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_s000753980334680.1 abies_alba Aalbaalba5_s000753980334680.1
Aalbaalba5_s000753980334680.2 abies_alba Aalbaalba5_s000753980334680.2
Aalbaalba5_s000801480349180.1 abies_alba Aalbaalba5_s000801480349180.1
Aalbaalba5_s000842960360890.1 abies_alba Aalbaalba5_s000842960360890.1
Aalbaalba5_s000864810367080.1 abies_alba Aalbaalba5_s000864810367080.1
Aalbaalba5_s000903750377990.1 abies_alba Aalbaalba5_s000903750377990.1
Aalbaalba5_s000903750377990.2 abies_alba Aalbaalba5_s000903750377990.2
Aalbaalba5_s000931670385360.1 abies_alba Aalbaalba5_s000931670385360.1
Aalbaalba5_s000936000386680.1 abies_alba Aalbaalba5_s000936000386680.1
Aalbaalba5_s001029150411020.1 abies_alba Aalbaalba5_s001029150411020.1
Aalbaalba5_s001030150411270.1 abies_alba Aalbaalba5_s001030150411270.1
Aalbaalba5_s001030150411270.2 abies_alba Aalbaalba5_s001030150411270.2
Aalbaalba5_s001042530413990.1 abies_alba Aalbaalba5_s001042530413990.1
Aalbaalba5_s001042530414000.1 abies_alba Aalbaalba5_s001042530414000.1
Aalbaalba5_s001054930417330.1 abies_alba Aalbaalba5_s001054930417330.1
Aalbaalba5_s001073460422440.1 abies_alba Aalbaalba5_s001073460422440.1
Aalbaalba5_s001174610446640.1 abies_alba Aalbaalba5_s001174610446640.1
Aalbaalba5_s001290880472450.1 abies_alba Aalbaalba5_s001290880472450.1
Aalbaalba5_s001346440484130.1 abies_alba Aalbaalba5_s001346440484130.1
Aalbaalba5_s001547940524830.1 abies_alba Aalbaalba5_s001547940524830.1
Aalbaalba5_s001555350526290.1 abies_alba Aalbaalba5_s001555350526290.1
Aalbaalba5_s001555350526290.2 abies_alba Aalbaalba5_s001555350526290.2
Aalbaalba5_s001593610533450.1 abies_alba Aalbaalba5_s001593610533450.1
Aalbaalba5_s001640110542470.1 abies_alba Aalbaalba5_s001640110542470.1
Aalbaalba5_s001764260563650.1 abies_alba Aalbaalba5_s001764260563650.1
Aalbaalba5_s002030040605560.1 abies_alba Aalbaalba5_s002030040605560.1
Aalbaalba5_s002145560621770.1 abies_alba Aalbaalba5_s002145560621770.1
Aalbaalba5_s002206380630180.1 abies_alba Aalbaalba5_s002206380630180.1
Aalbaalba5_s002352850648500.1 abies_alba Aalbaalba5_s002352850648500.1
Aalbaalba5_s002352850648500.2 abies_alba Aalbaalba5_s002352850648500.2