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
Aalbaalba5_s001029150411020.1	abies_alba	Aalbaalba5_s001029150411020.1
Aalbaalba5_s001555350526290.1	abies_alba	Aalbaalba5_s001555350526290.1
Aalbaalba5_s001555350526290.2	abies_alba	Aalbaalba5_s001555350526290.2
Aalbaalba5_s002807170697730.1	abies_alba	Aalbaalba5_s002807170697730.1
Aalbaalba5_s003156760728340.1	abies_alba	Aalbaalba5_s003156760728340.1
Aalbaalba5_s003465630750700.1	abies_alba	Aalbaalba5_s003465630750700.1
Aalbaalba5_s003465630750700.2	abies_alba	Aalbaalba5_s003465630750700.2
Aalbaalba5_s005640990850630.1	abies_alba	Aalbaalba5_s005640990850630.1
Aalbaalba5_s008684340901260.1	abies_alba	Aalbaalba5_s008684340901260.1
XP_027329508.1	abrus_precatorius	XP_027329508.1
XP_027337244.1	abrus_precatorius	XP_027337244.1
XP_027344402.1	abrus_precatorius	XP_027344402.1
XP_027344403.1	abrus_precatorius	XP_027344403.1
XP_027344874.1	abrus_precatorius	XP_027344874.1
XP_027344875.1	abrus_precatorius	XP_027344875.1
XP_027347303.1	abrus_precatorius	XP_027347303.1
XP_027347304.1	abrus_precatorius	XP_027347304.1
XP_027347305.1	abrus_precatorius	XP_027347305.1
XP_027348129.1	abrus_precatorius	XP_027348129.1
XP_027348791.1	abrus_precatorius	XP_027348791.1
XP_027349325.1	abrus_precatorius	XP_027349325.1
XP_027350819.1	abrus_precatorius	XP_027350819.1
XP_027350820.1	abrus_precatorius	XP_027350820.1
XP_027350821.1	abrus_precatorius	XP_027350821.1
XP_027350822.1	abrus_precatorius	XP_027350822.1
XP_027357959.1	abrus_precatorius	XP_027357959.1
XP_027357960.1	abrus_precatorius	XP_027357960.1
XP_027357961.1	abrus_precatorius	XP_027357961.1
XP_027357963.1	abrus_precatorius	XP_027357963.1
XP_027358212.1	abrus_precatorius	XP_027358212.1