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/FDFT128 SQE21 CAS480
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/SMT3237 SMO1/SMO287 CPI18 CYP51G188 FK13 HYD18 DWF757 DWF54 DWF129
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 Gymnosperms (1147)
Current lineage filter: Gymnosperms. All species, family, module, and gene statistics below have been narrowed to this lineage.
Algae
Hits0
Bryophytes
Hits0
Lycophytes/Ferns
Hits0
Gymnosperms
Hits1147
Basal angiosperms
Hits0
Monocots
Hits0
Eudicots
Hits0
Species Distribution
Pinus taeda
Abies alba
Ginkgo biloba
Gnetum montanum
Taxus chinensis
Welwitschia mirabilis
Lineage Summary
Gymnosperms
1147
Module Gene List
Reset
GeneSpeciesProtein ID
TchiHiC_scaffold_30221090.1 taxus_chinensis TchiHiC_scaffold_30221090.1
TchiHiC_scaffold_40224420.1 taxus_chinensis TchiHiC_scaffold_40224420.1
TchiHiC_scaffold_40225860.1 taxus_chinensis TchiHiC_scaffold_40225860.1
TchiHiC_scaffold_40229400.1 taxus_chinensis TchiHiC_scaffold_40229400.1
TchiHiC_scaffold_40229440.1 taxus_chinensis TchiHiC_scaffold_40229440.1
TchiHiC_scaffold_40229470.1 taxus_chinensis TchiHiC_scaffold_40229470.1
TchiHiC_scaffold_40229480.1 taxus_chinensis TchiHiC_scaffold_40229480.1
TchiHiC_scaffold_40229490.1 taxus_chinensis TchiHiC_scaffold_40229490.1
TchiHiC_scaffold_40248970.1 taxus_chinensis TchiHiC_scaffold_40248970.1
TchiHiC_scaffold_40248980.1 taxus_chinensis TchiHiC_scaffold_40248980.1
TchiHiC_scaffold_40251530.1 taxus_chinensis TchiHiC_scaffold_40251530.1
TchiHiC_scaffold_40251920.1 taxus_chinensis TchiHiC_scaffold_40251920.1
TchiHiC_scaffold_40252090.1 taxus_chinensis TchiHiC_scaffold_40252090.1
TchiHiC_scaffold_40252110.1 taxus_chinensis TchiHiC_scaffold_40252110.1
TchiHiC_scaffold_40252120.1 taxus_chinensis TchiHiC_scaffold_40252120.1
TchiHiC_scaffold_40256100.1 taxus_chinensis TchiHiC_scaffold_40256100.1
TchiHiC_scaffold_40262320.1 taxus_chinensis TchiHiC_scaffold_40262320.1
TchiHiC_scaffold_50268180.1 taxus_chinensis TchiHiC_scaffold_50268180.1
TchiHiC_scaffold_50268190.1 taxus_chinensis TchiHiC_scaffold_50268190.1
TchiHiC_scaffold_50270220.1 taxus_chinensis TchiHiC_scaffold_50270220.1
TchiHiC_scaffold_50271240.1 taxus_chinensis TchiHiC_scaffold_50271240.1
TchiHiC_scaffold_50271250.1 taxus_chinensis TchiHiC_scaffold_50271250.1
TchiHiC_scaffold_50276590.1 taxus_chinensis TchiHiC_scaffold_50276590.1
TchiHiC_scaffold_50282280.1 taxus_chinensis TchiHiC_scaffold_50282280.1
TchiHiC_scaffold_50282310.1 taxus_chinensis TchiHiC_scaffold_50282310.1
TchiHiC_scaffold_50285100.1 taxus_chinensis TchiHiC_scaffold_50285100.1
TchiHiC_scaffold_50286130.1 taxus_chinensis TchiHiC_scaffold_50286130.1
TchiHiC_scaffold_60300380.1 taxus_chinensis TchiHiC_scaffold_60300380.1
TchiHiC_scaffold_60300390.1 taxus_chinensis TchiHiC_scaffold_60300390.1
TchiHiC_scaffold_60300660.1 taxus_chinensis TchiHiC_scaffold_60300660.1