Providing transactional collections of data structures with the same performance of highly concurrent data structures enables performance-competitive transactional composability. Although Software Transactional Memory (STM) is increasingly becoming a promising technology for designing and implementing transactional applications, concurrent data structures still do not exploit STM's advantages. Recently, Optimistic Transactional Boosting (OTB) has been proposed as a methodology to implement transactional versions of highly concurrent data structures. OTB works in a similar way to STM algorithms, but on the level of data structure semantics. This similarity is a motivation for finding a way to integrate operations of transactional data structures with STM frameworks.