Gene Details:

  • Gene ID:
  • Gene Symbol: Csβ-LCY1
  • Gene Name: beta-cyclase1
  • Genome:
  • Species: Citrus sinensis

Functional Descriptions:

  • The β-cyclization of lycopene, catalysed by the lycopene β-cyclases (β-LCY), seems to be a key regulatory step of the carotenoid pathway. In the present study, two β-LCYs from orange fruits (Citrus sinensis), named Csβ-LCY1 and Csβ-LCY2 have been isolated and the activity of the encoded proteins was demonstrated by functional analysis.
  • Csβ-LCY1 was expressed at low levels and remained relatively constant during fruit ripening while Csβ-LCY2 showed a chromoplast-specific expression and a marked induction in both peel and pulp of orange fruits in parallel with the accumulation of β,β-xanthophylls.
  • Sequence comparison between full-length cDNAs and genomic sequences of Citrus β-LCY1 and β-LCY2 revealed an intronless structure for both genes. DNA blot hybridization with total genomic DNA indicated that both β-LCY1 and β-LCY2 probably exist in a single copy in the C. sinensis genome (data not shown).
  • The resulting activities were 95.45±1.20 for Csβ-LCY1 and of 38.33±11.40 for Csβ-LCY2, demonstrating that both genes encoded functional lycopene β-cyclases.

Literature:

Gene Resources:

Orthologs:

Sequences:

  • CDS Sequence:
  • Protein Sequence: