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1TKC

SPECIFICITY OF COENZYME BINDING IN THIAMIN DIPHOSPHATE DEPENDENT ENZYMES: CRYSTAL STRUCTURES OF YEAST TRANSKETOLASE IN COMPLEX WITH ANALOGS OF THIAMIN DIPHOSPHATE

Functional Information from GO Data
ChainGOidnamespacecontents
A0004802molecular_functiontransketolase activity
A0005515molecular_functionprotein binding
A0005737cellular_componentcytoplasm
A0005829cellular_componentcytosol
A0006098biological_processpentose-phosphate shunt
A0016740molecular_functiontransferase activity
A0046872molecular_functionmetal ion binding
B0004802molecular_functiontransketolase activity
B0005515molecular_functionprotein binding
B0005737cellular_componentcytoplasm
B0005829cellular_componentcytosol
B0006098biological_processpentose-phosphate shunt
B0016740molecular_functiontransferase activity
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CA A 682
ChainResidue
AASP157
AASN187
AILE189
AM6T681

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CA B 682
ChainResidue
BASP157
BASN187
BILE189
BM6T681

site_idAC3
Number of Residues20
DetailsBINDING SITE FOR RESIDUE M6T A 681
ChainResidue
AHIS69
AGLY116
ALEU118
AASP157
AGLY158
AGLU162
AASN187
AILE189
ATHR190
AILE191
AHIS263
ACA682
BASP382
BLEU383
BILE416
BGLU418
BPHE445
BTYR448
BHIS481
AALA33

site_idAC4
Number of Residues19
DetailsBINDING SITE FOR RESIDUE M6T B 681
ChainResidue
AASP382
AGLU418
APHE445
ATYR448
AHIS481
BALA33
BHIS69
BGLY116
BPRO117
BLEU118
BASP157
BGLY158
BASP185
BASN187
BILE189
BTHR190
BILE250
BHIS263
BCA682

Functional Information from PROSITE/UniProt
site_idPS00801
Number of Residues21
DetailsTRANSKETOLASE_1 Transketolase signature 1. RilaVDtvskanSGHPGapLG
ChainResidueDetails
AARG16-GLY36

site_idPS00802
Number of Residues17
DetailsTRANSKETOLASE_2 Transketolase signature 2. GEDGPTHqPIEtlAhfR
ChainResidueDetails
AGLY475-ARG491

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Proton donor","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues16
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues16
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"8176731","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"8999873","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"9398292","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsSite: {"description":"Important for catalytic activity","evidences":[{"source":"PubMed","id":"9398292","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"19779198","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"17330950","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"18407956","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"19779198","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues4
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"18407956","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues4
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)","evidences":[{"source":"PubMed","id":"22106047","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues1
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
ASER254

site_idCSA10
Number of Residues1
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
BHIS260

site_idCSA2
Number of Residues1
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
BSER254

site_idCSA3
Number of Residues1
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
AGLU418

site_idCSA4
Number of Residues1
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
BGLU418

site_idCSA5
Number of Residues2
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
AGLU418
AHIS481

site_idCSA6
Number of Residues2
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
BGLU418
BHIS481

site_idCSA7
Number of Residues2
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
AHIS30
AHIS263

site_idCSA8
Number of Residues2
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
BHIS30
BHIS263

site_idCSA9
Number of Residues1
DetailsAnnotated By Reference To The Literature 1dtw
ChainResidueDetails
AHIS260

site_idMCSA1
Number of Residues4
DetailsM-CSA 219
ChainResidueDetails
AHIS30activator, hydrogen bond donor, steric role
AHIS263hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
AGLU418hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
AHIS481electrostatic stabiliser, hydrogen bond acceptor

site_idMCSA2
Number of Residues4
DetailsM-CSA 219
ChainResidueDetails
BHIS30activator, hydrogen bond donor, steric role
BHIS263hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
BGLU418hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
BHIS481electrostatic stabiliser, hydrogen bond acceptor

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PDB entries from 2025-07-30

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