論文 - 詳細
| RRC ID | 33572 |
|---|---|
| 著者 | Kobayashi K, Sudiarta IP, Kodama T, Fukushima T, Ara K, Ozaki K, Sekiguchi J. |
| タイトル | Identification and characterization of a novel polysaccharide deacetylase C (PdaC) from Bacillus subtilis. |
| ジャーナル | J Biol Chem |
| Abstract |
Cell wall metabolism and cell wall modification are very important processes that bacteria use to adjust to various environmental conditions. One of the main modifications is deacetylation of peptidoglycan. The polysaccharide deacetylase homologue, Bacillus subtilis YjeA (renamed PdaC), was characterized and found to be a unique deacetylase. The pdaC deletion mutant was sensitive to lysozyme treatment, indicating that PdaC acts as a deacetylase. The purified recombinant and truncated PdaC from Escherichia coli deacetylated B. subtilis peptidoglycan and its polymer, (-GlcNAc-MurNAc[-L-Ala-D-Glu]-)(n). Surprisingly, RP-HPLC and ESI-MS/MS analyses showed that the enzyme deacetylates N-acetylmuramic acid (MurNAc) not GlcNAc from the polymer. Contrary to Streptococcus pneumoniae PgdA, which shows high amino acid sequence similarity with PdaC and is a zinc-dependent GlcNAc deacetylase toward peptidoglycan, there was less dependence on zinc ion for deacetylation of peptidoglycan by PdaC than other metal ions (Mn(2+), Mg(2+), Ca(2+)). The kinetic values of the activity toward B. subtilis peptidoglycan were K(m) = 4.8 mM and k(cat) = 0.32 s(-1). PdaC also deacetylated N-acetylglucosamine (GlcNAc) oligomers with a K(m) = 12.3 mM and k(cat) = 0.24 s(-1) toward GlcNAc(4). Therefore, PdaC has GlcNAc deacetylase activity toward GlcNAc oligomers and MurNAc deacetylase activity toward B. subtilis peptidoglycan. |
| 巻・号 | 287(13) |
| ページ | 9765-9776 |
| 公開日 | 2012-3-23 |
| DOI | 10.1074/jbc.M111.329490 |
| PII | S0021-9258(20)65391-1 |
| PMID | 22277649 |
| PMC | PMC3323032 |
| MeSH | Bacillus subtilis / enzymology* Bacillus subtilis / genetics Bacterial Proteins / genetics Bacterial Proteins / metabolism* Escherichia coli / enzymology Escherichia coli / genetics Esterases / chemistry* Esterases / genetics Esterases / metabolism Gene Deletion Kinetics Peptidoglycan / chemistry* Peptidoglycan / genetics Peptidoglycan / metabolism Sequence Homology, Amino Acid Streptococcus pneumoniae / enzymology Streptococcus pneumoniae / genetics |
| IF | 4.238 |
| 引用数 | 24 |
| WOS 分野 | BIOCHEMISTRY & MOLECULAR BIOLOGY |
| オルトメトリクス指標 |
オルトメトリクス指標項目
|
| 最多言及媒体 | Blogs |
| 各媒体での言及数の合計 | 1 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 原核生物(枯草菌) | MBS35 MBS36 MBS37 MBS38 |