Disclosed herein are
genetically engineered Kluyveromyces marxianus cells capable of producing D-allulose. The
genetically engineered Kluyveromyces marxianus cells comprise a deletion or disruption in a native PFK1
gene; an exogenous
polynucleotide sequence encoding an allulose-6-
phosphate 3-epimerase
enzyme at least 60%, at least 70%, at least 80%, at least 85%, at least 90%, at least 95%, at least 97%, at least 99%, or 100% identical to at least one of SEQ ID NOs:192, 194, and 196, and an exogenous
polynucleotide sequence encoding an allulose-6-
phosphate phosphatase enzyme at least 60%, at least 70%, at least 80%, at least 85%, at least 90%, at least 95%, at least 97%, at least 99%, or 100% identical to at least one of SEQ ID NOs:87, 89, 190, 123, 105, 107, 115, 83, 95, 113, 117, 119, 121, 127, 131, 137, 145, 169, 173, 179, and 183.