Entry
Name
magnesium dechelatase;
SGR (gene name);
SGRL (gene name);
Mg-dechelatase
Class
Lyases;
Other lyases;
Sole sub-subclass for lyases that do not belong in the other subclasses
BRITE hierarchy
Sysname
chlorophyll a magnesium lyase
Reaction(IUBMB)
(1) chlorophyll a + 2 H+ = pheophytin a + Mg2+ [RN:
R08584 ];
(2) chlorophyllide a + 2 H+ = pheophorbide a + Mg2+ [RN:
R09033 ]
Reaction(KEGG)
Substrate
Product
Comment
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).
History
EC 4.99.1.10 created 2017
Pathway
ec01110 Biosynthesis of secondary metabolites
Orthology
Genes
ATH : AT1G44000 AT4G11910 AT4G11911 AT4G22920(NYE1)
ALY : 110227542 9303816 9310800 9330036
CRB : 17880941 17882664 17898091
CSAT : 104707485 104707486 104718013 104718062 104718066 104722741 104731201 104737198 104737199 104742156 104757939 104777551
EUS : EUTSA_v10011724mg EUTSA_v10025991mg EUTSA_v10028881mg EUTSA_v10029210mg
BRP : 103834271 103847714 103858612 103860469(NYE1) 103861346
BNA : 106368456 106375753 106375754 106379154 106388569 106405908 106411225 106416069 106438786 106440469 111197916
BOE : 106296745 106306852 106311628 106325928 106332354 106332703
RSZ : 108810996 108820491 108820492 108820494 108843007 108844784 108846175 108849663 108849678
THJ : 104801615 104813011 104814157
CPAP : 110817458 110818153
CIC : CICLE_v10002160mg CICLE_v10021651mg
MINC : 123203048 123204564 123211317 123229230
GRA : 105789173 105792158 105797117
GHI : 107910395 107915295 107926912 107929203 107929996 107951459 107963689
GAB : 108468973 108475537 108482352
HSYR : 120117375 120139976 120142869 120163535 120166864 120191113 120203617 120218561
DZI : 111277574 111290791 111305955 111311217
GMX : 100780387 100783248 100792871 100795181 732541(SGR2) 732647(SGR1)
GSJ : 114377595 114391897 114393255 114410371 114415466 114424266
PVU : PHAVU_002G153100g PHAVU_009G132100g
VUM : 124835055 124835056 124836970
CCAJ : 109800609 109804690
APRC : 113851144 113853161 113869257
TPRA : 123908863 123909368
VVO : 131632585 131652420 131655683
ADU : 107460607 107488169 107489309
AIP : 107605991 107618299 107642980
AHF : 112706005 112722274 112749554 112764929 112800846 112805413
LANG : 109331955 109331956 109332267 109344325 109348932 109362567
PCIN : 129294262 129311495
QSA : O6P43_015101 O6P43_024250
PMUM : 103337376 103342717
PAVI : 110747541 110763612 110769037
PDUL : 117628671 117637760
MDM : 103444765 114823090 114824730
MSYL : 126619455 126620934 126625108
PXB : 103938096 103938102 103952867 103956540
CSAV : 115716985 115723236
MCHA : 111011794 111023234
CMAX : 111486879 111489764 111491161
CMOS : 111445411 111459528 111461394
CPEP : 111795404 111805902 111809060
MEAN : 126677077 126678177
HBR : 110640007 110646425 110649907 110669045
MESC : 110603639 110606316 110621067
POP : 18099608 7465829 7466435 7478087
PEU : 105112324 105128975 105132188
PALZ : 118028540 118029299 118033782 118033793
JRE : 108980093 108990686 108990827 109010899
CILL : 122280494 122290255 122296301 122298593
CAVE : 132175288 132184735
TWL : 119980726 119996870 119997914 120017095
VRI : 117905826 117906021 117927199
SLY : 101252980 101258237 778212(SGR1)
SPEN : 107006840 107018015 107027953
SOT : 102586926 102597935 102599319
SSTN : 125842119 125854231 125863168
SDUL : 129889350 129889956 129904044
CANN : 107849956 107866321 107867750
LBB : 132603860 132627192 132634993
NTA : 107763781 107780670 107804241 107817134 107818616 107819767 107824323
NSY : 104224916 104245095 104248440
NTO : 104097631 104101412 104101414 104117176
NAU : 109222385 109229634 109235637 109238401 109240001
INI : 109151097 109153247 109183467
ITR : 116018990 116026596 116027337
SIND : 105157242 105159434 105180060
OEU : 111368827 111379051 111397487 111407518
SSPL : 121769405 121772425 121779761 121785958 121788883 121793744 121800140 121810882
SMIL : 130994634 130994644 131011797 131026493
SHIS : 125193596 125205617 125217062 125222570
APAN : 127243656 127246701 127250678
HAN : 110864360 110864361 110921816 110941208
ECAD : 122578174 122578492 122582843
CCAV : 112502612 112521276 112527422
DCR : 108192640 108205944 108206688 108216602
CSIN : 114262638 114274922 114288037 114288212 114303382 114303859
AEW : 130753041 130758024 130758687 130765283 130776665 130793708
CQI : 110685908 110702530 110719427 110725760
ATRI : 130800522 130803937 130811507
NNU : 104596219 104599529 104608345
MING : 122062554 122094258
TSS : 122665171 122667503 122668442
PSOM : 113272243 113275025 113302415 113305294 113346460 113356451
TDC : 119302596 119311272 119357340 119366651
TAES : 123055433 123104541 123112817 123122300 123175465 123191256
LPER : 127302582 127345910
LRD : 124654598 124661652 124665453
ZMA : 100192013 606425 606426
MFLO : 136493218 136493296 136497396 136542182 136552184
SITA : 101765893 106804238
PVIR : 120642225 120661350 120683068 120685287
PHAI : 112881901 112901722
MUS : 103971055 103973357 103979345 103993530
ZOF : 121983394 121983395 122039859 122042644 122047150 122049295
MSIN : 131233398 131236561 131249054
NCOL : 116248984 116260051
SMO : SELMODRAFT_15573 SELMODRAFT_15575
PPP : 112273408 112279759 112286188 112294044
OLU : OSTLU_27130 OSTLU_29779
» show all
Taxonomy
Reference
Authors
Tang L, Okazawa A, Fukusaki E, Kobayashi A
Title
Removal of magnesium by Mg-dechelatase is a major step in the chlorophyll-degrading pathway in Ginkgo biloba in the process of autumnal tints.
Journal
Reference
2
Authors
Costa MA, Civello PM, Chaves AR, Martinez GA.
Title
Characterization of Mg-dechelatase activity obtained from Fragaria x ananassa fruit.
Journal
Plant Physiol Biochem 40:111-118 (2002)
Reference
Authors
Wang T, Quisenberry SS, Ni X, Tolmay V
Title
Enzymatic chlorophyll degradation in wheat near-isogenic lines elicited by cereal aphid (Homoptera: Aphididae) feeding.
Journal
Reference
Authors
Suzuki T, Kunieda T, Murai F, Morioka S, Shioi Y
Title
Mg-dechelation activity in radish cotyledons with artificial and native substrates, Mg-chlorophyllin a and chlorophyllide a.
Journal
Reference
5
Authors
Kunieda T, Amano T, Shioi Y.
Title
Search for chlorophyll degradation enzyme, Mg-dechelatase, from extracts of Chenopodium album with native and artificial substrates.
Journal
Plant Sci 169:177-183 (2005)
Reference
Authors
Shimoda Y, Ito H, Tanaka A
Title
Arabidopsis STAY-GREEN, Mendel's Green Cotyledon Gene, Encodes Magnesium-Dechelatase.
Journal
Sequence
Other DBs
ExPASy - ENZYME nomenclature database: 4.99.1.10
LinkDB
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