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
Aatt551180044290 anomodon_attenuatus Aatt551180044290
Aatt556430105810 anomodon_attenuatus Aatt556430105810
Aatt557760138540 anomodon_attenuatus Aatt557760138540
AagrBONNSc2ySwM_228G0041180 anthoceros_agrestis_bonn AagrBONNSc2ySwM_228G0041180
AagrBONNSc2ySwM_369G0001310 anthoceros_agrestis_bonn AagrBONNSc2ySwM_369G0001310
AagrOXFutg000050l0135910.1 anthoceros_agrestis_oxford AagrOXFutg000050l0135910.1
AagrOXFutg000057l0141610.1 anthoceros_agrestis_oxford AagrOXFutg000057l0141610.1
AANG000573 anthoceros_angustus AANG000573
AANG005727 anthoceros_angustus AANG005727
Apunutg000043l0065130.1 anthoceros_punctatus Apunutg000043l0065130.1
Apunutg000116l0144100.1 anthoceros_punctatus Apunutg000116l0144100.1
antirrhinum_hispanicum_GWHPBJVR004605 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR004605
antirrhinum_hispanicum_GWHPBJVR025095 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR025095
antirrhinum_hispanicum_GWHPBJVR035129 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR035129
antirrhinum_hispanicum_GWHPBJVR040316 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR040316
antirrhinum_hispanicum_GWHPBJVR040331 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR040331
antirrhinum_hispanicum_GWHPBJVR040344 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR040344
antirrhinum_hispanicum_GWHPBJVR041019 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR041019
antirrhinum_hispanicum_GWHPBJVR041048 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR041048
antirrhinum_hispanicum_GWHPBJVR041049 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR041049
antirrhinum_hispanicum_GWHPBJVR041050 antirrhinum_hispanicum antirrhinum_hispanicum_GWHPBJVR041050
Am01g08660.P01 antirrhinum_majus Am01g08660.P01
Am06g38730.P01 antirrhinum_majus Am06g38730.P01
Am08g03210.P01 antirrhinum_majus Am08g03210.P01
Am08g03330.P01 antirrhinum_majus Am08g03330.P01
Am08g12420.P01 antirrhinum_majus Am08g12420.P01
Am08g12440.P01 antirrhinum_majus Am08g12440.P01
Am08g12450.P01 antirrhinum_majus Am08g12450.P01
Am08g12750.P01 antirrhinum_majus Am08g12750.P01
Asin01G0024520 aquilaria_sinensis Asin01G0024520