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(-) Description

Title :  SOLUTION STRUCTURE OF DELTA-5-3-KETOSTEROID ISOMERASE COMPLEXED WITH THE STEROID 19-NORTESTOSTERONE-HEMISUCCINATE
 
Authors :  M. A. Massiah, C. Abeygunawardana, A. G. Gittis, A. S. Mildvan
Date :  04 Sep 98  (Deposition) - 20 Jan 99  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A,B  (15x)
Keywords :  Ketosteroid Isomerase-19Nths, Enzyme-Substrate Complex, Enzymes (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. A. Massiah, C. Abeygunawardana, A. G. Gittis, A. S. Mildvan
Solution Structure Of Delta 5-3-Ketosteroid Isomerase Complexed With The Steroid 19-Nortestosterone Hemisuccinate.
Biochemistry V. 37 14701 1998
PubMed-ID: 9778345  |  Reference-DOI: 10.1021/BI981447B
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PROTEIN (3-KETOSTEROID ISOMERASE-19- NORTESTOSTERONE-HEMISUCCINATE)
    Chains: A, B
    EC Number: 5.3.3.1
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Cell Line: BL21/DE3
    Expression System Plasmid: PET-25B
    Expression System Taxid: 562
    Expression System Vector: E.COLI
    Expression System Vector Type: BACTERIAL
    Mutation: YES
    Organism Scientific: COMAMONAS TESTOSTERONI
    Organism Taxid: 285
    Other Details: KSI COMPLEXED WITH 19-NORTESTOSTERONE- HEMISUCCINATE, A SUBSTRATE ANALOG.
    Other Details - Source: PET-25B+GENE
    Synonym: KSI

 Structural Features

(-) Chains, Units

  
NMR Structure (15x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

NMR Structure (1, 2)
No.NameCountTypeFull Name
1NTH2Ligand/IonSUCCINIC ACID MONO-(13-METHYL-3-OXO-2,3,6,7,8,9,10,11,12,13,14,15,16,17-TETRADECAHYDRO-1H-CYCLOPENTA[A]PHENANTHREN-17-YL) ESTER

(-) Sites  (4, 4)

NMR Structure (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETYR A:14 , ASP A:38 , SER A:58 , LEU A:61 , PHE A:86 , PHE A:88 , ASP A:99 , PHE A:116BINDING SITE FOR RESIDUE NTH A 126
2AC2SOFTWARETYR B:214 , ASP B:238 , SER B:258 , LEU B:261 , PHE B:282 , PHE B:286 , PHE B:288 , VAL B:295 , ASP B:299BINDING SITE FOR RESIDUE NTH B 326
3SBAAUTHORTYR A:14 , ASP A:38 , ASP A:99NULL
4SBBAUTHORTYR B:214 , ASP B:238 , ASP B:299NULL

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (2, 30)

NMR Structure
No.ModelResidues
11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15Asp A:38 -Pro A:39
21, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15Asp B:238 -Pro B:239

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1BUQ)

(-) Exons   (0, 0)

(no "Exon" information available for 1BUQ)

(-) Sequences/Alignments

NMR Structure
   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:125
 aligned with SDIS_COMTE | P00947 from UniProtKB/Swiss-Prot  Length:125

    Alignment length:125
                                    10        20        30        40        50        60        70        80        90       100       110       120     
           SDIS_COMTE     1 MNTPEHMTAVVQRYVAALNAGDLDGIVALFADDATVEDPVGSEPRSGTAAIREFYANSLKLPLAVELTQEVRAVANEAAFAFTVSFEYQGRKTVVAPIDHFRFNGAGKVVSMRALFGEKNIHAGA 125
               SCOP domains d1buqa_ A: Delta-5-3-ketosteroid isomerase, steroid delta-isomerase, KSI                                                      SCOP domains
               CATH domains 1buqA00 A:1-125  [code=3.10.450.50, no name defined]                                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhhhhhhhhh.hhhhhhhh...eeeee.....eeeehhhhhhhhhhhhh..eeeee...eee....eeeeeeeeee....eeeeeeeeeeeee......eeeeee....eeee. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 1buq A   1 MNTPEHMTAVVQRYVAALNAGDLDGIVALFADDATVEDPVGSEPRSGTAAIREFFANSLKLPLAVELTQEVRAVANEAAFAFTVSFEFQGRKTVVAPIDHFRFNGAGKVVSMRALFGEKNIHAGA 125
                                    10        20        30        40        50        60        70        80        90       100       110       120     


Chain B from PDB  Type:PROTEIN  Length:125
 aligned with SDIS_COMTE | P00947 from UniProtKB/Swiss-Prot  Length:125

    Alignment length:125
                                    10        20        30        40        50        60        70        80        90       100       110       120     
           SDIS_COMTE     1 MNTPEHMTAVVQRYVAALNAGDLDGIVALFADDATVEDPVGSEPRSGTAAIREFYANSLKLPLAVELTQEVRAVANEAAFAFTVSFEYQGRKTVVAPIDHFRFNGAGKVVSMRALFGEKNIHAGA 125
               SCOP domains d1buqb_ B: Delta-5-3-ketosteroid isomerase, steroid delta-isomerase, KSI                                                      SCOP domains
               CATH domains 1buqB00 B:201-325  [code=3.10.450.50, no name defined]                                                                        CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhhhhhhhhh.hhhhhhhh...eeeee.....eeeehhhhhhhhhhhhh..eeeee...eee....eeeeeeeeee....eeeeeeeeeeeee......eeeeee....eeee. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 1buq B 201 MNTPEHMTAVVQRYVAALNAGDLDGIVALFADDATVEDPVGSEPRSGTAAIREFFANSLKLPLAVELTQEVRAVANEAAFAFTVSFEFQGRKTVVAPIDHFRFNGAGKVVSMRALFGEKNIHAGA 325
                                   210       220       230       240       250       260       270       280       290       300       310       320
   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, 2)

NMR Structure
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 2)

NMR Structure
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (6, 6)

NMR Structure(hide GO term definitions)
Chain A,B   (SDIS_COMTE | P00947)
molecular function
    GO:0016853    isomerase activity    Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
    GO:0004769    steroid delta-isomerase activity    Catalysis of the reaction: a 3-oxo-delta(5)-steroid = a 3-oxo-delta(4)-steroid.
biological process
    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:0008202    steroid metabolic process    The chemical reactions and pathways involving steroids, compounds with a 1,2,cyclopentanoperhydrophenanthrene nucleus.
    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:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.

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 Related Entries

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

UniProtKB/Swiss-Prot
        SDIS_COMTE | P00947: 1isk 1ocv 1ogz 1ohp 1ohs 1qjg 3m8c 3mhe 3mki 3myt 3nbr 3nhx 3nm2 3nuv 3nxj 3ov4 3t8u 3unl 4l7k 5dre 8cho

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