PlantSME Plant secondary metabolism enzyme database
Steroid portable pathway

Steroid portable pathway

Category：Steroid pathway

Steroid pathway definition imported from the 2026-05-17 portable BLAST/HMM package.

Representative Steroid Reaction Route
Squalene to phytosterols and brassinosteroid branch. The steroid route starts from triterpenoid precursors, proceeds through squalene, 2,3-oxidosqualene, and cycloartenol, and then branches toward phytosterols and brassinosteroids; long branches are shown as curated modules.
3 curated steps/modules
Sterol Scaffold Formation
01
Substrate
Farnesyl diphosphate
C15H28O7P2
C15 prenyl-OPP
Squalene synthesis, epoxidation, and cyclization
SQS/FDFT190 SQE37 CAS726
Product
Cycloartenol
C30H50O
tetracyclic sterol nucleus with cyclopropyl side
SQS/SQE/CAS convert FPP-derived linear triterpenes into the plant sterol core.
02
Substrate
Cycloartenol-series intermediates
C28-C30 sterols
tetracyclic sterol nucleus
Demethylation, reduction, and side-chain remodeling
SMT1/SMT2/SMT3593 SMO1/SMO2208 CPI118 CYP51G1179 FK18 HYD122 DWF7106 DWF55 DWF128
Product
Phytosterols
C28H48O / C29H50O
sterol nucleus-C8/C9 side chain
This segment converts cycloartenol-series intermediates into phytosterol pools such as sitosterol and campesterol.
Brassinosteroid Branch
Lineage Distribution
Assignments under this module are distributed across the following plant lineages.
All Lineages Basal angiosperms (2224)
Current lineage filter: Basal angiosperms. All species, family, module, and gene statistics below have been narrowed to this lineage.
Algae
Hits0
Bryophytes
Hits0
Lycophytes/Ferns
Hits0
Gymnosperms
Hits0
Basal angiosperms
Hits2224
Monocots
Hits0
Eudicots
Hits0
Species Distribution
Brasenia schreberi
Annona cherimola
Cinnamomum kanehirae
Cinnamomum camphora
Chloranthus sessilifolius
Amborella trichopoda
Piper nigrum
Aristolochia contorta
Nymphaea colorata
Liriodendron chinense
Lineage Summary
Basal angiosperms
2224
Module Gene List
Reset
GeneSpeciesProtein ID
warburgia_ugandensis_GWHPDQZE006750 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE006750
warburgia_ugandensis_GWHPDQZE006752 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE006752
warburgia_ugandensis_GWHPDQZE006755 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE006755
warburgia_ugandensis_GWHPDQZE006758 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE006758
warburgia_ugandensis_GWHPDQZE006815 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE006815
warburgia_ugandensis_GWHPDQZE007506 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE007506
warburgia_ugandensis_GWHPDQZE008652 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE008652
warburgia_ugandensis_GWHPDQZE008716 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE008716
warburgia_ugandensis_GWHPDQZE008866 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE008866
warburgia_ugandensis_GWHPDQZE009182 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009182
warburgia_ugandensis_GWHPDQZE009257 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009257
warburgia_ugandensis_GWHPDQZE009299 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009299
warburgia_ugandensis_GWHPDQZE009300 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009300
warburgia_ugandensis_GWHPDQZE009301 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009301
warburgia_ugandensis_GWHPDQZE009302 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009302
warburgia_ugandensis_GWHPDQZE009303 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009303
warburgia_ugandensis_GWHPDQZE009305 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009305
warburgia_ugandensis_GWHPDQZE009307 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009307
warburgia_ugandensis_GWHPDQZE009601 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009601
warburgia_ugandensis_GWHPDQZE009602 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009602
warburgia_ugandensis_GWHPDQZE009637 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE009637
warburgia_ugandensis_GWHPDQZE011149 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE011149
warburgia_ugandensis_GWHPDQZE011462 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE011462
warburgia_ugandensis_GWHPDQZE011463 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE011463
warburgia_ugandensis_GWHPDQZE011970 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE011970
warburgia_ugandensis_GWHPDQZE012664 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE012664
warburgia_ugandensis_GWHPDQZE013419 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE013419
warburgia_ugandensis_GWHPDQZE013441 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE013441
warburgia_ugandensis_GWHPDQZE013442 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE013442
warburgia_ugandensis_GWHPDQZE013443 warburgia_ugandensis warburgia_ugandensis_GWHPDQZE013443