Show PDB file:   
         Plain Text   HTML   (compressed file size)
QuickSearch:   
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)Asym.Unit - manually
(-)Asymmetric Unit
(-)Asym. Unit - sites
(-)Biological Unit 1
(-)Biol. Unit 1 - sites
(-)Biological Unit 2
collapse expand < >
Image Asym.Unit - manually
Asym.Unit - manually  (Jmol Viewer)
Image Asymmetric Unit
Asymmetric Unit  (Jmol Viewer)
Image Asym. Unit - sites
Asym. Unit - sites  (Jmol Viewer)
Image Biological Unit 1
Biological Unit 1  (Jmol Viewer)
Image Biol. Unit 1 - sites
Biol. Unit 1 - sites  (Jmol Viewer)
Image Biological Unit 2
Biological Unit 2  (Jmol Viewer)

(-) Description

Title :  CRYSTAL STRUCTURE OF ALPHA1,3-FUCOSYLTRANSFERASE WITH GDP-FUCOSE
 
Authors :  H. Y. Sun, T. P. Ko
Date :  27 Nov 06  (Deposition) - 23 Jan 07  (Release) - 05 Jul 17  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.05
Chains :  Asym. Unit :  A,B,C
Biol. Unit 1:  A,B  (1x)
Biol. Unit 2:  C  (2x)
Keywords :  Alpha1, 3-Fucosyltransferase, Fucosyltransferase, Fuct, Gt 10, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  H. Y. Sun, S. W. Lin, T. P. Ko, J. F. Pan, C. L. Liu, C. N. Lin, A. H. Wang, C. H. Lin
Structure And Mechanism Of Helicobacter Pylori Fucosyltransferase. A Basis For Lipopolysaccharide Variatio And Inhibitor Design.
J. Biol. Chem. V. 282 9973 2007
PubMed-ID: 17251184  |  Reference-DOI: 10.1074/JBC.M610285200

(-) Compounds

Molecule 1 - ALPHA1,3-FUCOSYLTRANSFERASE
    ChainsA, B, C
    EC Number2.4.1.152
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21(DE3)
    Expression System PlasmidPET21B
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System Vector TypePLASMID
    FragmentC-TERMINCAL TRUNCATED DOMAIN
    GeneAF008596
    Organism ScientificHELICOBACTER PYLORI
    Organism Taxid210
    StrainNCTC 11639

 Structural Features

(-) Chains, Units

  123
Asymmetric Unit ABC
Biological Unit 1 (1x)AB 
Biological Unit 2 (2x)  C

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 8)

Asymmetric Unit (3, 8)
No.NameCountTypeFull Name
1FUC3Ligand/IonALPHA-L-FUCOSE
2GDP3Ligand/IonGUANOSINE-5'-DIPHOSPHATE
3SO42Ligand/IonSULFATE ION
Biological Unit 1 (3, 5)
No.NameCountTypeFull Name
1FUC2Ligand/IonALPHA-L-FUCOSE
2GDP2Ligand/IonGUANOSINE-5'-DIPHOSPHATE
3SO41Ligand/IonSULFATE ION
Biological Unit 2 (3, 6)
No.NameCountTypeFull Name
1FUC2Ligand/IonALPHA-L-FUCOSE
2GDP2Ligand/IonGUANOSINE-5'-DIPHOSPHATE
3SO42Ligand/IonSULFATE ION

(-) Sites  (8, 8)

Asymmetric Unit (8, 8)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY A:94 , LEU A:124 , ASN A:240 , TYR A:246 , THR A:248 , GLU A:249 , LYS A:250 , GDP A:3001BINDING SITE FOR RESIDUE FUC A 4001
2AC2SOFTWAREGLY B:94 , LEU B:124 , ASN B:240 , TYR B:246 , THR B:248 , GLU B:249 , LYS B:250 , GDP B:3002BINDING SITE FOR RESIDUE FUC B 4002
3AC3SOFTWAREGLY C:94 , LEU C:124 , ASN C:240 , TYR C:246 , THR C:248 , GLU C:249 , LYS C:250 , GDP C:3003BINDING SITE FOR RESIDUE FUC C 4003
4AC4SOFTWAREHIS B:300 , LYS B:301 , ASN B:302 , ALA B:303 , HOH B:4222BINDING SITE FOR RESIDUE SO4 B 2001
5AC5SOFTWAREHIS C:300 , LYS C:301 , ASN C:302 , ALA C:303 , HOH C:4096BINDING SITE FOR RESIDUE SO4 C 2002
6AC6SOFTWAREVAL A:186 , ALA A:187 , SER A:188 , ASN A:189 , ARG A:195 , ASN A:221 , VAL A:222 , LYS A:223 , LYS A:225 , ASN A:240 , GLU A:249 , LYS A:250 , FUC A:4001 , HOH A:4043 , HOH A:4391BINDING SITE FOR RESIDUE GDP A 3001
7AC7SOFTWAREVAL B:186 , ALA B:187 , SER B:188 , ASN B:189 , ARG B:195 , GLY B:211 , GLY B:212 , ASN B:221 , VAL B:222 , LYS B:223 , LYS B:225 , ASN B:240 , GLU B:249 , LYS B:250 , FUC B:4002 , HOH B:4137 , HOH B:4148 , HOH B:4149BINDING SITE FOR RESIDUE GDP B 3002
8AC8SOFTWAREVAL C:186 , ALA C:187 , SER C:188 , ASN C:189 , ARG C:195 , GLY C:212 , ASN C:221 , VAL C:222 , LYS C:223 , LYS C:225 , ASN C:240 , GLU C:249 , LYS C:250 , FUC C:4003 , HOH C:4085 , HOH C:4187BINDING SITE FOR RESIDUE GDP C 3003

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2NZY)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2NZY)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 2NZY)

(-) 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:343
 aligned with FUCT_HELPX | O30511 from UniProtKB/Swiss-Prot  Length:478

    Alignment length:352
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350  
           FUCT_HELPX     1 MFQPLLDAYVESASIEKMASKSPPPLKIAVANWWGDEEIKEFKNSVLYFILSQRYTITLHQNPNEFSDLVFGNPLGSARKILSYQNAKRVFYTGENESPNFNLFDYAIGFDELDFNDRYLRMPLYYDRLHHKAESVNDTTAPYKLKDNSLYALKKPSHCFKEKHPNLCAVVNDESDPLKRGFASFVASNPNAPIRNAFYDALNSIEPVTGGGSVRNTLGYNVKNKNEFLSQYKFNLCFENTQGYGYVTEKIIDAYFSHTIPIYWGSPSVAKDFNPKSFVNVHDFKNFDEAIDYIKYLHTHKNAYLDMLYENPLNTLDGKAYFYQNLSFKKILAFFKTILENDTIYHDNPFIF 352
               SCOP domains d2nzya_ A: Alpha1,3-fucosyltransferase FucT                                                                                                                                                                                                                                                                                                                      SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhh...........eeeee.....hhhhhhhhhhhhhhhhhhh..eeeee........ee....---------......eee.............eeee.....hhh.eee.hhhhhhhhhhhhhh............hhhhh.....hhhhhhhhhhhhhh........eeeee......hhhhhhhhhhhhh...eee.............hhhhhhh.eeeeeee.........hhhhhhhhhh..eeeee...hhhhhhhhhhhee.hhh.hhhhhhhhhhhhhhhhhhhhhhhh....eee..eeehhhhhhhhhhhhhhhhhhhh........... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2nzy A   1 MFQPLLDAYVESASIEKMASKSPPPLKIAVANWWGDEEIKEFKNSVLYFILSQRYTITLHQNPNEFSDLVFGNP---------YQNAKRVFYTGENESPNFNLFDYAIGFDELDFNDRYLRMPLYYDRLHHKAESVNDTTAPYKLKDNSLYALKKPSHCFKEKHPNLCAVVNDESDPLKRGFASFVASNPNAPIRNAFYDALNSIEPVTGGGSVRNTLGYNVKNKNEFLSQYKFNLCFENTQGYGYVTEKIIDAYFSHTIPIYWGSPSVAKDFNPKSFVNVHDFKNFDEAIDYIKYLHTHKNAYLDMLYENPLNTLDGKAYFYQNLSFKKILAFFKTILENDTIYHDNPFIF 352
                                    10        20        30        40        50        60        70   |     -   |    90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350  
                                                                                                    74        84                                                                                                                                                                                                                                                                            

Chain B from PDB  Type:PROTEIN  Length:338
 aligned with FUCT_HELPX | O30511 from UniProtKB/Swiss-Prot  Length:478

    Alignment length:348
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340        
           FUCT_HELPX     1 MFQPLLDAYVESASIEKMASKSPPPLKIAVANWWGDEEIKEFKNSVLYFILSQRYTITLHQNPNEFSDLVFGNPLGSARKILSYQNAKRVFYTGENESPNFNLFDYAIGFDELDFNDRYLRMPLYYDRLHHKAESVNDTTAPYKLKDNSLYALKKPSHCFKEKHPNLCAVVNDESDPLKRGFASFVASNPNAPIRNAFYDALNSIEPVTGGGSVRNTLGYNVKNKNEFLSQYKFNLCFENTQGYGYVTEKIIDAYFSHTIPIYWGSPSVAKDFNPKSFVNVHDFKNFDEAIDYIKYLHTHKNAYLDMLYENPLNTLDGKAYFYQNLSFKKILAFFKTILENDTIYHDN 348
               SCOP domains d2nzyb_ B: Alpha1,3-fucosyltransferase FucT                                                                                                                                                                                                                                                                                                                  SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author hhhhhhhhhhhhh...........eeeeee....hhhhhhhhhhhhhhhhhh...eeeee........eeee..----------....eeee.............eeee.....hhh.eee.hhhhhhhhhhhhhh............hhhhh.....hhhhhhhhhhhhhh........eeeee......hhhhhhhhhhhhh....ee.............hhhhhhhheeeeeee.........hhhhhhhhhh..eeeee...hhhhh.hhhhhee.hhh.hhhhhhhhhhhhhhhhhhhhhhhh....eee..eeehhhhhhhhhhhhhhhhhhhh....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2nzy B   1 MFQPLLDAYVESASIEKMASKSPPPLKIAVANWWGDEEIKEFKNSVLYFILSQRYTITLHQNPNEFSDLVFGNP----------QNAKRVFYTGENESPNFNLFDYAIGFDELDFNDRYLRMPLYYDRLHHKAESVNDTTAPYKLKDNSLYALKKPSHCFKEKHPNLCAVVNDESDPLKRGFASFVASNPNAPIRNAFYDALNSIEPVTGGGSVRNTLGYNVKNKNEFLSQYKFNLCFENTQGYGYVTEKIIDAYFSHTIPIYWGSPSVAKDFNPKSFVNVHDFKNFDEAIDYIKYLHTHKNAYLDMLYENPLNTLDGKAYFYQNLSFKKILAFFKTILENDTIYHDN 348
                                    10        20        30        40        50        60        70   |     -    |   90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340        
                                                                                                    74         85                                                                                                                                                                                                                                                                       

Chain C from PDB  Type:PROTEIN  Length:351
 aligned with FUCT_HELPX | O30511 from UniProtKB/Swiss-Prot  Length:478

    Alignment length:351
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350 
           FUCT_HELPX     1 MFQPLLDAYVESASIEKMASKSPPPLKIAVANWWGDEEIKEFKNSVLYFILSQRYTITLHQNPNEFSDLVFGNPLGSARKILSYQNAKRVFYTGENESPNFNLFDYAIGFDELDFNDRYLRMPLYYDRLHHKAESVNDTTAPYKLKDNSLYALKKPSHCFKEKHPNLCAVVNDESDPLKRGFASFVASNPNAPIRNAFYDALNSIEPVTGGGSVRNTLGYNVKNKNEFLSQYKFNLCFENTQGYGYVTEKIIDAYFSHTIPIYWGSPSVAKDFNPKSFVNVHDFKNFDEAIDYIKYLHTHKNAYLDMLYENPLNTLDGKAYFYQNLSFKKILAFFKTILENDTIYHDNPFI 351
               SCOP domains d2nzyc_ C: Alpha1,3-fucosyltransferase FucT                                                                                                                                                                                                                                                                                                                     SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhh...........eeeee.....hhhhhhhhhhhhhhhhhhh..eeeee........eeee..hhhhhhhhh....eeeee.............eeee.....hhh.eee.hhhhhhhhhhhhhh............hhhhhh....hhhhhhhhhhhhhh........eeeee......hhhhhhhhhhhhhhh..ee.............hhhhhhhheeeeeee.........hhhhhhhhhh..eeeee...hhhhhhhhhhhee.hhh.hhhhhhhhhhhhhhhhhhhhhhhhh...eee..eeehhhhhhhhhhhhhhhhhhhh.......... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2nzy C   1 MFQPLLDAYVESASIEKMASKSPPPLKIAVANWWGDEEIKEFKNSVLYFILSQRYTITLHQNPNEFSDLVFGNPLGSARKILSYQNAKRVFYTGENESPNFNLFDYAIGFDELDFNDRYLRMPLYYDRLHHKAESVNDTTAPYKLKDNSLYALKKPSHCFKEKHPNLCAVVNDESDPLKRGFASFVASNPNAPIRNAFYDALNSIEPVTGGGSVRNTLGYNVKNKNEFLSQYKFNLCFENTQGYGYVTEKIIDAYFSHTIPIYWGSPSVAKDFNPKSFVNVHDFKNFDEAIDYIKYLHTHKNAYLDMLYENPLNTLDGKAYFYQNLSFKKILAFFKTILENDTIYHDNPFI 351
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350 

   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, 3)

Asymmetric Unit

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2NZY)

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C   (FUCT_HELPX | O30511)
molecular function
    GO:0008417    fucosyltransferase activity    Catalysis of the transfer of a fucosyl group to an acceptor molecule, typically another carbohydrate or a lipid.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
    GO:0016757    transferase activity, transferring glycosyl groups    Catalysis of the transfer of a glycosyl group from one compound (donor) to another (acceptor).
biological process
    GO:0036065    fucosylation    The covalent attachment of a fucosyl group to an acceptor molecule.
    GO:0006486    protein glycosylation    A protein modification process that results in the addition of a carbohydrate or carbohydrate derivative unit to a protein amino acid, e.g. the addition of glycan chains to proteins.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

 Visualization

(-) Interactive Views

Asymmetric Unit
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
    STRAP
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    RasMol
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
 
  Ligands, Modified Residues, Ions
    FUC  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    GDP  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    SO4  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
 
  Sites
    AC1  [ RasMol ]  +environment [ RasMol ]
    AC2  [ RasMol ]  +environment [ RasMol ]
    AC3  [ RasMol ]  +environment [ RasMol ]
    AC4  [ RasMol ]  +environment [ RasMol ]
    AC5  [ RasMol ]  +environment [ RasMol ]
    AC6  [ RasMol ]  +environment [ RasMol ]
    AC7  [ RasMol ]  +environment [ RasMol ]
    AC8  [ RasMol ]  +environment [ RasMol ]
 
  Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 2nzy)
 
Biological Units
  Complete Structure
    Biological Unit 1  [ Jena3D ]
    Biological Unit 2  [ Jena3D ]

(-) Still Images

Jmol
  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
Molscript
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
  2nzy
    Family and Domain InformationProDom | SYSTERS
    General Structural InformationGlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in MembranesOPM
    Protein SurfaceSURFACE
    Secondary StructureDSSP (structure derived) | HSSP (homology derived)
    Structural GenomicsGeneCensus
    Structural NeighboursCE | VAST
    Structure ClassificationCATH | Dali | SCOP
    Validation and Original DataBMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
 
Access by UniProt ID/Accession number
  FUCT_HELPX | O30511
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  2.4.1.152
    General Enzyme InformationBRENDA | EC-PDB | Enzyme | IntEnz
    PathwayKEGG | MetaCyc
 
Access by Disease Identifier   (MIM ID)
  (no 'MIM ID' available)
    Disease InformationOMIM
 
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related InformationGenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain InformationXDom
    Interatomic Contacts of Structural UnitsCSU
    Ligand-protein ContactsLPC
    Protein CavitiescastP
    Sequence and Secondary StructurePDBCartoon
    Structure AlignmentSTRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence BrowserSTING
 
Access by UniProt ID/Accession number
  FUCT_HELPX | O30511
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

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

UniProtKB/Swiss-Prot
        FUCT_HELPX | O305112nzw 2nzx

(-) Related Entries Specified in the PDB File

2nzw THE SAME PROTEIN COMPLEXED WITH GDP.
2nzx THE SAME PROTEIN COMPLEXED WITH GDP.