1.
Q Rev Biophys
; 33(1): 67-108, 2000 Feb.
Artículo
en Inglés
| MEDLINE
| ID: mdl-11075389
Asunto(s)
Cloroplastos/enzimología , Cloroplastos/efectos de la radiación , Luz , Oxidorreductasas/química , Oxidorreductasas/metabolismo , Proteínas del Complejo del Centro de Reacción Fotosintética/metabolismo , Secuencia de Aminoácidos , Ferredoxinas/metabolismo , Fructosa-Bifosfatasa/metabolismo , Proteínas Hierro-Azufre , Malato Deshidrogenasa/metabolismo , Modelos Moleculares , Datos de Secuencia Molecular , Proteínas del Complejo del Centro de Reacción Fotosintética/química , Relación Estructura-Actividad , Tiorredoxinas/química , Tiorredoxinas/metabolismo
2.
Science
; 287(5453): 655-8, 2000 Jan 28.
Artículo
en Inglés
| MEDLINE
| ID: mdl-10649999
RESUMEN
Light generates reducing equivalents in chloroplasts that are used not only for carbon reduction, but also for the regulation of the activity of chloroplast enzymes by reduction of regulatory disulfides via the ferredoxin:thioredoxin reductase (FTR) system. FTR, the key electron/thiol transducer enzyme in this pathway, is unique in that it can reduce disulfides by an iron-sulfur cluster, a property that is explained by the tight contact of its active-site disulfide and the iron-sulfur center. The thin, flat FTR molecule makes the two-electron reduction possible by forming on one side a mixed disulfide with thioredoxin and by providing on the opposite side access to ferredoxin for delivering electrons.