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
Pstescaffold8590386040.1 pterocarya_stenoptera Pstescaffold8590386040.1
Pstescaffold96550435330.1 pterocarya_stenoptera Pstescaffold96550435330.1
Ppul3848720019510 ptilidium_pulcherrimum Ppul3848720019510
Ppul5807290168420 ptilidium_pulcherrimum Ppul5807290168420
Ppul5815670178050 ptilidium_pulcherrimum Ppul5815670178050
Pwilscaffold_10007160 ptychomitrium_wilsonii Pwilscaffold_10007160
Pwilscaffold_10007170 ptychomitrium_wilsonii Pwilscaffold_10007170
Pwilscaffold_120099060 ptychomitrium_wilsonii Pwilscaffold_120099060
Pwilscaffold_40150290 ptychomitrium_wilsonii Pwilscaffold_40150290
Pwilscaffold_40155990 ptychomitrium_wilsonii Pwilscaffold_40155990
Pwilscaffold_50170750 ptychomitrium_wilsonii Pwilscaffold_50170750
Pcyg2520630079740 ptychomnion_cygnisetum Pcyg2520630079740
Pcyg2770410118930 ptychomnion_cygnisetum Pcyg2770410118930
Pcyg2863500166240 ptychomnion_cygnisetum Pcyg2863500166240
Pcyg2973180230880 ptychomnion_cygnisetum Pcyg2973180230880
Pten01G0014980.1 puccinellia_tenuiflora Pten01G0014980.1
pugionium_cornutum_Pco07692.t1 pugionium_cornutum pugionium_cornutum_Pco07692.t1
pugionium_cornutum_Pco21608.t1 pugionium_cornutum pugionium_cornutum_Pco21608.t1
pugionium_cornutum_Pco22171.t1 pugionium_cornutum pugionium_cornutum_Pco22171.t1
pugionium_cornutum_Pco22172.t1 pugionium_cornutum pugionium_cornutum_Pco22172.t1
pugionium_cornutum_Pco25264.t1 pugionium_cornutum pugionium_cornutum_Pco25264.t1
pugionium_cornutum_Pco25520.t1 pugionium_cornutum pugionium_cornutum_Pco25520.t1
pugionium_dolabratum_Pdo00315.t1 pugionium_dolabratum pugionium_dolabratum_Pdo00315.t1
pugionium_dolabratum_Pdo00325.t1 pugionium_dolabratum pugionium_dolabratum_Pdo00325.t1
pugionium_dolabratum_Pdo18957.t1 pugionium_dolabratum pugionium_dolabratum_Pdo18957.t1
pugionium_dolabratum_Pdo28150.t1 pugionium_dolabratum pugionium_dolabratum_Pdo28150.t1
pugionium_dolabratum_Pdo28151.t1 pugionium_dolabratum pugionium_dolabratum_Pdo28151.t1
PyezPY_10054210 pyropia_yezoensis PyezPY_10054210
PyezPY_20067300 pyropia_yezoensis PyezPY_20067300
PyezPY_20075980 pyropia_yezoensis PyezPY_20075980