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_Brsc08g1407.t1 brasenia_schreberi brasenia_schreberi_Brsc08g1407.t1
brasenia_schreberi_Brsc08g1408.t1 brasenia_schreberi brasenia_schreberi_Brsc08g1408.t1
brasenia_schreberi_Brsc08g1691.t1 brasenia_schreberi brasenia_schreberi_Brsc08g1691.t1
brasenia_schreberi_Brsc08g1696.t1 brasenia_schreberi brasenia_schreberi_Brsc08g1696.t1
brasenia_schreberi_Brsc08g2117.t1 brasenia_schreberi brasenia_schreberi_Brsc08g2117.t1
brasenia_schreberi_Brsc08g2250.t1 brasenia_schreberi brasenia_schreberi_Brsc08g2250.t1
brasenia_schreberi_Brsc08g2274.t1 brasenia_schreberi brasenia_schreberi_Brsc08g2274.t1
brasenia_schreberi_Brsc09g0398.t1 brasenia_schreberi brasenia_schreberi_Brsc09g0398.t1
brasenia_schreberi_Brsc09g0427.t1 brasenia_schreberi brasenia_schreberi_Brsc09g0427.t1
brasenia_schreberi_Brsc09g0810.t1 brasenia_schreberi brasenia_schreberi_Brsc09g0810.t1
brasenia_schreberi_Brsc09g1102.t1 brasenia_schreberi brasenia_schreberi_Brsc09g1102.t1
brasenia_schreberi_Brsc09g1222.t4 brasenia_schreberi brasenia_schreberi_Brsc09g1222.t4
brasenia_schreberi_Brsc09g1391.t3 brasenia_schreberi brasenia_schreberi_Brsc09g1391.t3
brasenia_schreberi_Brsc09g1753.t2 brasenia_schreberi brasenia_schreberi_Brsc09g1753.t2
brasenia_schreberi_Brsc09g2871.t1 brasenia_schreberi brasenia_schreberi_Brsc09g2871.t1
brasenia_schreberi_Brsc1056s3.t1 brasenia_schreberi brasenia_schreberi_Brsc1056s3.t1
brasenia_schreberi_Brsc10g0144.t1 brasenia_schreberi brasenia_schreberi_Brsc10g0144.t1
brasenia_schreberi_Brsc10g1100.t2 brasenia_schreberi brasenia_schreberi_Brsc10g1100.t2
brasenia_schreberi_Brsc10g1800.t1 brasenia_schreberi brasenia_schreberi_Brsc10g1800.t1
brasenia_schreberi_Brsc11g0817.t1 brasenia_schreberi brasenia_schreberi_Brsc11g0817.t1
brasenia_schreberi_Brsc11g1018.t1 brasenia_schreberi brasenia_schreberi_Brsc11g1018.t1
brasenia_schreberi_Brsc11g1219.t1 brasenia_schreberi brasenia_schreberi_Brsc11g1219.t1
brasenia_schreberi_Brsc11g1220.t2 brasenia_schreberi brasenia_schreberi_Brsc11g1220.t2
brasenia_schreberi_Brsc11g1299.t1 brasenia_schreberi brasenia_schreberi_Brsc11g1299.t1
brasenia_schreberi_Brsc12g0830.t1 brasenia_schreberi brasenia_schreberi_Brsc12g0830.t1
brasenia_schreberi_Brsc12g1412.t2 brasenia_schreberi brasenia_schreberi_Brsc12g1412.t2
brasenia_schreberi_Brsc13g0626.t1 brasenia_schreberi brasenia_schreberi_Brsc13g0626.t1
brasenia_schreberi_Brsc13g0721.t1 brasenia_schreberi brasenia_schreberi_Brsc13g0721.t1
brasenia_schreberi_Brsc13g0722.t1 brasenia_schreberi brasenia_schreberi_Brsc13g0722.t1
brasenia_schreberi_Brsc13g0723.t1 brasenia_schreberi brasenia_schreberi_Brsc13g0723.t1