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/FDFT1915 SQE331 CAS8601
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/SMT38083 SMO1/SMO22312 CPI1249 CYP51G11047 FK217 HYD1371 DWF7910 DWF5109 DWF1377
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 Monocots (25337)
Current lineage filter: Monocots. 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
Hits0
Monocots
Hits25337
Eudicots
Hits0
Species Distribution
Aegilops tauschii
Avena sativa
Hordeum vulgare
Triticum turgidum
Cenchrus fungigraminus
Daemonorops jenkinsiana
Eragrostis nindensis
Triticum aestivum
Eleusine coracana
Panicum virgatum
Lineage Summary
Monocots
25337
Module Gene List
Reset
GeneSpeciesProtein ID
acorus_gramineus_AGRA_18531 acorus_gramineus acorus_gramineus_AGRA_18531
acorus_gramineus_AGRA_19009 acorus_gramineus acorus_gramineus_AGRA_19009
acorus_gramineus_AGRA_19271 acorus_gramineus acorus_gramineus_AGRA_19271
acorus_gramineus_AGRA_19372 acorus_gramineus acorus_gramineus_AGRA_19372
acorus_gramineus_AGRA_19505 acorus_gramineus acorus_gramineus_AGRA_19505
acorus_gramineus_AGRA_19527 acorus_gramineus acorus_gramineus_AGRA_19527
acorus_gramineus_AGRA_19529 acorus_gramineus acorus_gramineus_AGRA_19529
acorus_gramineus_AGRA_19729 acorus_gramineus acorus_gramineus_AGRA_19729
acorus_gramineus_AGRA_20025 acorus_gramineus acorus_gramineus_AGRA_20025
acorus_gramineus_AGRA_20137 acorus_gramineus acorus_gramineus_AGRA_20137
acorus_gramineus_AGRA_20233 acorus_gramineus acorus_gramineus_AGRA_20233
acorus_gramineus_AGRA_20284 acorus_gramineus acorus_gramineus_AGRA_20284
acorus_gramineus_AGRA_20529 acorus_gramineus acorus_gramineus_AGRA_20529
acorus_gramineus_AGRA_20646 acorus_gramineus acorus_gramineus_AGRA_20646
acorus_gramineus_AGRA_20681 acorus_gramineus acorus_gramineus_AGRA_20681
acorus_gramineus_AGRA_20873 acorus_gramineus acorus_gramineus_AGRA_20873
acorus_gramineus_AGRA_20943 acorus_gramineus acorus_gramineus_AGRA_20943
acorus_gramineus_AGRA_21357 acorus_gramineus acorus_gramineus_AGRA_21357
acorus_gramineus_AGRA_21673 acorus_gramineus acorus_gramineus_AGRA_21673
acorus_gramineus_AGRA_21674 acorus_gramineus acorus_gramineus_AGRA_21674
acorus_gramineus_AGRA_21676 acorus_gramineus acorus_gramineus_AGRA_21676
acorus_gramineus_AGRA_21677 acorus_gramineus acorus_gramineus_AGRA_21677
acorus_gramineus_AGRA_21837 acorus_gramineus acorus_gramineus_AGRA_21837
acorus_gramineus_AGRA_21838 acorus_gramineus acorus_gramineus_AGRA_21838
acorus_gramineus_AGRA_21860 acorus_gramineus acorus_gramineus_AGRA_21860
acorus_gramineus_AGRA_21861 acorus_gramineus acorus_gramineus_AGRA_21861
acorus_gramineus_AGRA_21862 acorus_gramineus acorus_gramineus_AGRA_21862
ATA055.3.t1 acorus_tatarinowii ATA055.3.t1
ATA1.1245.t1 acorus_tatarinowii ATA1.1245.t1
ATA1.1352.t1 acorus_tatarinowii ATA1.1352.t1