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.

Species Distribution

Related Modules

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

Gene	Species	Protein ID
amaranthus_tricolor_g20177.t1	amaranthus_tricolor	amaranthus_tricolor_g20177.t1
amaranthus_tricolor_g20548.t1	amaranthus_tricolor	amaranthus_tricolor_g20548.t1
amaranthus_tricolor_g20549.t1	amaranthus_tricolor	amaranthus_tricolor_g20549.t1
amaranthus_tricolor_g20550.t1	amaranthus_tricolor	amaranthus_tricolor_g20550.t1
amaranthus_tricolor_g20684.t1	amaranthus_tricolor	amaranthus_tricolor_g20684.t1
amaranthus_tricolor_g21383.t1	amaranthus_tricolor	amaranthus_tricolor_g21383.t1
amaranthus_tricolor_g22609.t1	amaranthus_tricolor	amaranthus_tricolor_g22609.t1
amaranthus_tricolor_g24028.t1	amaranthus_tricolor	amaranthus_tricolor_g24028.t1
amaranthus_tricolor_g25467.t1	amaranthus_tricolor	amaranthus_tricolor_g25467.t1
amaranthus_tricolor_g27259.t1	amaranthus_tricolor	amaranthus_tricolor_g27259.t1
amaranthus_tricolor_g27664.t1	amaranthus_tricolor	amaranthus_tricolor_g27664.t1
amaranthus_tricolor_g2789.t1	amaranthus_tricolor	amaranthus_tricolor_g2789.t1
amaranthus_tricolor_g3015.t1	amaranthus_tricolor	amaranthus_tricolor_g3015.t1
amaranthus_tricolor_g5540.t1	amaranthus_tricolor	amaranthus_tricolor_g5540.t1
amaranthus_tricolor_g8205.t1	amaranthus_tricolor	amaranthus_tricolor_g8205.t1
amaranthus_tricolor_g8656.t1	amaranthus_tricolor	amaranthus_tricolor_g8656.t1
amaranthus_tricolor_g9321.t1	amaranthus_tricolor	amaranthus_tricolor_g9321.t1
amaranthus_tricolor_g9903.t1	amaranthus_tricolor	amaranthus_tricolor_g9903.t1
amaranthus_tricolor_g9905.t1	amaranthus_tricolor	amaranthus_tricolor_g9905.t1
At.00g039060-v1.1.a1	amaranthus_tuberculatus	At.00g039060-v1.1.a1
At.01g021510-v1.1.a1	amaranthus_tuberculatus	At.01g021510-v1.1.a1
At.01g025460-v1.1.a1	amaranthus_tuberculatus	At.01g025460-v1.1.a1
At.02g067380-v1.1.a1	amaranthus_tuberculatus	At.02g067380-v1.1.a1
At.02g070330-v1.1.a1	amaranthus_tuberculatus	At.02g070330-v1.1.a1
At.02g073240-v1.1.a1	amaranthus_tuberculatus	At.02g073240-v1.1.a1
At.02g138900-v1.1.a1	amaranthus_tuberculatus	At.02g138900-v1.1.a1
At.03g089150-v1.1.a1	amaranthus_tuberculatus	At.03g089150-v1.1.a1
At.03g176310-v1.1.a1	amaranthus_tuberculatus	At.03g176310-v1.1.a1
At.04g180510-v1.1.a1	amaranthus_tuberculatus	At.04g180510-v1.1.a1
At.04g192720-v1.1.a1	amaranthus_tuberculatus	At.04g192720-v1.1.a1