Establishment and characterization of a new class of adenylate cyclases (class VII ACs) in plants
Zhiguo Liu,
Ye Yuan,
Lixin Wang,
Haonan Cao,
Chenyu Wang,
Xuan Zhao,
Lili Wang,
Mengjun Liu
Affiliations
Zhiguo Liu
Research Center of Chinese Jujube, Hebei Agricultural University, Baoding, Hebei, 071001, China; College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071001, China; Jujube Industry Technology Research Institute of Hebei, Baoding, Hebei, 071001, China
Ye Yuan
College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071001, China
Lixin Wang
College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071001, China
Haonan Cao
College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071001, China
Chenyu Wang
College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071001, China
Xuan Zhao
Research Center of Chinese Jujube, Hebei Agricultural University, Baoding, Hebei, 071001, China
Lili Wang
Research Center of Chinese Jujube, Hebei Agricultural University, Baoding, Hebei, 071001, China
Mengjun Liu
Research Center of Chinese Jujube, Hebei Agricultural University, Baoding, Hebei, 071001, China; College of Horticulture, Hebei Agricultural University, Baoding, Hebei, 071001, China; Jujube Industry Technology Research Institute of Hebei, Baoding, Hebei, 071001, China; Corresponding author. Research Center of Chinese Jujube, Hebei Agricultural University, Baoding, Hebei, 071001, China.
Adenylate cyclase is the key enzyme in the synthesis of cAMP. Now, more and more plant genes which possessing AC function are being identified, but the classification of plant ACs has not yet been systematically studied and the relationship of plant ACs with other existing six classes ACs in animals and microorganisms is still unclear. In this study, we found that 7 of the 15 reported plant ACs with conserved CYTH-like_AC_Ⅳ-like domain were clustered into a group with high confidence (Group Ⅳ), while the other plant ACs were clustered into other three groups with no common domain. In addition, we also found that the Group Ⅳ plant ACs were grouped into an independent and specific class (Class VII), separated from the existing six classes of ACs. The Group Ⅳ plant ACs, compared to the existing six classes of ACs, own unique CYTH-like_AC_Ⅳ-like conserved domain and EXEXK signature motif, characteristic protein tertiary structures, specific subcellular localization and catalytic conditions. In view of the above, we regarded the Group Ⅳ plant ACs as the seventh class of AC (VII AC). This study does the systematic classification of plant ACs which could lay a foundation for further identification and study of the biological functions of the plant-specific VII ACs.
