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(-) Description

Title :  CRYSTAL STRUCTURE OF EHUB IN COMPLEX WITH ECTOINE
 
Authors :  N. Hanekop, M. Hoeing, L. Sohn-Bosser, M. Jebbar, L. Schmitt, E. Bremer
Date :  09 Jun 07  (Deposition) - 01 Jan 08  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A
Keywords :  Substrate-Binding Protein, Compatible Solues, Abc-Transporter, Osmoprotection, Transport Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  N. Hanekop, M. Hoing, L. Sohn-Bosser, M. Jebbar, L. Schmitt, E. Bremer
Crystal Structure Of The Ligand-Binding Protein Ehub From Sinorhizobium Meliloti Reveals Substrate Recognition Of The Compatible Solutes Ectoine And Hydroxyectoine.
J. Mol. Biol. V. 374 1237 2007
PubMed-ID: 17996893  |  Reference-DOI: 10.1016/J.JMB.2007.09.071

(-) Compounds

Molecule 1 - PUTATIVE ABC TRANSPORTER AMINO ACID-BINDING PROTEIN
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21
    Expression System Strain: BL21
    Expression System Taxid: 511693
    Organism Scientific: SINORHIZOBIUM MELILOTI
    Organism Taxid: 382
    Synonym: EHUB

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 5)

Asymmetric/Biological Unit (2, 5)
No.NameCountTypeFull Name
14CS1Ligand/Ion(4S)-2-METHYL-1,4,5,6-TETRAHYDROPYRIMIDINE-4-CARBOXYLICACID
2CD4Ligand/IonCADMIUM ION

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:146 , GLU A:250 , HOH A:630 , HOH A:648 , HOH A:719BINDING SITE FOR RESIDUE CD A 601
2AC2SOFTWAREASP A:117 , HOH A:608 , HOH A:669 , HOH A:673 , HOH A:726BINDING SITE FOR RESIDUE CD A 602
3AC3SOFTWAREASP A:167 , GLU A:211 , ASP A:215 , HOH A:609 , HOH A:679 , HOH A:725BINDING SITE FOR RESIDUE CD A 603
4AC4SOFTWARESER A:56 , GLU A:59 , HIS A:72 , HOH A:605 , HOH A:653BINDING SITE FOR RESIDUE CD A 604
5AC5SOFTWAREGLU A:21 , PHE A:24 , TYR A:60 , GLY A:78 , LEU A:79 , PHE A:80 , ARG A:85 , GLY A:132 , THR A:133 , GLU A:134 , PRO A:172BINDING SITE FOR RESIDUE 4CS A 501

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1A:86 -A:253
2A:97 -A:201

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Pro A:22 -Pro A:23
2Ala A:192 -Pro A:193

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2Q88)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2Q88)

(-) Exons   (0, 0)

(no "Exon" information available for 2Q88)

(-) 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:257
 aligned with Q92WC8_RHIME | Q92WC8 from UniProtKB/TrEMBL  Length:283

    Alignment length:257
                                    36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       
         Q92WC8_RHIME    27 ADENKLEELKEQGFARIAIANEPPFTAVGADGKVSGAAPDVAREIFKRLGVADVVASISEYGAMIPGLQAGRHDAITAGLFMKPERCAAVAYSQPILCDAEAFALKKGNPLGLKSYKDIADNPDAKIGAPGGGTEEKLALEAGVPRDRVIVVPDGQSGLKMLQDGRIDVYSLPVLSINDLVSKANDPNVEVLAPVEGAPVYCDGAAFRKGDEALRDAFDVELAKLKESGEFAKIIEPYGFSAKAAMSTTREKLCAAK 283
               SCOP domains d2q88a_ A: automated matches                                                                                                                                                                                                                                      SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------SBP_bac_3-2q88A01 A:14-240                                                                                                                                                                                                         ---------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhheeeeee.......ee.....eehhhhhhhhhhhhhh...eeeeee.hhhhhhhhhhh....ee......hhhhhh..ee.....ee.eeeeee........hhhhhhhh....eee...hhhhhhhhhh..hhh.eee..hhhhhhhhhhh....eeeeehhhhhhhhhhhh...eeee........ee...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhh.hhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2q88 A   0 RDENKLEELKEQGFARIAIANEPPFTAVGADGKVSGAAPDVAREIFKRLGVADVVASISEYGAMIPGLQAGRHDAITAGLFMKPERCAAVAYSQPILCDAEAFALKKGNPLGLKSYKDIADNPDAKIGAPGGGTEEKLALEAGVPRDRVIVVPDGQSGLKMLQDGRIDVYSLPVLSINDLVSKANDPNVEVLAPVEGAPVYCDGAAFRKGDEALRDAFDVELAKLKESGEFAKIIEPYGFSAKAAMSTTREKLCAAK 256
                                     9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249
   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  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2Q88)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: PBP (391)

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (Q92WC8_RHIME | Q92WC8)
molecular function
    GO:0033294    ectoine binding    Interacting selectively and non-covalently with ectoine, 1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid.
    GO:0051471    ectoine transmembrane transporter activity    Enables the transfer of ectoine from one side of the membrane to the other. Ectoine (1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid) is a tetrahydropyrimidine commonly synthesized by halophilic bacteria.
biological process
    GO:0051470    ectoine transport    The directed movement of ectoine into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Ectoine (1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid) is a tetrahydropyrimidine commonly synthesized by halophilic bacteria.
cellular component
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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  2q88
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  Q92WC8_RHIME | Q92WC8
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 Related Entries

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

UniProtKB/TrEMBL
        Q92WC8_RHIME | Q92WC8: 2q89

(-) Related Entries Specified in the PDB File

2q89