Part of a bacterial microcompartment (BMC) locus required for growth on plant and algal sugars, including L-fucose and L-rhamnose (PubMed:24487526). Thought to be active on lactyl-CoA in a lactaldehyde-degradation pathway (Probable). CoA is regenerated within the BMC via this enzyme, although there must also be cofactor transport across the BMC. Directly targeted to the BMC (Probable). phosphate + propanoyl-CoA = CoA + propanoyl phosphate There are 2 Zn(2+) ions per monomer; Zn(2+) and CoA bind inbetween the 2 domains in each monomer. Full-length protein forms large oligomers. Possible homotrimer and monomer, when purified in the absence of the encapsulation peptide (EP, residues 1-20). The EP may influence oligomerization. Formed by 2 beta-barrels, each is capped on both ends by short alpha-helices. Belongs to the PduL family.