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Gene Review

CYP72C1  -  cytochrome p450 72c1

Arabidopsis thaliana

Synonyms: CHI2, CHIBI 2, F20D23.24, F20D23_24, SHK1, ...
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High impact information on CYP72C1

  • The mutant phenotype is caused by the overexpression of SOB7 (CYP72C1), a homolog of BAS1 [1].
  • Unlike BAS1/CYP734A1 the expression of CYP72C1 was not changed by application of exogenous brassinolide [2].
  • We propose that CYP72C1 controls BR homeostasis by modulating the concentration of BRs [2].
  • Overexpression of SOB7 results in a dramatic reduction in endogenous CS levels, and although single null-mutants of BAS1 and SOB7 have the same level of CS as the wild type, the double null-mutant has twice the amount [1].
  • Activation of the cytochrome P450 gene, CYP72C1, reduces the levels of active brassinosteroids in vivo [3].


  1. BAS1 and SOB7 act redundantly to modulate Arabidopsis photomorphogenesis via unique brassinosteroid inactivation mechanisms. Turk, E.M., Fujioka, S., Seto, H., Shimada, Y., Takatsuto, S., Yoshida, S., Wang, H., Torres, Q.I., Ward, J.M., Murthy, G., Zhang, J., Walker, J.C., Neff, M.M. Plant J. (2005) [Pubmed]
  2. shk1-D, a dwarf Arabidopsis mutant caused by activation of the CYP72C1 gene, has altered brassinosteroid levels. Takahashi, N., Nakazawa, M., Shibata, K., Yokota, T., Ishikawa, A., Suzuki, K., Kawashima, M., Ichikawa, T., Shimada, H., Matsui, M. Plant J. (2005) [Pubmed]
  3. Activation of the cytochrome P450 gene, CYP72C1, reduces the levels of active brassinosteroids in vivo. Nakamura, M., Satoh, T., Tanaka, S., Mochizuki, N., Yokota, T., Nagatani, A. J. Exp. Bot. (2005) [Pubmed]
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