Molecular and Cellular Biochemistry

, Volume 366, Issue 1, pp 69–80

Identification of a major enzyme for the synthesis and hydrolysis of cyclic ADP-ribose in amphibian cells and evolutional conservation of the enzyme from human to invertebrate

  • Takayuki Ikeda
  • Shin Takasawa
  • Naoya Noguchi
  • Koji Nata
  • Akiyo Yamauchi
  • Iwao Takahashi
  • Takeo Yoshikawa
  • Akira Sugawara
  • Hideto Yonekura
  • Hiroshi Okamoto
Article

DOI: 10.1007/s11010-012-1284-0

Cite this article as:
Ikeda, T., Takasawa, S., Noguchi, N. et al. Mol Cell Biochem (2012) 366: 69. doi:10.1007/s11010-012-1284-0

Abstract

Cyclic ADP-ribose (cADPR), a metabolite of NAD+, is known to function as a second messenger for intracellular Ca2+ mobilization in various vertebrate and invertebrate tissues. In this study, we isolated two Xenopus laevis cDNAs (frog cd38 and cd157 cDNAs) homologous to the one encoding the human cADPR-metabolizing enzyme CD38. Frog CD38 and CD157 are 298-amino acid proteins with 35.9 and 27.2 % identity to human CD38 and CD157, respectively. Transfection of expression vectors for frog CD38 and CD157 into COS-7 cells revealed that frog CD38 had NAD+ glycohydrolase, ADP-ribosyl cyclase (ARC), and cADPR hydrolase activities, and that frog CD157 had no enzymatic activity under physiological conditions. In addition, when recombinant CD38 and frog brain homogenate were electrophoresed on an SDS–polyacrylamide gel, ARC of the brain homogenate migrated to the same position in the gel as that of frog CD38, suggesting that frog CD38 is the major enzyme responsible for cADPR metabolism in amphibian cells. The frog cd38 gene consists of eight exons and is ubiquitously expressed in various tissues. These findings provide evidence for the existence of the CD38–cADPR signaling system in frog cells and suggest that the CD38–cADPR signaling system is conserved during vertebrate evolution.

Keywords

ADP-ribosyl cyclaseCD157CD38Cyclic ADP-ribose hydrolaseXenopus laevis

Copyright information

© Springer Science+Business Media, LLC. 2012

Authors and Affiliations

  • Takayuki Ikeda
    • 1
    • 2
  • Shin Takasawa
    • 3
  • Naoya Noguchi
    • 2
  • Koji Nata
    • 4
  • Akiyo Yamauchi
    • 3
  • Iwao Takahashi
    • 4
  • Takeo Yoshikawa
    • 2
  • Akira Sugawara
    • 2
  • Hideto Yonekura
    • 1
  • Hiroshi Okamoto
    • 5
  1. 1.Department of BiochemistryKanazawa Medical University School of MedicineUchinada, Kahoku-gun, IshikawaJapan
  2. 2.Department of Advanced Biological Sciences for Regeneration (Kotobiken Medical Laboratories)Tohoku University Graduate School of MedicineSendai, MiyagiJapan
  3. 3.Department of BiochemistryNara Medical UniversityKashihara, NaraJapan
  4. 4.Department of Medical BiochemistryIwate Medical University School of PharmacyYahaba-cho, Shiwa-gun, IwateJapan
  5. 5.Tohoku UniversitySendai, MiyagiJapan