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_00918 acorus_gramineus acorus_gramineus_AGRA_00918
acorus_gramineus_AGRA_01244 acorus_gramineus acorus_gramineus_AGRA_01244
acorus_gramineus_AGRA_01355 acorus_gramineus acorus_gramineus_AGRA_01355
acorus_gramineus_AGRA_01356 acorus_gramineus acorus_gramineus_AGRA_01356
acorus_gramineus_AGRA_01361 acorus_gramineus acorus_gramineus_AGRA_01361
acorus_gramineus_AGRA_01383 acorus_gramineus acorus_gramineus_AGRA_01383
acorus_gramineus_AGRA_02148 acorus_gramineus acorus_gramineus_AGRA_02148
acorus_gramineus_AGRA_02733 acorus_gramineus acorus_gramineus_AGRA_02733
acorus_gramineus_AGRA_03180 acorus_gramineus acorus_gramineus_AGRA_03180
acorus_gramineus_AGRA_03257 acorus_gramineus acorus_gramineus_AGRA_03257
acorus_gramineus_AGRA_03286 acorus_gramineus acorus_gramineus_AGRA_03286
acorus_gramineus_AGRA_03287 acorus_gramineus acorus_gramineus_AGRA_03287
acorus_gramineus_AGRA_03476 acorus_gramineus acorus_gramineus_AGRA_03476
acorus_gramineus_AGRA_03952 acorus_gramineus acorus_gramineus_AGRA_03952
acorus_gramineus_AGRA_04022 acorus_gramineus acorus_gramineus_AGRA_04022
acorus_gramineus_AGRA_04263 acorus_gramineus acorus_gramineus_AGRA_04263
acorus_gramineus_AGRA_05013 acorus_gramineus acorus_gramineus_AGRA_05013
acorus_gramineus_AGRA_05659 acorus_gramineus acorus_gramineus_AGRA_05659
acorus_gramineus_AGRA_05670 acorus_gramineus acorus_gramineus_AGRA_05670
acorus_gramineus_AGRA_05671 acorus_gramineus acorus_gramineus_AGRA_05671
acorus_gramineus_AGRA_06395 acorus_gramineus acorus_gramineus_AGRA_06395
acorus_gramineus_AGRA_06496 acorus_gramineus acorus_gramineus_AGRA_06496
acorus_gramineus_AGRA_07400 acorus_gramineus acorus_gramineus_AGRA_07400
acorus_gramineus_AGRA_07936 acorus_gramineus acorus_gramineus_AGRA_07936
acorus_gramineus_AGRA_08237 acorus_gramineus acorus_gramineus_AGRA_08237
acorus_gramineus_AGRA_08241 acorus_gramineus acorus_gramineus_AGRA_08241
acorus_gramineus_AGRA_08690 acorus_gramineus acorus_gramineus_AGRA_08690
acorus_gramineus_AGRA_09497 acorus_gramineus acorus_gramineus_AGRA_09497
acorus_gramineus_AGRA_10223 acorus_gramineus acorus_gramineus_AGRA_10223
acorus_gramineus_AGRA_10306 acorus_gramineus acorus_gramineus_AGRA_10306