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
Aalbaalba5_s000012230011180.1 abies_alba Aalbaalba5_s000012230011180.1
Aalbaalba5_s000043180034700.1 abies_alba Aalbaalba5_s000043180034700.1
Aalbaalba5_s000058300044450.1 abies_alba Aalbaalba5_s000058300044450.1
Aalbaalba5_s000058300044450.2 abies_alba Aalbaalba5_s000058300044450.2
Aalbaalba5_s000084450061020.1 abies_alba Aalbaalba5_s000084450061020.1
Aalbaalba5_s000093050066040.1 abies_alba Aalbaalba5_s000093050066040.1
Aalbaalba5_s000093050066040.2 abies_alba Aalbaalba5_s000093050066040.2
Aalbaalba5_s000110980076010.1 abies_alba Aalbaalba5_s000110980076010.1
Aalbaalba5_s000136240089190.1 abies_alba Aalbaalba5_s000136240089190.1
Aalbaalba5_s000199380121550.1 abies_alba Aalbaalba5_s000199380121550.1
Aalbaalba5_s000220030130990.1 abies_alba Aalbaalba5_s000220030130990.1
Aalbaalba5_s000253850146550.1 abies_alba Aalbaalba5_s000253850146550.1
Aalbaalba5_s000259620149020.1 abies_alba Aalbaalba5_s000259620149020.1
Aalbaalba5_s000259730149090.1 abies_alba Aalbaalba5_s000259730149090.1
Aalbaalba5_s000263920151170.1 abies_alba Aalbaalba5_s000263920151170.1
Aalbaalba5_s000312960171950.1 abies_alba Aalbaalba5_s000312960171950.1
Aalbaalba5_s000316840173870.1 abies_alba Aalbaalba5_s000316840173870.1
Aalbaalba5_s000316840173870.2 abies_alba Aalbaalba5_s000316840173870.2
Aalbaalba5_s000356730190580.1 abies_alba Aalbaalba5_s000356730190580.1
Aalbaalba5_s000446870229430.1 abies_alba Aalbaalba5_s000446870229430.1
Aalbaalba5_s000446870229430.2 abies_alba Aalbaalba5_s000446870229430.2
Aalbaalba5_s000446870229430.3 abies_alba Aalbaalba5_s000446870229430.3
Aalbaalba5_s000480190243020.1 abies_alba Aalbaalba5_s000480190243020.1
Aalbaalba5_s000547540268020.1 abies_alba Aalbaalba5_s000547540268020.1
Aalbaalba5_s000555790270850.1 abies_alba Aalbaalba5_s000555790270850.1
Aalbaalba5_s000620770292790.1 abies_alba Aalbaalba5_s000620770292790.1
Aalbaalba5_s000637730298960.1 abies_alba Aalbaalba5_s000637730298960.1
Aalbaalba5_s000660620306150.1 abies_alba Aalbaalba5_s000660620306150.1
Aalbaalba5_s000662500306650.1 abies_alba Aalbaalba5_s000662500306650.1
Aalbaalba5_s000715010322940.1 abies_alba Aalbaalba5_s000715010322940.1