1.
Plant Physiol
; 61(4): 601-5, 1978 Apr.
Article
in English
| MEDLINE
| ID: mdl-16660345
ABSTRACT
Light and dark modulation experiments with pea (Pisum sativum L.) chloroplast stromal fractions pretreated with dithiothreitol (to reduce protein disulfide bonds) or with 5,5'-dithiobis(2-nitrobenzoic acid) (DTNB) (to block sulfhydryl groups) suggest that light modulation involves thiol-disulfide exchange on the modulatable stromal enzyme protein. Light-dependent reduction of DTNB involves a photosynthetic electron transport chain component located on the reducing side of photosystem I prior to ferredoxin; DTNB may be acting as a light effect mediator substitute. The thylakoid-bound light effect mediator system, then, in its light-activated reduced form probably catalyzes thiol-disulfide exchange reactions on stromal enzymes.
2.
FEBS Lett
; 76(1): 64-6, 1977 Apr 01.
Article
in English
| MEDLINE
| ID: mdl-852605