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(-) Description

Title :  STRUCTURE OF CALCIUM BINDING PROTEIN-1 FROM ENTAMOEBA HISTOLYTICA IN COMPLEX WITH STRONTIUM
 
Authors :  S. Kumar, S. Kumar, E. Ahmad, R. H. Khan, S. Gourinath
Date :  09 Dec 10  (Deposition) - 25 Jan 12  (Release) - 25 Jan 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.00
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (3x)
Biol. Unit 2:  B  (3x)
Keywords :  Ef Hand Motif, Calcium Binding And Signalling, Kinase, Cytosol And Phagocytic Cup, Metal Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Kumar, S. Kumar, E. Ahmad, R. H. Khan, S. Gourinath
Flexibility And Plasticity Of Ef-Hand Motifs: Structure Of Calcium Binding Protein-1 From Entamoeba Histolytica In Complex With Pb2+, Ba2+, And Sr2+.
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - CALCIUM-BINDING PROTEIN
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET3C
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: ENTAMOEBA HISTOLYTICA
    Organism Taxid: 294381
    Synonym: CABP

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (3x): A 
Biological Unit 2 (3x):  B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 4)

Asymmetric Unit (1, 4)
No.NameCountTypeFull Name
1SR4Ligand/IonSTRONTIUM ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1SR-1Ligand/IonSTRONTIUM ION
Biological Unit 2 (0, 0)
No.NameCountTypeFull Name
1SR-1Ligand/IonSTRONTIUM ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:10 , ASN A:12 , ASP A:14 , ALA A:16 , GLU A:21BINDING SITE FOR RESIDUE SR A 149
2AC2SOFTWAREASP A:46 , ASP A:48 , ASN A:50 , GLU A:52 , GLU A:57BINDING SITE FOR RESIDUE SR A 150
3AC3SOFTWAREASP B:10 , ASN B:12 , ASP B:14 , ALA B:16 , GLU B:21BINDING SITE FOR RESIDUE SR B 149
4AC4SOFTWAREASP B:46 , ASP B:48 , ASN B:50 , GLU B:52 , GLU B:57BINDING SITE FOR RESIDUE SR B 150

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3PX1)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3PX1)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3PX1)

(-) PROSITE Motifs  (2, 6)

Asymmetric Unit (2, 6)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.CALBP_ENTHI1-32
33-68
 
72-107
108-134		  2-
A:33-64
B:33-65
-
-
2EF_HAND_1PS00018 EF-hand calcium-binding domain.CALBP_ENTHI10-22
 
46-58
 
85-97
117-129		  4A:10-22
B:10-22
A:46-58
B:46-58
-
-
Biological Unit 1 (2, 9)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.CALBP_ENTHI1-32
33-68
 
72-107
108-134		  3-
A:33-64
-
-
-
2EF_HAND_1PS00018 EF-hand calcium-binding domain.CALBP_ENTHI10-22
 
46-58
 
85-97
117-129		  6A:10-22
-
A:46-58
-
-
-
Biological Unit 2 (2, 9)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.CALBP_ENTHI1-32
33-68
 
72-107
108-134		  3-
-
B:33-65
-
-
2EF_HAND_1PS00018 EF-hand calcium-binding domain.CALBP_ENTHI10-22
 
46-58
 
85-97
117-129		  6-
B:10-22
-
B:46-58
-
-

(-) Exons   (0, 0)

(no "Exon" information available for 3PX1)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:63
 aligned with CALBP_ENTHI | P38505 from UniProtKB/Swiss-Prot  Length:134

    Alignment length:63
                                    11        21        31        41        51        61   
           CALBP_ENTHI    2 AEALFKEIDVNGDGAVSYEEVKAFVSKKRAIKNEQLLQLIFKSIDADGNGEIDQNEFAKFYGS 64
               SCOP domains --------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) EF_HAND_2  PDB: - UniProt: 1-32EF_HAND_2  PDB: A:33-64          PROSITE (1)
                PROSITE (2) --------EF_HAND_1    -----------------------EF_HAND_1    ------ PROSITE (2)
                 Transcript --------------------------------------------------------------- Transcript
                  3px1 A  2 AEALFKEIDVNGDGAVSYEEVKAFVSKKRAIKNEQLLQLIFKSIDADGNGEIDQNEFAKFYGS 64
                                    11        21        31        41        51        61   


Chain B from PDB  Type:PROTEIN  Length:64
 aligned with CALBP_ENTHI | P38505 from UniProtKB/Swiss-Prot  Length:134

    Alignment length:64
                                    11        21        31        41        51        61    
           CALBP_ENTHI    2 AEALFKEIDVNGDGAVSYEEVKAFVSKKRAIKNEQLLQLIFKSIDADGNGEIDQNEFAKFYGSI 65
               SCOP domains ---------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) EF_HAND_2  PDB: - UniProt: 1-32EF_HAND_2  PDB: B:33-65           PROSITE (1)
                PROSITE (2) --------EF_HAND_1    -----------------------EF_HAND_1    ------- PROSITE (2)
                 Transcript ---------------------------------------------------------------- Transcript
                  3px1 B  2 AEALFKEIDVNGDGAVSYEEVKAFVSKKRAIKNEQLLQLIFKSIDADGNGEIDQNEFAKFYGSI 65
                                    11        21        31        41        51        61
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 3PX1)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3PX1)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3PX1)

(-) Gene Ontology  (2, 2)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (CALBP_ENTHI | P38505)
molecular function
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.

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  3px1
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CALBP_ENTHI | P38505: 1jfj 1jfk 2i18 2m7k 2m7m 2m7n 2nxq 3li6 3qjk 3ulg

(-) Related Entries Specified in the PDB File

2nxq CRYSTAL STRUCTURE OF CALCIUM BINDING PROTEIN 1 FROM ENTAMOEBA HISTOLYTICA: A NOVEL ARRANGEMENT OF EF HAND MOTIFS
3li6 CRYSTAL STRUCTURE AND TRIMER-MONOMER TRANSITION OF N- TERMINAL DOMAIN OF EHCABP1 FROM ENTAMOEBA HISTOLYTICA