3.A.1.122.14
ABC transporter of unknown function, but aspects of its structure and mechanism of action are known (Yuan et al. 2001; Zoghbi and Altenberg 2013).  Nucleotide-binding domain dimerization occurs as a result of binding to the natural nucleotide triphosphates, ATP, GTP, CTP and UTP, as well as the analog ATP-gamma-S. All the natural nucleotide triphosphates are hydrolyzed at similar rates, whereas ATP-gamma-S is not hydrolyzed. The non-hydrolyzable ATP analog AMP-PNP, frequently assumed to produce the nucleotide-bound conformation, failed to elicit nucleotide-binding domain dimerization (Fendley et al. 2016).