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

(-) Description

Title :  HUMAN MITOCHONDRIAL BETA-KETOACYL ACP SYNTHASE COMPLEXED WITH HEXANOIC ACID
 
Authors :  C. E. Christensen, B. B. Kragelund, P. Von Wettstein-Knowles, A. Hen
Date :  05 Jul 06  (Deposition) - 06 Feb 07  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.65
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Mitochondria, Mitochondrion, Lipid Synthesis, Fatty Acid Synthesis, Fatty Acid Biosynthesis, Beta-Ketoacyl Acp Synthase, Transit Peptide, Acyltransferase, Claisen Condensation, Kas, Cerulenin, Transferase, Homo Sapiens (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  C. E. Christensen, B. B. Kragelund, P. Von Wettstein-Knowles, A. Henriksen
Structure Of The Human Beta-Ketoacyl [Acp] Synthase From The Mitochondrial Type Ii Fatty Acid Synthase.
Protein Sci. V. 16 261 2007
PubMed-ID: 17242430  |  Reference-DOI: 10.1110/PS.062473707
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - 3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE
    ChainsA, B
    EC Number2.3.1.41
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPQE30
    Expression System StrainK12
    Expression System Taxid562
    Expression System VariantM15(PREP4)
    FragmentRESIDUES 38-459
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    Other DetailsSUMIO SUGANO, UNIVERSITY OF TOKYO SUPPLIED DNA
    SynonymBETA-KETOACYL SYNTHASE

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 4)

Asymmetric/Biological Unit (2, 4)
No.NameCountTypeFull Name
16NA2Ligand/IonHEXANOIC ACID
2NH42Ligand/IonAMMONIUM ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN A:346 , ALA A:347 , GLU A:394 , THR A:442 , ASN A:443BINDING SITE FOR RESIDUE NH4 A1461
2AC2SOFTWAREASN B:346 , ALA B:347 , GLU B:394 , THR B:442 , ASN B:443BINDING SITE FOR RESIDUE NH4 B1461
3AC3SOFTWAREGLY A:153 , ALA A:208 , CYS A:209 , PHE A:248 , GLY A:446 , PHE A:447BINDING SITE FOR RESIDUE 6NA A1460
4AC4SOFTWAREGLY B:153 , ALA B:208 , CYS B:209 , ASP B:237 , PHE B:248 , GLY B:446 , PHE B:447BINDING SITE FOR RESIDUE 6NA B1460

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (2, 4)

Asymmetric/Biological Unit (2, 4)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_036064F106IOXSM_HUMANUnclassified  ---A/BF106I
2CancerSNPVAR_OXSM_HUMAN_CCDS2643_1_01 *F106IOXSM_HUMANDisease (Breast cancer)  ---A/BF106I
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 2)

Asymmetric/Biological Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1B_KETOACYL_SYNTHASEPS00606 Beta-ketoacyl synthases active site.OXSM_HUMAN200-216
 
  2A:200-216
B:200-216

(-) Exons   (2, 4)

Asymmetric/Biological Unit (2, 4)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.4aENST000002807014aENSE00000997589chr3:25831571-2583163868OXSM_HUMAN-00--
1.6eENST000002807016eENSE00000997590chr3:25832481-258334881008OXSM_HUMAN1-3263262A:-4-326 (gaps)
B:-4-326 (gaps)
302
302
1.7bENST000002807017bENSE00000997591chr3:25835583-25836025443OXSM_HUMAN326-4591342A:326-459
B:326-459
134
134

(-) 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:426
 aligned with OXSM_HUMAN | Q9NWU1 from UniProtKB/Swiss-Prot  Length:459

    Alignment length:435
                                    34        44        54        64        74        84        94       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     
           OXSM_HUMAN    25 LRSKRKFFGTVPISRLHRRVVITGIGLVTPLGVGTHLVWDRLIGGESGIVSLVGEEYKSIPCSVAAYVPRGSDEGQFNEQNFVSKSDIKSMSSPTIMAIGAAELAMKDSGWHPQSEADQVATGVAIGMGMIPLEVVSETALNFQTKGYNKVSPFFVPKILVNMAAGQVSIRYKLKGPNHAVSTACTTGAHAVGDSFRFIAHGDADVMVAGGTDSCISPLSLAGFSRARALSTNSDPKLACRPFHPKRDGFVMGEGAAVLVLEEYEHAVQRRARIYAEVLGYGLSGDAGHITAPDPEGEGALRCMAAALKDAGVQPEEISYINAHATSTPLGDAAENKAIKHLFKDHAYALAVSSTKGATGHLLGAAGAVEAAFTTLACYYQKLPPTLNLDCSEPEFDLNYVPLKAQEWKTEKRFIGLTNSFGFGGTNATLCIAGL 459
               SCOP domains d2iw         za1 A:-4-296 automated matches                                                                                                                                                                                                                                     d2iwza2 A:297-459 automated matches                                                                                                                                 SCOP domains
               CATH domains 2iwz         A01 A:-4-303  [code=3.40.47.10, no name defined]                                                                                                                                                                                                                          2iwzA02 A:304-459  [code=3.40.47.10, no name defined]                                                                                                        CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...e---------eeee..eeeeeeeeee..eehhhhhhhhhhh....eee..hhhhh.....eee...........hhhhh.hhhhhh..hhhhhhhhhhhhhhhhhhh....hhhhhhheeeeeee...hhhhhhhhhhhhhhhhhhhh..hhhhhh..hhhhhhhhhhhh....ee...hhhhhhhhhhhhhhhhhhhh...eeeeeeee...hhhhhhhhhhh...........................eeeeeeeeehhhhhhh.....eeeeeeeeee...........hhhhhhhhhhhhhhhh.hhhhh.eee.....hhhhhhhhhhhhhhhhhhhhhh.eee.hhhhhh.hhhhhhhhhhhhhhhhhhhhee......................ee.......eeeeeeee...eeeeeeee.. Sec.struct. author
             SAPs(SNPs) (1) ---------------------------------------------------------------------------------I----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ---------------------------------------------------------------------------------I----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------B_KETOACYL_SYNTHA--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.6e  PDB: A:-4-326 (gaps) UniProt: 1-326 [INCOMPLETE]                                                                                                                                                                                                                                                   ------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (1)
           Transcript 1 (2) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Exon 1.7b  PDB: A:326-459 UniProt: 326-459                                                                                             Transcript 1 (2)
                 2iwz A  -4 IEGR---------SRLHRRVVITGIGLVTPLGVGTHLVWDRLIGGESGIVSLVGEEYKSIPCSVAAYVPRGSDEGQFNEQNFVSKSDIKSMSSPTIMAIGAAELAMKDSGWHPQSEADQVATGVAIGMGMIPLEVVSETALNFQTKGYNKVSPFFVPKILVNMAAGQVSIRYKLKGPNHAVSTACTTGAHAVGDSFRFIAHGDADVMVAGGTDSCISPLSLAGFSRARALSTNSDPKLACRPFHPKRDGFVMGEGAAVLVLEEYEHAVQRRARIYAEVLGYGLSGDAGHITAPDPEGEGALRCMAAALKDAGVQPEEISYINAHATSTPLGDAAENKAIKHLFKDHAYALAVSSTKGATGHLLGAAGAVEAAFTTLACYYQKLPPTLNLDCSEPEFDLNYVPLKAQEWKTEKRFIGLTNSFGFGGTNATLCIAGL 459
                               |     -   |    44        54        64        74        84        94       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     
                              -1        38                                                                                                                                                                                                                                                                                                                                                                                                                                     

Chain B from PDB  Type:PROTEIN  Length:426
 aligned with OXSM_HUMAN | Q9NWU1 from UniProtKB/Swiss-Prot  Length:459

    Alignment length:435
                                    34        44        54        64        74        84        94       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     
           OXSM_HUMAN    25 LRSKRKFFGTVPISRLHRRVVITGIGLVTPLGVGTHLVWDRLIGGESGIVSLVGEEYKSIPCSVAAYVPRGSDEGQFNEQNFVSKSDIKSMSSPTIMAIGAAELAMKDSGWHPQSEADQVATGVAIGMGMIPLEVVSETALNFQTKGYNKVSPFFVPKILVNMAAGQVSIRYKLKGPNHAVSTACTTGAHAVGDSFRFIAHGDADVMVAGGTDSCISPLSLAGFSRARALSTNSDPKLACRPFHPKRDGFVMGEGAAVLVLEEYEHAVQRRARIYAEVLGYGLSGDAGHITAPDPEGEGALRCMAAALKDAGVQPEEISYINAHATSTPLGDAAENKAIKHLFKDHAYALAVSSTKGATGHLLGAAGAVEAAFTTLACYYQKLPPTLNLDCSEPEFDLNYVPLKAQEWKTEKRFIGLTNSFGFGGTNATLCIAGL 459
               SCOP domains d2iw         zb1 B:-4-296 automated matches                                                                                                                                                                                                                                     d2iwzb2 B:297-459 automated matches                                                                                                                                 SCOP domains
               CATH domains 2iwz         B01 B:-4-303  [code=3.40.47.10, no name defined]                                                                                                                                                                                                                          2iwzB02 B:304-459  [code=3.40.47.10, no name defined]                                                                                                        CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...e---------eeee..eeeeeeeeee..eehhhhhhhhhhh....eee..hhhhh.....eee...........hhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhheeeeeee...hhhhhhhhhhhhhhhhhhhh..hhhhhhh.hhhhhhhhhhhh....ee...hhhhhhhhhhhhhhhhhhhh...eeeeeeee...hhhhhhhhhhh...........................eeeeeeeeehhhhhhh.....eeeeeeeeee...........hhhhhhhhhhhhhhhh.hhhhh.eee.....hhhhhhhhhhhhhhhhhhhhhh.eee.hhhhhh.hhhhhhhhhhhhhhhhhhhhee......................ee.......eeeeeeee...eeeeeeee.. Sec.struct. author
             SAPs(SNPs) (1) ---------------------------------------------------------------------------------I----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ---------------------------------------------------------------------------------I----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------B_KETOACYL_SYNTHA--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.6e  PDB: B:-4-326 (gaps) UniProt: 1-326 [INCOMPLETE]                                                                                                                                                                                                                                                   ------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (1)
           Transcript 1 (2) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Exon 1.7b  PDB: B:326-459 UniProt: 326-459                                                                                             Transcript 1 (2)
                 2iwz B  -4 IEGR---------SRLHRRVVITGIGLVTPLGVGTHLVWDRLIGGESGIVSLVGEEYKSIPCSVAAYVPRGSDEGQFNEQNFVSKSDIKSMSSPTIMAIGAAELAMKDSGWHPQSEADQVATGVAIGMGMIPLEVVSETALNFQTKGYNKVSPFFVPKILVNMAAGQVSIRYKLKGPNHAVSTACTTGAHAVGDSFRFIAHGDADVMVAGGTDSCISPLSLAGFSRARALSTNSDPKLACRPFHPKRDGFVMGEGAAVLVLEEYEHAVQRRARIYAEVLGYGLSGDAGHITAPDPEGEGALRCMAAALKDAGVQPEEISYINAHATSTPLGDAAENKAIKHLFKDHAYALAVSSTKGATGHLLGAAGAVEAAFTTLACYYQKLPPTLNLDCSEPEFDLNYVPLKAQEWKTEKRFIGLTNSFGFGGTNATLCIAGL 459
                               |     -   |    44        54        64        74        84        94       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     
                              -1        38                                                                                                                                                                                                                                                                                                                                                                                                                                     

   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, 4)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 4)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (14, 14)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (OXSM_HUMAN | Q9NWU1)
molecular function
    GO:0004315    3-oxoacyl-[acyl-carrier-protein] synthase activity    Catalysis of the reaction: acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] = 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein].
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    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:0016746    transferase activity, transferring acyl groups    Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor).
    GO:0016747    transferase activity, transferring acyl groups other than amino-acyl groups    Catalysis of the transfer of an acyl group, other than amino-acyl, from one compound (donor) to another (acceptor).
biological process
    GO:0006637    acyl-CoA metabolic process    The chemical reactions and pathways involving acyl-CoA, any derivative of coenzyme A in which the sulfhydryl group is in thiolester linkage with an acyl group.
    GO:0006633    fatty acid biosynthetic process    The chemical reactions and pathways resulting in the formation of a fatty acid, any of the aliphatic monocarboxylic acids that can be liberated by hydrolysis from naturally occurring fats and oils. Fatty acids are predominantly straight-chain acids of 4 to 24 carbon atoms, which may be saturated or unsaturated; branched fatty acids and hydroxy fatty acids also occur, and very long chain acids of over 30 carbons are found in waxes.
    GO:0006631    fatty acid metabolic process    The chemical reactions and pathways involving fatty acids, aliphatic monocarboxylic acids liberated from naturally occurring fats and oils by hydrolysis.
    GO:0006629    lipid metabolic process    The chemical reactions and pathways involving lipids, compounds soluble in an organic solvent but not, or sparingly, in an aqueous solvent. Includes fatty acids; neutral fats, other fatty-acid esters, and soaps; long-chain (fatty) alcohols and waxes; sphingoids and other long-chain bases; glycolipids, phospholipids and sphingolipids; and carotenes, polyprenols, sterols, terpenes and other isoprenoids.
    GO:0051792    medium-chain fatty acid biosynthetic process    The chemical reactions and pathways resulting in the formation of any fatty acid with a chain length of between C6 and C12.
    GO:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
    GO:0051790    short-chain fatty acid biosynthetic process    The chemical reactions and pathways resulting in the formation of fatty acids with a chain length of less than C6.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.

 Visualization

(-) Interactive Views

Asymmetric/Biological 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
    6NA  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    NH4  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
 
  Sites
    AC1  [ RasMol ]  +environment [ RasMol ]
    AC2  [ RasMol ]  +environment [ RasMol ]
    AC3  [ RasMol ]  +environment [ RasMol ]
    AC4  [ RasMol ]  +environment [ RasMol ]
 
  Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 2iwz)
 

(-) 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
  2iwz
    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
  OXSM_HUMAN | Q9NWU1
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  2.3.1.41
    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
  OXSM_HUMAN | Q9NWU1
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

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

UniProtKB/Swiss-Prot
        OXSM_HUMAN | Q9NWU12c9h 2iwy

(-) Related Entries Specified in the PDB File

2c9h STRUCTURE OF MITOCHONDRIAL BETA-KETOACYL SYNTHASE
2iwy HUMAN MITOCHONDRIAL BETA-KETOACYL ACP SYNTHASE
2ix4 ARABIDOPSIS THALIANA MITOCHONDRIAL BETA-KETOACYL ACP SYNTHASE HEXANOIC ACID COMPLEX