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
PtremuloPotrs0167580241540.1.v1.427 populus_tremuloides PtremuloPotrs0167580241540.1.v1.427
PtremuloPotrs0393290318650.4.v1.427 populus_tremuloides PtremuloPotrs0393290318650.4.v1.427
PtremuloPotrs0412350330120.1.v1.427 populus_tremuloides PtremuloPotrs0412350330120.1.v1.427
Potri.002G114500.2.p populus_trichocarpa Potri.002G114500.2.p
Potri.005G146700.2.p populus_trichocarpa Potri.005G146700.2.p
Potri.005G146700.3.p populus_trichocarpa Potri.005G146700.3.p
Potri.007G007600.1.p populus_trichocarpa Potri.007G007600.1.p
Potri.012G120676.1.p populus_trichocarpa Potri.012G120676.1.p
Potri.012G121136.1.p populus_trichocarpa Potri.012G121136.1.p
Potri.015G120900.2.p populus_trichocarpa Potri.015G120900.2.p
Potri.015G121201.1.p populus_trichocarpa Potri.015G121201.1.p
Potri.019G003102.1.p populus_trichocarpa Potri.019G003102.1.p
Potri.019G003300.1.p populus_trichocarpa Potri.019G003300.1.p
Potri.019G003302.1.p populus_trichocarpa Potri.019G003302.1.p
Potri.019G003500.1.p populus_trichocarpa Potri.019G003500.1.p
Potri.019G003600.1.p populus_trichocarpa Potri.019G003600.1.p
Potri.019G003700.1.p populus_trichocarpa Potri.019G003700.1.p
Potri.019G014376.1.p populus_trichocarpa Potri.019G014376.1.p
Potri.019G014378.1.p populus_trichocarpa Potri.019G014378.1.p
populus_wilsonii_Pwi01G027530.1 populus_wilsonii populus_wilsonii_Pwi01G027530.1
populus_wilsonii_Pwi02G010370.1 populus_wilsonii populus_wilsonii_Pwi02G010370.1
populus_wilsonii_Pwi05G006960.1 populus_wilsonii populus_wilsonii_Pwi05G006960.1
populus_wilsonii_Pwi05G012810.1 populus_wilsonii populus_wilsonii_Pwi05G012810.1
populus_wilsonii_Pwi07G000710.1 populus_wilsonii populus_wilsonii_Pwi07G000710.1
populus_wilsonii_Pwi12G010660.1 populus_wilsonii populus_wilsonii_Pwi12G010660.1
populus_wilsonii_Pwi12G010690.1 populus_wilsonii populus_wilsonii_Pwi12G010690.1
populus_wilsonii_Pwi15G010960.1 populus_wilsonii populus_wilsonii_Pwi15G010960.1
populus_wilsonii_Pwi19G002200.1 populus_wilsonii populus_wilsonii_Pwi19G002200.1
populus_wilsonii_Pwi19G002210.1 populus_wilsonii populus_wilsonii_Pwi19G002210.1
populus_wilsonii_Pwi19G002220.1 populus_wilsonii populus_wilsonii_Pwi19G002220.1