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6FET

Crystal structure of human phosphodiesterase 4D2 catalytic domain with inhibitor NPD-1439

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
cAMP-specific 3',5'-cyclic phosphodiesterase 4Dpolymer36441808.24UniProt (Q08499)
Pfam (PF00233)
Homo sapiens (Human)DPDE3,PDE43
2CB, DA, E, UB
(C, B, A, D)
ZINC IONnon-polymer65.44Chemie (ZN)
3DB, EA, F, VB
(C, B, A, D)
MAGNESIUM IONnon-polymer24.34Chemie (MG)
4AA, AB, AC, BA, BB...
(A, C, D, B)
1,2-ETHANEDIOLnon-polymer62.167Chemie (EDO)
5JB, JC, N, OA
(C, D, A, B)
DI(HYDROXYETHYL)ETHERnon-polymer106.14Chemie (PEG)
6KC, NB, QA, U
(D, C, B, A)
1-(2-{4-[(4aS,8aR)-4-[3,4-bis(difluoromethoxy)phenyl]-1-oxo-1,2,4a,5,8,8a-hexahydrophthalazin-2-yl]piperidin-1-yl}-2-oxoethyl)-4,4-dimethylpiperidine-2,6-dionenon-polymer622.64Chemie (D68)
7JA, KB, LC, PA, V
(B, C, D, A)
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACIDnon-polymer238.35Chemie (EPE)
8CA, RC
(A, D)
NICKEL (II) IONnon-polymer58.72Chemie (NI)
9MB, SB
(C, D)
TETRAETHYLENE GLYCOLnon-polymer194.22Chemie (PG4)
10SC, TC, UC, VC
(A, B, C, D)
waterwater18.0625Chemie (HOH)
Sequence modifications
A, B, C, D: 79 - 438 (UniProt: Q08499)
PDBExternal DatabaseDetails
Gly 75-expression tag
Ser 76-expression tag
His 77-expression tag
Met 78-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight167233.0
Non-Polymers*Number of molecules92
Total formula weight9129.7
All*Total formula weight176362.7
*Water molecules are not included.

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PDB entries from 2025-08-27

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