Structure of the GH1 domain of guanylate kinase-associated protein from Rattus norvegicus

- The crystal structure of GKAP homology domain 1 (GH1) was determined.
- GKAP GH1 is a three-helix bundle connected by short flexible loops.
- The predicted helix α4 associates weakly with the helix α3, suggesting dynamic nature of the GH1 domain.