
Evidence : This biological assembly agrees with none of the predictions of PISA & EPPIC

Macromolecules

Calcium-binding protein 1
Chains: A, B
Length: 134 amino acids
Theoretical weight: 14.97 KDa
Source organism: Entamoeba histolytica HM-1:IMSS
Expression system: Escherichia coli
UniProt:
  • Canonical: P38505 (Residues: 1-134; Coverage: 100%)
Gene names: CaBP1, EHI_120900
Pfam: EF-hand domain pair
InterPro:
CATH: EF-hand
Calcium-binding protein 1 in PDB entry 3qjk, assembly 1, front view.
Calcium-binding protein 1 in PDB entry 3qjk, assembly 1, side view.
Calcium-binding protein 1 in PDB entry 3qjk, assembly 1, top view.
PDBe-KB: UniProt Coverage View: P38505  
1134102030405060708090100110120130
 
50100
UniProt
P38505
Chains
Domains
Secondary structure
Flexibility predictions
Early folding residue predictions
Ligand binding sites
Interaction interfaces
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