Ontology highlight
ABSTRACT:
SUBMITTER: Huang GY
PROVIDER: S-EPMC4222537 | biostudies-literature | 2014 Nov
REPOSITORIES: biostudies-literature
Huang Gilbert Y GY Gerlits Oksana O OO Blakeley Matthew P MP Sankaran Banumathi B Kovalevsky Andrey Y AY Kim Choel C
Biochemistry 20141022 43
High selectivity of cyclic-nucleotide binding (CNB) domains for cAMP and cGMP are required for segregating signaling pathways; however, the mechanism of selectivity remains unclear. To investigate the mechanism of high selectivity in cGMP-dependent protein kinase (PKG), we determined a room-temperature joint X-ray/neutron (XN) structure of PKG Iβ CNB-B, a domain 200-fold selective for cGMP over cAMP, bound to cGMP (2.2 Å), and a low-temperature X-ray structure of CNB-B with cAMP (1.3 Å). The XN ...[more]