NOVELTY - An isolated nucleic acid (I) encoding alpha(1,6)-linked glucose oligosaccharide hydrolyzing polypeptide, where (I) encodes 1 of 3 Bifidobacterium breve polypeptide (mbc1g.pk007.h12, mbc2g.pk018.j20, mbc1g.pk026.k1) sequences (S1), given in the specification, hybridizes with the polypeptide encoding nucleic acid under stringent conditions, or is complementary to the polynucleotide sequences, is new.    USE - (VII) is useful for producing cell mass, which involves contacting (VII) under suitable conditions in the presence of limit dextrin, and optionally recovering the cell mass. (M1) is useful for producing target molecules, preferably glycerol or 1,3-propanediol. (M2) is useful for producing target molecules, preferably glycerol or 1,3-propanediol or cell mass (claimed). (I) or (III) is useful for transforming microorganisms such that resulting transformed microorganisms will utilize compounds containing alpha1,6-linkages in fermentations to produce useful products, e.g., enzymes, vitamins, alcohols such as bioethanol, organic acids, antibiotics and cell mass.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a polypeptide (II) encoded by (I);    (2) an isolated nucleic acid molecule (III) encoding alpha(1,6)-linked glucose oligosaccharide hydrolyzing polypeptide, which is chosen from an isolated nucleic acid molecule encoding a chimeric protein comprised of signal peptide operably linked to alpha(1,6)-linked glucose oligosaccharide hydrolyzing polypeptide, nucleic acid molecule that hybridizes with the above nucleic acid under stringent conditions, and a nucleic acid molecule which is complementary to above mentioned nucleic acid molecules;    (3) polypeptide (IV) encoded by (III);    (4) a chimeric gene (V) comprising (I) or (III) operably linked to suitable regulatory sequences;    (5) a vector (VI) comprising (V);    (6) a transformed host cell (VII) comprising (VI);    (7) producing (M1) target molecule in a recombinant host cell involves contacting transformed host cell comprising (V), and at least one chimeric gene for converting monosaccharides to the target molecule, in the presence of limit dextrin under suitable conditions, whereby the target molecule is produced, and optionally recovering the target molecule;    (8) producing (M2) target molecule in recombinant host cell involves contacting transformed host cell comprising an isolated nucleic acid molecule (VIII) chosen from:    (a) nucleic acid molecule encoding polypeptide having amino acid sequence of Bifidobacterium breve mbc1g.pk026.k1 gene product, B.breve mbc1g.pk007.h12 gene product, Streptococcus mutans dexB gene product, or amino acid sequence of B.breve gene mbc2g.pk018.j20 without its native signal peptide sequence,    (b) nucleic acid molecule that hybridizes with (a) under stringent hybridization conditions, or    (c) nucleic acid molecule that is complementary to (a) or (b), and at least one chimeric gene for converting monosaccharides to target molecule, in the presence of dextrin under suitable conditions;    (9) producing cell mass in recombinant host cell, or degrading limit dextrin involves contacting transformed host cell comprising (VIII) with limit dextrin, and optionally recovering the cell mass or degradation product, respectively; and    (10) a polypeptide having an amino acid sequence that has at least 69% identity based on BLASTP method of alignment when compared to a polypeptide having sequence of S.mutans dexB gene product, the polypeptide having alpha1,6-linked glucose oligosaccharide hydrolyzing activity.