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
prunus_domestica_Pd.00g421370.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g421370.m01-v1.0
prunus_domestica_Pd.00g467440.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g467440.m01-v1.0
prunus_domestica_Pd.00g499500.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g499500.m01-v1.0
prunus_domestica_Pd.00g499510.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g499510.m01-v1.0
prunus_domestica_Pd.00g537020.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g537020.m01-v1.0
prunus_domestica_Pd.00g537030.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g537030.m01-v1.0
prunus_domestica_Pd.00g537040.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g537040.m01-v1.0
prunus_domestica_Pd.00g537050.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g537050.m01-v1.0
prunus_domestica_Pd.00g537060.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g537060.m01-v1.0
prunus_domestica_Pd.00g556820.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g556820.m01-v1.0
prunus_domestica_Pd.00g556830.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g556830.m01-v1.0
prunus_domestica_Pd.00g650450.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g650450.m01-v1.0
prunus_domestica_Pd.00g689350.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g689350.m01-v1.0
prunus_domestica_Pd.00g740460.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g740460.m01-v1.0
prunus_domestica_Pd.00g752200.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g752200.m01-v1.0
prunus_domestica_Pd.00g925710.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g925710.m01-v1.0
prunus_domestica_Pd.00g925720.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g925720.m01-v1.0
prunus_domestica_Pd.00g925730.m01-v1.0 prunus_domestica prunus_domestica_Pd.00g925730.m01-v1.0
Pdul01G0039870.1 prunus_dulcis Pdul01G0039870.1
Pdul06G0021100.1 prunus_dulcis Pdul06G0021100.1
Pdul08G0015120.1 prunus_dulcis Pdul08G0015120.1
Pdul08G0015130.1 prunus_dulcis Pdul08G0015130.1
Pdul08G0015140.1 prunus_dulcis Pdul08G0015140.1
Pdul08G0015150.1 prunus_dulcis Pdul08G0015150.1
prunus_ferganensis_Pfe01g4507 prunus_ferganensis prunus_ferganensis_Pfe01g4507
prunus_ferganensis_Pfe06g2399 prunus_ferganensis prunus_ferganensis_Pfe06g2399
prunus_ferganensis_Pfe08g1779 prunus_ferganensis prunus_ferganensis_Pfe08g1779
prunus_ferganensis_Pfe08g1780 prunus_ferganensis prunus_ferganensis_Pfe08g1780
prunus_ferganensis_Pfe08g1781 prunus_ferganensis prunus_ferganensis_Pfe08g1781
prunus_fruticosa_Athal_rna-NM_001343843.1_R1 prunus_fruticosa prunus_fruticosa_Athal_rna-NM_001343843.1_R1