IUBMB Enzyme Nomenclature


Accepted name: β-carotene isomerase

Reaction: all-trans-β-carotene = 9-cis-β-carotene

For diagram of reaction click here.

Other name(s): DWARF27 (gene name)

Systematic name: β-carotene 9-cis-all-trans isomerase

Comments: The enzyme participates in a pathway leading to biosynthesis of strigolactones, plant hormones involved in promotion of symbiotic associations known as arbuscular mycorrhiza.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Lin, H., Wang, R., Qian, Q., Yan, M., Meng, X., Fu, Z., Yan, C., Jiang, B., Su, Z., Li, J. and Wang, Y. DWARF27, an iron-containing protein required for the biosynthesis of strigolactones, regulates rice tiller bud outgrowth. Plant Cell 21 (2009) 1512-1525. [PMID: 19470589]

2. Alder, A., Jamil, M., Marzorati, M., Bruno, M., Vermathen, M., Bigler, P., Ghisla, S., Bouwmeester, H., Beyer, P. and Al-Babili, S. The path from β-carotene to carlactone, a strigolactone-like plant hormone. Science 335 (2012) 1348-1351. [PMID: 22422982]

[EC created 2012]

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