PlantSME Plant secondary metabolism enzyme database
CAS

CAS

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 CAS.

Lineage Coverage
Detected in 783 of 789 public species; click a lineage to inspect its species list.
Algae
Bryophytes
Lycophytes/Ferns
Gymnosperms
Basal angiosperms
Monocots
Eudicots
Species Distribution
Hordeum vulgare
Triticum turgidum
Aegilops tauschii
Pinus taeda
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 35857 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
At.04g192730-v1.1.a1 amaranthus_tuberculatus At.04g192730-v1.1.a1
At.04g196280-v1.1.a1 amaranthus_tuberculatus At.04g196280-v1.1.a1
At.04g197500-v1.1.a1 amaranthus_tuberculatus At.04g197500-v1.1.a1
At.05g216050-v1.1.a1 amaranthus_tuberculatus At.05g216050-v1.1.a1
At.06g220250-v1.1.a1 amaranthus_tuberculatus At.06g220250-v1.1.a1
At.06g231870-v1.1.a1 amaranthus_tuberculatus At.06g231870-v1.1.a1
At.06g231880-v1.1.a1 amaranthus_tuberculatus At.06g231880-v1.1.a1
At.06g231980-v1.1.a1 amaranthus_tuberculatus At.06g231980-v1.1.a1
At.06g234740-v1.1.a1 amaranthus_tuberculatus At.06g234740-v1.1.a1
At.06g234750-v1.1.a1 amaranthus_tuberculatus At.06g234750-v1.1.a1
At.08g254740-v1.1.a1 amaranthus_tuberculatus At.08g254740-v1.1.a1
At.08g254760-v1.1.a1 amaranthus_tuberculatus At.08g254760-v1.1.a1
At.08g259940-v1.1.a1 amaranthus_tuberculatus At.08g259940-v1.1.a1
At.08g261520-v1.1.a1 amaranthus_tuberculatus At.08g261520-v1.1.a1
At.09g275030-v1.1.a1 amaranthus_tuberculatus At.09g275030-v1.1.a1
At.09g282100-v1.1.a1 amaranthus_tuberculatus At.09g282100-v1.1.a1
AtriAmTr_v1.0_scaffold000020007320.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000020007320.1
AtriAmTr_v1.0_scaffold000030015570.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000030015570.1
AtriAmTr_v1.0_scaffold000030015600.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000030015600.1
AtriAmTr_v1.0_scaffold000040017490.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000040017490.1
AtriAmTr_v1.0_scaffold000040017500.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000040017500.1
AtriAmTr_v1.0_scaffold000040017510.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000040017510.1
AtriAmTr_v1.0_scaffold000070029770.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000070029770.1
AtriAmTr_v1.0_scaffold000070029780.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000070029780.1
AtriAmTr_v1.0_scaffold000090033760.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000090033760.1
AtriAmTr_v1.0_scaffold000110043140.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000110043140.1
AtriAmTr_v1.0_scaffold000170060100.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000170060100.1
AtriAmTr_v1.0_scaffold000250083600.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000250083600.1
AtriAmTr_v1.0_scaffold000320099340.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000320099340.1
AtriAmTr_v1.0_scaffold000320099470.1 amborella_trichopoda AtriAmTr_v1.0_scaffold000320099470.1