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(-) Description

Title :  CRYSTAL STRUCTURE OF THE NATIVE SERINE ACETYLTRANSFERASE 1 FROM ENTAMOEBA HISTOLYTICA
 
Authors :  S. Kumar, S. Gourinath
Date :  30 Sep 10  (Deposition) - 02 Feb 11  (Release) - 05 Mar 14  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.77
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (3x)
Keywords :  Serine Acetyltransferase, Transferase, Cysteine Synthesis (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
    Synonym: SERINE ACETYLTRANSFERASE 1

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 4)

Asymmetric Unit (1, 4)
No.NameCountTypeFull Name
1SO44Ligand/IonSULFATE ION
Biological Unit 1 (1, 12)
No.NameCountTypeFull Name
1SO412Ligand/IonSULFATE ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWARESER A:201 , GLY A:235 , LYS A:237BINDING SITE FOR RESIDUE SO4 A 314
2AC2SOFTWAREHIS A:10 , GLU A:14 , THR A:105 , ILE A:108 , HIS A:175 , HOH A:362BINDING SITE FOR RESIDUE SO4 A 315
3AC3SOFTWAREPRO A:115 , ALA A:206 , HIS A:208 , ARG A:222 , HIS A:223 , HOH A:351 , HOH A:364 , HOH A:406 , HOH A:408BINDING SITE FOR RESIDUE SO4 A 316
4AC4SOFTWARELYS A:43 , PHE A:50 , MET A:51 , LYS A:52 , LYS A:55 , HIS A:60BINDING SITE FOR RESIDUE SO4 A 317

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3P1B)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3P1B)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3P1B)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3P1B)

(-) Exons   (0, 0)

(no "Exon" information available for 3P1B)

(-) 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:266
 aligned with Q9U8X2_ENTHI | Q9U8X2 from UniProtKB/TrEMBL  Length:305

    Alignment length:269
                             1                                                                                                                                                                                                                                                                           
                             |       9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259         
         Q9U8X2_ENTHI     - -MDNYIYSIAHQLYEMYLQDEDAFHSKRDYPHKKVFTELQKLRKIFFPDFFMKHQKITESHIASELTKLVDYIKDSVTAYNDELFAHQCVMAILEKLPSIKRTLKTDLIAAYAGDPAAPGLSLIIRCYPGFQAVIVYRIAHVLYECGERYYCREMMESVHSYTSIDIHPGASIKGHFFIDHGVGVVIGETAIIGEWCRIYQSVTLGAMHFQEEGGVIKRGTKRHPTVGDYVTIGTGAKVLGNIIVGSHVRIGANCWIDRDVDSNQTVYI 268
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------SATase_N-3p1bA02 A:51-135                                                            ---------------------------------------------------------------------------------------Hexapep-3p1bA01 A:223-258           ---------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhheee....ee....eee....eee....ee....eee...eee......---..........ee....ee....eee...ee....ee....ee........ee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3p1b A   0 AMDNYIYSIAHQLYEMYLQDEDAFHSKRDYPHKKVFTELQKLRKIFFPDFFMKHQKITESHIASELTKLVDYIKDSVTAYNDELFAHQCVMAILEKLPSIKRTLKTDLIAAYAGDPAAPGLSLIIRCYPGFQAVIVYRIAHVLYECGERYYCREMMESVHSYTSIDIHPGASIKGHFFIDHGVGVVIGETAIIGEWCRIYQSVTLGAMHFQE---VIKRGTKRHPTVGDYVTIGTGAKVLGNIIVGSHVRIGANCWIDRDVDSNQTVYI 268
                                     9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209 |   | 219       229       239       249       259         
                                                                                                                                                                                                                                             211 215
   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 3P1B)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3P1B)

(-) 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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 Related Entries

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

UniProtKB/TrEMBL
        Q9U8X2_ENTHI | Q9U8X2: 3p47 3q1x

(-) Related Entries Specified in the PDB File

1ssm SERINE ACETYLTRANSFERASE- APOENZYME (TRUNCATED)FROM H. INFLUENZAE
1ssq SERINE ACETYLTRANSFERASE- COMPLEX WITH CYSTEINE FROM H. INFLUENZAE
1sst SERINE ACETYLTRANSFERASE- COMPLEX WITH COA FROM H. INFLUENZAE
1t3d CRYSTAL STRUCTURE OF ESCHERICHIA COLI SERINE ACETYLTRANSFERASE
3p47
3q1x