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4KXU

Human transketolase in covalent complex with donor ketose D-fructose-6-phosphate

Functional Information from GO Data
ChainGOidnamespacecontents
A0000287molecular_functionmagnesium ion binding
A0004802molecular_functiontransketolase activity
A0005509molecular_functioncalcium ion binding
A0005515molecular_functionprotein binding
A0005654cellular_componentnucleoplasm
A0005737cellular_componentcytoplasm
A0005777cellular_componentperoxisome
A0005829cellular_componentcytosol
A0006098biological_processpentose-phosphate shunt
A0009052biological_processpentose-phosphate shunt, non-oxidative branch
A0016604cellular_componentnuclear body
A0016607cellular_componentnuclear speck
A0016740molecular_functiontransferase activity
A0016744molecular_functiontransketolase or transaldolase activity
A0019682biological_processglyceraldehyde-3-phosphate metabolic process
A0030976molecular_functionthiamine pyrophosphate binding
A0031982cellular_componentvesicle
A0042803molecular_functionprotein homodimerization activity
A0046166biological_processglyceraldehyde-3-phosphate biosynthetic process
A0046872molecular_functionmetal ion binding
A0070062cellular_componentextracellular exosome
A1901159biological_processD-xylulose 5-phosphate biosynthetic process
Functional Information from PDB Data
site_idAC1
Number of Residues9
DetailsBINDING SITE FOR RESIDUE EDO A 1001
ChainResidue
ASER35
AGLY36
AHIS37
AGLY259
AASP424
AARG474
AS6P1014
AHOH7105
AHOH7207

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE EDO A 1002
ChainResidue
APHE71
AVAL72
ALEU73
ALEU82
APHE117
AHOH7010
AHOH7043
AHOH7078

site_idAC3
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO A 1003
ChainResidue
ATYR564
AALA588
AASN590
AHOH7037
AHOH7057
AHOH7102
AHOH7357

site_idAC4
Number of Residues10
DetailsBINDING SITE FOR RESIDUE EDO A 1004
ChainResidue
AARG21
ASER25
AALA84
AGLU88
AGLU94
ALEU97
ALYS283
AHOH7239
AHOH7485
AHOH7721

site_idAC5
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO A 1005
ChainResidue
APRO63
AASN68
AASP69
AARG70
APHE71
AARG379
AHOH7378

site_idAC6
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 1006
ChainResidue
AASP155
AASN185
ALEU187
ATPP1015
AHOH7009

site_idAC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EDO A 1007
ChainResidue
AALA33
AARG101
AGLU423
ALYS597
AHOH7222

site_idAC8
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO A 1008
ChainResidue
ALEU92
AASP106
ALEU107
AGLN115
AHOH7095
AHOH7131
AHOH7133

site_idAC9
Number of Residues6
DetailsBINDING SITE FOR RESIDUE NA A 1009
ChainResidue
AASN411
AALA461
ATHR464
ACYS468
AHOH7084
AHOH7101

site_idBC1
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO A 1010
ChainResidue
ALYS11
APHE53
AHIS54
AARG57
ATHR287
AHOH7130
AHOH7223

site_idBC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO A 1011
ChainResidue
AGLN10
ALYS11
AILE284
AASN590
AARG591
AHOH7347
AHOH7803

site_idBC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE EDO A 1012
ChainResidue
ATYR137
ATYR141
ATYR173
AHOH7193
AHOH7261
AHOH7766

site_idBC4
Number of Residues12
DetailsBINDING SITE FOR RESIDUE EDO A 1013
ChainResidue
AASP155
AGLY156
ALEU158
ASER159
ATRP164
APRO194
ALEU195
ATYR202
AARG205
AHOH7176
AHOH7746
AHOH7799

site_idBC5
Number of Residues23
DetailsBINDING SITE FOR RESIDUE S6P A 1014
ChainResidue
AGLY123
AGLN189
AHIS258
AARG318
ASER345
APHE389
AHIS416
AASP424
AGLN428
AARG474
AEDO1001
ATPP1015
AHOH7056
AHOH7157
AHOH7235
AHOH7269
AHOH7723
AHOH7783
AHOH7784
AHOH7785
AHIS37
AHIS77
AHIS110

site_idBC6
Number of Residues26
DetailsBINDING SITE FOR RESIDUE TPP A 1015
ChainResidue
ASER40
ALYS75
AHIS77
AGLY123
ASER124
ALEU125
AGLY154
AASP155
AGLY156
AGLU157
AGLU160
AASN185
ALEU187
AGLY188
AGLN189
ALYS244
AHIS258
AASP341
AILE364
AGLU366
APHE392
AARG395
AGLN428
AMG1006
AS6P1014
AHOH7009

Functional Information from PROSITE/UniProt
site_idPS00801
Number of Residues21
DetailsTRANSKETOLASE_1 Transketolase signature 1. RissIQattaagSGHPTscCS
ChainResidueDetails
AARG23-SER43

site_idPS00802
Number of Residues17
DetailsTRANSKETOLASE_2 Transketolase signature 2. GEDGPSQmALEdlAmfR
ChainResidueDetails
AGLY422-ARG438

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsActive site: {"description":"Proton donor","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues6
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues12
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsSite: {"description":"Important for catalytic activity","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues7
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"19608861","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues2
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"UniProtKB","id":"P40142","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues1
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"19690332","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"20068231","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"19690332","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"20068231","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"18669648","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"20068231","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P50137","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues2
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)","evidences":[{"source":"PubMed","id":"28112733","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

247947

PDB entries from 2026-01-21

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