CHANGES OF S-ADENOSYL-L-METHIONINE - MAGNESIUM PROTOPORPHYRIN-IX METHYLTRANSFERASE ACTIVITY IN WHEAT AFTER TREATMENT WITH 5-AMINOLEVULINIC ACID

Authors
YARONSKAYA EB SHALYGO NV RASSADINA VV AVERINA NG
Citation
Eb. Yaronskaya et al., CHANGES OF S-ADENOSYL-L-METHIONINE - MAGNESIUM PROTOPORPHYRIN-IX METHYLTRANSFERASE ACTIVITY IN WHEAT AFTER TREATMENT WITH 5-AMINOLEVULINIC ACID, Photosynthetica, 29(2), 1993, pp. 243-247
Citations number
17
Categorie Soggetti
Plant Sciences
Journal title
Photosynthetica → ACNP
ISSN journal
03003604
Volume
29
Issue
2
Year of publication
1993
Pages
243 - 247
Database
ISI
SICI code
0300-3604(1993)29:2<243:COS-MP>2.0.ZU;2-A
Abstract
Following treatment with 5-aminolevulinic acid the activity of S-adeno syl-L-methionine:magnesium protoporphyrin IX methyltransferase (EC 2.1 .1.11) in wheat leaves decreased, whereas monomethyl ester magnesium p rotoporphyrin IX and protochlorophyllide accumulated. The inactivation of the enzyme was the result of a cessation of the enzyme-product com plex dissociation because of the limited number of porphyrin-binding s ites on the structural carrier.