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(-) Description

Title :  KYNURENINE AMINOTRANSFERASE II INHIBITORS
 
Authors :  A. B. Dounay, M. Anderson, B. M. Bechle, B. M. Campbell, M. M. Claffey, A. Evdokimov, E. Edelweiss, K. R. Fonseca, X. Gan, S. Ghosh, M. M. Haywa W. Horner, J. Y. Kim, L. A. Mcallister, J. Pandit, V. Paradis, V. D. Pari M. R. Reese, S. B. Rong, M. A. Salafia, K. Schuyten, C. A. Strick, J. B. Tu J. Valentine, H. Wang, L. E. Zawadzke, P. R. Verhoest
Date :  28 Oct 11  (Deposition) - 01 Feb 12  (Release) - 01 Feb 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.22
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Biol. Unit 3:  A,B  (1x)
Keywords :  Kat Ii, Kynurenine Aminotransferase, Transferase-Transferase Inhibitor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. B. Dounay, M. Anderson, B. M. Bechle, B. M. Campbell, M. M. Claffey, A. Evdokimov, E. Edelweiss, K. R. Fonseca, X. Gan, S. Ghosh, M. M. Hayward, W. Horner, J. Y. Kim, L. A. Mcallister, J. Pandit, V. Paradis, V. D. Parikh, M. R. Reese, S. B. Rong, M. A. Salafia, K. Schuyten, C. A. Strick, J. B. Tuttle, J. Valentine, H. Wang, L. E. Zawadzke, P. R. Verhoest
Discovery Of Brain-Penetrant, Irreversible Kynurenine Aminotransferase Ii Inhibitors For Schizophrenia
Acs Med. Chem. Lett. 2012
PubMed: search  |  Reference-DOI: 10.1021/ML200204M

(-) Compounds

Molecule 1 - KYNURENINE/ALPHA-AMINOADIPATE AMINOTRANSFERASE, MITOCHONDRIAL
    ChainsA, B
    EC Number2.6.1.39, 2.6.1.7
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    GeneAADAT, KAT2
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    Synonym2-AMINOADIPATE AMINOTRANSFERASE, 2-AMINOADIPATE TRANSAMINASE, ALPHA-AMINOADIPATE AMINOTRANSFERASE, AADAT, KAT/AADAT, KYNURENINE AMINOTRANSFERASE II, KYNURENINE--OXOGLUTARATE AMINOTRANSFERASE II, KYNURENINE--OXOGLUTARATE TRANSAMINASE II

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)A 
Biological Unit 2 (1x) B
Biological Unit 3 (1x)AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 4)

Asymmetric Unit (2, 4)
No.NameCountTypeFull Name
109M2Ligand/Ion(5-HYDROXY-4-{[(1-HYDROXY-2-OXO-1,2-DIHYDROQUINOLIN-3-YL)AMINO]METHYL}-6-METHYLPYRIDIN-3-YL)METHYLDIHYDROGEN PHOSPHATE
2CL2Ligand/IonCHLORIDE ION
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
109M1Ligand/Ion(5-HYDROXY-4-{[(1-HYDROXY-2-OXO-1,2-DIHYDROQUINOLIN-3-YL)AMINO]METHYL}-6-METHYLPYRIDIN-3-YL)METHYLDIHYDROGEN PHOSPHATE
2CL-1Ligand/IonCHLORIDE ION
Biological Unit 2 (1, 1)
No.NameCountTypeFull Name
109M1Ligand/Ion(5-HYDROXY-4-{[(1-HYDROXY-2-OXO-1,2-DIHYDROQUINOLIN-3-YL)AMINO]METHYL}-6-METHYLPYRIDIN-3-YL)METHYLDIHYDROGEN PHOSPHATE
2CL-1Ligand/IonCHLORIDE ION
Biological Unit 3 (1, 2)
No.NameCountTypeFull Name
109M2Ligand/Ion(5-HYDROXY-4-{[(1-HYDROXY-2-OXO-1,2-DIHYDROQUINOLIN-3-YL)AMINO]METHYL}-6-METHYLPYRIDIN-3-YL)METHYLDIHYDROGEN PHOSPHATE
2CL-1Ligand/IonCHLORIDE ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY A:116 , SER A:117 , GLN A:118 , TYR A:142 , ASN A:202 , ASP A:230 , PRO A:232 , TYR A:233 , SER A:260 , SER A:262 , LYS A:263 , ARG A:270 , PHE A:355 , ARG A:399 , TYR B:74BINDING SITE FOR RESIDUE 09M A 440
2AC2SOFTWAREGLY A:39 , TYR A:74 , GLY B:116 , SER B:117 , GLN B:118 , TYR B:142 , ASN B:202 , ASP B:230 , PRO B:232 , TYR B:233 , SER B:260 , SER B:262 , LYS B:263 , ARG B:270 , ARG B:399BINDING SITE FOR RESIDUE 09M B 440
3AC3SOFTWARETRP A:178 , ASN A:189BINDING SITE FOR RESIDUE CL A 441
4AC4SOFTWARETRP B:178 , ASN B:189BINDING SITE FOR RESIDUE CL B 441

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3UE8)

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Glu A:139 -Pro A:140
2Asn A:202 -Pro A:203
3Glu B:139 -Pro B:140
4Asn B:202 -Pro B:203

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 2)

Asymmetric Unit (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_061005V243IAADAT_HUMANPolymorphism56350236A/BV243I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_061005V243IAADAT_HUMANPolymorphism56350236AV243I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_061005V243IAADAT_HUMANPolymorphism56350236BV243I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 3 (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_061005V243IAADAT_HUMANPolymorphism56350236A/BV243I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3UE8)

(-) Exons   (13, 26)

Asymmetric Unit (13, 26)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.3cENST000003531873cENSE00001220119chr4:171011372-17101129578AADAT_HUMAN-00--
1.4bENST000003531874bENSE00001139506chr4:171010887-171010775113AADAT_HUMAN1-23232A:1-16
B:1-17
16
17
1.6aENST000003531876aENSE00000970552chr4:171009715-171009547169AADAT_HUMAN23-79572A:34-79
B:29-79
46
51
1.7ENST000003531877ENSE00000741009chr4:171008399-171008267133AADAT_HUMAN79-123452A:79-123
B:79-123
45
45
1.8ENST000003531878ENSE00000970553chr4:170999734-17099966075AADAT_HUMAN124-148252A:124-148
B:124-148
25
25
1.9cENST000003531879cENSE00000970554chr4:170994496-170994287210AADAT_HUMAN149-218702A:149-218
B:149-218
70
70
1.10bENST0000035318710bENSE00000970555chr4:170991803-17099173866AADAT_HUMAN219-240222A:219-240
B:219-240
22
22
1.11ENST0000035318711ENSE00000970556chr4:170990381-17099029983AADAT_HUMAN241-268282A:241-268
B:241-268
28
28
1.12ENST0000035318712ENSE00000970557chr4:170989838-17098974297AADAT_HUMAN268-300332A:268-300
B:268-300
33
33
1.13ENST0000035318713ENSE00000970558chr4:170988539-17098847862AADAT_HUMAN301-321212A:301-321
B:301-321
21
21
1.14ENST0000035318714ENSE00000970559chr4:170987629-17098756565AADAT_HUMAN321-343232A:321-343
B:321-343
23
23
1.15ENST0000035318715ENSE00001151624chr4:170985976-170985870107AADAT_HUMAN343-378362A:343-378
B:343-378
36
36
1.16ENST0000035318716ENSE00001151616chr4:170983144-170983043102AADAT_HUMAN379-412342A:379-412
B:379-412
34
34
1.17aENST0000035318717aENSE00002069309chr4:170982120-170981380741AADAT_HUMAN413-425132A:413-425
B:413-425
13
13

(-) 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:410
 aligned with AADAT_HUMAN | Q8N5Z0 from UniProtKB/Swiss-Prot  Length:425

    Alignment length:427
                                                                                                                                                                                                                                                                                                                                                                                                                                                                  425  
                                    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       310       320       330       340       350       360       370       380       390       400       410       420    |  
          AADAT_HUMAN     1 MNYARFITAASAARNPSPIRTMTDILSRGPKSMISLAGGLPNPNMFPFKTAVITVENGKTIQFGEEMMKRALQYSPSAGIPELLSWLKQLQIKLHNPPTIHYPPSQGQMDLCVTSGSQQGLCKVFEMIINPGDNVLLDEPAYSGTLQSLHPLGCNIINVASDESGIVPDSLRDILSRWKPEDAKNPQKNTPKFLYTVPNGNNPTGNSLTSERKKEIYELARKYDFLIIEDDPYYFLQFNKFRVPTFLSMDVDGRVIRADSFSKIISSGLRIGFLTGPKPLIERVILHIQVSTLHPSTFNQLMISQLLHEWGEEGFMAHVDRVIDFYSNQKDAILAAADKWLTGLAEWHVPAAGMFLWIKVKGINDVKELIEEKAVKMGVLMLPGNAFYVDSSAPSPYLRASFSSASPEQMDVAFQVLAQLIKESL--   -
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhh...-----------------........hhhhh.eeeeeeee....eeeehhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhhh.eeeeee.hhhhhhhhhhhhhh....eeee....hhhhhhhhh....eeee........hhhhhhhhhhhhhhhhhh........eeee............hhhhhhhhhhhhhhh..eeeee........................eeeeee...........eeeeeehhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eee.......eeeeee......hhhhhh.hhhh.ee.ee.hhhh........eeeee....hhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------I---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.4b  PDB: A:1-16 -------------------------------------------------------Exon 1.7  PDB: A:79-123 UniProt: 79-123      Exon 1.8  PDB: A:124-148 Exon 1.9c  PDB: A:149-218 UniProt: 149-218                            Exon 1.10b            Exon 1.11  PDB: A:241-268   --------------------------------Exon 1.13            ---------------------Exon 1.15  PDB: A:343-378           Exon 1.16  PDB: A:379-412         Exon 1.17a   -- Transcript 1 (1)
           Transcript 1 (2) ----------------------Exon 1.6a  PDB: A:34-79 UniProt: 23-79 [INCOMPLETE]      --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Exon 1.12  PDB: A:268-300        --------------------Exon 1.14              ------------------------------------------------------------------------------------ Transcript 1 (2)
                 3ue8 A   1 MNYARFITAASAARNP-----------------ISLAGGLPNPNMFPFKTAVITVENGKTIQFGEEMMKRALQYSPSAGIPELLSWLKQLQIKLHNPPTIHYPPSQGQMDLCVTSGSQQGLCKVFEMIINPGDNVLLDEPAYSGTLQSLHPLGCNIINVASDESGIVPDSLRDILSRWKPEDAKNPQKNTPKFLYTVPNGNNPTGNSLTSERKKEIYELARKYDFLIIEDDPYYFLQFNKFRVPTFLSMDVDGRVIRADSFSKIISSGLRIGFLTGPKPLIERVILHIQVSTLHPSTFNQLMISQLLHEWGEEGFMAHVDRVIDFYSNQKDAILAAADKWLTGLAEWHVPAAGMFLWIKVKGINDVKELIEEKAVKMGVLMLPGNAFYVDSSAPSPYLRASFSSASPEQMDVAFQVLAQLIKESLLV 427
                                    10     |   -         -   |    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       310       320       330       340       350       360       370       380       390       400       410       420       
                                          16                34                                                                                                                                                                                                                                                                                                                                                                                                         

Chain B from PDB  Type:PROTEIN  Length:414
 aligned with AADAT_HUMAN | Q8N5Z0 from UniProtKB/Swiss-Prot  Length:425

    Alignment length:425
                                    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       310       320       330       340       350       360       370       380       390       400       410       420     
          AADAT_HUMAN     1 MNYARFITAASAARNPSPIRTMTDILSRGPKSMISLAGGLPNPNMFPFKTAVITVENGKTIQFGEEMMKRALQYSPSAGIPELLSWLKQLQIKLHNPPTIHYPPSQGQMDLCVTSGSQQGLCKVFEMIINPGDNVLLDEPAYSGTLQSLHPLGCNIINVASDESGIVPDSLRDILSRWKPEDAKNPQKNTPKFLYTVPNGNNPTGNSLTSERKKEIYELARKYDFLIIEDDPYYFLQFNKFRVPTFLSMDVDGRVIRADSFSKIISSGLRIGFLTGPKPLIERVILHIQVSTLHPSTFNQLMISQLLHEWGEEGFMAHVDRVIDFYSNQKDAILAAADKWLTGLAEWHVPAAGMFLWIKVKGINDVKELIEEKAVKMGVLMLPGNAFYVDSSAPSPYLRASFSSASPEQMDVAFQVLAQLIKESL 425
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhh...-----------.....ee......hhhhh.eeeeeeee..eeeeeehhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhh......eeeeeehhhhhhhhhhhhhhh....eeee....hhhhhhhhh....eeee..ee..eehhhhhhhhhh................eeee............hhhhhhhhhhhhhhh..eeeee..............hhhhhh....eeeeee...........eeeeeehhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eee.......eeeeee.....hhhhhhh.hhhhh....hhhhhh........eeeee....hhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------I-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.4b  PDB: B:1-17 -------------------------------------------------------Exon 1.7  PDB: B:79-123 UniProt: 79-123      Exon 1.8  PDB: B:124-148 Exon 1.9c  PDB: B:149-218 UniProt: 149-218                            Exon 1.10b            Exon 1.11  PDB: B:241-268   --------------------------------Exon 1.13            ---------------------Exon 1.15  PDB: B:343-378           Exon 1.16  PDB: B:379-412         Exon 1.17a    Transcript 1 (1)
           Transcript 1 (2) ----------------------Exon 1.6a  PDB: B:29-79 UniProt: 23-79 [INCOMPLETE]      --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Exon 1.12  PDB: B:268-300        --------------------Exon 1.14              ---------------------------------------------------------------------------------- Transcript 1 (2)
                 3ue8 B   1 MNYARFITAASAARNPS-----------GPKSMISLAGGLPNPNMFPFKTAVITVENGKTIQFGEEMMKRALQYSPSAGIPELLSWLKQLQIKLHNPPTIHYPPSQGQMDLCVTSGSQQGLCKVFEMIINPGDNVLLDEPAYSGTLQSLHPLGCNIINVASDESGIVPDSLRDILSRWKPEDAKNPQKNTPKFLYTVPNGNNPTGNSLTSERKKEIYELARKYDFLIIEDDPYYFLQFNKFRVPTFLSMDVDGRVIRADSFSKIISSGLRIGFLTGPKPLIERVILHIQVSTLHPSTFNQLMISQLLHEWGEEGFMAHVDRVIDFYSNQKDAILAAADKWLTGLAEWHVPAAGMFLWIKVKGINDVKELIEEKAVKMGVLMLPGNAFYVDSSAPSPYLRASFSSASPEQMDVAFQVLAQLIKESL 425
                                    10      |  -        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       310       320       330       340       350       360       370       380       390       400       410       420     
                                           17          29                                                                                                                                                                                                                                                                                                                                                                                                            

   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  (0, 0)

(no "SCOP Domain" information available for 3UE8)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3UE8)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3UE8)

(-) Gene Ontology  (18, 18)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (AADAT_HUMAN | Q8N5Z0)
molecular function
    GO:0047536    2-aminoadipate transaminase activity    Catalysis of the reaction: 2-oxoglutarate + L-2-aminoadipate = 2-oxoadipate + L-glutamate.
    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:0016212    kynurenine-oxoglutarate transaminase activity    Catalysis of the reaction: L-kynurenine + 2-oxoglutarate = 4-(2-aminophenyl)-2,4-dioxobutanoate + L-glutamate.
    GO:0042803    protein homodimerization activity    Interacting selectively and non-covalently with an identical protein to form a homodimer.
    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:0008483    transaminase activity    Catalysis of the transfer of an amino group to an acceptor, usually a 2-oxo acid.
    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:0006103    2-oxoglutarate metabolic process    The chemical reactions and pathways involving oxoglutarate, the dianion of 2-oxoglutaric acid. It is a key constituent of the TCA cycle and a key intermediate in amino-acid metabolism.
    GO:0097052    L-kynurenine metabolic process    The chemical reactions and pathways involving L-kynurenine, the L-enantiomer of the amino acid kynurenine (3-(2-aminobenzoyl)-alanine).
    GO:0033512    L-lysine catabolic process to acetyl-CoA via saccharopine    The chemical reactions and pathways resulting in the breakdown of L-lysine into other compounds, including acetyl-CoA, via the intermediate saccharopine.
    GO:0009058    biosynthetic process    The chemical reactions and pathways resulting in the formation of substances; typically the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.
    GO:0006536    glutamate metabolic process    The chemical reactions and pathways involving glutamate, the anion of 2-aminopentanedioic acid.
    GO:0070189    kynurenine metabolic process    The chemical reactions and pathways involving kynurenine, the amino acid 3-(2-aminobenzoyl)-alanine.
    GO:0006554    lysine catabolic process    The chemical reactions and pathways resulting in the breakdown of lysine, 2,6-diaminohexanoic acid.
    GO:0006569    tryptophan catabolic process    The chemical reactions and pathways resulting in the breakdown of tryptophan, the chiral amino acid 2-amino-3-(1H-indol-3-yl)propanoic acid.
    GO:0019441    tryptophan catabolic process to kynurenine    The chemical reactions and pathways resulting in the breakdown of tryptophan into other compounds, including kynurenine.
cellular component
    GO:0005759    mitochondrial matrix    The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.

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