FeMo:CO

Thomas Spatzal1, Kathryn A Perez2, Oliver Einsle3

  • 1Howard Hughes Medical Institute and Division of Chemistry and Chemical Engineering, MailCode 114-96, California Institute of Technology, Pasadena, CA 91125, USA. spatzal@caltech.edu dcrees@caltech.edu.

Science (New York, N.Y.)
|September 27, 2014
PubMed
まとめ

炭素一酸化物 (CO) は,鉄-モリブデン共同因子 (FeMo共同因子) に結合することによって,窒素酶を逆転的に抑制する. この構造的研究は,CO結合が重要な,可逆的なコファクター再編成を引き起こし,反応性のある鉄種を発見することを明らかにしています.

関連する概念動画

Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
7.3K
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

1.8K
Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

2.3K
Cofactors and Coenzymes01:24

Cofactors and Coenzymes

Enzymes are proteins made of amino acids. The functional group of each constituent amino acid catalyzes a wide variety of chemical reactions via ionic interactions or acid-base reactions. However, amino acids cannot catalyze oxidation-reduction and group transfer reactions and need to be aided by non-protein components called cofactors. Cofactors are also referred to as the chemical teeth of an enzyme.
Cofactors can be metallic ions or organic molecules called coenzymes. These types of helper...
8.4K
Cofactors and Coenzymes01:27

Cofactors and Coenzymes

Enzymes require additional components for proper function. There are two such classes of molecules: cofactors and coenzymes. Cofactors are metallic ions and coenzymes are non-protein organic molecules. Both of these types of helper molecule can be tightly bound to the enzyme or bound only when the substrate binds.
78.1K
Cofactors and Coenzymes01:27

Cofactors and Coenzymes

7.0K