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
cinnamomum_camphora_GWHPBGXC001125 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC001125
cinnamomum_camphora_GWHPBGXC001289 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC001289
cinnamomum_camphora_GWHPBGXC003324 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC003324
cinnamomum_camphora_GWHPBGXC003670 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC003670
cinnamomum_camphora_GWHPBGXC004214 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004214
cinnamomum_camphora_GWHPBGXC004290 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004290
cinnamomum_camphora_GWHPBGXC004296 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004296
cinnamomum_camphora_GWHPBGXC004297 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004297
cinnamomum_camphora_GWHPBGXC004300 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004300
cinnamomum_camphora_GWHPBGXC004312 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004312
cinnamomum_camphora_GWHPBGXC004342 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004342
cinnamomum_camphora_GWHPBGXC004618 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004618
cinnamomum_camphora_GWHPBGXC004622 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC004622
cinnamomum_camphora_GWHPBGXC005704 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC005704
cinnamomum_camphora_GWHPBGXC006161 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC006161
cinnamomum_camphora_GWHPBGXC006516 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC006516
cinnamomum_camphora_GWHPBGXC007815 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC007815
cinnamomum_camphora_GWHPBGXC008269 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008269
cinnamomum_camphora_GWHPBGXC008272 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008272
cinnamomum_camphora_GWHPBGXC008287 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008287
cinnamomum_camphora_GWHPBGXC008301 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008301
cinnamomum_camphora_GWHPBGXC008311 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008311
cinnamomum_camphora_GWHPBGXC008320 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008320
cinnamomum_camphora_GWHPBGXC008330 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008330
cinnamomum_camphora_GWHPBGXC008340 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008340
cinnamomum_camphora_GWHPBGXC008342 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC008342
cinnamomum_camphora_GWHPBGXC009447 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC009447
cinnamomum_camphora_GWHPBGXC009766 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC009766
cinnamomum_camphora_GWHPBGXC009767 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC009767
cinnamomum_camphora_GWHPBGXC010015 cinnamomum_camphora cinnamomum_camphora_GWHPBGXC010015