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/FDFT190 SQE37 CAS726
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/SMT3593 SMO1/SMO2208 CPI118 CYP51G1179 FK18 HYD122 DWF7106 DWF55 DWF128
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 Basal angiosperms (2224)
Current lineage filter: Basal angiosperms. All species, family, module, and gene statistics below have been narrowed to this lineage.
Algae
Hits0
Bryophytes
Hits0
Lycophytes/Ferns
Hits0
Gymnosperms
Hits0
Basal angiosperms
Hits2224
Monocots
Hits0
Eudicots
Hits0
Species Distribution
Brasenia schreberi
Annona cherimola
Cinnamomum kanehirae
Cinnamomum camphora
Chloranthus sessilifolius
Amborella trichopoda
Piper nigrum
Aristolochia contorta
Nymphaea colorata
Liriodendron chinense
Lineage Summary
Basal angiosperms
2224
Module Gene List
Reset
GeneSpeciesProtein ID
brasenia_schreberi_Brsc14g0106.t6 brasenia_schreberi brasenia_schreberi_Brsc14g0106.t6
brasenia_schreberi_Brsc14g0230.t1 brasenia_schreberi brasenia_schreberi_Brsc14g0230.t1
brasenia_schreberi_Brsc14g0967.t1 brasenia_schreberi brasenia_schreberi_Brsc14g0967.t1
brasenia_schreberi_Brsc14g1565.t1 brasenia_schreberi brasenia_schreberi_Brsc14g1565.t1
brasenia_schreberi_Brsc14g1577.t2 brasenia_schreberi brasenia_schreberi_Brsc14g1577.t2
brasenia_schreberi_Brsc14g1782.t7 brasenia_schreberi brasenia_schreberi_Brsc14g1782.t7
brasenia_schreberi_Brsc15g1001.t1 brasenia_schreberi brasenia_schreberi_Brsc15g1001.t1
brasenia_schreberi_Brsc15g1120.t1 brasenia_schreberi brasenia_schreberi_Brsc15g1120.t1
brasenia_schreberi_Brsc15g1351.t2 brasenia_schreberi brasenia_schreberi_Brsc15g1351.t2
brasenia_schreberi_Brsc15g1495.t1 brasenia_schreberi brasenia_schreberi_Brsc15g1495.t1
brasenia_schreberi_Brsc15g1699.t1 brasenia_schreberi brasenia_schreberi_Brsc15g1699.t1
brasenia_schreberi_Brsc16g0008.t1 brasenia_schreberi brasenia_schreberi_Brsc16g0008.t1
brasenia_schreberi_Brsc16g0300.t1 brasenia_schreberi brasenia_schreberi_Brsc16g0300.t1
brasenia_schreberi_Brsc16g0967.t1 brasenia_schreberi brasenia_schreberi_Brsc16g0967.t1
brasenia_schreberi_Brsc16g1298.t5 brasenia_schreberi brasenia_schreberi_Brsc16g1298.t5
brasenia_schreberi_Brsc17g0741.t1 brasenia_schreberi brasenia_schreberi_Brsc17g0741.t1
brasenia_schreberi_Brsc17g1184.t1 brasenia_schreberi brasenia_schreberi_Brsc17g1184.t1
brasenia_schreberi_Brsc1879s05.t1 brasenia_schreberi brasenia_schreberi_Brsc1879s05.t1
brasenia_schreberi_Brsc18g0094.t1 brasenia_schreberi brasenia_schreberi_Brsc18g0094.t1
brasenia_schreberi_Brsc18g0373.t1 brasenia_schreberi brasenia_schreberi_Brsc18g0373.t1
brasenia_schreberi_Brsc18g0375.t1 brasenia_schreberi brasenia_schreberi_Brsc18g0375.t1
brasenia_schreberi_Brsc1919s3.t1 brasenia_schreberi brasenia_schreberi_Brsc1919s3.t1
brasenia_schreberi_Brsc19g0101.t1 brasenia_schreberi brasenia_schreberi_Brsc19g0101.t1
brasenia_schreberi_Brsc19g0151.t1 brasenia_schreberi brasenia_schreberi_Brsc19g0151.t1
brasenia_schreberi_Brsc19g0389.t3 brasenia_schreberi brasenia_schreberi_Brsc19g0389.t3
brasenia_schreberi_Brsc19g0668.t1 brasenia_schreberi brasenia_schreberi_Brsc19g0668.t1
brasenia_schreberi_Brsc19g0692.t2 brasenia_schreberi brasenia_schreberi_Brsc19g0692.t2
brasenia_schreberi_Brsc19g0859.t1 brasenia_schreberi brasenia_schreberi_Brsc19g0859.t1
brasenia_schreberi_Brsc19g0906.t2 brasenia_schreberi brasenia_schreberi_Brsc19g0906.t2
brasenia_schreberi_Brsc19g0914.t4 brasenia_schreberi brasenia_schreberi_Brsc19g0914.t4