搜尋結果
- 蛋白質
- ㄉㄢˋ ㄅㄞˊ ㄓˊ
- 釋義：
- 生物體內一種大分子，由多種胺基酸聚合而成；為生物體生存、生長、繁殖等功能所不可或缺。
A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Protein anabolism is the process by which proteins are formed from amino acids. It relies on five processes: amino acid synthesis, transcription, translation, post translational modifications, and protein folding. Proteins are made from amino acids. In humans, some amino acids can be synthesized using already existing intermediates.
Structure of a typical L -alpha-amino acid in the "neutral" form. Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. [1] Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins. [2] Only these 22 appear in the genetic code of life.
Active adenosine monophosphate-activated protein kinase (AMPK, left) and inactive AMPK (right). AMPK is a protein complex composed of three subunits: α (green), β (brown), and γ (blue). When bound to adenosine monophosphate (AMP), AMPK is activated and the active loop is protected against phosphatases. When bound to adenosine triphosphate ...
- AMP-activated protein kinase
- 2.7.11.1
Streptavidin / ˌ s t r ɛ p ˈ t æ v ɪ d ɪ n / is a 52 kDa protein (tetramer) purified from the bacterium Streptomyces avidinii.Streptavidin homo-tetramers have an extraordinarily high affinity for biotin (also known as vitamin B7 or vitamin H). With a dissociation constant (K d) on the order of ≈10 −14 mol/L, the binding of biotin to streptavidin is one of the strongest non-covalent ...
Structure. The NDUFS3 gene encodes a protein subunit consisting of 263 amino acids. This protein is synthesized in the cytoplasm and then transported to the mitochondria via a signal peptide. Two mutations that occur in its highly conserved C-terminal region, T145I and R199W, are causally linked to Leigh syndrome and optic atrophy.
Fusion protein. A chimeric protein including two subunits and a linker protein synthesized via recombinant fusion technology. Fusion proteins or chimeric (kī-ˈmir-ik) proteins (literally, made of parts from different sources) are proteins created through the joining of two or more genes that originally coded for separate proteins.
