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Cite: NAR/gkaa742 2020



PUL General Information

Literature Information

PUL ID

PUL0137

PubMed

30306201, Appl Microbiol Biotechnol. 2018 Dec;102(24):10645-10663. doi: 10.1007/s00253-018-9413-7. Epub 2018 Oct 10.

Characterization method

sequence homology analysis

Genomic accession number

CP028460

Nucelotide position range

589943-596176

Substrate

lactose

Loci

CNCMI4602_0490-CNCMI4602_0492

Species

Bifidobacterium animalis subsp. animalis/302912

Degradation or Biosynthesis

degradation

Gene Name

Locus Tag

Protein ID

Gene Position

GenBank Contig Range

EC Number

- CNCMI4602_0490 AYN23350.1 0 - 1518 (-) CP028460.1:589943-591461 -
- CNCMI4602_0491 AYN23351.1 1827 - 5031 (+) CP028460.1:591770-594974 -
- CNCMI4602_0492 AYN23352.1 5238 - 6234 (-) CP028460.1:595181-596177 -

Cluster number

1

Gene name

Gene position

Gene type

Found by CGCFinder?

- 1 - 1518 (-) TC: gnl|TC-DB|Q9X761|2.A.2.2.3 Yes
- 1828 - 5031 (+) CAZyme: GH2 Yes
- 5239 - 6234 (-) TF: DBD-Pfam|LacI,DBD-SUPERFAMILY|0044558 No

PUL ID

PUL0137

PubMed

30306201, Appl Microbiol Biotechnol. 2018 Dec;102(24):10645-10663. doi: 10.1007/s00253-018-9413-7. Epub 2018 Oct 10.

Title

Staying alive: growth and survival of Bifidobacterium animalis subsp. animalis under in vitro and in vivo conditions.

Author

Egan M, Bottacini F, O'Connell Motherway M, Casey PG, Morrissey R, Melgar S, Faurie JM, Chervaux C, Smokvina T, van Sinderen D

Abstract

Members of the Bifidobacterium genus are widely used as probiotics in fermented milk products. Bifidobacterium animalis subsp. animalis CNCM I-4602 grows and survives poorly in reconstituted skimmed milk (RSM). Availing of genome and transcriptome information, this poor growth and survival phenotype in milk was substantially improved by the addition of certain compounds, such as yeast extract, uric acid, glutathione, cysteine, ferrous sulfate, and a combination of magnesium sulfate and manganese sulfate. Carbohydrate utilization of CNCM I-4602 was also investigated, allowing the identification of several carbohydrate utilization gene clusters, and highlighting this strain's inability to utilize lactose, unlike the type strain of this subspecies, B. animalis subsp. animalis ATCC25527 and the B. animalis subsp. lactis subspecies. In addition, the ability of B. animalis subsp. animalis CNCM I-4602 to colonize a murine model was investigated, which showed that this strain persists in the murine gut for a period of at least 4 weeks. Associated in vivo transcriptome analysis revealed that, among other genes, a gene cluster encoding a predicted type IVb tight adherence (Tad) pilus was upregulated, indicating that this extracellular structure plays a role in the colonization/adaptation of the murine gastrointestinal tract by this strain.