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3Q8K

Crystal Structure of Human Flap Endonuclease FEN1 (WT) in complex with product 5'-flap DNA, SM3+, and K+

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0003824molecular_functioncatalytic activity
A0004518molecular_functionnuclease activity
A0016788molecular_functionhydrolase activity, acting on ester bonds
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SM A 1001
ChainResidue
AASP86
AGLU160
AHOH598
AHOH693
AHOH742
EDT2

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SM A 1002
ChainResidue
AOH347
AHOH555
EDT2
AGLU160
AASP179
AASP181

site_idAC3
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SM A 1003
ChainResidue
AGLU57
AGLU285
AGLU313
AGLN342
AHOH767
AHOH768
AHOH769

site_idAC4
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SM A 1004
ChainResidue
AGLU57
AGLU59
AGLU313
AGLN342
AHOH764
AHOH765
AHOH766

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE K A 1101
ChainResidue
ASER237
AILE238
AILE241
AHOH627
DDT5
DHOH628

site_idAC6
Number of Residues8
DetailsBINDING SITE FOR RESIDUE OH A 347
ChainResidue
AGLY2
AASP179
AASP181
AASP233
AHOH555
ASM1002
EDT2
EHOH455

Functional Information from PROSITE/UniProt
site_idPS00841
Number of Residues15
DetailsXPG_1 XPG protein signature 1. IKPvYVFDGkpPqLK
ChainResidueDetails
AILE79-LYS93

site_idPS00842
Number of Residues15
DetailsXPG_2 XPG protein signature 2. GIPYLdAPsEAEASC
ChainResidueDetails
AGLY149-CYS163

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues131
DetailsRegion: {"description":"I-domain"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15616578","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1UL1","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues3
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15616578","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1UL1","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5FV7","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15616578","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1UL1","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5FV7","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5ZOD","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PDB","id":"5FV7","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5ZOD","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PDB","id":"5ZOD","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues4
DetailsModified residue: {"description":"Symmetric dimethylarginine; by PRMT5","evidences":[{"source":"HAMAP-Rule","id":"MF_03140","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"20729856","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"19608861","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine; by CDK2","evidences":[{"source":"HAMAP-Rule","id":"MF_03140","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"20729856","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"20068231","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues3
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

247947

PDB entries from 2026-01-21

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