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(-) Description

Title :  MINIMUM ENERGY REPRESENTATIVE STRUCTURE OF A CALCIUM BOUND EF-HAND PROTEIN FROM ENTAMOEBA HISTOLYTICA
 
Authors :  H. S. Atreya, S. C. Sahu, A. Bhattacharya, K. V. R. Chary, G. Govil
Date :  21 Jun 01  (Deposition) - 19 Dec 01  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A
Keywords :  Ef-Hand, Helix-Loop-Helix, Calcium Binding Protein, Entamoeba Histolytica, Metal Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  H. S. Atreya, S. C. Sahu, A. Bhattacharya, K. V. Chary, G. Govil
Nmr Derived Solution Structure Of An Ef-Hand Calcium-Binding Protein From Entamoeba Histolytica.
Biochemistry V. 40 14392 2001
PubMed-ID: 11724551  |  Reference-DOI: 10.1021/BI0114978
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CALCIUM-BINDING PROTEIN
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Plasmid: PET-3C
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Organism Scientific: ENTAMOEBA HISTOLYTICA
    Organism Taxid: 5759
    Synonym: EHCABP

 Structural Features

(-) Chains, Units

  
NMR Structure : 

Summary Information (see also Sequences/Alignments below)

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

NMR Structure (1, 4)
No.NameCountTypeFull Name
1CA4Ligand/IonCALCIUM ION

(-) Sites  (4, 4)

NMR Structure (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:10 , ASN A:12 , ASP A:14 , ALA A:16 , GLU A:21BINDING SITE FOR RESIDUE CA A 147
2AC2SOFTWAREASP A:46 , ASP A:48 , ASN A:50 , GLU A:52 , ILE A:53 , GLU A:57BINDING SITE FOR RESIDUE CA A 159
3AC3SOFTWAREASP A:87 , ASP A:89 , LYS A:91 , GLU A:96BINDING SITE FOR RESIDUE CA A 171
4AC4SOFTWAREASP A:117 , ASN A:119 , ASP A:121 , TYR A:123 , ILE A:124 , GLU A:128BINDING SITE FOR RESIDUE CA A 183

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1JFK)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1JFK)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1JFK)

(-) PROSITE Motifs  (2, 8)

NMR Structure (2, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.CALBP_ENTHI1-32
33-68
72-107
108-134		  4A:1-32
A:33-68
A:72-107
A:108-134
2EF_HAND_1PS00018 EF-hand calcium-binding domain.CALBP_ENTHI10-22
46-58
85-97
117-129		  4A:10-22
A:46-58
A:85-97
A:117-129

(-) Exons   (0, 0)

(no "Exon" information available for 1JFK)

(-) Sequences/Alignments

NMR Structure
   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:134
 aligned with CALBP_ENTHI | P38505 from UniProtKB/Swiss-Prot  Length:134

    Alignment length:134
                                    10        20        30        40        50        60        70        80        90       100       110       120       130    
          CALBP_ENTHI     1 MAEALFKEIDVNGDGAVSYEEVKAFVSKKRAIKNEQLLQLIFKSIDADGNGEIDQNEFAKFYGSIQGQDLSDDKIGLKVLYKLMDVDGDGKLTKEEVTSFFKKHGIEKVAEQVMKADANGDGYITLEEFLEFSL 134
               SCOP domains d1jfka_ A: EHCABP                                                                                                                      SCOP domains
               CATH domains 1jfkA01 A:1-63 EF-hand                                         1jfkA02 A:64-113 EF-hand                          --------------------- CATH domains
               Pfam domains efhand-1jfkA01 A:1-29        --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhh.....eeehhhhhhhhhh....hhhhhhhhhhhhhh.....eeehhhhhhhhhh.....hhhhhhhhhhhhhhhh.....eeehhhhhhhhh....hhhhhhhhhhh.....eeehhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) EF_HAND_2  PDB: A:1-32          EF_HAND_2  PDB: A:33-68             ---EF_HAND_2  PDB: A:72-107            EF_HAND_2  PDB: A:108-134   PROSITE (1)
                PROSITE (2) ---------EF_HAND_1    -----------------------EF_HAND_1    --------------------------EF_HAND_1    -------------------EF_HAND_1    ----- PROSITE (2)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1jfk A   1 MAEALFKEIDVNGDGAVSYEEVKAFVSKKRAIKNEQLLQLIFKSIDADGNGEIDQNEFAKFYGSIQGQDLSDDKIGLKVLYKLMDVDGDGKLTKEEVTSFFKKHGIEKVAEQVMKADANGDGYITLEEFLEFSL 134
                                    10        20        30        40        50        60        70        80        90       100       110       120       130
   Legend:   → Mismatch (orange background)
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  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  (1, 1)

NMR Structure
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (1, 2)

NMR Structure
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: EF_hand (270)

(-) Gene Ontology  (2, 2)

NMR Structure(hide GO term definitions)
Chain A   (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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 Related Entries

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

UniProtKB/Swiss-Prot
        CALBP_ENTHI | P38505: 1jfj 2i18 2m7k 2m7m 2m7n 2nxq 3li6 3px1 3qjk 3ulg

(-) Related Entries Specified in the PDB File

4271 4271 CONTAINS ASSIGNED CHEMICAL SHIFT LISTS
1jfj 1JFJ CONTAINS SAME HOLO PROTEIN (THE CALCIUM IONS ARE NOT SHOWN EXPLICILTY IN THE STRUCTURES).