| RRC ID |
55837
|
| 著者 |
Satiaputra J, Eijkelkamp BA, McDevitt CA, Shearwin KE, Booker GW, Polyak SW.
|
| タイトル |
Biotin-mediated growth and gene expression in Staphylococcus aureus is highly responsive to environmental biotin.
|
| ジャーナル |
Appl Microbiol Biotechnol
|
| Abstract |
Biotin (Vitamin B7) is a critical enzyme co-factor in metabolic pathways important for bacterial survival. Biotin is obtained either from the environment or by de novo synthesis, with some bacteria capable of both. In certain species, the bifunctional protein BirA plays a key role in biotin homeostasis as it regulates expression of biotin biosynthetic enzymes in response to biotin demand and supply. Here, we compare the effect of biotin on the growth of two bacteria that possess a bifunctional BirA, namely Escherichia coli and Staphylococcus aureus. Unlike E. coli that could fulfill its biotin requirements through de novo synthesis, S. aureus showed improved growth rates in media supplemented with 10 nM biotin. S. aureus also accumulated more radiolabeled biotin from the media highlighting its ability to efficiently scavenge exogenous material. These data are consistent with S. aureus colonizing low biotin microhabitats. We also demonstrate that the S. aureus BirA protein is a transcriptional repressor of BioY, a subunit of the biotin transporter, and an operon containing yhfT and yhfS, the products of which have a putative role in fatty acid homeostasis. Increased expression of bioY is proposed to help cue S. aureus for efficient scavenging in low biotin environments.
|
| 巻・号 |
102(8)
|
| ページ |
3793-3803
|
| 公開日 |
2018-4-1
|
| DOI |
10.1007/s00253-018-8866-z
|
| PII |
10.1007/s00253-018-8866-z
|
| PMID |
29508030
|
| MeSH |
Bacterial Proteins / genetics
Bacterial Proteins / metabolism
Biotin / metabolism
Biotin / pharmacology*
Carbon-Nitrogen Ligases / genetics
Carbon-Nitrogen Ligases / metabolism
Environmental Microbiology*
Escherichia coli / drug effects
Escherichia coli / genetics
Escherichia coli / growth & development
Escherichia coli Proteins / genetics
Escherichia coli Proteins / metabolism
Gene Expression Regulation, Bacterial / drug effects*
Repressor Proteins / genetics
Repressor Proteins / metabolism
Staphylococcus aureus / drug effects*
Staphylococcus aureus / genetics
Staphylococcus aureus / growth & development
|
| IF |
3.53
|
| 引用数 |
3
|
| リソース情報 |
| 原核生物(大腸菌) |
MG1655, JD26186 |
