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(-) Description

Title :  CRYSTAL STRUCTURE OF ENTAMOEBA HISTOLYTICA SERINE ACETYLTRANSFERASE 1 IN COMPLEX WITH L-CYSTEINE
 
Authors :  S. Kumar, S. Gourinath
Date :  06 Oct 10  (Deposition) - 02 Feb 11  (Release) - 05 Mar 14  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.78
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (3x)
Keywords :  Serine Acetyltransferase, Cysteine Synthase, Acetyltransferase, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Kumar, I. Raj, I. Nagpal, N. Subbarao, S. Gourinath
Structural And Biochemical Studies Of Serine Acetyltransferase Reveal Why The Parasite Entamoeba Histolytica Cannot Form A Cysteine Synthase Complex
J. Biol. Chem. V. 286 12533 2011
PubMed-ID: 21297164  |  Reference-DOI: 10.1074/JBC.M110.197376

(-) Compounds

Molecule 1 - SERINE ACETYLTRANSFERASE
    Chains: A
    EC Number: 2.3.1.30
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET21C
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Gene: CYSE
    Organism Scientific: ENTAMOEBA HISTOLYTICA
    Organism Taxid: 294381

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (3x): A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (2, 2)
No.NameCountTypeFull Name
1CYS1Mod. Amino AcidCYSTEINE
2SO41Ligand/IonSULFATE ION
Biological Unit 1 (2, 6)
No.NameCountTypeFull Name
1CYS3Mod. Amino AcidCYSTEINE
2SO43Ligand/IonSULFATE ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:114 , ALA A:116 , ASP A:179 , HIS A:180 , ALA A:206 , HIS A:208 , ARG A:222 , HIS A:223 , HOH A:323BINDING SITE FOR RESIDUE CYS A 314
2AC2SOFTWARESER A:201 , GLY A:235 , LYS A:237BINDING SITE FOR RESIDUE SO4 A 315

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3P47)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Glu A:212 -Gly A:213

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3P47)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3P47)

(-) Exons   (0, 0)

(no "Exon" information available for 3P47)

(-) 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:271
 aligned with Q9U8X2_ENTHI | Q9U8X2 from UniProtKB/TrEMBL  Length:305

    Alignment length:281
                              1                                                                                                                                                                                                                                                                                      
                              |      8        18        28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278 
         Q9U8X2_ENTHI     - --MDNYIYSIAHQLYEMYLQDEDAFHSKRDYPHKKVFTELQKLRKIFFPDFFMKHQKITESHIASELTKLVDYIKDSVTAYNDELFAHQCVMAILEKLPSIKRTLKTDLIAAYAGDPAAPGLSLIIRCYPGFQAVIVYRIAHVLYECGERYYCREMMESVHSYTSIDIHPGASIKGHFFIDHGVGVVIGETAIIGEWCRIYQSVTLGAMHFQEEGGVIKRGTKRHPTVGDYVTIGTGAKVLGNIIVGSHVRIGANCWIDRDVDSNQTVYISEHPTHFVKPC 279
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------SATase_N-3p47A02 A:51-135                                                            ---------------------------------------------------------------------------------------Hexapep-3p47A01 A:223-258           --------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhh.ee....ee....ee......ee....ee....ee....eee...................ee....ee....eee...ee...eee....ee.......eee..----------. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3p47 A  -1 ASMDNYIYSIAHQLYEMYLQDEDAFHSKRDYPHKKVFTELQKLRKIFFPDFFMKHQKITESHIASELTKLVDYIKDSVTAYNDELFAHQCVMAILEKLPSIKRTLKTDLIAAYAGDPAAPGLSLIIRCYPGFQAVIVYRIAHVLYECGERYYCREMMESVHSYTSIDIHPGASIKGHFFIDHGVGVVIGETAIIGEWCRIYQSVTLGAMHFQEEGGVIKRGTKRHPTVGDYVTIGTGAKVLGNIIVGSHVRIGANCWIDRDVDSNQTVYI----------C 314
                                     8        18        28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268         -|
                                                                                                                                                                                                                                                                                                       268        314
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
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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  (0, 0)

(no "SCOP Domain" information available for 3P47)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3P47)

(-) Pfam Domains  (2, 2)

Asymmetric Unit
(-)
Clan: no clan defined [family: Hexapep] (52)
(-)
Clan: no clan defined [family: SATase_N] (8)

(-) Gene Ontology  (1, 1)

Asymmetric Unit(hide GO term definitions)
Chain A   (Q9U8X2_ENTHI | Q9U8X2)
molecular function
    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.

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  2.3.1.30
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 Related Entries

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

UniProtKB/TrEMBL
        Q9U8X2_ENTHI | Q9U8X2: 3p1b 3q1x

(-) Related Entries Specified in the PDB File

1ssq CRYSTAL STRUCTURE OF SERINE ACETYLTRANSFERASE FROM H. INFLUENZAE IN COMPLEX WITH CYSTEINE.
1t3d CRYSTAL STRUCTURE OF SERINE ACETYLTRANSFERASE FROM E. COLI
3p1b
3q1x