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/FDFT128 SQE21 CAS480
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/SMT3237 SMO1/SMO287 CPI18 CYP51G188 FK13 HYD18 DWF757 DWF54 DWF129
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 Gymnosperms (1147)
Current lineage filter: Gymnosperms. All species, family, module, and gene statistics below have been narrowed to this lineage.
Algae
Hits0
Bryophytes
Hits0
Lycophytes/Ferns
Hits0
Gymnosperms
Hits1147
Basal angiosperms
Hits0
Monocots
Hits0
Eudicots
Hits0
Species Distribution
Pinus taeda
Abies alba
Ginkgo biloba
Gnetum montanum
Taxus chinensis
Welwitschia mirabilis
Lineage Summary
Gymnosperms
1147
Module Gene List
Reset
GeneSpeciesProtein ID
Aalbaalba5_s000170050106910.1 abies_alba Aalbaalba5_s000170050106910.1
Aalbaalba5_s000215430129060.1 abies_alba Aalbaalba5_s000215430129060.1
Aalbaalba5_s000238100139100.1 abies_alba Aalbaalba5_s000238100139100.1
Aalbaalba5_s000266260151930.1 abies_alba Aalbaalba5_s000266260151930.1
Aalbaalba5_s000275500155850.1 abies_alba Aalbaalba5_s000275500155850.1
Aalbaalba5_s000294920163870.1 abies_alba Aalbaalba5_s000294920163870.1
Aalbaalba5_s000295580164130.1 abies_alba Aalbaalba5_s000295580164130.1
Aalbaalba5_s000304040167980.1 abies_alba Aalbaalba5_s000304040167980.1
Aalbaalba5_s000335180181650.1 abies_alba Aalbaalba5_s000335180181650.1
Aalbaalba5_s000354400189650.1 abies_alba Aalbaalba5_s000354400189650.1
Aalbaalba5_s000354400189650.2 abies_alba Aalbaalba5_s000354400189650.2
Aalbaalba5_s000379660200730.1 abies_alba Aalbaalba5_s000379660200730.1
Aalbaalba5_s000381070201290.1 abies_alba Aalbaalba5_s000381070201290.1
Aalbaalba5_s000385870203430.1 abies_alba Aalbaalba5_s000385870203430.1
Aalbaalba5_s000457600233860.1 abies_alba Aalbaalba5_s000457600233860.1
Aalbaalba5_s000473240240230.1 abies_alba Aalbaalba5_s000473240240230.1
Aalbaalba5_s000474370240670.1 abies_alba Aalbaalba5_s000474370240670.1
Aalbaalba5_s000474370240670.2 abies_alba Aalbaalba5_s000474370240670.2
Aalbaalba5_s000608430288830.1 abies_alba Aalbaalba5_s000608430288830.1
Aalbaalba5_s000632860297210.1 abies_alba Aalbaalba5_s000632860297210.1
Aalbaalba5_s000653050303790.1 abies_alba Aalbaalba5_s000653050303790.1
Aalbaalba5_s000693130316240.1 abies_alba Aalbaalba5_s000693130316240.1
Aalbaalba5_s000719790324410.1 abies_alba Aalbaalba5_s000719790324410.1
Aalbaalba5_s000719790324420.1 abies_alba Aalbaalba5_s000719790324420.1
Aalbaalba5_s000719790324420.2 abies_alba Aalbaalba5_s000719790324420.2
Aalbaalba5_s000719790324420.3 abies_alba Aalbaalba5_s000719790324420.3
Aalbaalba5_s000719790324420.4 abies_alba Aalbaalba5_s000719790324420.4
Aalbaalba5_s000767850339140.1 abies_alba Aalbaalba5_s000767850339140.1
Aalbaalba5_s000767850339140.2 abies_alba Aalbaalba5_s000767850339140.2
Aalbaalba5_s000767850339140.3 abies_alba Aalbaalba5_s000767850339140.3