In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 11, No. 1 ( 2021-08-06)
Abstract:
Lactobacillus delbrueckii JCM 1002 T grows on highly polymerized inulin-type fructans as its sole carbon source. When it was grown on inulin, a 〉 10 kb long gene cluster inuABCDEF (Ldb1381-1386) encoding a plausible ABC transporter was suggested to be induced, since a transcriptome analysis revealed that the fourth gene inuD (Ldb1384) was up-regulated most prominently. Although Bacillus subtilis 168 is originally unable to utilize inulin, it became to grow on inulin upon heterologous expression of inuABCDEF . When freshly cultured cells of the recombinant B. subtilis were then densely suspended in buffer containing inulin polymers and incubated, inulin gradually disappeared from the buffer and accumulated in the cells without being degraded, whereas levan-type fructans did not disappear. The results imply that inuABCDEF might encode a novel ABC transporter in L. delbrueckii to “monopolize” inulin polymers selectively, thereby, providing a possible advantage in competition with other concomitant inulin-utilizing bacteria.
Type of Medium:
Online Resource
ISSN:
2045-2322
DOI:
10.1038/s41598-021-95356-1
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2021
detail.hit.zdb_id:
2615211-3
