链接:https://www.abinscience.cn/product/78/52548.html
名称:Yersinia pestis DHPS/folP Recombinant Protein (N-His)
货号:JN173032
表达系统:E. coli
Accession号:WP_002210188.1
蛋白长度:Met1-Gly277
应用:ELISA, Immunogen, SDS-PAGE, WB, Bioactivity testing in progress
种属:Yersinia pestis
性质:Recombinant
内毒素水平:Please contact with the lab for this information.
纯度:>90% as determined by SDS-PAGE.
状态:Lyophilized
用途范围:仅用于科研
储存:Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Store at 4°C short term (1-2 weeks). Store at -20°C 12 months. Store at -80°C long term.
产品介绍:2026年伊尔库茨克抗鼠疫所不明原因肺炎死亡事件引发关注,鼠疫菌代谢靶点研究价值再被看见。JN173032重组YpDHPS/folP蛋白聚焦叶酸合成关键酶与磺胺作用位点,适用于抗菌靶点、耐药机制及抗叶酸筛选研究。
Yersinia pestis DHPS/folP Recombinant Protein (N-His)(JN173032)是艾必赛生物(abinScience)推出的鼠疫耶尔森菌源重组蛋白,带N端His标签,E. coli表达,覆盖Met1–Gly277全长序列;SDS-PAGE纯度>90%,冻干粉形式提供(冻干保护液:PBS pH 7.4、1 mM EDTA、4%海藻糖、1%甘露醇),无菌水重悬后可用于ELISA、WB、免疫原及DHPS功能assay;短期2–8°C、长期-20~-80°C保存,避免反复冻融(RUO,仅限科研/非临床用途)。
DHPS/folP是细菌叶酸从头合成通路的关键酶,催化6-羟甲基-7,8-二氢蝶啶焦磷酸(DHPP)与对氨基苯甲酸(pABA)缩合生成7,8-二氢蝶酸,进而进入四氢叶酸合成路线,支撑嘌呤、胸苷酸及部分氨基酸合成。该位点正是磺胺类药物的经典作用靶标——磺胺结构类似pABA,可竞争结合DHPS的pABA口袋,阻断叶酸合成而产生抑菌作用。YpDHPS已有较成熟的晶体结构与催化机理研究(SN1机制、loop1/loop2构象变化、Mg2?参与),也是解析磺胺耐药的重要模型。
因此JN173032不只作“抗原”用,更适合作为抗菌靶点研究、磺胺耐药机制分析(folP突变 / 外源sul基因)、抗叶酸化合物筛选、DHPS酶活assay及抗体/ELISA试剂盒开发的重组蛋白工具;与F1/Caf1、Pla、LcrV等产品搭配,可覆盖鼠疫菌“表面抗原—毒力因子—基础代谢”多层级的科研体系。
产品购买联系方式:027-87433958/17302791434
参考文献:
Point Mutations in the folP Gene Partly Explain Sulfonamide Resistance of Streptococcus mutans. PMID: 23533419
Molecular mechanism of plasmid-borne resistance to sulfonamide antibiotics. PMID: 37419898
Sulfonamide resistance: mechanisms and trends. PMID: 11498380
Genetic characterization of co-trimoxazole non-susceptible Streptococcus pneumoniae isolates from Indonesia. PMID: 34816091
Dapsone resistance does not appear to be associated with a mutation in the dihydropteroate synthase-2 gene of Mycobacterium leprae. PMID: 10439322
Molecular insights of co-trimoxazole resistance genes in Haemophilus influenzae isolated in Malaysia. PMID: 24522126
Origin of the Mobile Di-Hydro-Pteroate Synthase Gene Determining Sulfonamide Resistance in Clinical Isolates. PMID: 30687297
Characterization of mutations contributing to sulfathiazole resistance in Escherichia coli. PMID: 9449266
A silent sulfonamide-resistant microbial world: The curious case of missing DHPS in candidate phyla radiation. PMID: 40639500
Dihydropteroate synthase of Mycobacterium leprae and dapsone resistance. PMID: 10817704
Genetic basis for sulfonamide resistance in Bacillus anthracis. PMID: 17536929
Pathogenic Nocardia cyriacigeorgica and Nocardia nova Evolve To Resist Trimethoprim-Sulfamethoxazole by both Expected and Unexpected Pathways. PMID: 29686152
Amino acid repetitions in the dihydropteroate synthase of Streptococcus pneumoniae lead to sulfonamide resistance with limited effects on substrate K(m). PMID: 11181365
Genomic characterization of a mobile-element-associated resistance island in trimethoprim-sulfamethoxazole-resistant Stenotrophomonas maltophilia isolates sharing the same PFGE genotype. PMID: 42798368
Additive effects of a two-amino-acid insertion and a single-amino-acid substitution in dihydropteroate synthase for the development of sulphonamide-resistant Neisseria meningitidis. PMID: 10832642
Mutation-Induced Conformational Remodeling of Dihydropteroate Synthase Governs Sulfonamide Resistance in Streptococcus pneumoniae. PMID: 42858848
Folate biosynthesis pseudogenes, PsifolP and PsifolK, and an O-sialoglycoprotein endopeptidase gene homolog in the phytoplasma genome. PMID: 14659042详情请咨询 abinScience 亚洲区官方子公司 —— 武汉艾必赛生物技术有限公司
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