P450s in Plants What's New and Interesting Arabidopsis Cytochrome P450s P450s in Other Plants

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CYP90A1:   23alpha-hydroxylase for 6-oxo-cathasterone (CPD), brassinosteroid synthesis (Arabidopsis thaliana).
1)  Szekeres M, Nemeth K, Koncz-Kalman Z, Mathur J, Kauschmann A, Altmann T, Redei GP, Nagy F, Schell J, Koncz C  (1996)  Brassinosteroids rescue the deficiency of CYP90, a cytochrome P450 controlling cell elongation and de-etiolation in Arabidopsis.  Cell 85: 171-182.  PubMed
2)  Mathur J, Molnar G, Fujioka S, Takatsuto S, Sakurai A, Yokota T, Adam G, Voigt B, Nagy F, Maas C, Schell J, Koncz C, Szekeres M  (1998)  Transcription of the Arabidopsis CPD gene, encoding a steroidogenic cytochrome P450, is negatively controlled by brassinosteroids.  Plant J 14: 593-602.  PubMed
3)  Bancos S, Nomura T, Sato T, Molnar G, Bishop GJ, Koncz C, Yokota T, Nagy F, Szekeres M  (2002)  Regulation of transcript levels of the Arabidopsis cytochrome P450 genes involved in brassinosteroid biosynthesis.  Plant Physiol 130: 504-513.  PubMed
4)  Schuler U, Kopke D, Altmann T, Mussig C  (2002)  Analysis of carbohydrate metabolism of CPD antisense plants and the brassinosteroid-deficient cbb1 mutant.  Plant Cell Environment 25: 783-791.  

CYP90B1:   22alpha-hydroxylase for 6-oxo-campestanol (Dwf4), brassinosteroid synthesis (Arabidopsis thaliana).
1)  Choe S, Dilkes BP, Fujioka S, Takatsuto S, Sakurai A, Feldmann KA  (1998)  The DWF4 gene of Arabidopsis encodes a cytochrome P450 that mediates multiple 22alpha-hydroxylation steps in brassinosteroid biosynthesis.  Plant Cell 10: 231-243.  PubMed
2)  Bancos S, Nomura T, Sato T, Molnar G, Bishop GJ, Koncz C, Yokota T, Nagy F, Szekeres M  (2002)  Regulation of transcript levels of the Arabidopsis cytochrome P450 genes involved in brassinosteroid biosynthesis.  Plant Physiol 130: 504-513.  PubMed
3)  Goda H, Shimada Y, Asami T, Fujioka S, Yoshida S  (2002)  Microarray analysis of brassinosteroid-regulated genes in Arabidopsis.  Plant Physiol 130: 1319-1334.  PubMed
4)  Shimada Y, Goda H, Nakamura A, Takatsuto S, Fujioka S, Yoshida S  (2003)  Organ-specific expression of brassinosteroid-biosynthetic genes and distribution of endogenous brassinosteroids in Arabidopsis.  Plant Physiol 131: 287-297.  PubMed

CYP90C1:   ROTUNDIFOLIA3 (ROT3), conversion of typhasterol to castasterone, brassinosteroid synthesis (Arabidopsis thaliana).
1)  Kim GT, Tsukaya H, Uchimiya H  (1998)  The ROTUNDIFOLIA3 gene of Arabidopsis thaliana encodes a new member of the cytochrome P-450 family that is required for the regulated polar elongation of leaf cells.  Genes Dev 12: 2381-2391.  PubMed
2)  Kim GT, Tsukaya H, Saito Y, Uchimiya H  (1999)  Changes in the shapes of leaves and flowers upon overexpression of cytochrome P450 in Arabidopsis.  Proc Natl Acad Sci USA 96: 9433-9437.  PubMed
3)  Kim G-T, Fujioka S, Kozuka T, Tax FE, Takatsuto S, Yoshida S, Tsukaya H  (2005)  CYP90C1 and CYP90D1 are involved in different steps in the brassinosteroid biosynthesis pathway in Arabidopsis thaliana.  Plant J 41: 710-721.  PubMed

CYP90D1:   brassinosteroid synthesis (Arabidopsis thaliana).
Kim G-T, Fujioka S, Kozuka T, Tax FE, Takatsuto S, Yoshida S, Tsukaya H  (2005)  CYP90C1 and CYP90D1 are involved in different steps in the brassinosteroid biosynthesis pathway in Arabidopsis thaliana.  Plant J 41: 710-721.  PubMed

CYP90D2:   brassinosteroid synthesis (6-deoxoteasterone to 3-dehydro-6-deoxoteasterone and teasterone to 3-dehydroteasterone), rice (Oryza sativa).
Hong Z, Ueguchi-Tanaka M, Umemura K, Uozu S, Fujioka S, Takatsuto S, Yoshida S, Ashikari M, Kitano H, Matsuoka M  (2003)  A rice brassinosteroid-deficient mutant, ebisu dwarf (d2), is caused by a loss of function of a new member of cytochrome P450.  Plant Cell 15: 2900-2910.  PubMed

CYP90:   brassinosteroid synthesis, aspen.
Wang XY, Wang CY, Olsson O  (2005)  Cloning and molecular characterization of a gene encoding cytochrome P450 C-23 steroid hydroxylase (CYP90) from aspen.  Yi Chuan Xue Bao 32: 384-392.  PubMed