The Mycobacterium tuberculosis Rv2258c protein is an S-adenosyl-L-methionine (SAM)-dependent methyltransferase (MTase) [1]. The monomer structure of Rv2258c consists of two domains which are linked by a long alpha-helix. The N-terminal domain, found in this entry, is essential for dimerization and the C-terminal domain has the Class I MTase fold. This domain has a winged Helix-Turn-Helix fold.

1: Crystal structure of Rv2258c from Mycobacterium tuberculosis H37Rv, an S-adenosyl-l-methionine-dependent methyltransferase. Im HN, Kim HS, An DR, Jang JY, Kim J, Yoon HJ, Yang JK, Suh SW; J Struct Biol. 2016;193:172-180. PMID:26772148