Entry
Name
cycloeucalenol cycloisomerase;
cycloeucalenol---obtusifoliol isomerase;
cycloeucalenol lyase (cyclopropane-decyclizing)
Class
Isomerases;
Intramolecular lyases;
Intramolecular lyases (only sub-subclass identified to date)
BRITE hierarchy
Sysname
cycloeucalenol lyase (cyclopropane-ring opening)
Reaction(IUBMB)
cycloeucalenol = obtusifoliol [RN:
R03775 ]
Reaction(KEGG)
Substrate
Product
Comment
Opens the cyclopropane ring of a number of related 4alpha-methyl-9beta-19-cyclosterols, but not those with a 4beta-methyl group, with formation of an 8(9) double bond. Involved in the synthesis of plant sterols.
History
EC 5.5.1.9 created 1986
Pathway
ec01110 Biosynthesis of secondary metabolites
Orthology
K08246 cycloeucalenol cycloisomerase
Genes
CSAT : 104725142 104725553 104761032
BNA : 106368587 106388428 106388470 106395079
HSYR : 120140161 120172208
LJA : Lj6g3v0984700.1(Lj6g3v0984700.1)
AHF : 112708166 112772166 112783263
QSA : O6P43_022565 O6P43_030741
MSYL : 126599463 126627368
CMAX : 111490163 111495263
CMOS : 111431284 111456735
CPEP : 111782922 111802556
CILL : 122282764 122290375
SSPL : 121753221 121785358
SMIL : 131010494 131010544
CQI : 110704787 110707516 110709473
PSOM : 113274262 113278392 113281490 113316791
DOSA : Os11t0302500-01(Os11g0302500)
ATS : 109737590 109737950 109767330 109785596
TDC : 119286681 119295069 119318216 119324494
TAES : 123086881 123091100 123096100 123123551 123128693 123134769 123145824
PVIR : 120664159 120697355
EGU : 105038657 105043283 105051400
ZOF : 122004862 122022485 122036588 122053448
SMO : SELMODRAFT_135190 SELMODRAFT_83343
MPP : MICPUCDRAFT_60333(JGI:MicpuC2_60333)
EHX : EMIHUDRAFT_432676 EMIHUDRAFT_444727
» show all
Taxonomy
Reference
Authors
Heintz R, Benveniste P.
Title
Plant sterol metabolism. Enzymatic cleavage of the 9beta, 19beta-cyclopropane ring of cyclopropyl sterols in bramble tissue cultures.
Journal
J Biol Chem 249:4267-74 (1974)
Reference
2
Authors
Rahier, A., Schmitt, P. and Benveniste, P.
Title
7-oxo-24xi(28)-dihydrocycloeucalenol, a potent inhibitor of plant sterol biosynthesis.
Journal
Phytochemistry 21:1969-1974 (1982)
Other DBs
ExplorEnz - The Enzyme Database: 5.5.1.9
ExPASy - ENZYME nomenclature database: 5.5.1.9
BRENDA, the Enzyme Database: 5.5.1.9
LinkDB
All DBs