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_s001825600573570.1 abies_alba Aalbaalba5_s001825600573570.1
Aalbaalba5_s001855990578620.1 abies_alba Aalbaalba5_s001855990578620.1
Aalbaalba5_s001901740586130.1 abies_alba Aalbaalba5_s001901740586130.1
Aalbaalba5_s002026800605120.1 abies_alba Aalbaalba5_s002026800605120.1
Aalbaalba5_s002132010619680.1 abies_alba Aalbaalba5_s002132010619680.1
Aalbaalba5_s002187210627650.1 abies_alba Aalbaalba5_s002187210627650.1
Aalbaalba5_s002218670631790.1 abies_alba Aalbaalba5_s002218670631790.1
Aalbaalba5_s002282030639600.1 abies_alba Aalbaalba5_s002282030639600.1
Aalbaalba5_s002307180642710.1 abies_alba Aalbaalba5_s002307180642710.1
Aalbaalba5_s002740020691480.1 abies_alba Aalbaalba5_s002740020691480.1
Aalbaalba5_s003006380715770.1 abies_alba Aalbaalba5_s003006380715770.1
Aalbaalba5_s003159510728570.1 abies_alba Aalbaalba5_s003159510728570.1
Aalbaalba5_s003477120751490.1 abies_alba Aalbaalba5_s003477120751490.1
Aalbaalba5_s003792860771190.1 abies_alba Aalbaalba5_s003792860771190.1
Aalbaalba5_s003991130782070.1 abies_alba Aalbaalba5_s003991130782070.1
Aalbaalba5_s004005310782920.1 abies_alba Aalbaalba5_s004005310782920.1
Aalbaalba5_s004052310785680.1 abies_alba Aalbaalba5_s004052310785680.1
Aalbaalba5_s004488560807650.1 abies_alba Aalbaalba5_s004488560807650.1
Aalbaalba5_s005084220832730.1 abies_alba Aalbaalba5_s005084220832730.1
Aalbaalba5_s005482860846160.1 abies_alba Aalbaalba5_s005482860846160.1
Aalbaalba5_s005727620853010.1 abies_alba Aalbaalba5_s005727620853010.1
Aalbaalba5_s006216360864610.1 abies_alba Aalbaalba5_s006216360864610.1
Aalbaalba5_s006569240871730.1 abies_alba Aalbaalba5_s006569240871730.1
Aalbaalba5_s007057340880600.1 abies_alba Aalbaalba5_s007057340880600.1
Aalbaalba5_s007533990887910.1 abies_alba Aalbaalba5_s007533990887910.1
Aalbaalba5_s007913310892560.1 abies_alba Aalbaalba5_s007913310892560.1
Aalbaalba5_s008631560900700.1 abies_alba Aalbaalba5_s008631560900700.1
Aalbaalba5_s017353610938470.1 abies_alba Aalbaalba5_s017353610938470.1
Aalbaalba5_s019992070941510.1 abies_alba Aalbaalba5_s019992070941510.1
Gbil01G0001800.1 ginkgo_biloba Gbil01G0001800.1