Characterization of isoforms of hexose kinases in rice embryo

被引：34

作者：

Guglielminetti, L

Perata, P

Morita, A

Loreti, E

Yamaguchi, J

Alpi, A

机构：

[1] Univ Pisa, Dipartimento Biol Piante Agr, Sezione Fisiol Vegetale, I-561124 Pisa, Italy

[2] Nagoya Univ, Biosci Ctr, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[3] Nagoya Univ, Grad Sch Bioagr Sci, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[4] Univ Bari, Dipartimento Biol & Patol Vegetale, Bari, Italy

来源：

PHYTOCHEMISTRY | 2000年 / 53卷 / 02期

关键词：

Oryza sativa L; sugar sensing; fructokinase; glucokinase; glucosamine; hexokinase; mannoheptulose;

D O I：

10.1016/S0031-9422(99)00541-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Hexose kinases in rice embryos have been characterized. Six isoforms were detected: i.e. three glucokinases (GK1-3), two hexokinases (HK1 and HK2) and one fructokinase (FK1). Out of these, CK3, HK1 and HK2 were inhibited by mannoheptulose and glucosamine, known inhibitors of hexokinase activity. These inhibitors are also known to be modulators of sugar sensing processes. The results suggest that GK3, HK1 and HK2 may play a role in sensing the cellular sugar status in the rice embryo. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：195 / 200

页数：6

共 21 条

[1] CARBON CATABOLITE REPRESSION REGULATES GLYOXYLATE CYCLE GENE-EXPRESSION IN CUCUMBER [J].