从d-葡萄糖和d-银糖制成完全可降解的糖基聚合物
Atanu Bhaumik1, Gregory I Peterson1, Cheol Kang1
1Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea.
Journal of the American Chemical Society
|July 25, 2019
概括
使用受控级联聚合物合成新的基于葡萄糖和银的聚合物. 这些可降解的新型糖聚合物在酸性条件下可以完全分解.
科学领域:
- 聚合物化学
- 碳水化合物化学
- 可持续的材料
背景情况:
- 开发可再生资源的新型聚合物对于可持续化学至关重要.
- 糖衍生单体为传统石化原料提供了可生物降解的替代品.
- 需要控制的聚合技术来创建明确的聚合物架构.
研究的目的:
- 通过将开环糖纳入聚合物骨干来合成新型聚合物.
- 调查级聚合的控制性质和生活特征.
- 评估合成糖基聚合物的可降解性.
主要方法:
- 含有内循环和终端的葡萄糖和银衍生单体的级联聚合.
- 聚合物分子重量和分散性的特征.
- 区块共聚物的合成,以证明活的聚合.
- 在酸性条件下的聚合物降解的评估.
主要成果:
- 实现了良好控制的聚合,由线性分子量增加和狭窄的分散度证明.
- 通过区块共聚合物合成证明了活体聚合特性.
- 合成的聚合物成功地将环开放的糖单元纳入脊柱.
- 在酸性条件下实现了快速和完整的聚合物降解为小分子.
结论:
- 级联聚合提供了一种可控的方法来合成基于糖的新型聚合物.
- 由此产生的聚合物具有可调节的特性,并且完全可降解,提供可持续的材料解决方案.
- 这些发现为开发可再生碳水化合物资源的先进生物降解材料开辟了道路.
相关概念视频
Polymers
40.5K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
40.5K
Intracellular Signaling Cascades
53.3K
Once a ligand binds to a receptor, the signal is transmitted through the membrane and into the cytoplasm. The continuation of a signal in this manner is called signal transduction. Signal transduction only occurs with cell-surface receptors, which cannot interact with most components of the cell, such as DNA. Only internal receptors can interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the...
53.3K
Phloem and Sugar Transport
39.8K
Like many living organisms, plants have tissues that specialize in specific plant functions. For example, shoots are well adapted to rapid growth, while roots are structured to acquire resources efficiently. However, sugar production is primarily restricted to the photosynthetic cells that reside in the leaves of angiosperm plants. Sugar and other resources are transported from photosynthetic tissues to other specialized tissues by a process called translocation.
39.8K
Rab Cascades
3.5K
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
3.5K
Regulated Protein Degradation
8.8K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.8K
Proteins: From Genes to Degradation
14.2K
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
Transcription is the synthesis of RNA...
Transcription is the synthesis of RNA...
14.2K


