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
XP_008236165.2 prunus_mume XP_008236165.2
XP_008236166.1 prunus_mume XP_008236166.1
XP_008237426.1 prunus_mume XP_008237426.1
Pper01G0041810.1 prunus_persica Pper01G0041810.1
Pper01G0041810.2 prunus_persica Pper01G0041810.2
Pper06G0021610.1 prunus_persica Pper06G0021610.1
Pper08G0015660.1 prunus_persica Pper08G0015660.1
Pper08G0015670.1 prunus_persica Pper08G0015670.1
Pper08G0015680.1 prunus_persica Pper08G0015680.1
prunus_salicina_evm.model.LG01.2040 prunus_salicina prunus_salicina_evm.model.LG01.2040
prunus_salicina_evm.model.LG06.511 prunus_salicina prunus_salicina_evm.model.LG06.511
prunus_salicina_evm.model.LG08.1713 prunus_salicina prunus_salicina_evm.model.LG08.1713
prunus_salicina_evm.model.LG08.1714 prunus_salicina prunus_salicina_evm.model.LG08.1714
prunus_salicina_evm.model.LG08.1715 prunus_salicina prunus_salicina_evm.model.LG08.1715
prunus_salicina_evm.model.LG08.1716 prunus_salicina prunus_salicina_evm.model.LG08.1716
Prusib.1G647600.t1.p1_1 prunus_sibirica Prusib.1G647600.t1.p1_1
Prusib.6G380900.t1.p1_1 prunus_sibirica Prusib.6G380900.t1.p1_1
Prusib.8G304400.t1.p1_1 prunus_sibirica Prusib.8G304400.t1.p1_1
Prusib.8G304500.t1.p1_1 prunus_sibirica Prusib.8G304500.t1.p1_1
prunus_yedoensis_CYE_r3.1SPA1_g029490.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPA1_g029490.1
prunus_yedoensis_CYE_r3.1SPA6_g029520.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPA6_g029520.1
prunus_yedoensis_CYE_r3.1SPA8_g020610.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPA8_g020610.1
prunus_yedoensis_CYE_r3.1SPA8_g020630.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPA8_g020630.1
prunus_yedoensis_CYE_r3.1SPE0_g095890.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPE0_g095890.1
prunus_yedoensis_CYE_r3.1SPE1_g034040.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPE1_g034040.1
prunus_yedoensis_CYE_r3.1SPE6_g017160.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPE6_g017160.1
prunus_yedoensis_CYE_r3.1SPE8_g024700.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPE8_g024700.1
prunus_yedoensis_CYE_r3.1SPE8_g024740.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPE8_g024740.1
prunus_yedoensis_CYE_r3.1SPE8_g024750.1 prunus_yedoensis prunus_yedoensis_CYE_r3.1SPE8_g024750.1
przewalskia_tangutica_MNPT021255.1 przewalskia_tangutica przewalskia_tangutica_MNPT021255.1