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
Apunutg000167l0210480.1	anthoceros_punctatus	Apunutg000167l0210480.1
Apunutg000173l0218750.1	anthoceros_punctatus	Apunutg000173l0218750.1
Apunutg000173l0218750.2	anthoceros_punctatus	Apunutg000173l0218750.2
Apunutg000173l0218750.3	anthoceros_punctatus	Apunutg000173l0218750.3
Apunutg000173l0218800.1	anthoceros_punctatus	Apunutg000173l0218800.1
Apunutg000188l0227020.1	anthoceros_punctatus	Apunutg000188l0227020.1
Apunutg000188l0227260.1	anthoceros_punctatus	Apunutg000188l0227260.1
Apunutg000236l0237350.1	anthoceros_punctatus	Apunutg000236l0237350.1
antirrhinum_hispanicum_GWHPBJVR000546	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR000546
antirrhinum_hispanicum_GWHPBJVR000548	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR000548
antirrhinum_hispanicum_GWHPBJVR000550	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR000550
antirrhinum_hispanicum_GWHPBJVR000553	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR000553
antirrhinum_hispanicum_GWHPBJVR001277	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR001277
antirrhinum_hispanicum_GWHPBJVR001278	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR001278
antirrhinum_hispanicum_GWHPBJVR001471	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR001471
antirrhinum_hispanicum_GWHPBJVR003295	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR003295
antirrhinum_hispanicum_GWHPBJVR003296	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR003296
antirrhinum_hispanicum_GWHPBJVR003298	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR003298
antirrhinum_hispanicum_GWHPBJVR003300	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR003300
antirrhinum_hispanicum_GWHPBJVR005292	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR005292
antirrhinum_hispanicum_GWHPBJVR006814	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR006814
antirrhinum_hispanicum_GWHPBJVR006815	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR006815
antirrhinum_hispanicum_GWHPBJVR007203	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR007203
antirrhinum_hispanicum_GWHPBJVR007205	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR007205
antirrhinum_hispanicum_GWHPBJVR007211	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR007211
antirrhinum_hispanicum_GWHPBJVR007512	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR007512
antirrhinum_hispanicum_GWHPBJVR007781	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR007781
antirrhinum_hispanicum_GWHPBJVR007889	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR007889
antirrhinum_hispanicum_GWHPBJVR009254	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR009254
antirrhinum_hispanicum_GWHPBJVR009256	antirrhinum_hispanicum	antirrhinum_hispanicum_GWHPBJVR009256