相关实验视频
Updated: Mar 12, 2026

07:10
Taste Exam: A Brief and Validated Test
Published on: August 17, 2018
17.2K
乌玛米和苦味相互作用的计算分析:受体-连接体结合的正交
Sergey Shityakov1,2, Samson Olusegun Afolabi1, Mariia S Ashikhmina1
1Infochemistry Scientific Center, ITMO University 9 Lomonosova St. St. Petersburg 191002 Russia nosonovsky@infochemistry.ru.
RSC advances
|March 11, 2026
概括
苦味和乌玛米味觉连接体特别结合于各自的受体. 计算分析显示,乌玛米味道与苦味直角,形成一个3D味道数据空间.
科学领域:
- 计算化学是一种计算化学.
- 感官科学是一种感官科学.
- 分子生物学分子生物学
背景情况:
- 味觉感知涉及连接体和特定受体之间的相互作用.
- 苦味通过T2R受体进行介导,而乌玛米味主要通过T1R1受体进行介导.
- 了解连体受体相互作用对于破译味道机制至关重要.
研究的目的:
- 为了研究苦味 (flavan-3-ol) 和乌玛米 (glutamate) 味觉连接体与各自的受体 (T2R和T1R1) 在结合.
- 通过计算来确定由这些相互作用形成的味道数据空间的维度.
- 探索苦味与乌玛米味觉之间的关系.
主要方法:
- 用分子对接模拟来计算连接体和受体之间的结合能.
- 用分子动力学模拟来验证结合相互作用.
- 建立了一个亲和矩阵 (味觉矩阵) 来分析连接体-受体相互作用并计算数据空间维度.
主要成果:
- 苦配体对T2R受体表现出高度亲和力,而乌玛米配体对T1R1受体表现出高度亲和力,正如预期的那样.
- 发现T1R1和T2R受体的味道数据空间 (D) 的计算维度为3.
- 苦味被证明形成了一个二维数据空间,这表明乌玛米的味道与苦味是直角的.
结论:
- 这项研究提供了特定的苦味和乌玛米配体-受体相互作用的计算证据.
- 味道数据空间维度计算为了解味道感知提供了一个新的数学框架.
- 乌玛米口味与苦味的直角性表明不同的感官路径,并有助于复杂的味道感知.
相关概念视频
The Physiology of Taste
8.1K
The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the...
8.1K
Gustation
53.3K
Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
53.3K
Taste Buds and Receptors
5.7K
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
5.7K
The Two-State Receptor Model
3.4K
The two-state receptor model explains a drug's interaction with receptors, such as G protein-coupled receptors and ligand-gated ion channels, to induce or inhibit a biological response. When no natural ligands are present, a receptor exists in an equilibrium of inactive (Ri) and active (Ra) conformations. The inactive form does not produce a response, while the active form generates a basal effect known as constitutive activity.
The binding affinity of a drug determines its interaction with...
The binding affinity of a drug determines its interaction with...
3.4K
Ligand Binding Sites
15.6K
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
15.6K
Ligand Binding Sites
9.0K
9.0K

