PlantSME Plant secondary metabolism enzyme database
SQE

SQE

Triterpenoid/sterol-precursor shared module: SQS/SQE/OSC-family cyclases build the triterpenoid scaffold feeding sterol biosynthesis; overlap between terpenoid and steroid contexts is expected.

Atlas summary family SQE.

Lineage Coverage
Detected in 773 of 789 public species; click a lineage to inspect its species list.
Algae
Bryophytes
Lycophytes/Ferns
Gymnosperms
Basal angiosperms
Monocots
Eudicots
Species Distribution
Fragaria ananassa
Fragaria chiloensis
Rosa multiflora
Gossypium raimondii
Related Modules
Steroid pathway
Pathway Position Map
Pathways are arranged by literature-curated biosynthetic stages and highlight the current enzyme family; branched pathways are grouped by stage rather than forced into one linear reaction chain.
Curated order
Steroid pathway 4569 current-family members Du et al. 2022; Zebosi et al. 2024
Sterol precursor formation
SQS/FDFT1 4389 SQE 4569 CAS 35857
Phytosterol backbone
SMT1/SMT2/SMT3 27781 SMO1/SMO2 4067 CPI1 1261 CYP51G1 190 FK 1234 HYD1 1364 DWF7 1524 DWF5 888 DWF1 1689
Brassinosteroid branch
DET2 1316 DWF4/CYP90B1 290 CPD/CYP90A1 103 ROT3/CYP90C1 193 CYP90D1 142 BR6OX1/CYP85A1 40 BR6OX2/CYP85A2 68
Family Gene List
GeneSpeciesProtein ID
Potra001888g15033.2 populus_tremula Potra001888g15033.2
Potra001888g15033.3 populus_tremula Potra001888g15033.3
Potra001888g15033.4 populus_tremula Potra001888g15033.4
Potra002193g16904.1 populus_tremula Potra002193g16904.1
Potra002193g16904.2 populus_tremula Potra002193g16904.2
Potra002193g16904.3 populus_tremula Potra002193g16904.3
Potra002193g16904.4 populus_tremula Potra002193g16904.4
Potra003997g24062.1 populus_tremula Potra003997g24062.1
Potra003997g24062.2 populus_tremula Potra003997g24062.2
Potra003997g24062.3 populus_tremula Potra003997g24062.3
Potra003997g24062.4 populus_tremula Potra003997g24062.4
Potra187783g28534.1 populus_tremula Potra187783g28534.1
Potra187783g28534.2 populus_tremula Potra187783g28534.2
populus_tremula_x_alba_PtXaTreH.01G129300.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.01G129300.1.p
populus_tremula_x_alba_PtXaTreH.01G253000.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.01G253000.1.p
populus_tremula_x_alba_PtXaTreH.01G253100.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.01G253100.1.p
populus_tremula_x_alba_PtXaTreH.02G098300.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.02G098300.1.p
populus_tremula_x_alba_PtXaTreH.05G112900.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.05G112900.1.p
populus_tremula_x_alba_PtXaTreH.07G006700.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.07G006700.1.p
populus_tremula_x_alba_PtXaTreH.15G095100.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.15G095100.1.p
populus_tremula_x_alba_PtXaTreH.19G015000.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.19G015000.1.p
populus_tremula_x_alba_PtXaTreH.19G020700.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.19G020700.1.p
populus_tremula_x_alba_PtXaTreH.19G020800.1.p populus_tremula_x_alba populus_tremula_x_alba_PtXaTreH.19G020800.1.p
PtremuloPotrs0005370010440.1.v1.427 populus_tremuloides PtremuloPotrs0005370010440.1.v1.427
PtremuloPotrs0006900013670.1.v1.427 populus_tremuloides PtremuloPotrs0006900013670.1.v1.427
PtremuloPotrs0100760187040.1.v1.427 populus_tremuloides PtremuloPotrs0100760187040.1.v1.427
PtremuloPotrs0107400194500.1.v1.427 populus_tremuloides PtremuloPotrs0107400194500.1.v1.427
PtremuloPotrs0111000199600.1.v1.427 populus_tremuloides PtremuloPotrs0111000199600.1.v1.427
PtremuloPotrs0140720223330.1.v1.427 populus_tremuloides PtremuloPotrs0140720223330.1.v1.427
PtremuloPotrs0160560236450.1.v1.427 populus_tremuloides PtremuloPotrs0160560236450.1.v1.427