Crystal structure of receiver domain of KdpE D52A mutant from E. coli

An asymmetric heterodomain interface stabilizes a response regulator-DNA complex.

KDP operon transcriptional regulatory protein KdpE
Response regulatory domain residues 3-121

GAMANVLIVEDEQAIRRFLRTALEGDGMRVFEAETLQRGLLEAATRKPDLIILALGLPDGDGIEFIRDLRQWSAVPVIVL
SARSEESDKIAALDAGADDYLSKPFGIGELQARLRVALRRHSA

15% PEG 8K, 0.1M NaCl, 0.1M TRIS pH 7.2-8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

NVLIVEDEQAIRRFLRTALEGDGMRVFEAETLQRGLLEAATRKPDLIILDLGLPDGDGIEFIRDLRQWSAVPVIVLSARS
EESDKIAALDAGADDYLSKPFGIGELQARLRVALRRHSA