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Square conformation of KtrA WT ring with bound ATP and calcium External Resource: Annotation       Chains Type Family Name  Domain Identifier  Family Identifier Provenance Source (Version)     B SCOP2B Superfamily Potassium channel/Rex NAD-binding domain-like  8057613   3000042     SCOP2B (2022-06-29)   A SCOP2B Superfamily Potassium channel/Rex NAD-binding domain-like  8057613   3000042     SCOP2B (2022-06-29)   
      Chains Family Name Domain Identifier  Architecture Possible Homology Homology Topology Family Provenance Source (Version)     B TrkA_C e6s5cB2   A: a+b two layers X: TrkA C-terminal domain-like (From Topology) H: TrkA C-terminal domain-like (From Topology) T: TrkA C-terminal domain-like F: TrkA_C ECOD (1.6)   B TrkA_N e6s5cB1   A: a/b three-layered sandwiches X: Rossmann-like H: Rossmann-related T: NAD(P)-binding Rossmann-fold domains F: TrkA_N ECOD (1.6)   A TrkA_C e6s5cA1   A: a+b two layers X: TrkA C-terminal domain-like (From Topology) H: TrkA C-terminal domain-like (From Topology) T: TrkA C-terminal domain-like F: TrkA_C ECOD (1.6)   A TrkA_N e6s5cA2   A: a/b three-layered sandwiches X: Rossmann-like H: Rossmann-related T: NAD(P)-binding Rossmann-fold domains F: TrkA_N ECOD (1.6)   
       Chains Accession Name Description Comments Source    PF02080 TrkA-C domain (TrkA_C) TrkA-C domain This domain is often found next to the Pfam:PF02254 domain.  The exact function of this domain is unknown. It has been suggested that it may bind an unidentified ligand [1].  The domain is predicted to adopt an all beta structure [1].  Domain   PF02254 TrkA-N domain (TrkA_N) TrkA-N domain This domain is found in a wide variety of proteins. These protein include potassium channels Swiss:P31069, phosphoesterases Swiss:Q59027, and various other transporters. This domain binds to NAD.  Domain   
 Chains Polymer Molecular Function Biological Process Cellular Component Ktr system potassium uptake protein A