Modification of human haemoglobin with glucose 6-phosphate enhances tetramer-dimer subunit dissociation.
Modification of human haemoglobin with glucose 6-phosphate enhances tetramer-dimer subunit dissociation.
复制标题
用葡萄糖 6-磷酸修饰人血红蛋白可增强四聚体-二聚体亚基解离。
DOI:
10.1042/bj2390769
复制
发表时间:
1986
期刊:
影响因子:
--
通讯作者:
ValdesJr,R
中科院分区:
文献类型:
--
作者:
ValdesJr,R
Studies using equilibrium gel-permeation chromatography demonstrate that formation of the covalent adduct of D-glucose 6-phosphate (G6P) with human haemoglobin promotes dissociation of the haemoglobin tetramer into its component alpha beta dimer pairs [Kdoxy = 2.57 × 10(-6) versus Kdoxy (G6P) = 11.22 × 10(-6) M-haem]. On the other hand, Kd for glucosylated haemoglobin is identical with those of the O2- and CO-liganded forms of intact haemoglobin A0. These data are consistent with the phosphate moiety alone being responsible for a 4.5-fold increase in the tetramer-to-dimer apparent Kd. This suggests the glucose 6-phosphate moiety does not bind to the same sites on haemoglobin as do the free organic phosphates, as suggested by ligand-binding kinetics data or structural analysis. My study presents a working model for studying changes in protein subunit assembly as altered by protein phosphorylations.
登录
查看更多内容
DOI:
--
发表时间:
1976
期刊:
Recent Progress in Hormone Research
影响因子:
--
作者:
P. Bennett;N. Rushforth;M. Miller;P. Lecompte
通讯作者:
P. Lecompte
影响因子:
37.8
作者:
C. Elwood;E. Sigman
通讯作者:
E. Sigman
DOI:
10.1016/s0891-6632(88)80013-8
发表时间:
1988
期刊:
The Journal of diabetic complications
影响因子:
--
作者:
G. Lowder;N. Perri;E. Friedman
通讯作者:
E. Friedman
影响因子:
168.9
作者:
J. Sebus;E. Coene;J. A. van der Bult
通讯作者:
J. A. van der Bult
DOI:
10.3109/00365517109090667
发表时间:
1971-01-01
影响因子:
2.1
作者:
MOGENSEN, CE
通讯作者:
MOGENSEN, CE