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(-) Description

Title :  CRYSTAL STRUCTURE OF T.TH. HB8 O-ACETYLSERINE SULFHYDRYLASE COMPLEXED WITH 3-HYDROXYLACTATE
 
Authors :  M. Goto
Date :  13 Feb 07  (Deposition) - 19 Feb 08  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Plp-Dependent, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Goto
Crystal Structure Of T. Th. Hb8 O-Acetylserine Sulfhydrylase Complexed With 3-Hydroxylactate
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - O-ACETYLSERINE (THIOL)-LYASE
    Chains: A
    EC Number: 2.5.1.47
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET-20B
    Expression System Strain: BL21-CODONPLUS(DE3)-RP
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: THERMUS THERMOPHILUS
    Organism Taxid: 300852
    Strain: HB8
    Synonym: O-ACETYLSERINE SULFHYDRYLASE, CYSTEINE SYNTHASE

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (2x): A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (2, 2)
No.NameCountTypeFull Name
13HL1Ligand/Ion(3S)-3-HYDROXYBUTANOIC ACID
2PLP1Ligand/IonPYRIDOXAL-5'-PHOSPHATE
Biological Unit 1 (2, 4)
No.NameCountTypeFull Name
13HL2Ligand/Ion(3S)-3-HYDROXYBUTANOIC ACID
2PLP2Ligand/IonPYRIDOXAL-5'-PHOSPHATE

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELYS A:40 , ASN A:72 , TYR A:172 , GLY A:173 , GLY A:175 , THR A:176 , GLY A:177 , GLY A:178 , THR A:179 , GLN A:218 , GLY A:219 , SER A:263 , PRO A:289 , 3HL A:414 , HOH A:420 , HOH A:448 , HOH A:453BINDING SITE FOR RESIDUE PLP A 413
2AC2SOFTWARELYS A:40 , THR A:69 , GLY A:71 , ASN A:72 , THR A:73 , GLN A:141 , GLY A:219 , PLP A:413 , HOH A:448 , HOH A:555BINDING SITE FOR RESIDUE 3HL A 414

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2ECQ)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2ECQ)

(-) Exons   (0, 0)

(no "Exon" information available for 2ECQ)

(-) 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:302
 aligned with Q5SLE6_THET8 | Q5SLE6 from UniProtKB/TrEMBL  Length:304

    Alignment length:302
                                    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       270       280       290       300  
         Q5SLE6_THET8     1 MRVEGAIGKTPVVRLAKVVEPDMAEVWVKLEGLNPGGSIKDRPAWYMIKDAEERGILRPGSGQVIVEPTSGNTGIGLAMIAASRGYRLILTMPAQMSEERKRVLKAFGAELVLTDPERRMLAAREEALRLKEELGAFMPDQFKNPANVRAHYETTGPELYEALEGRIDAFVYGSGTGGTITGVGRYLKERIPHVKVIAVEPARSNVLSGGKMGQHGFQGMGPGFIPENLDLSLLDGVIQVWEEDAFPLARRLAREEGLFLGMSSGGIVWAALQVARELGPGKRVACISPDGGWKYLSTPLYA 302
               SCOP domains d2ecqa_ A: automated matches                                                                                                                                                                                                                                                                                   SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhh....eee..........eeeeee.hhh.....hhhhhhhhhhhhhhh.........eeee...hhhhhhhhhhhhhhh.eeeeeee...hhhhhhhhhhh..eeeee...hhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhh.....eeeee...hhhhhhhhhhhhhhh...eeeeeee.hhh........................hhhhh.eeeeehhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhh...eeeeee..hhhhhh...... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2ecq A   1 MRVEGAIGKTPVVRLAKVVEPDMAEVWVKLEGLNPGGSIKDRPAWYMIKDAEERGILRPGSGQVIVEPTSGNTGIGLAMIAASRGYRLILTMPAQMSEERKRVLKAFGAELVLTDPERRMLAAREEALRLKEELGAFMPDQFKNPANVRAHYETTGPELYEALEGRIDAFVYGSGTGGTITGVGRYLKERIPHVKVIAVEPARSNVLSGGKMGQHGFQGMGPGFIPENLDLSLLDGVIQVWEEDAFPLARRLAREEGLFLGMSSGGIVWAALQVARELGPGKRVACISPDGGWKYLSTPLYA 302
                                    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       270       280       290       300
   Legend:   → Mismatch (orange background)
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    → 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, 1)

Asymmetric Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2ECQ)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A   (Q5SLE6_THET8 | Q5SLE6)
molecular function
    GO:0004124    cysteine synthase activity    Catalysis of the reaction: O3-acetyl-L-serine + hydrogen sulfide = L-cysteine + acetate.
    GO:0016829    lyase activity    Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
    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.
biological process
    GO:0008652    cellular amino acid biosynthetic process    The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents.
    GO:0019344    cysteine biosynthetic process    The chemical reactions and pathways resulting in the formation of cysteine, 2-amino-3-mercaptopropanoic acid.
    GO:0006535    cysteine biosynthetic process from serine    The chemical reactions and pathways resulting in the formation of cysteine from other compounds, including serine.

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 Related Entries

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        Q5SLE6_THET8 | Q5SLE6: 1ve1 2eco 2efy

(-) Related Entries Specified in the PDB File

2eco