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7NNL

Cryo-EM structure of the KdpFABC complex in an E1-ATP conformation loaded with K+

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Potassium-transporting ATPase potassium-binding subunitpolymer55759218.61UniProt (A0A2S5ZPF1)
Pfam (PF03814)
UniProt (by SIFTS) (P03959)
Escherichia coliATP phosphohydrolase [potassium-transporting] A chain,Potassium-binding and translocating subunit A,Potassium-translocating ATPase A chain
2B
(C)
Potassium-transporting ATPase KdpC subunitpolymer19020281.01UniProt (A0A037YI39)
Pfam (PF02669)
UniProt (by SIFTS) (P03961)
Escherichia coliATP phosphohydrolase [potassium-transporting] C chain,Potassium-binding and translocating subunit C,Potassium-translocating ATPase C chain
3C
(D)
Potassium-transporting ATPase KdpF subunitpolymer272853.51UniProt (P36937)
Pfam (PF09604)
Escherichia coliATP phosphohydrolase [potassium-transporting] F chain,Potassium-binding and translocating subunit F,Potassium-translocating ATPase F chain
4D
(B)
Potassium-transporting ATPase ATP-binding subunitpolymer68272346.91UniProt (A0A024L5I2)
Pfam (PF00122)
Pfam (PF00702)
UniProt (by SIFTS) (P03960)
Escherichia coliATP phosphohydrolase [potassium-transporting] B chain,Potassium-binding and translocating subunit B,Potassium-translocating ATPase B chain
5E, F, G, H, I...
(A, B)
POTASSIUM IONnon-polymer39.110Chemie (K)
6M, N
(A)
CARDIOLIPINnon-polymer1464.02Chemie (CDL)
7P
(B)
PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTERnon-polymer505.21Chemie (ACP)
Sequence modifications
B: 1 - 682 (UniProt: A0A024L5I2)
PDBExternal DatabaseDetails
Asn 307Asp 307engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight154700.0
Non-Polymers*Number of molecules13
Total formula weight3824.3
All*Total formula weight158524.2
*Water molecules are not included.

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PDB entries from 2026-01-28

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