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
XP_027358213.1	abrus_precatorius	XP_027358213.1
XP_027358214.1	abrus_precatorius	XP_027358214.1
XP_027358215.1	abrus_precatorius	XP_027358215.1
XP_027358217.1	abrus_precatorius	XP_027358217.1
XP_027358218.1	abrus_precatorius	XP_027358218.1
XP_027362882.1	abrus_precatorius	XP_027362882.1
XP_027362883.1	abrus_precatorius	XP_027362883.1
XP_027367783.1	abrus_precatorius	XP_027367783.1
XP_027367785.1	abrus_precatorius	XP_027367785.1
XP_027367786.1	abrus_precatorius	XP_027367786.1
XP_027367787.1	abrus_precatorius	XP_027367787.1
XP_027367883.1	abrus_precatorius	XP_027367883.1
XP_027367884.1	abrus_precatorius	XP_027367884.1
XP_027367885.1	abrus_precatorius	XP_027367885.1
XP_027367886.1	abrus_precatorius	XP_027367886.1
XP_027367887.1	abrus_precatorius	XP_027367887.1
acacia_pycnantha_KAI9070516.1	acacia_pycnantha	acacia_pycnantha_KAI9070516.1
acacia_pycnantha_KAI9070595.1	acacia_pycnantha	acacia_pycnantha_KAI9070595.1
acacia_pycnantha_KAI9070596.1	acacia_pycnantha	acacia_pycnantha_KAI9070596.1
acacia_pycnantha_KAI9071651.1	acacia_pycnantha	acacia_pycnantha_KAI9071651.1
acacia_pycnantha_KAI9071914.1	acacia_pycnantha	acacia_pycnantha_KAI9071914.1
acacia_pycnantha_KAI9072801.1	acacia_pycnantha	acacia_pycnantha_KAI9072801.1
acacia_pycnantha_KAI9072940.1	acacia_pycnantha	acacia_pycnantha_KAI9072940.1
acacia_pycnantha_KAI9073756.1	acacia_pycnantha	acacia_pycnantha_KAI9073756.1
acacia_pycnantha_KAI9076743.1	acacia_pycnantha	acacia_pycnantha_KAI9076743.1
acacia_pycnantha_KAI9077048.1	acacia_pycnantha	acacia_pycnantha_KAI9077048.1
acacia_pycnantha_KAI9077051.1	acacia_pycnantha	acacia_pycnantha_KAI9077051.1
acacia_pycnantha_KAI9077166.1	acacia_pycnantha	acacia_pycnantha_KAI9077166.1
acacia_pycnantha_KAI9077168.1	acacia_pycnantha	acacia_pycnantha_KAI9077168.1
acacia_pycnantha_KAI9077169.1	acacia_pycnantha	acacia_pycnantha_KAI9077169.1