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
alnus_rubra_ALNRU00096054-RA	alnus_rubra	alnus_rubra_ALNRU00096054-RA
alnus_rubra_ALNRU00096065-RA	alnus_rubra	alnus_rubra_ALNRU00096065-RA
alnus_rubra_ALNRU00096067-RA	alnus_rubra	alnus_rubra_ALNRU00096067-RA
alnus_rubra_ALNRU00096069-RA	alnus_rubra	alnus_rubra_ALNRU00096069-RA
alnus_rubra_ALNRU00096094-RA	alnus_rubra	alnus_rubra_ALNRU00096094-RA
alnus_rubra_ALNRU00096095-RA	alnus_rubra	alnus_rubra_ALNRU00096095-RA
alnus_rubra_ALNRU00100228-RA	alnus_rubra	alnus_rubra_ALNRU00100228-RA
alnus_rubra_ALNRU00100241-RA	alnus_rubra	alnus_rubra_ALNRU00100241-RA
alnus_rubra_ALNRU00100250-RA	alnus_rubra	alnus_rubra_ALNRU00100250-RA
alnus_rubra_ALNRU00101568-RA	alnus_rubra	alnus_rubra_ALNRU00101568-RA
alnus_rubra_ALNRU00101581-RA	alnus_rubra	alnus_rubra_ALNRU00101581-RA
alnus_rubra_ALNRU00104413-RA	alnus_rubra	alnus_rubra_ALNRU00104413-RA
alnus_rubra_ALNRU00104424-RA	alnus_rubra	alnus_rubra_ALNRU00104424-RA
alnus_rubra_ALNRU00104425-RA	alnus_rubra	alnus_rubra_ALNRU00104425-RA
alnus_rubra_ALNRU00105799-RA	alnus_rubra	alnus_rubra_ALNRU00105799-RA
alnus_rubra_ALNRU00105808-RA	alnus_rubra	alnus_rubra_ALNRU00105808-RA
alnus_rubra_ALNRU00105812-RA	alnus_rubra	alnus_rubra_ALNRU00105812-RA
alnus_rubra_ALNRU00111970-RA	alnus_rubra	alnus_rubra_ALNRU00111970-RA
alnus_rubra_ALNRU00111987-RA	alnus_rubra	alnus_rubra_ALNRU00111987-RA
alnus_rubra_ALNRU00112017-RA	alnus_rubra	alnus_rubra_ALNRU00112017-RA
alnus_rubra_ALNRU00112026-RA	alnus_rubra	alnus_rubra_ALNRU00112026-RA
alnus_rubra_ALNRU00112034-RA	alnus_rubra	alnus_rubra_ALNRU00112034-RA
alnus_rubra_ALNRU00112060-RA	alnus_rubra	alnus_rubra_ALNRU00112060-RA
alnus_rubra_ALNRU00115729-RA	alnus_rubra	alnus_rubra_ALNRU00115729-RA
alnus_rubra_ALNRU00124466-RA	alnus_rubra	alnus_rubra_ALNRU00124466-RA
alnus_rubra_ALNRU00124473-RA	alnus_rubra	alnus_rubra_ALNRU00124473-RA
alnus_rubra_ALNRU00124479-RA	alnus_rubra	alnus_rubra_ALNRU00124479-RA
alnus_rubra_ALNRU00124480-RA	alnus_rubra	alnus_rubra_ALNRU00124480-RA
alnus_rubra_ALNRU00124484-RA	alnus_rubra	alnus_rubra_ALNRU00124484-RA
alnus_rubra_ALNRU00125563-RA	alnus_rubra	alnus_rubra_ALNRU00125563-RA