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Your query returned 1 entry. Printable version
EC | 4.99.1.10 | ||||||||||||
Accepted name: | magnesium dechelatase | ||||||||||||
Reaction: | (1) chlorophyll a + 2 H+ = pheophytin a + Mg2+ (2) chlorophyllide a + 2 H+ = pheophorbide a + Mg2+ |
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For diagram of chlorophyll catabolism, click here | |||||||||||||
Other name(s): | SGR (gene name); SGRL (gene name); Mg-dechelatase | ||||||||||||
Systematic name: | chlorophyll a magnesium lyase | ||||||||||||
Comments: | Inhibited by Ca2+, Mg2+ and especially Hg2+. SGR has very low activity with chlorophyllide a and none with chlorophyll b. It acts on chlorophyll a both in its free form and in protein complex. SGRL, on the other hand, is more active with chlorophyllide a than with chlorophyll a. The magnesium formed is scavenged by MCS (metal-chelating substance). | ||||||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||||||||
References: |
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