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(-) Description

Title :  TRYPTOPHAN SYNTHASE IN COMPLEX WITH D-GLYCERALDEHYDE 3-PHOSPHATE (G3P)
 
Authors :  H. Ngo, R. Harris, N. Kimmich, P. Casino, D. Niks, L. Blumenstein, T. R. Barends, V. Kulik, M. Weyand, I. Schlichting, M. F. Dunn
Date :  27 Apr 06  (Deposition) - 12 Jun 07  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (2x)
Keywords :  Aromatic Amino Acid Biosynthesis, Tryptophan Biosynthesis, Crbon- Oxygen Lyase, Amino-Acid Biosynthesis, Lyase, Allosteric Enzyme, Pyridoxal Phosphate (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  H. Ngo, R. Harris, N. Kimmich, P. Casino, D. Niks, L. Blumenstein, T. R. Barends, V. Kulik, M. Weyand, I. Schlichting, M. F. Dunn
Synthesis And Characterization Of Allosteric Probes Of Substrate Channeling In The Tryptophan Synthase Bienzyme Complex.
Biochemistry V. 46 7713 2007
PubMed-ID: 17559195  |  Reference-DOI: 10.1021/BI700385F

(-) Compounds

Molecule 1 - TRYPTOPHAN SYNTHASE ALPHA CHAIN
    ChainsA
    EC Number4.2.1.20
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPSTB7
    Expression System StrainCB149
    Expression System Taxid562
    Organism ScientificSALMONELLA TYPHIMURIUM
    Organism Taxid602
 
Molecule 2 - TRYPTOPHAN SYNTHASE BETA CHAIN
    ChainsB
    EC Number4.2.1.20
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPSTB7
    Expression System StrainCB149
    Expression System Taxid562
    Organism ScientificSALMONELLA TYPHIMURIUM
    Organism Taxid602
    Other DetailsINTERNAL ALDIMINE FORMED BETWEEN B-K87 AND C4 OF PYRIDOXAL-5'-PHOSPHATE

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (2x)AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 3)

Asymmetric Unit (3, 3)
No.NameCountTypeFull Name
1G3H1Ligand/IonGLYCERALDEHYDE-3-PHOSPHATE
2NA1Ligand/IonSODIUM ION
3PLP1Ligand/IonPYRIDOXAL-5'-PHOSPHATE
Biological Unit 1 (2, 4)
No.NameCountTypeFull Name
1G3H2Ligand/IonGLYCERALDEHYDE-3-PHOSPHATE
2NA-1Ligand/IonSODIUM ION
3PLP2Ligand/IonPYRIDOXAL-5'-PHOSPHATE

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY B:232 , PHE B:306 , SER B:308 , HOH B:2237 , HOH B:2243BINDING SITE FOR RESIDUE NA B1393
2AC2SOFTWAREILE A:64 , LEU A:100 , TYR A:175 , THR A:183 , GLY A:184 , PHE A:212 , GLY A:213 , ILE A:232 , GLY A:234 , SER A:235 , HOH A:2191 , HOH A:2192BINDING SITE FOR RESIDUE G3H A1268
3AC3SOFTWAREALA B:85 , HIS B:86 , LYS B:87 , GLN B:114 , THR B:190 , CYS B:230 , GLY B:232 , GLY B:233 , GLY B:234 , SER B:235 , ASN B:236 , GLY B:303 , GLU B:350 , SER B:377 , GLY B:378 , HOH B:2196 , HOH B:2224 , HOH B:2341BINDING SITE FOR RESIDUE PLP B1392

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (3, 3)

Asymmetric Unit
No.Residues
1Asp A:27 -Pro A:28
2Arg B:55 -Pro B:56
3His B:195 -Pro B:196

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 2)

Asymmetric Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1TRP_SYNTHASE_ALPHAPS00167 Tryptophan synthase alpha chain signature.TRPA_SALTY48-61  1A:48-61
2TRP_SYNTHASE_BETAPS00168 Tryptophan synthase beta chain pyridoxal-phosphate attachment site.TRPB_SALTY80-94  1B:80-94
Biological Unit 1 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1TRP_SYNTHASE_ALPHAPS00167 Tryptophan synthase alpha chain signature.TRPA_SALTY48-61  2A:48-61
2TRP_SYNTHASE_BETAPS00168 Tryptophan synthase beta chain pyridoxal-phosphate attachment site.TRPB_SALTY80-94  2B:80-94

(-) Exons   (0, 0)

(no "Exon" information available for 2CLK)

(-) 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:267
 aligned with TRPA_SALTY | P00929 from UniProtKB/Swiss-Prot  Length:268

    Alignment length:267
                                    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       
           TRPA_SALTY     1 MERYENLFAQLNDRREGAFVPFVTLGDPGIEQSLKIIDTLIDAGADALELGVPFSDPLADGPTIQNANLRAFAAGVTPAQCFEMLALIREKHPTIPIGLLMYANLVFNNGIDAFYARCEQVGVDSVLVADVPVEESAPFRQAALRHNIAPIFICPPNADDDLLRQVASYGRGYTYLLSRSGVTGAENRGALPLHHLIEKLKEYHAAPALQGFGISSPEQVSAAVRAGAAGAISGSAIVKIIEKNLASPKQMLAELRSFVSAMKAASR 267
               SCOP domains d2clka_ A: automated matches                                                                                                                                                                                                                                                SCOP domains
               CATH domains 2clkA00 A:1-267 Aldolase class I                                                                                                                                                                                                                                            CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhh...eeeeeee....hhhhhhhhhhhhhhh....eeee.........hhhhhhhhhhhhhh..hhhhhhhhhhhhhhhh....eeeeehhhhhhh.hhhhhhhhhhhhh..eeee...hhhhhhhhhhhhhhh..eee.ee....hhhhhhhhhhhh...eeee...............hhhhhhhhhhh....eeee....hhhhhhhhhhh...eeeehhhhhhhhhhh..hhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------TRP_SYNTHASE_A-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2clk A   1 MERYENLFAQLNDRREGAFVPFVTLGDPGIEQSLKIIDTLIDAGADALELGVPFSDPLADGPTIQNANLRAFAAGVTPAQCFEMLAIIREKHPTIPIGLLMYANLVFNNGIDAFYARCEQVGVDSVLVADVPVEESAPFRQAALRHNIAPIFICPPNADDDLLRQVASYGRGYTYLLSRSGVTGAENRGALPLHHLIEKLKEYHAAPALQGFGISSPEQVSAAVRAGAAGAISGSAIVKIIEKNLASPKQMLAELRSFVSAMKAASR 267
                                    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       

Chain B from PDB  Type:PROTEIN  Length:390
 aligned with TRPB_SALTY | P0A2K1 from UniProtKB/Swiss-Prot  Length:397

    Alignment length:390
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391
           TRPB_SALTY     2 TTLLNPYFGEFGGMYVPQILMPALNQLEEAFVSAQKDPEFQAQFADLLKNYAGRPTALTKCQNITAGTRTTLYLKREDLLHGGAHKTNQVLGQALLAKRMGKSEIIAETGAGQHGVASALASALLGLKCRIYMGAKDVERQSPNVFRMRLMGAEVIPVHSGSATLKDACNEALRDWSGSYETAHYMLGTAAGPHPYPTIVREFQRMIGEETKAQILDKEGRLPDAVIACVGGGSNAIGMFADFINDTSVGLIGVEPGGHGIETGEHGAPLKHGRVGIYFGMKAPMMQTADGQIEESYSISAGLDFPSVGPQHAYLNSIGRADYVSITDDEALEAFKTLCRHEGIIPALESSHALAHALKMMREQPEKEQLLVVNLSGRGDKDIFTVHDIL 391
               SCOP domains d2clkb_ B: automated matches                                                                                                                                                                                                                                                                                                                                                                           SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ......ee..eeeee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......eeehhhhhh...eeeeeee.hhh.....hhhhhhhhhhhhhhh...eeeeee..hhhhhhhhhhhhhhh.eeeeeeehhhhhhhhhhhhhhhhh..eeeee.....hhhhhhhhhhhhhhhhh..eee.........hhhhhhhhh.hhhhhhhhhhhhhhhh....eeeee...hhhhhhhhhhhh.....eeeeeeeee..hhhh...hhhhhheeeee.eeeeee..............hhhhh....hhhhhhhhhh...eeeeeehhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh....eeeeeee...hhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------TRP_SYNTHASE_BE--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2clk B   2 TTLLNPYFGEFGGMYVPQILMPALNQLEEAFVSAQKDPEFQAQFADLLKNYAGRPTALTKCQNITAGTRTTLYLKREDLLHGGAHKTNQVLGQALLAKRMGKSEIIAETGAGQHGVASALASALLGLKCRIYMGAKDVERQSPNVFRMRLMGAEVIPVHSGSATLKDACNEALRDWSGSYETAHYMLGTAAGPHPYPTIVREFQRMIGEETKAQILDKEGRLPDAVIACVGGGSNAIGMFADFINDTSVGLIGVEPGGHGIETGEHGAPLKHGRVGIYFGMKAPMMQTADGQIEESYSISAGLDFPSVGPQHAYLNSIGRADYVSITDDEALEAFKTLCRHEGIIPALESSHALAHALKMMREQPEKEQLLVVNLSGRGDKDIFTVHDIL 391
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → 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  (2, 2)

Asymmetric Unit

(-) CATH Domains  (1, 1)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (12, 21)

Asymmetric Unit(hide GO term definitions)
Chain A   (TRPA_SALTY | P00929)
molecular function
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    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:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0030170    pyridoxal phosphate binding    Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
    GO:0004834    tryptophan synthase activity    Catalysis of the reaction: L-serine + (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate = L-tryptophan + glyceraldehyde 3-phosphate + H2O.
biological process
    GO:0009073    aromatic amino acid family biosynthetic process    The chemical reactions and pathways resulting in the formation of aromatic amino acid family, amino acids with aromatic ring (phenylalanine, tyrosine, tryptophan).
    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:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
    GO:0000162    tryptophan biosynthetic process    The chemical reactions and pathways resulting in the formation of tryptophan, the chiral amino acid 2-amino-3-(1H-indol-3-yl)propanoic acid; tryptophan is synthesized from chorismate via anthranilate.
    GO:0006568    tryptophan metabolic process    The chemical reactions and pathways involving tryptophan, the chiral amino acid 2-amino-3-(1H-indol-3-yl)propanoic acid.
cellular component
    GO:0009507    chloroplast    A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Chain B   (TRPB_SALTY | P0A2K1)
molecular function
    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:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0030170    pyridoxal phosphate binding    Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
    GO:0004834    tryptophan synthase activity    Catalysis of the reaction: L-serine + (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate = L-tryptophan + glyceraldehyde 3-phosphate + H2O.
biological process
    GO:0009073    aromatic amino acid family biosynthetic process    The chemical reactions and pathways resulting in the formation of aromatic amino acid family, amino acids with aromatic ring (phenylalanine, tyrosine, tryptophan).
    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:0000162    tryptophan biosynthetic process    The chemical reactions and pathways resulting in the formation of tryptophan, the chiral amino acid 2-amino-3-(1H-indol-3-yl)propanoic acid; tryptophan is synthesized from chorismate via anthranilate.
    GO:0006568    tryptophan metabolic process    The chemical reactions and pathways involving tryptophan, the chiral amino acid 2-amino-3-(1H-indol-3-yl)propanoic acid.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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 Related Entries

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

UniProtKB/Swiss-Prot
        TRPA_SALTY | P009291a50 1a5a 1a5b 1a5s 1beu 1bks 1c29 1c8v 1c9d 1cw2 1cx9 1fuy 1k3u 1k7e 1k7f 1k7x 1k8x 1k8y 1k8z 1kfb 1kfc 1kfe 1kfj 1kfk 1qop 1qoq 1tjp 1ttp 1ttq 1ubs 1wbj 2cle 2clf 2clh 2cli 2cll 2clm 2clo 2j9x 2j9y 2j9z 2rh9 2rhg 2trs 2tsy 2tys 2wsy 3cep 3pr2 4hn4 4hpj 4hpx 4ht3 4kkx 4wx2 4xug 4y6g 4zqc 5bw6 5cgq
        TRPB_SALTY | P0A2K11a50 1a5a 1a5b 1a5s 1beu 1bks 1c29 1c8v 1c9d 1cw2 1cx9 1fuy 1k3u 1k7e 1k7f 1k7x 1k8x 1k8y 1k8z 1kfb 1kfc 1kfe 1kfj 1kfk 1qop 1qoq 1tjp 1ttp 1ttq 1ubs 1wbj 2cle 2clf 2clh 2cli 2cll 2clm 2clo 2j9x 2j9y 2j9z 2rh9 2rhg 2trs 2tsy 2tys 2wsy 3cep 3pr2 4hn4 4hpj 4hpx 4ht3 4kkx 4wx2 4xug 4y6g 4zqc 5bw6 5cgq

(-) Related Entries Specified in the PDB File

1a50 CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE COMPLEXED WITH 5-FLUOROINDOLE PROPANOL PHOSPHATE
1a5a CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHAD60N) TRYPTOPHAN SYNTHASE ALPHA2BETA2 COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49
1a5b CRYO-CRYSTALLOGRAPHY OF A TRUE SUBSTRATE, INDOLE-3-GLYCEROL PHOSPHATE, BOUND TO A MUTANT (ALPHA D60N) TRYPTOPHAN SYNTHASE ALPHA =2=BETA=2= COMPLEX REVEALS THE CORRECT ORIENTATION OF ACTIVE SITE ALPHA GLU 49
1a5s CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE COMPLEXED WITH 5-FLUOROINDOLE PROPANOL PHOSPHATE AND L-SER BOUND AS AMINO ACRYLATE TO THE BETA SITE
1bks TRYPTOPHAN SYNTHASE FROM SALMONELLA TYPHIMURIUM
1c29 CRYSTAL STRUCTURE OF THE COMPLEX OF BACTERIAL TRYPTOPHAN SYNTHASE WITH THE TRANSITION STATE ANALOGUE INHIBITOR 4-(2- HYDROXYPHENYLTHIO)-1-BUTENYLPHOSPHONIC ACID
1c8v CRYSTAL STRUCTURE OF THE COMPLEX OF BACTERIAL TRYPTOPHAN SYNTHASE WITH THE TRANSITION STATE ANALOGUE INHIBITOR 4-(2- HYDROXYPHENYLTHIO)-BUTYLPHOSPHONIC ACID
1c9d CRYSTAL STRUCTURE OF THE COMPLEX OF BACTERIAL TRYPTOPHAN SYNTHASE WITH THE TRANSITION STATE ANALOGUE INHIBITOR 4-(2- HYDROXY-4-FLUOROPHENYLTHIO)-BUTYLPHOSPHONIC ACID
1cw2 CRYSTAL STRUCTURE OF THE COMPLEX OF BACTERIAL TRYPTOPHAN SYNTHASE WITH THE TRANSITION STATE ANALOGUE INHIBITOR 4-(2- HYDROXYPHENYLSULFINYL)-BUTYLPHOSPHONIC ACID
1cx9 CRYSTAL STRUCTURE OF THE COMPLEX OF BACTERIAL TRYPTOPHAN SYNTHASE WITH THE TRANSITION STATE ANALOGUE INHIBITOR 4-(2- AMINOPHENYLTHIO)-BUTYLPHOSPHONIC ACID
1fuy CRYSTAL STRUCTURE OF BETAA169L/BETAC170W DOUBLE MUTANT OFTRYPTOPHAN SYNTHASE COMPLEXED WITH 5-FLUORO-INDOLE-PROPANOLPHOSPHATE
1geq ENTROPIC STABILIZATION OF THE TRYPTOPHAN SYNTHASE A-SUBUNITFROM A HYPERTHERMOPHILE, PYROCOCCUS FURIOSUS: X-RAYANALYSIS AND CALORIMETRY
1k3u CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASECOMPLEXED WITH N-[1H-INDOL-3-YL- ACETYL]ASPARTIC ACID
1k7e CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASECOMPLEXED WITH N-[1H-INDOL-3-YL- ACETYL]GLYCINE ACID
1k7f CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASECOMPLEXED WITH N-[1H-INDOL-3-YL- ACETYL]VALINE ACID
1k7x CRYSTAL STRUCTURE OF THE BETA-SER178PRO MUTANT OFTRYPTOPHAN SYNTHASE
1k8y CRYSTAL STRUCTURE OF THE TRYPTOPHAN SYNTHASE BETA-SER178PROMUTANT COMPLEXED WITH D,L- ALPHA-GLYCEROL-3-PHOSPHATE
1k8z CRYSTAL STRUCTURE OF THE TRYPTOPHAN SYNTHASE BETA-SER178PROMUTANT COMPLEXED WITH N-[1H- INDOL-3-YL-ACETYL]GLYCINE ACID
1kfj CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASECOMPLEXED WITH L-SERINE
1kfk CRYSTAL STRUCTURE OF TRYPTOPHAN SYNTHASE FROM SALMONELLATYPHIMURIUM
1qop CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE COMPLEXED WITH INDOLE PROPANOL PHOSPHATE
1qoq CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE COMPLEXED WITH INDOLE GLYCEROL PHOSPHATE
1rd5 CRYSTAL STRUCTURE OF TRYPTOPHAN SYNTHASE ALPHA CHAINHOMOLOG BX1: A MEMBER OF THE CHEMICAL PLANT DEFENSE SYSTEM
1tjp CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASECOMPLEXED WITH 1-[(2-HYDROXYLPHENYL) AMINO]3-GLYCEROLPHOSPHATE
1ttp TRYPTOPHAN SYNTHASE IN THE PRESENCE OF CESIUM, ROOM TEMPERATURE
1ttq TRYPTOPHAN SYNTHASE IN THE PRESENCE OF POTASSIUM AT ROOM TEMPERATURE
1ubs TRYPTOPHAN SYNTHASE WITH A MUTATION OF LYS 87 ->THR IN THE B SUBUNIT AND IN THE PRESENCE OF LIGAND L-SERINE
1ujp CRYSTAL STRUCTURE OF TRYPTOPHAN SYNTHASE A- SUBUNIT FROMTHERMUS THERMOPHILUS HB8
1v7y CRYSTAL STRUCTURE OF TRYPTOPHAN SYNTHASE ALPHA -SUBUNIT FROMESCHERICHIA COLI AT ROOM TEMPERATURE
1v8z X-RAY CRYSTAL STRUCTURE OF THE TRYPTOPHAN SYNTHASE B2SUBUNIT FROM HYPERTHERMOPHILE, PYROCOCCUS FURIOSUS
1wbj WILDTYPE TRYPTOPHAN SYNTHASE COMPLEXED WITH GLYCEROL PHOSPHATE
1wq5 CRYSTAL STRUCTURE OF TRYPTOPHAN SYNTHASE ALPHA -SUBUNIT FROMESCHERICHIA COLI
1wxj CRYSTAL STRUCTURE OF TRYPTOPHAN SYNTHASE A- SUBUNIT WITHINDOLE-3-PROPANOL PHOSPHATE FROM THERMUS THERMOPHILUS HB8
1xc4 CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE ALPHA-SUBUNITS FROM ESCHERICHIA COLI
1xcf CRYSTAL STRUCTURE OF P28L/Y173F TRYPTOPHAN SYNTHASE ALPHA-SUBUNITS FROM ESCHERICHIA COLI
2cle TRYPTOPHAN SYNTHASE IN COMPLEX WITH N-(4'- TRIFLUOROMETHOXYBENZOYL)-2-AMINO-1- ETHYLPHOSPHATE (F6) - LOWF6 COMPLEX
2clf TRYPTOPHAN SYNTHASE IN COMPLEX WITH N-(4'- TRIFLUOROMETHOXYBENZOYL)-2-AMINO-1- ETHYLPHOSPHATE (F6) - HIGHF6 COMPLEX
2clh TRYPTOPHAN SYNTHASE IN COMPLEX WITH ( NAPHTHALENE-2'-SULFONYL)-2-AMINO-1- ETHYLPHOSPHATE (F19)
2cli TRYPTOPHAN SYNTHASE IN COMPLEX WITH N-(4'- TRIFLUOROMETHOXYBENZENESULFONYL)-2-AMINO-1- ETHYLPHOSPHATE (F9)
2cll TRYPTOPHAN SYNTHASE (EXTERNAL ALDIMINE STATE) IN COMPLEX WITH N-(4'- TRIFLUOROMETHOXYBENZENESULFONYL)-2-AMINO-1- ETHYLPHOSPHATE (F9)
2clm TRYPTOPHAN SYNTHASE (EXTERNAL ALDIMINE STATE) IN COMPLEX WITH N-(4'-TRIFLUOROMETHOXYBENZOYL )-2-AMINO-1-ETHYLPHOSPHATE (F6)
2clo TRYPTOPHAN SYNTHASE (EXTERNAL ALDIMINE STATE) IN COMPLEX WITH (NAPHTHALENE-2'-SULFONYL)-2 -AMINO-1-ETHYLPHOSPHATE (F19)
2trs CRYSTAL STRUCTURES OF MUTANT (BETAK87T) TRYPTOPHAN SYNTHASE ALPHA=2 BETA=2= COMPLEX WITH LIGANDS BOUND TO THE ACTIVE SITES OF THE ALPHA AND BETA SUBUNITS REVEAL LIGAND-INDUCED CONFORMATIONAL CHANGES
2tsy CRYSTAL STRUCTURES OF MUTANT (BETAK87T) TRYPTOPHAN SYNTHASE ALPHA=2 BETA=2= COMPLEX WITH LIGANDS BOUND TO THE ACTIVE SITES OF THE ALPHA AND BETA SUBUNITS REVEAL LIGAND-INDUCED CONFORMATIONAL CHANGES
2tys CRYSTAL STRUCTURES OF MUTANT (BETAK87T) TRYPTOPHAN SYNTHASE ALPHA=2 BETA=2= COMPLEX WITH LIGANDS BOUND TO THE ACTIVE SITES OF THE ALPHA AND BETA SUBUNITS REVEAL LIGAND-INDUCED CONFORMATIONAL CHANGES
2wsy CRYSTAL STRUCTURE OF WILD-TYPE TRYPTOPHAN SYNTHASE