catalytic core domain of cysteinyl tRNA synthetase
Cysteinyl tRNA synthetase (CysRS) catalytic core domain. This class I enzyme is a monomer which aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding.
Structure:3C8Z; Mycobacterium smegmatis Mshc with bound zinc and cysteinyl adenylate analogue, 5'-O-[N-(l-cysteinyl)-sulfamonyl]adenosine (CSA), defined using 4 A contacts.
Jiyao W et al.(2023). "The conserved domain database in 2023.",