Show PDB file:   
         Plain Text   HTML   (compressed file size)
QuickSearch:   
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)Asym./Biol. Unit
(-)Asym./Biol. Unit - sites
collapse expand < >
Image Asym./Biol. Unit
Asym./Biol. Unit  (Jmol Viewer)
Image Asym./Biol. Unit - sites
Asym./Biol. Unit - sites  (Jmol Viewer)

(-) Description

Title :  CRYSTAL STRUCTURE OF TRANSKETOLASE FROM ESCHERICHIA COLI IN NONCOVALENT COMPLEX WITH ACCEPTOR ALDOSE RIBOSE 5-PHOSPHATE
 
Authors :  C. Parthier, P. Asztalos, G. Wille, K Tittmann
Date :  04 Sep 07  (Deposition) - 06 Nov 07  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Thiamin Catalysis, Sugar Phosphates, Acceptor, Near Attack Conformation, Cyclic, Acyclic, Ribose-5-Phospate, Pyranose, Metal- Binding, Thiamine Pyrophosphate, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. Asztalos, C. Parthier, R. Golbik, M. Kleinschmidt, G. Hubner, M. S. Weiss, R. Friedemann, G. Wille, K. Tittmann
Strain And Near Attack Conformers In Enzymic Thiamin Catalysis: X-Ray Crystallographic Snapshots Of Bacterial Transketolase In Covalent Complex With Donor Ketoses Xylulose 5-Phosphate And Fructose 6-Phosphate, And In Noncovalent Complex With Acceptor Aldose Ribose 5-Phosphate
Biochemistry V. 46 12037 2007
PubMed-ID: 17914867  |  Reference-DOI: 10.1021/BI700844M

(-) Compounds

Molecule 1 - TRANSKETOLASE 1
    Chains: A, B
    EC Number: 2.2.1.1
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PGSJ427
    Expression System Strain: JM109
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Gene: TKTA, TKT
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Synonym: TK 1

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (5, 23)

Asymmetric/Biological Unit (5, 23)
No.NameCountTypeFull Name
1CA2Ligand/IonCALCIUM ION
2EDO16Ligand/Ion1,2-ETHANEDIOL
3R5P1Ligand/IonRIBOSE-5-PHOSPHATE
4RP52Ligand/Ion5-O-PHOSPHONO-BETA-D-RIBOFURANOSE
5TPP2Ligand/IonTHIAMINE DIPHOSPHATE

(-) Sites  (23, 23)

Asymmetric Unit (23, 23)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREARG A:358 , SER A:385 , PHE A:434 , HIS A:461 , ASP A:469 , HIS A:473 , ARG A:520 , HOH A:918 , HOH A:1371 , HOH A:1372 , HOH A:1377 , HIS B:26 , ILE B:189 , HIS B:261 , TPP B:672 , HOH B:1192 , HOH B:1196BINDING SITE FOR RESIDUE R5P A 670
02AC2SOFTWAREASP A:155 , ASN A:185 , ILE A:187 , TPP A:672 , HOH A:706BINDING SITE FOR RESIDUE CA A 2000
03AC3SOFTWAREASP B:155 , ASN B:185 , ILE B:187 , TPP B:672 , HOH B:1032BINDING SITE FOR RESIDUE CA B 2000
04AC4SOFTWAREALA A:29 , HIS A:66 , GLY A:114 , LEU A:116 , ASP A:155 , GLY A:156 , GLU A:160 , ASN A:185 , ILE A:187 , ILE A:189 , ILE A:247 , HIS A:261 , HOH A:726 , HOH A:752 , HOH A:764 , HOH A:870 , CA A:2000 , ASP B:381 , GLU B:411 , PHE B:437 , TYR B:440 , HIS B:473BINDING SITE FOR RESIDUE TPP A 672
05AC5SOFTWAREGLU A:275 , ARG A:509 , ASP A:511 , LYS A:591 , HOH A:1284BINDING SITE FOR RESIDUE EDO A 673
06AC6SOFTWAREALA A:271 , TYR A:505 , GLU A:508 , ARG A:509 , HOH A:960 , HOH A:1154BINDING SITE FOR RESIDUE EDO A 674
07AC7SOFTWAREPRO A:52 , GLY A:108 , VAL A:109 , HOH A:899BINDING SITE FOR RESIDUE EDO A 675
08AC8SOFTWAREARG A:274 , GLU A:275 , TRP A:279 , GLN A:592 , HOH A:856 , HOH A:1283BINDING SITE FOR RESIDUE EDO A 676
09AC9SOFTWAREGLU A:6 , GLY A:278 , TRP A:279 , LYS A:280 , TYR A:281 , HOH A:861 , HOH A:1347BINDING SITE FOR RESIDUE EDO A 677
10BC1SOFTWARELYS A:131 , THR A:172 , LYS A:174 , ASN A:397 , HOH A:987 , HOH A:1077 , HOH A:1103BINDING SITE FOR RESIDUE EDO A 678
11BC2SOFTWAREPHE A:375 , TRP A:390 , SER A:393 , ASN A:403 , TYR A:404 , TYR A:430BINDING SITE FOR RESIDUE EDO A 679
12BC3SOFTWARESER A:559 , GLU A:560 , PHE A:645 , PHE A:650 , HOH A:828 , HOH A:1257BINDING SITE FOR RESIDUE EDO A 680
13BC4SOFTWAREARG A:358 , SER A:385 , HIS A:461 , ASP A:469 , ARG A:520 , HOH A:1371 , HOH A:1372 , HOH A:1377 , HIS B:26 , ILE B:189 , HIS B:261 , GLY B:262 , HOH B:1196 , HOH B:1515 , HOH B:1719BINDING SITE FOR RESIDUE RP5 B 671
14BC5SOFTWAREASP A:381 , GLU A:411 , PHE A:437 , TYR A:440 , HIS A:473 , R5P A:670 , ALA B:29 , HIS B:66 , GLY B:114 , LEU B:116 , GLY B:154 , ASP B:155 , GLY B:156 , GLU B:160 , ASN B:185 , ILE B:187 , ILE B:189 , ILE B:247 , HIS B:261 , HOH B:1066 , HOH B:1093 , HOH B:1123 , HOH B:1192 , CA B:2000BINDING SITE FOR RESIDUE TPP B 672
15BC6SOFTWAREARG A:483 , HOH A:894 , ILE B:615 , ASP B:617 , THR B:633 , HOH B:1558BINDING SITE FOR RESIDUE EDO B 673
16BC7SOFTWAREPRO B:52 , GLY B:108 , VAL B:109 , HOH B:1102BINDING SITE FOR RESIDUE EDO B 674
17BC8SOFTWAREILE B:345 , VAL B:501 , LEU B:533 , ALA B:534 , ILE B:536 , ALA B:537 , HOH B:1225 , HOH B:1480 , HOH B:1598BINDING SITE FOR RESIDUE EDO B 675
18BC9SOFTWARESER A:305 , ASN A:308 , GLU A:309 , HOH A:1193 , LYS B:354 , HOH B:1486BINDING SITE FOR RESIDUE EDO B 676
19CC1SOFTWARESER B:559 , GLU B:560 , PHE B:645 , PHE B:650 , HOH B:1124BINDING SITE FOR RESIDUE EDO B 677
20CC2SOFTWAREGLY A:392 , LYS A:394 , ARG B:4 , ARG B:42 , HOH B:1549 , HOH B:1697 , HOH B:1767BINDING SITE FOR RESIDUE EDO B 678
21CC3SOFTWAREPHE A:635 , HOH A:946 , ALA B:449 , LEU B:450 , LYS B:452 , HOH B:1726BINDING SITE FOR RESIDUE EDO B 679
22CC4SOFTWAREGLY B:186 , HIS B:192 , VAL B:193 , GLU B:194 , HOH B:1292 , HOH B:1432 , HOH B:1775BINDING SITE FOR RESIDUE EDO B 680
23CC5SOFTWAREHIS A:26 , ILE A:189 , HIS A:261 , GLY A:262 , ARG B:358 , SER B:385 , HIS B:461 , ASP B:469 , ARG B:520 , HOH B:1174 , HOH B:1383 , HOH B:1571 , HOH B:1647 , HOH B:1782BINDING SITE FOR RESIDUE RP5 B 681

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2R5N)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2R5N)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2R5N)

(-) PROSITE Motifs  (2, 4)

Asymmetric/Biological Unit (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1TRANSKETOLASE_1PS00801 Transketolase signature 1.TKT1_ECOLI12-32
 		  2A:12-32
B:12-32
2TRANSKETOLASE_2PS00802 Transketolase signature 2.TKT1_ECOLI467-483
 		  2A:467-483
B:467-483

(-) Exons   (0, 0)

(no "Exon" information available for 2R5N)

(-) Sequences/Alignments

Asymmetric/Biological 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:666
 aligned with TKT1_ECOLI | P27302 from UniProtKB/Swiss-Prot  Length:663

    Alignment length:666
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               663    
                                    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       401       411       421       431       441       451       461       471       481       491       501       511       521       531       541       551       561       571       581       591       601       611       621       631       641       651       661 |    
           TKT1_ECOLI     2 SSRKELANAIRALSMDAVQKAKSGHPGAPMGMADIAEVLWRDFLKHNPQNPSWADRDRFVLSNGHGSMLIYSLLHLTGYDLPMEELKNFRQLHSKTPGHPEVGYTAGVETTTGPLGQGIANAVGMAIAEKTLAAQFNRPGHDIVDHYTYAFMGDGCMMEGISHEVCSLAGTLKLGKLIAFYDDNGISIDGHVEGWFTDDTAMRFEAYGWHVIRDIDGHDAASIKRAVEEARAVTDKPSLLMCKTIIGFGSPNKAGTHDSHGAPLGDAEIALTREQLGWKYAPFEIPSEIYAQWDAKEAGQAKESAWNEKFAAYAKAYPQEAAEFTRRMKGEMPSDFDAKAKEFIAKLQANPAKIASRKASQNAIEAFGPLLPEFLGGSADLAPSNLTLWSGSKAINEDAAGNYIHYGVREFGMTAIANGISLHGGFLPYTSTFLMFVEYARNAVRMAALMKQRQVMVYTHDSIGLGEDGPTHQPVEQVASLRVTPNMSTWRPCDQVESAVAWKYGVERQDGPTALILSRQNLAQQERTEEQLANIARGGYVLKDCAGQPELIFIATGSEVELAVAAYEKLTAEGVKARVVSMPSTDAFDKQDAAYRESVLPKAVTARVAVEAGIADYWYKYVGLNGAIVGMTTFGESAPAELLFEEFGFTVDNVVAKAKELL----   -
               SCOP domains d2r5na2 A:2-332 Transketolase (TK), PP module                                                                                                                                                                                                                                                                                              d2r5na1 A:333-527 automated matches                                                                                                                                                                d2r5na3 A:528-667 Transketolase (TK), C-domain                                                                                               SCOP domains
               CATH domains 2r5nA01 A:2-326  [code=3.40.50.970, no name defined]                                                                                                                                                                                                                                                                                 2r5nA02 A:327-537  [code=3.40.50.970, no name defined]                                                                                                                                                             2r5nA03 A:538-667  [code=3.40.50.920, no name defined]                                                                             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh..............eeee.hhhhhhhhhhhhhhhh...hhhhhhh...........................hhhhhhhhhhhhhhhhhhhhhh..........eeeeehhhhhhhhhhhhhhhhhhhh....eeeeeee..ee..ee.hhh...hhhhhhhhh..eeeeeee..hhhhhhhhhhhhhhh....eeeeee............hhhhh....hhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhh...eehhhhhhhhhhhhh.....eeeee..hhhhhh................eee...hhhhhhhhhhhhhhhh..eeeeeee.hhhhhhhhhhhhhhhh....eeeee..hhhhh.........hhhhhhhh....eee...hhhhhhhhhhhhhhh....eeee....ee.....hhhhhhhhhhh.eeee.......eeeee...hhhhhhhhhhhhhhh...eeeee..hhhhhhhhhhhhhhhhh......eeeeeeee...hhhhhh...eeeee.......hhhhhhhhh..hhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ----------TRANSKETOLASE_1      --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TRANSKETOLASE_2  ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2r5n A   2 SSRKELANAIRALSMDAVQKAKSGHPGAPMGMADIAEVLWRDFLKHNPQNPSWADRDRFVLSNGHGSMLIYSLLHLTGYDLPMEELKNFRQLHSKTPGHPEVGYTAGVETTTGPLGQGIANAVGMAIAEKTLAAQFNRPGHDIVDHYTYAFMGDGCMMEGISHEVCSLAGTLKLGKLIAFYDDNGISIDGHVEGWFTDDTAMRFEAYGWHVIRDIDGHDAASIKRAVEEARAVTDKPSLLMCKTIIGFGSPNKAGTHDSHGAPLGDAEIALTREQLGWKYAPFEIPSEIYAQWDAKEAGQAKESAWNEKFAAYAKAYPQEAAEFTRRMKGEMPSDFDAKAKEFIAKLQANPAKIASRKASQNAIEAFGPLLPEFLGGSADLAPSNLTLWSGSKAINEDAAGNYIHYGVREFGMTAIANGISLHGGFLPYTSTFLMFVEYARNAVRMAALMKQRQVMVYTHDSIGLGEDGPTHQPVEQVASLRVTPNMSTWRPCDQVESAVAWKYGVERQDGPTALILSRQNLAQQERTEEQLANIARGGYVLKDCAGQPELIFIATGSEVELAVAAYEKLTAEGVKARVVSMPSTDAFDKQDAAYRESVLPKAVTARVAVEAGIADYWYKYVGLNGAIVGMTTFGESAPAELLFEEFGFTVDNVVAKAKELLHHHH 667
                                    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       401       411       421       431       441       451       461       471       481       491       501       511       521       531       541       551       561       571       581       591       601       611       621       631       641       651       661      


Chain B from PDB  Type:PROTEIN  Length:663
 aligned with TKT1_ECOLI | P27302 from UniProtKB/Swiss-Prot  Length:663

    Alignment length:663
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               663 
                                    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       401       411       421       431       441       451       461       471       481       491       501       511       521       531       541       551       561       571       581       591       601       611       621       631       641       651       661 | 
           TKT1_ECOLI     2 SSRKELANAIRALSMDAVQKAKSGHPGAPMGMADIAEVLWRDFLKHNPQNPSWADRDRFVLSNGHGSMLIYSLLHLTGYDLPMEELKNFRQLHSKTPGHPEVGYTAGVETTTGPLGQGIANAVGMAIAEKTLAAQFNRPGHDIVDHYTYAFMGDGCMMEGISHEVCSLAGTLKLGKLIAFYDDNGISIDGHVEGWFTDDTAMRFEAYGWHVIRDIDGHDAASIKRAVEEARAVTDKPSLLMCKTIIGFGSPNKAGTHDSHGAPLGDAEIALTREQLGWKYAPFEIPSEIYAQWDAKEAGQAKESAWNEKFAAYAKAYPQEAAEFTRRMKGEMPSDFDAKAKEFIAKLQANPAKIASRKASQNAIEAFGPLLPEFLGGSADLAPSNLTLWSGSKAINEDAAGNYIHYGVREFGMTAIANGISLHGGFLPYTSTFLMFVEYARNAVRMAALMKQRQVMVYTHDSIGLGEDGPTHQPVEQVASLRVTPNMSTWRPCDQVESAVAWKYGVERQDGPTALILSRQNLAQQERTEEQLANIARGGYVLKDCAGQPELIFIATGSEVELAVAAYEKLTAEGVKARVVSMPSTDAFDKQDAAYRESVLPKAVTARVAVEAGIADYWYKYVGLNGAIVGMTTFGESAPAELLFEEFGFTVDNVVAKAKELL-   -
               SCOP domains d2r5nb2 B:2-332 Transketolase (TK), PP module                                                                                                                                                                                                                                                                                              d2r5nb1 B:333-527 automated matches                                                                                                                                                                d2r5nb3 B:528-664 Transketolase (TK), C-domain                                                                                            SCOP domains
               CATH domains 2r5nB01 B:2-326  [code=3.40.50.970, no name defined]                                                                                                                                                                                                                                                                                 2r5nB02 B:327-537  [code=3.40.50.970, no name defined]                                                                                                                                                             2r5nB03 B:538-664  [code=3.40.50.920, no name defined]                                                                          CATH domains
           Pfam domains (1) -Transketolase_N-2r5nB03 B:3-334                                                                                                                                                                                                                                                                                                             ------------------Transket_pyr-2r5nB01 B:353-526                                                                                                                                                -------------Transketolase_C-2r5nB05 B:540-655                                                                                   --------- Pfam domains (1)
           Pfam domains (2) -Transketolase_N-2r5nB04 B:3-334                                                                                                                                                                                                                                                                                                             ------------------Transket_pyr-2r5nB02 B:353-526                                                                                                                                                -------------Transketolase_C-2r5nB06 B:540-655                                                                                   --------- Pfam domains (2)
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh..............eeee.hhhhhhhhhhhhhhhh...hhhhhh............................hhhhhhhhhhhhhhhhhhhhhh..........eeeeehhhhhhhhhhhhhhhhhhhh....eeeeeee..ee..ee.hhh...hhhhhhhhh..eeeeeee..hhhhhhhhhhhhhhh....eeeeee............hhhhh....hhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhh..eeeee..hhhhhh................eee...hhhhhhhhhhhhhhhh..eeeeeee.hhhhhhhhhhhhhhhh....eeeee..hhhhh.........hhhhhhhh....eee...hhhhhhhhhhhhhhh....eeee....ee.....hhhhhhhhhhh.eeee.......eeeee...hhhhhhhhhhhhhhhh..eeeee..hhhhhhh.hhhhhhhhh......eeeeeeee...hhhhhh...eeeee.......hhhhhhhhh..hhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------TRANSKETOLASE_1      --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------TRANSKETOLASE_2  ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2r5n B   2 SSRKELANAIRALSMDAVQKAKSGHPGAPMGMADIAEVLWRDFLKHNPQNPSWADRDRFVLSNGHGSMLIYSLLHLTGYDLPMEELKNFRQLHSKTPGHPEVGYTAGVETTTGPLGQGIANAVGMAIAEKTLAAQFNRPGHDIVDHYTYAFMGDGCMMEGISHEVCSLAGTLKLGKLIAFYDDNGISIDGHVEGWFTDDTAMRFEAYGWHVIRDIDGHDAASIKRAVEEARAVTDKPSLLMCKTIIGFGSPNKAGTHDSHGAPLGDAEIALTREQLGWKYAPFEIPSEIYAQWDAKEAGQAKESAWNEKFAAYAKAYPQEAAEFTRRMKGEMPSDFDAKAKEFIAKLQANPAKIASRKASQNAIEAFGPLLPEFLGGSADLAPSNLTLWSGSKAINEDAAGNYIHYGVREFGMTAIANGISLHGGFLPYTSTFLMFVEYARNAVRMAALMKQRQVMVYTHDSIGLGEDGPTHQPVEQVASLRVTPNMSTWRPCDQVESAVAWKYGVERQDGPTALILSRQNLAQQERTEEQLANIARGGYVLKDCAGQPELIFIATGSEVELAVAAYEKLTAEGVKARVVSMPSTDAFDKQDAAYRESVLPKAVTARVAVEAGIADYWYKYVGLNGAIVGMTTFGESAPAELLFEEFGFTVDNVVAKAKELLH 664
                                    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       401       411       421       431       441       451       461       471       481       491       501       511       521       531       541       551       561       571       581       591       601       611       621       631       641       651       661
   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  (3, 6)

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

(-) CATH Domains  (2, 6)

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

(-) Pfam Domains  (3, 6)

Asymmetric/Biological Unit
(-)
Clan: THDP-binding (106)
(-)
Clan: no clan defined [family: Transketolase_C] (40)

(-) Gene Ontology  (9, 9)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (TKT1_ECOLI | P27302)
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:0030145    manganese ion binding    Interacting selectively and non-covalently with manganese (Mn) ions.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0030976    thiamine pyrophosphate binding    Interacting selectively and non-covalently with thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases.
    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.
    GO:0004802    transketolase activity    Catalysis of the reversible transfer of a 2-carbon ketol group (CH2OH-CO-) from a ketose phosphate donor to an aldose phosphate acceptor.
biological process
    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:0009052    pentose-phosphate shunt, non-oxidative branch    The branch of the pentose-phosphate shunt which does not involve oxidation reactions. It comprises a series of sugar phosphate interconversions, starting with ribulose 5-P and producing fructose 6-P and glyceraldehyde 3-P.
cellular component
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

 Visualization

(-) Interactive Views

Asymmetric/Biological Unit
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
    STRAP
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    RasMol
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
 
  Ligands, Modified Residues, Ions
    CA  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    EDO  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    R5P  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    RP5  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    TPP  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
 
  Sites
    AC1  [ RasMol ]  +environment [ RasMol ]
    AC2  [ RasMol ]  +environment [ RasMol ]
    AC3  [ RasMol ]  +environment [ RasMol ]
    AC4  [ RasMol ]  +environment [ RasMol ]
    AC5  [ RasMol ]  +environment [ RasMol ]
    AC6  [ RasMol ]  +environment [ RasMol ]
    AC7  [ RasMol ]  +environment [ RasMol ]
    AC8  [ RasMol ]  +environment [ RasMol ]
    AC9  [ RasMol ]  +environment [ RasMol ]
    BC1  [ RasMol ]  +environment [ RasMol ]
    BC2  [ RasMol ]  +environment [ RasMol ]
    BC3  [ RasMol ]  +environment [ RasMol ]
    BC4  [ RasMol ]  +environment [ RasMol ]
    BC5  [ RasMol ]  +environment [ RasMol ]
    BC6  [ RasMol ]  +environment [ RasMol ]
    BC7  [ RasMol ]  +environment [ RasMol ]
    BC8  [ RasMol ]  +environment [ RasMol ]
    BC9  [ RasMol ]  +environment [ RasMol ]
    CC1  [ RasMol ]  +environment [ RasMol ]
    CC2  [ RasMol ]  +environment [ RasMol ]
    CC3  [ RasMol ]  +environment [ RasMol ]
    CC4  [ RasMol ]  +environment [ RasMol ]
    CC5  [ RasMol ]  +environment [ RasMol ]
 
  Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 2r5n)
 

(-) Still Images

Jmol
  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
[ Asym./Biol. Unit PNG format | Asym./Biol. Unit - sites PNG format ](automatic orientation, automatically generated)
Molscript
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick
[ mono PDF format | stereo PDF format ](default orientation, automatically generated)

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
  2r5n
    Family and Domain Information: ProDom | SYSTERS
    General Structural Information: GlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in Membranes: OPM
    Protein Surface: SURFACE
    Secondary Structure: DSSP (structure derived) | HSSP (homology derived)
    Structural Genomics: GeneCensus
    Structural Neighbours: CE | VAST
    Structure Classification: CATH | Dali | SCOP
    Validation and Original Data: BMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
 
Access by UniProt ID/Accession number
  TKT1_ECOLI | P27302
    Comparative Protein Structure Models: ModBase
    Genomic Information: Ensembl
    Protein-protein Interaction: DIP
    Sequence, Family and Domain Information: InterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  2.2.1.1
    General Enzyme Information: BRENDA | EC-PDB | Enzyme | IntEnz
    Pathway: KEGG | MetaCyc
 
Access by Disease Identifier   (MIM ID)
  (no 'MIM ID' available)
    Disease Information: OMIM
 
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related Information: GenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain Information: XDom
    Interatomic Contacts of Structural Units: CSU
    Ligand-protein Contacts: LPC
    Protein Cavities: castP
    Sequence and Secondary Structure: PDBCartoon
    Structure Alignment: STRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence Browser: STING
 
Access by UniProt ID/Accession number
  TKT1_ECOLI | P27302
    Protein Disorder Prediction: DisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

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

UniProtKB/Swiss-Prot
        TKT1_ECOLI | P27302: 1qgd 2r8o 2r8p 5hht

(-) Related Entries Specified in the PDB File

1qgd ENZYME WITHOUT SUBSTRATE
2r8o
2r8p