Interaction of erythrocyte protein 4.1 with phospholipids. A monolayer and liposome study.
Interaction of erythrocyte protein 4.1 with phospholipids. A monolayer and liposome study.
复制标题
红细胞蛋白 4.1 与磷脂的相互作用。
DOI:
10.1016/0005-2736(88)90249-0
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发表时间:
1988
期刊:
影响因子:
--
通讯作者:
Shohet,SB
中科院分区:
文献类型:
--
作者:
Shiffer,KA;Goerke,J;Düzgüneş,N;Fedor,J;Shohet,SB
We have studied the interaction of purified human erythrocyte protein 4.1 with phospholipid membranes by monitoring both the increase in surface pressure of monolayers at the air/water interface and the change in permeability in liposomes to fluorescent molecules, in the presence of protein 4.1. Protein 4.1 penetrated into monolayers of brain phosphatidylserine (PS) and egg phosphatidylcholine (PC), even above surface pressures of 30 mN/m. Protein 4.1 increased the permeability of negatively charged PS, but not PC, liposomes, measured as the increase in fluorescence when encapsulated 1-aminonaphthalene-3, 6, 8-trisulfonic acid (ANTS) and p-xylenebispyridinium bromide (DPX) or carboxyfluorescein were released into the medium. The interaction of protein 4.1 with PS large unilamellar vesicles (LUV) was increased as the pH and the ionic strength were lowered, and decreased as the Ca 2+ or Mg 2+ concentrations and ionic strength were raised. In order to study the relevance of these measurements to the erythrocyte, we prepared LUV of synthetic lipid mixtures characteristic of both the inner and the outer membrane leaflets. Protein 4.1 increased the permeability of inner, but not outer, leaflet LUV at both pH 6.0 and 7.4. These observations suggest that negatively charged phospholipid domains around the protein 4.1 high-affinity protein-binding site (s) may contribute to the anchoring of protein 4.1 to the cytoplasmic surface of the red cell membrane.
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DOI:
--
发表时间:
1980
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Goodman,SR;Weidner,SA
通讯作者:
Weidner,SA
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Goodman,SR;Yu,J;Whitfield,CF;Culp,EN;Posnak,EJ
通讯作者:
Posnak,EJ
DOI:
10.1016/s0021-9258(17)43089-4
发表时间:
1984-04
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
T. Leto;V. Marchesi
通讯作者:
T. Leto;V. Marchesi
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
V. Fowler;V. Bennett
通讯作者:
V. Bennett
DOI:
--
发表时间:
1978
期刊:
Journal of Supramolecular Structure
影响因子:
--
作者:
S. Goodman;D. Branton
通讯作者:
D. Branton