来自细菌的双功能POGases包括更广泛的O-glycanase和粘附活性
Linjiao Zhou1, Uriel Ortega-Rodriguez1, Matthew J Flores1
1Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA.
Nature communications
|February 25, 2025
概括
研究人员发现了Peptide:O-Glycosidase (POGase),这是一种新型酶,可以从糖蛋白中释放化O-甘氨酸. 这一突破有助于O-glycomics,生物治疗质量控制和医学研究.
科学领域:
- 生物化学 生物化学
- 葡萄糖生物学 葡萄糖生物学
- 微生物学 微生物学
背景情况:
- 粘素类型的O-甘氨酸在生物过程和生物治疗质量中至关重要.
- 细菌与宿主细胞的相互作用涉及用于殖民和入侵的甘氨酸-乳氨酸结合.
- 目前的方法缺乏释放化O-甘氨酸的酶,阻碍了O-甘氨酸结构功能研究.
研究的目的:
- 识别和描述能够从糖蛋白中释放化O-甘氨酸的新型酶.
- 研究这些新发现的酶的酶活性和基质特异性.
- 探索这些酶在O-glycomics,生物治疗和医学中的潜在应用.
主要方法:
- 生物信息识别的内-α-N-乙糖氨酸胺基酶 (GH101家族).
- 一个代表性的POGase ortholog.的生物化学表征.
- 对酶活性和甘氨酸结合的基因和域函数的分析.
主要成果:
- 的鉴定:具有广泛基质特异性的O-糖化酶 (POGase) 酶.
- 一种POGase的表征,该POGase有效地从各种基质中释放化O-甘氨酸.
- 在Actinomycetota POGases中发现了独特的基因图案,并确定了负责糖结合的额外域.
- 在POGases中展示双O-甘酶和粘附活性.
结论:
- POGases代表了一类具有显著潜力的新型O-糖酶 (GH101).
- 这些酶可以释放化O-甘氨酸,克服了O-甘氨酸研究的一个主要局限性.
- 双重功能的POGases为O-glycomics,生物治疗评估和医疗/微生物学应用提供了新的途径.
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