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3FRG

Catalytic Domain of Human Phosphodiesterase 4B2B in Complex with a Quinoline Inhibitor

Functional Information from GO Data
ChainGOidnamespacecontents
A0004114molecular_function3',5'-cyclic-nucleotide phosphodiesterase activity
A0007165biological_processsignal transduction
A0008081molecular_functionphosphoric diester hydrolase activity
Functional Information from PDB Data
site_idAC1
Number of Residues11
DetailsBINDING SITE FOR RESIDUE SK4 A 1
ChainResidue
ATYR233
AHOH523
AHOH789
ATHR345
AMET347
AASP392
AASN395
AMET431
AGLN443
APHE446
AHOH513

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE ZN A 504
ChainResidue
AHIS238
AHIS274
AASP275
AASP392
AHOH581
AHOH668

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 505
ChainResidue
AASP275
AHOH579
AHOH580
AHOH581
AHOH582
AHOH585

site_idAC4
Number of Residues2
DetailsBINDING SITE FOR RESIDUE ARS A 506
ChainResidue
APHE156
ACYS194

site_idAC5
Number of Residues2
DetailsBINDING SITE FOR RESIDUE ARS A 2
ChainResidue
AGLU317
ACYS320

site_idAC6
Number of Residues2
DetailsBINDING SITE FOR RESIDUE ARS A 3
ChainResidue
ASER429
ACYS432

site_idAC7
Number of Residues7
DetailsBINDING SITE FOR RESIDUE GOL A 507
ChainResidue
AASP277
AGLU292
AHOH518
AHOH544
AHOH622
AHOH702
AHOH826

site_idAC8
Number of Residues3
DetailsBINDING SITE FOR RESIDUE GOL A 508
ChainResidue
ATYR449
AHOH827
AHOH828

Functional Information from PROSITE/UniProt
site_idPS00126
Number of Residues12
DetailsPDEASE_I_1 3'5'-cyclic nucleotide phosphodiesterase domain signature. HDVdHpGvsNqF
ChainResidueDetails
AHIS274-PHE285

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues329
DetailsDomain: {"description":"PDEase","evidences":[{"source":"PROSITE-ProRule","id":"PRU01192","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15260978","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1TB5","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15260978","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15576036","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15685167","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17727341","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18539455","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1RO6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1RO9","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1TB5","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XLX","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XLZ","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XM4","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XM6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XMU","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XMY","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XN0","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XOS","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XOT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y2H","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y2J","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2QYL","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3D3P","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"10846163","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15576036","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15685167","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17727341","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18539455","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1F0J","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1RO6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1RO9","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XLX","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XLZ","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XM4","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XM6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XMU","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XMY","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XN0","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XOS","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XOT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y2H","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y2J","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2QYL","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3D3P","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"10846163","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15260978","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15576036","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15685167","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18539455","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1F0J","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1RO6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1RO9","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1TB5","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XLX","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XLZ","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XM4","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XM6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XMU","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XMY","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XN0","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XOS","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1XOT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y2H","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y2J","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3D3P","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15003452","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"15260978","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"1ROR","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1TB5","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P14646","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

247536

PDB entries from 2026-01-14

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