CANATOXIN-CROSS-REACTIVE, CONCANAVALIN-A-CROSS-REACTIVE AND CANAVALIN-CROSS-REACTIVE MATERIALS DURING MATURATION OF CANAVALIA-BRASILIENSIS (MART) SEEDS

被引:13
作者
BARCELLOS, GBS
ALMEIDA, LM
MOREIRA, RA
CAVADA, BS
DEOLIVEIRA, JTA
CARLINI, CR
机构
[1] UNIV FED RIO DE JANEIRO, INST CIENCIAS BIOMED, DEPT BIOCHEM, CP 68041, BR-21910 RIO DE JANEIRO, BRAZIL
[2] UNIV FED CEARA, CTR CIENCIAS, DEPT BIOCHEM & MOLEC BIOL, BR-60451 FORTALEZA, BRAZIL
关键词
CANATOXIN; CANAVALIA; CONCANAVALIN-A; CANAVALIN; SEED MATURATION;
D O I
10.1007/BF00194437
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The distribution of three cross-reactive materials (CRMs), a toxic protein analogous to canatoxin, CNTX-CRM, a lectin analogous to concanavalin A, Con A-CRM, and a major storage protein, canavalin-CRM, was investigated during successive stages of maturation of Canavalia brasiliensis Mart. seeds. The data obtained by sodium dodecyl sulphate-polyacrylamide gel electrophoresis and immunological analyses indicated that these proteins share extensive homology with the analogous proteins found in Canavalia ensiformis seeds. The changes in CNTX-CRM and Con A-CRM levels throughout the maturation process were assayed by rocket immunoelectrophoresis. Synthesis of Con A-CRM was detectable at 30 days post-anthesis (DPA) while its hemagglutinating activity appeared only at 35 DPA. The CNTX-CRM was detected as a biologically active protein from 30 DPA onwards. The behavior of CNTX-CRM during maturation of C. brasiliensis seeds was quite distinct from that of Con A-CRM, pointing to different biological roles of these proteins in the seed.
引用
收藏
页码:397 / 402
页数:6
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