Heterogeneity of heparan sulfate proteoglycans synthesized by PYS-2 cells.

Heterogeneity of heparan sulfate proteoglycans synthesized by PYS-2 cells.
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PYS-2 细胞合成的硫酸乙酰肝素蛋白多糖的异质性。

DOI:
10.1016/0003-9861(84)90395-3
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发表时间:
1984
影响因子:
3.9
通讯作者:
J. Hassell
J. Hassell
中科院分区:
生物学3区
文献类型:
--
作者:
B. Tyree;E. Horigan;D. Klippenstein;J. Hassell

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利用EHS肿瘤产生的基底膜蛋白聚糖抗体免疫沉淀PYS-2细胞产生的[35S]硫酸盐标记的原聚糖。免疫沉淀的蛋白多糖随后用CsCl密度梯度离心和Sepharose CL-4B层析进行分离。培养基中含有从Sepharose CL-4B中洗脱的低密度蛋白聚糖(kav = 0.18),含有mr = 35-40,000的硫酸肝素侧链。培养基中还含有从Sepharose CL-4B中洗脱的高密度蛋白聚糖(kav = 0.23),含有mr = 30,000的硫酸肝素侧链。细胞层中相应的蛋白聚糖均小于培养基中的蛋白聚糖。由于用于沉淀这些蛋白聚糖的抗体是直接针对蛋白质核心的,这表明这些蛋白聚糖具有共同的抗原特征,并且可能来源于通过去除蛋白质片段和每个硫酸肝素链的一部分进行修饰的共同前体。
Antibodies to the basement membrane proteoglycan produced by the EHS tumor were used to immunoprecipitate [35S]sulfate-labeled protoglycans produced by PYS-2 cells. The immunoprecipitated proteoglycans were subsequently fractionated by CsCl density gradient centrifugation and Sepharose CL-4B chromatography. The culture medium contained a low-density proteoglycan eluting from Sepharose CL-4B atKav= 0.18, containing heparan sulfate side chains ofMr= 35–40,000. The medium also contained a high-density proteoglycan eluting from Sepharose CL-4B atKav= 0.23, containing heparan sulfate side chains ofMr= 30,000. The corresponding proteoglycans of the cell layer were all smaller than those in the medium. Since the antibodies used to precipitate those proteoglycans were directed against the protein core, this suggests that these proteoglycans share common antigenic features, and may be derived from a common precursor which undergoes modification by the removal of protein segments and a portion of each heparan sulfate chain.
DOI: --
发表时间: 1981
期刊: The Journal of biological chemistry
影响因子: --
作者:
Parthasarathy,N;Spiro,RG
通讯作者: Spiro,RG
DOI: 10.1016/s0021-9258(18)33090-4
发表时间: 1983-02
期刊: The Journal of biological chemistry
影响因子: --
作者:
A. Oohira;T. Wight;P. Bornstein
通讯作者: A. Oohira;T. Wight;P. Bornstein
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Rapraeger,AC;Bernfield,M
通讯作者: Bernfield,M