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(-) Description

Title :  CRYSTAL STRUCTURE OF ENTAMOEBA HISTOLYTICA SERINE ACETYLTRANSFERASE 1 IN COMPLEX WITH L-SERINE
 
Authors :  S. Kumar, S. Gourinath
Date :  18 Dec 10  (Deposition) - 02 Feb 11  (Release) - 23 Feb 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.59
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (3x)
Keywords :  Cysteine Biosynthesis, Serine Acetyltransferas, Left Handed Beta Helix, Acetyl Transferase, Oass, 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 Cysteine Synthase Complex
J. Biol. Chem. 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: 5759

 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
1SER1Mod. Amino AcidSERINE
2SO41Ligand/IonSULFATE ION
Biological Unit 1 (2, 6)
No.NameCountTypeFull Name
1SER3Mod. Amino AcidSERINE
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:374BINDING SITE FOR RESIDUE SER 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 3Q1X)

(-) 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 3Q1X)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3Q1X)

(-) Exons   (0, 0)

(no "Exon" information available for 3Q1X)

(-) 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:268
 aligned with Q9U8X2_ENTHI | Q9U8X2 from UniProtKB/TrEMBL  Length:305

    Alignment length:269
                                    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         
         Q9U8X2_ENTHI     1 MDNYIYSIAHQLYEMYLQDEDAFHSKRDYPHKKVFTELQKLRKIFFPDFFMKHQKITESHIASELTKLVDYIKDSVTAYNDELFAHQCVMAILEKLPSIKRTLKTDLIAAYAGDPAAPGLSLIIRCYPGFQAVIVYRIAHVLYECGERYYCREMMESVHSYTSIDIHPGASIKGHFFIDHGVGVVIGETAIIGEWCRIYQSVTLGAMHFQEEGGVIKRGTKRHPTVGDYVTIGTGAKVLGNIIVGSHVRIGANCWIDRDVDSNQTVYIS 269
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------SATase_N-3q1xA02 A:51-135                                                            ---------------------------------------------------------------------------------------Hexapep-3q1xA01 A:223-258           ----------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....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
                 3q1x A   1 MDNYIYSIAHQLYEMYLQDEDAFHSKRDYPHKKVFTELQKLRKIFFPDFFMKHQKITESHIASELTKLVDYIKDSVTAYNDELFAHQCVMAILEKLPSIKRTLKTDLIAAYAGDPAAPGLSLIIRCYPGFQAVIVYRIAHVLYECGERYYCREMMESVHSYTSIDIHPGASIKGHFFIDHGVGVVIGETAIIGEWCRIYQSVTLGAMHFQEEGGVIKRGTKRHPTVGDYVTIGTGAKVLGNIIVGSHVRIGANCWIDRDVDSNQTVY-S 314
                                    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      | |
                                                                                                                                                                                                                                                                                                    267 |
                                                                                                                                                                                                                                                                                                      314
   Legend:   → Mismatch (orange background)
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  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 3Q1X)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3Q1X)

(-) 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)

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        Q9U8X2_ENTHI | Q9U8X2: 3p1b 3p47

(-) Related Entries Specified in the PDB File

1ssm SERINE ACETYLTRANSFERASE- APOENZYME (TRUNCATED)
1t3d CRYSTAL STRUCTURE OF SERINE ACETYLTRANSFERASE FROM E.COLI AT 2.2A
3p1b
3p47