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(-) Description

Title :  CRYSTAL STRUCTURE OF THE OUTER MEMBRANE TRANSPORTER FECA COMPLEXED WITH FERRIC CITRATE
 
Authors :  A. D. Ferguson, R. Chakraborty, B. S. Smith, L. Esser, D. Van Der Helm, J. Deisenhofer
Date :  17 Dec 01  (Deposition) - 06 Mar 02  (Release) - 02 Nov 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.50
Chains :  Asym./Biol. Unit :  A
Keywords :  Integral Outer Membrane Protein, Tonb-Dependent Receptor, Siderophore, Iron, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. D. Ferguson, R. Chakraborty, B. S. Smith, L. Esser, D. Van Der Helm J. Deisenhofer
Structural Basis Of Gating By The Outer Membrane Transporte Feca.
Science V. 295 1715 2002
PubMed-ID: 11872840  |  Reference-DOI: 10.1126/SCIENCE.1067313

(-) Compounds

Molecule 1 - IRON(III) DICITRATE TRANSPORT PROTEIN FECA
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PSV66
    Expression System Strain: UT5600
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Gene: FECA
    Organism Scientific: ESCHERICHIA COLI K12
    Organism Taxid: 83333
    Other Details: FERRIC CITRATE UPTAKE RECEPTOR
    Strain: K-12
    Synonym: FECA

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (4, 34)

Asymmetric/Biological Unit (4, 34)
No.NameCountTypeFull Name
1CIT2Ligand/IonCITRIC ACID
2FE2Ligand/IonFE (III) ION
3LDA16Ligand/IonLAURYL DIMETHYLAMINE-N-OXIDE
4MSE14Mod. Amino AcidSELENOMETHIONINE

(-) Sites  (19, 19)

Asymmetric Unit (19, 19)
No.NameEvidenceResiduesDescription
01AC1SOFTWARECIT A:2001 , FE A:2002 , CIT A:2003BINDING SITE FOR RESIDUE FE A 2000
02AC2SOFTWARETHR A:138 , ARG A:365 , LEU A:369 , GLN A:371 , ARG A:380 , ARG A:438 , GLN A:570 , ASP A:573 , ASN A:721 , HOH A:828 , FE A:2000 , FE A:2002 , CIT A:2003BINDING SITE FOR RESIDUE CIT A 2001
03AC3SOFTWAREARG A:380 , GLN A:570 , HOH A:806 , FE A:2000 , CIT A:2001 , CIT A:2003BINDING SITE FOR RESIDUE FE A 2002
04AC4SOFTWAREGLN A:176 , GLN A:178 , SER A:180 , ARG A:365 , ARG A:380 , GLN A:570 , HOH A:806 , HOH A:868 , HOH A:932 , FE A:2000 , CIT A:2001 , FE A:2002BINDING SITE FOR RESIDUE CIT A 2003
05AC5SOFTWAREGLY A:228 , VAL A:229 , HIS A:246 , TYR A:264 , LEU A:701 , PHE A:703 , GLY A:737 , SER A:738BINDING SITE FOR RESIDUE LDA A 743
06AC6SOFTWARETRP A:647 , VAL A:688 , TYR A:690 , PHE A:741BINDING SITE FOR RESIDUE LDA A 744
07AC7SOFTWARETHR A:600 , VAL A:604 , VAL A:640 , PHE A:649 , LEU A:651BINDING SITE FOR RESIDUE LDA A 745
08AC8SOFTWARETRP A:505 , THR A:544 , TYR A:546 , ALA A:553BINDING SITE FOR RESIDUE LDA A 746
09AC9SOFTWAREVAL A:497 , TYR A:499 , LEU A:507 , TYR A:508BINDING SITE FOR RESIDUE LDA A 747
10BC1SOFTWARETYR A:408 , HIS A:447 , TRP A:449BINDING SITE FOR RESIDUE LDA A 748
11BC2SOFTWARETYR A:410 , GLU A:445BINDING SITE FOR RESIDUE LDA A 749
12BC3SOFTWARETYR A:264 , ARG A:279BINDING SITE FOR RESIDUE LDA A 750
13BC4SOFTWARETYR A:436 , THR A:588 , TYR A:612BINDING SITE FOR RESIDUE LDA A 751
14BC5SOFTWARETHR A:511 , ARG A:538 , LDA A:757BINDING SITE FOR RESIDUE LDA A 753
15BC6SOFTWAREHIS A:634 , GLN A:656BINDING SITE FOR RESIDUE LDA A 754
16BC7SOFTWARETRP A:449 , PHE A:468BINDING SITE FOR RESIDUE LDA A 755
17BC8SOFTWAREVAL A:229 , GLY A:231 , GLU A:244 , PHE A:703 , GLY A:704 , VAL A:705 , LEU A:733 , TYR A:734 , MSE A:735 , HOH A:890BINDING SITE FOR RESIDUE LDA A 756
18BC9SOFTWARETRP A:540 , ASN A:561 , LDA A:753BINDING SITE FOR RESIDUE LDA A 757
19CC1SOFTWARELEU A:342 , ILE A:356 , GLN A:357 , GLY A:358BINDING SITE FOR RESIDUE LDA A 758

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Gly A:204 -Pro A:205
2Glu A:533 -Pro A:534

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1TONB_DEPENDENT_REC_2PS01156 TonB-dependent receptor proteins signature 2.FECA_ECOLI757-774  1A:724-741

(-) Exons   (0, 0)

(no "Exon" information available for 1KMP)

(-) 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:647
 aligned with FECA_ECOLI | P13036 from UniProtKB/Swiss-Prot  Length:774

    Alignment length:647
                                   137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347       357       367       377       387       397       407       417       427       437       447       457       467       477       487       497       507       517       527       537       547       557       567       577       587       597       607       617       627       637       647       657       667       677       687       697       707       717       727       737       747       757       767       
           FECA_ECOLI   128 NDVFEHAGARDVIRREDFAKTGATTMREVLNRIPGVSAPENNGTGSHDLAMNFGIRGLNPRLASRSTVLMDGIPVPFAPYGQPQLSLAPVSLGNMDAIDVVRGGGAVRYGPQSVGGVVNFVTRAIPQDFGIEAGVEGQLSPTSSQNNPKETHNLMVGGTADNGFGTALLYSGTRGSDWREHSATRIDDLMLKSKYAPDEVHTFNSLLQYYDGEADMPGGLSRADYDADRWQSTRPYDRFWGRRKLASLGYQFQPDSQHKFNIQGFYTQTLRSGYLEQGKRITLSPRNYWVRGIEPRYSQIFMIGPSAHEVGVGYRYLNESTHEMRYYTATSSGQLPSGSSPYDRDTRSGTEAHAWYLDDKIDIGNWTITPGMRFEHIESYQNNAITGTHEEVSYNAPLPALNVLYHLTDSWNLYANTEGSFGTVQYSQIGKAVQSGNVEPEKARTWELGTRYDDGALTAEMGLFLINFNNQYDSNQTNDTVTARGKTRHTGLETQARYDLGTLTPTLDNVSIYASYAYVNAEIREKGDTYGNLVPFSPKHKGTLGVDYKPGNWTFNLNSDFQSSQFADNANTVKESADGSTGRIPGFMLWGARVAYDFGPQMADLNLAFGVKNIFDQDYFIRSYDDNNKGIYAGQPRTLYMQGSLKF 774
               SCOP domains d1kmpa_ A: Outer membrane transporter FecA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains 1kmpA01 A:95-222 Ferric Hydroxamate Uptake Protein; Chain A, domain 1                                                           1kmpA02 A:223-741  [code=2.40.170.20, no name defined]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  CATH domains
               Pfam domains -Plug-1kmpA02 A:96-211                                                                                               ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TonB_dep_Rec-1kmpA01 A:492-740                                                                                                                                                                                                                           - Pfam domains
         Sec.struct. author .........eeeee.hhhhhhh...hhhhhh....ee....hhhhh.......ee....hhhhh..eeee..ee................hhh.eeeeeee..........hhhh.eeeeee.......eeeeeeeeee.........eeeeeeeee......eeeeeeeeeeee........eeeeeeeeeeee.....eeeeeeeeeeeeeee.....hhhhhhhh.........eeeeeeeeeeeeeee.....eeeeeeeeeeeeeeeeeeee..eeee..eeeeeeeeeeeeeeeeee..eeeeeeeeeeeeeeeeeeeeeeee............eeeeeeeeeeeeeeeeeeeeee..eee..eeeeeeeeeeeee.....eeeeeeeeeeeeeeeeeeee..eeeeeeeeeeee..hhhhh...........eeeeeeeeeeeee...eeeeeeeeeeee..................eeeeeeeeeeeee.hhhhhhhh.eeeeeeeeeeeeee................eeeeeeeee....eeeeeeeeee........................eeeeeeeeeeee......eeeeeeee.......eeee......eeee....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TONB_DEPENDENT_REC PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kmp A  95 NDVFEHAGARDVIRREDFAKTGATTmREVLNRIPGVSAPENNGTGSHDLAmNFGIRGLNPRLASRSTVLmDGIPVPFAPYGQPQLSLAPVSLGNmDAIDVVRGGGAVRYGPQSVGGVVNFVTRAIPQDFGIEAGVEGQLSPTSSQNNPKETHNLmVGGTADNGFGTALLYSGTRGSDWREHSATRIDDLmLKSKYAPDEVHTFNSLLQYYDGEADmPGGLSRADYDADRWQSTRPYDRFWGRRKLASLGYQFQPDSQHKFNIQGFYTQTLRSGYLEQGKRITLSPRNYWVRGIEPRYSQIFmIGPSAHEVGVGYRYLNESTHEmRYYTATSSGQLPSGSSPYDRDTRSGTEAHAWYLDDKIDIGNWTITPGmRFEHIESYQNNAITGTHEEVSYNAPLPALNVLYHLTDSWNLYANTEGSFGTVQYSQIGKAVQSGNVEPEKARTWELGTRYDDGALTAEmGLFLINFNNQYDSNQTNDTVTARGKTRHTGLETQARYDLGTLTPTLDNVSIYASYAYVNAEIREKGDTYGNLVPFSPKHKGTLGVDYKPGNWTFNLNSDFQSSQFADNANTVKESADGSTGRIPGFmLWGARVAYDFGPQmADLNLAFGVKNIFDQDYFIRSYDDNNKGIYAGQPRTLYmQGSLKF 741
                                   104       114     | 124       134       144|      154       164       174       184    |  194       204       214       224       234       244    |  254       264       274       284       294       304     | 314       324       334       344       354       364       374       384       394 |     404       414   |   424       434       444       454       464 |     474       484       494       504       514       524       534       544       554|      564       574       584       594       604       614       624       634       644       654       664       674       684       694 |     704       714       724       734|      
                                                   120-MSE                  145-MSE            164-MSE                  189-MSE                                                     249-MSE                            284-MSE                   310-MSE                                                                               396-MSE               418-MSE                                         466-MSE                                                                                  555-MSE                                                                                                                        682-MSE       696-MSE                                735-MSE
   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: Membrane and cell surface proteins and peptides (2046)

(-) CATH Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Clan: MBB (97)
(-)
Clan: Ubiquitin (279)

(-) Gene Ontology  (12, 12)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (FECA_ECOLI | P13036)
molecular function
    GO:0015091    ferric iron transmembrane transporter activity    Enables the transfer of ferric iron (Fe(III) or Fe3+) ions from one side of a membrane to the other.
    GO:0005506    iron ion binding    Interacting selectively and non-covalently with iron (Fe) ions.
    GO:0004872    receptor activity    Combining with an extracellular or intracellular messenger to initiate a change in cell activity.
biological process
    GO:0015682    ferric iron transport    The directed movement of ferric iron (Fe(III) or Fe3+) ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0006811    ion transport    The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0055072    iron ion homeostasis    Any process involved in the maintenance of an internal steady state of iron ions within an organism or cell.
    GO:0015891    siderophore transport    The directed movement of siderophores, low molecular weight Fe(III)-chelating substances, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
    GO:0009279    cell outer membrane    A lipid bilayer that forms the outermost membrane of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures.
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0019867    outer membrane    The external membrane of Gram-negative bacteria or certain organelles such as mitochondria and chloroplasts; freely permeable to most ions and metabolites.

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  Cis Peptide Bonds
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 Related Entries

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

UniProtKB/Swiss-Prot
        FECA_ECOLI | P13036: 1kmo 1pnz 1po0 1po3 1zzv 2d1u

(-) Related Entries Specified in the PDB File

1kmo 1KMO IS UNLIGANDED FECA.