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(-) Description

Title :  STRUCTURE OF THE CALCIUM-REGULATED PHOTOPROTEIN OBELIN DETERMINED BY SULFUR SAS
 
Authors :  Z. J. Liu, E. S. Vysotski, J. Rose, J. Lee, B. C. Wang
Date :  13 Mar 00  (Deposition) - 13 Mar 01  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.73
Chains :  Asym./Biol. Unit :  A
Keywords :  Bioluminescence, Calcium, Photoprotein, Obelin, Sulfur Anomalous Scattering, Luminescent Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  Z. J. Liu, E. S. Vysotski, C. J. Chen, J. P. Rose, J. Lee, B. C. Wang
Structure Of The Ca2+-Regulated Photoprotein Obelin At 1. 7 A Resolution Determined Directly From Its Sulfur Substructure.
Protein Sci. V. 9 2085 2000
PubMed-ID: 11152120
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - OBELIN
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PT7-7
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: OBELIA LONGISSIMA
    Organism Taxid: 32570
    Synonym: OBL

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 2)

Asymmetric/Biological Unit (2, 2)
No.NameCountTypeFull Name
1CL1Ligand/IonCHLORIDE ION
2CTZ1Ligand/IonC2-HYDROXY-COELENTERAZINE

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:112 , THR A:172 , HOH A:301 , HOH A:303BINDING SITE FOR RESIDUE CL A 196
2AC2SOFTWAREHIS A:22 , MET A:25 , ILE A:42 , ILE A:50 , PHE A:88 , TRP A:92 , TRP A:114 , GLY A:115 , PHE A:119 , TRP A:135 , TYR A:138 , MET A:171 , HIS A:175 , TRP A:179 , TYR A:190 , HOH A:239BINDING SITE FOR RESIDUE CTZ A 197

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1EL4)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1EL4)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1EL4)

(-) PROSITE Motifs  (2, 6)

Asymmetric/Biological Unit (2, 6)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.OBL_OBELO17-52
110-145
146-181		  3A:17-52
A:110-145
A:146-181
2EF_HAND_1PS00018 EF-hand calcium-binding domain.OBL_OBELO30-42
123-135
159-171		  3A:30-42
A:123-135
A:159-171

(-) Exons   (0, 0)

(no "Exon" information available for 1EL4)

(-) Sequences/Alignments

Asymmetric/Biological 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:194
 aligned with OBL_OBELO | Q27709 from UniProtKB/Swiss-Prot  Length:195

    Alignment length:194
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191    
            OBL_OBELO     2 SSKYAVKLKTDFDNPRWIKRHKHMFDFLDINGNGKITLDEIVSKASDDICAKLEATPEQTKRHQVCVEAFFRGCGMEYGKEIAFPQFLDGWKQLATSELKKWARNEPTLIREWGDAVFDIFDKDGSGTITLDEWKAYGKISGISPSQEDCEATFRHCDLDNSGDLDVDEMTRQHLGFWYTLDPEADGLYGNGVP 195
               SCOP domains d1el4a_ A: Calcium-regulated photoprotein                                                                                                                                                          SCOP domains
               CATH domains 1el4A00 A:2-195 EF-hand                                                                                                                                                                            CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .............hhhhhhhhhhhhhhhh.....eehhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh........eehhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhh......eehhhhhhhhhhhhh...hhhhhhhhhhhh.......eehhhhhhhhhhhhh..hhhhh........ Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---------------EF_HAND_2  PDB: A:17-52             ---------------------------------------------------------EF_HAND_2  PDB: A:110-145           EF_HAND_2  PDB: A:146-181           -------------- PROSITE (1)
                PROSITE (2) ----------------------------EF_HAND_1    --------------------------------------------------------------------------------EF_HAND_1    -----------------------EF_HAND_1    ------------------------ PROSITE (2)
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1el4 A   2 SSKYAVKLKTDFDNPRWIKRHKHMFDFLDINGNGKITLDEIVSKASDDICAKLEATPEQTKRHQVCVEAFFRGCGMEYGKEIAFPQFLDGWKQLATSELKKWARNEPTLIREWGDAVFDIFDKDGSGTITLDEWKAYGKISGISPSQEDCEATFRHCDLDNSGDLDVDEMTRQHLGFWYTLDPEADGLYGNGVP 195
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191
   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)

Asymmetric/Biological Unit
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1EL4)

(-) Gene Ontology  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (OBL_OBELO | Q27709)
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.
biological process
    GO:0008218    bioluminescence    The production of light by certain enzyme-catalyzed reactions in cells.

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  1el4
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 Related Entries

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

UniProtKB/Swiss-Prot
        OBL_OBELO | Q27709: 1jf0 1jf2 1qv0 1qv1 1s36 1sl7 1sl9 2f8p 4mrx 4mry 4n1f 4n1g

(-) Related Entries Specified in the PDB File

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