Involved in post-transcriptional regulation of gene expression. Forms a complex composed of at least MKT1, PBP1, XAC1 and LSM12 (PubMed:32532821). Forms a complex composed of at least MKT1L, PBP1, XAC1 and LSM12 (PubMed:32532821). Expressed in the bloodstream form (at protein level). RNAi-mediated knockdown in the bloodstream form abolishes cell population growth.