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_60300780.1 taxus_chinensis TchiHiC_scaffold_60300780.1
TchiHiC_scaffold_60301250.1 taxus_chinensis TchiHiC_scaffold_60301250.1
TchiHiC_scaffold_60301270.1 taxus_chinensis TchiHiC_scaffold_60301270.1
TchiHiC_scaffold_60301300.1 taxus_chinensis TchiHiC_scaffold_60301300.1
TchiHiC_scaffold_60301310.1 taxus_chinensis TchiHiC_scaffold_60301310.1
TchiHiC_scaffold_60301320.1 taxus_chinensis TchiHiC_scaffold_60301320.1
TchiHiC_scaffold_60301630.1 taxus_chinensis TchiHiC_scaffold_60301630.1
TchiHiC_scaffold_60301670.1 taxus_chinensis TchiHiC_scaffold_60301670.1
TchiHiC_scaffold_60301920.1 taxus_chinensis TchiHiC_scaffold_60301920.1
TchiHiC_scaffold_60304880.1 taxus_chinensis TchiHiC_scaffold_60304880.1
TchiHiC_scaffold_60304890.1 taxus_chinensis TchiHiC_scaffold_60304890.1
TchiHiC_scaffold_60304900.1 taxus_chinensis TchiHiC_scaffold_60304900.1
TchiHiC_scaffold_60306590.1 taxus_chinensis TchiHiC_scaffold_60306590.1
TchiHiC_scaffold_60306600.1 taxus_chinensis TchiHiC_scaffold_60306600.1
TchiHiC_scaffold_60306620.1 taxus_chinensis TchiHiC_scaffold_60306620.1
TchiHiC_scaffold_60306630.1 taxus_chinensis TchiHiC_scaffold_60306630.1
TchiHiC_scaffold_60306640.1 taxus_chinensis TchiHiC_scaffold_60306640.1
TchiHiC_scaffold_60306650.1 taxus_chinensis TchiHiC_scaffold_60306650.1
TchiHiC_scaffold_60306660.1 taxus_chinensis TchiHiC_scaffold_60306660.1
TchiHiC_scaffold_60306670.1 taxus_chinensis TchiHiC_scaffold_60306670.1
TchiHiC_scaffold_60308540.1 taxus_chinensis TchiHiC_scaffold_60308540.1
TchiHiC_scaffold_60315280.1 taxus_chinensis TchiHiC_scaffold_60315280.1
TchiHiC_scaffold_60316220.1 taxus_chinensis TchiHiC_scaffold_60316220.1
TchiHiC_scaffold_60316690.1 taxus_chinensis TchiHiC_scaffold_60316690.1
TchiHiC_scaffold_60319400.1 taxus_chinensis TchiHiC_scaffold_60319400.1
TchiHiC_scaffold_60321160.1 taxus_chinensis TchiHiC_scaffold_60321160.1
TchiHiC_scaffold_60321190.1 taxus_chinensis TchiHiC_scaffold_60321190.1
TchiHiC_scaffold_60322780.1 taxus_chinensis TchiHiC_scaffold_60322780.1
TchiHiC_scaffold_70335400.1 taxus_chinensis TchiHiC_scaffold_70335400.1
TchiHiC_scaffold_70338380.1 taxus_chinensis TchiHiC_scaffold_70338380.1