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_110107400.1 taxus_chinensis TchiHiC_scaffold_110107400.1
TchiHiC_scaffold_110110710.1 taxus_chinensis TchiHiC_scaffold_110110710.1
TchiHiC_scaffold_110110720.1 taxus_chinensis TchiHiC_scaffold_110110720.1
TchiHiC_scaffold_110110800.1 taxus_chinensis TchiHiC_scaffold_110110800.1
TchiHiC_scaffold_110110820.1 taxus_chinensis TchiHiC_scaffold_110110820.1
TchiHiC_scaffold_110110850.1 taxus_chinensis TchiHiC_scaffold_110110850.1
TchiHiC_scaffold_110110860.1 taxus_chinensis TchiHiC_scaffold_110110860.1
TchiHiC_scaffold_110110870.1 taxus_chinensis TchiHiC_scaffold_110110870.1
TchiHiC_scaffold_110110880.1 taxus_chinensis TchiHiC_scaffold_110110880.1
TchiHiC_scaffold_110110900.1 taxus_chinensis TchiHiC_scaffold_110110900.1
TchiHiC_scaffold_110110940.1 taxus_chinensis TchiHiC_scaffold_110110940.1
TchiHiC_scaffold_120134130.1 taxus_chinensis TchiHiC_scaffold_120134130.1
TchiHiC_scaffold_120139200.1 taxus_chinensis TchiHiC_scaffold_120139200.1
TchiHiC_scaffold_120140500.1 taxus_chinensis TchiHiC_scaffold_120140500.1
TchiHiC_scaffold_120144690.1 taxus_chinensis TchiHiC_scaffold_120144690.1
TchiHiC_scaffold_120145980.1 taxus_chinensis TchiHiC_scaffold_120145980.1
TchiHiC_scaffold_120147030.1 taxus_chinensis TchiHiC_scaffold_120147030.1
TchiHiC_scaffold_120148810.1 taxus_chinensis TchiHiC_scaffold_120148810.1
TchiHiC_scaffold_120151440.1 taxus_chinensis TchiHiC_scaffold_120151440.1
TchiHiC_scaffold_120151570.1 taxus_chinensis TchiHiC_scaffold_120151570.1
TchiHiC_scaffold_120166690.1 taxus_chinensis TchiHiC_scaffold_120166690.1
TchiHiC_scaffold_120166700.1 taxus_chinensis TchiHiC_scaffold_120166700.1
TchiHiC_scaffold_20179480.1 taxus_chinensis TchiHiC_scaffold_20179480.1
TchiHiC_scaffold_20180340.1 taxus_chinensis TchiHiC_scaffold_20180340.1
TchiHiC_scaffold_20191350.1 taxus_chinensis TchiHiC_scaffold_20191350.1
TchiHiC_scaffold_20191420.1 taxus_chinensis TchiHiC_scaffold_20191420.1
TchiHiC_scaffold_30211120.1 taxus_chinensis TchiHiC_scaffold_30211120.1
TchiHiC_scaffold_30211450.1 taxus_chinensis TchiHiC_scaffold_30211450.1
TchiHiC_scaffold_30213690.1 taxus_chinensis TchiHiC_scaffold_30213690.1
TchiHiC_scaffold_30220980.1 taxus_chinensis TchiHiC_scaffold_30220980.1