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
asparagus_kiusianus_K1p1ch03g05219 asparagus_kiusianus asparagus_kiusianus_K1p1ch03g05219
asparagus_kiusianus_K1p1ch03g06110 asparagus_kiusianus asparagus_kiusianus_K1p1ch03g06110
asparagus_kiusianus_K1p1ch04g20181 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g20181
asparagus_kiusianus_K1p1ch04g20382 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g20382
asparagus_kiusianus_K1p1ch04g21254 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g21254
asparagus_kiusianus_K1p1ch04g22357 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g22357
asparagus_kiusianus_K1p1ch04g22368 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g22368
asparagus_kiusianus_K1p1ch04g22369 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g22369
asparagus_kiusianus_K1p1ch04g22558 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g22558
asparagus_kiusianus_K1p1ch04g22729 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g22729
asparagus_kiusianus_K1p1ch04g22731 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g22731
asparagus_kiusianus_K1p1ch04g23472 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g23472
asparagus_kiusianus_K1p1ch04g23782 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g23782
asparagus_kiusianus_K1p1ch04g23783 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g23783
asparagus_kiusianus_K1p1ch04g23784 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g23784
asparagus_kiusianus_K1p1ch04g23785 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g23785
asparagus_kiusianus_K1p1ch04g24042 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g24042
asparagus_kiusianus_K1p1ch04g24764 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g24764
asparagus_kiusianus_K1p1ch04g25766 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g25766
asparagus_kiusianus_K1p1ch04g27427 asparagus_kiusianus asparagus_kiusianus_K1p1ch04g27427
asparagus_kiusianus_K1p1ch05g07509 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g07509
asparagus_kiusianus_K1p1ch05g09464 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g09464
asparagus_kiusianus_K1p1ch05g09529 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g09529
asparagus_kiusianus_K1p1ch05g09643 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g09643
asparagus_kiusianus_K1p1ch05g11093 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g11093
asparagus_kiusianus_K1p1ch05g12978 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g12978
asparagus_kiusianus_K1p1ch05g12980 asparagus_kiusianus asparagus_kiusianus_K1p1ch05g12980
asparagus_kiusianus_K1p1ch06g34844 asparagus_kiusianus asparagus_kiusianus_K1p1ch06g34844
asparagus_kiusianus_K1p1ch06g35063 asparagus_kiusianus asparagus_kiusianus_K1p1ch06g35063
asparagus_kiusianus_K1p1ch06g35068 asparagus_kiusianus asparagus_kiusianus_K1p1ch06g35068