Egg jelly induces the phosphorylation of histone H3 in spermatozoa of the sea urchin Arbacia punctulata.

Egg jelly induces the phosphorylation of histone H3 in spermatozoa of the sea urchin Arbacia punctulata.
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蛋冻诱导海胆 Arbacia punctulata 精子中组蛋白 H3 的磷酸化。

DOI:
10.1016/0012-1606(89)90302-3
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发表时间:
1989
影响因子:
2.7
通讯作者:
Aukerman,M
Aukerman,M
中科院分区:
生物学3区
文献类型:
--
作者:
Vacquier,VD;Porter,DC;Keller,SH;Aukerman,M

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用~(32)P标记的Arbacia punctulata精子,经可溶性卵冻处理后,放射性标记物被掺入组蛋白H_3中。标记的时间过程与卵子中精子原核的染色质去浓缩期相关。磷酸化发生在丝氨酸上,可能是由于H3上磷酸盐周转增加所致。卵冻的大分子部分(而不是肽部分)是H3磷酸化的诱导剂。该反应依赖于外部Ca 2+,并由莫能菌素和A23187诱导。磷酸二酯酶抑制剂IBMX不会诱导H3磷酸化,需要相对高浓度(250 μM)的蛋白激酶抑制剂H8来阻断反应,表明其不依赖cAMP。令人惊讶的发现是,仅将细胞稀释到无Na+培养基中是诱导H3放射性标记的最有效方法。这些结果与卵胶诱导的紫链球菌精子组蛋白H1磷酸化的研究结果相反。这些物种的差异必须反映这两个海胆物种在受精过程中的核蛋白磷酸化的调节机制之间的巨大进化分歧。
When spermatozoa ofArbacia punctulataare labeled with32P and treated with soluble egg jelly, radiolabel is incorporated into histone H3. The time course of labeling correlates with the period of chromatin decondensation of sperm pronuclei in eggs. Phosphorylation is on serine and may result from increased turnover of phosphate on H3. The macromolecular fraction of egg jelly (and not the peptide fraction) is the inducer of H3 phosphorylation. The reaction is dependent on external Ca2+and is induced by monensin and A23187. H3 phosphorylation is not induced by the phosphodiesterase inhibitor IBMX and relatively high (250 μM) concentrations of the protein kinase inhibitor H8 are needed to block the reaction, suggesting that it is cAMP independent. A surprising finding is that merely diluting the cells into Na+free media is the most effective method to induce the radiolabeling of H3. These results are in contrast to findings on the egg jelly induced phosphorylation of histone H1 inS. purpuratusspermatozoa. These species differences must reflect the great evolutionary divergence between these two sea urchin species in the mechanism of regulation of the phosphorylation of nuclear proteins during fertilization.
DOI: 10.1038/334708a0
发表时间: 1988-08-25
期刊: NATURE
影响因子: 64.8
作者:
SINGH, S;LOWE, DG;GARBERS, DL
通讯作者: GARBERS, DL
DOI: 10.1016/s0091-679x(08)60340-4
发表时间: 1986
影响因子: --
作者:
Vacquier,VD
通讯作者: Vacquier,VD
内部 GTP 刺激海胆精子膜囊泡中 speract 受体介导的电压变化。
DOI: 10.1016/0012-1606(88)90242-4
发表时间: 1988
影响因子: 2.7
作者:
Lee,HC
通讯作者: Lee,HC
精子组蛋白 H1 的磷酸化是由海胆 Strongylocentrotus purpuratus 的卵冻层诱导的。
DOI: 10.1016/0012-1606(86)90057-6
发表时间: 1986
影响因子: 2.7
作者:
D. Porter;V. Vacquier
通讯作者: V. Vacquier
海胆 (S. purpuratus) H2A、H2B 和 H3 组蛋白编码和间隔区的 DNA 序列
DOI: 10.1016/0092-8674(78)90287-8
发表时间: 1978
期刊: Cell
影响因子: 64.5
作者:
I. Sures;Jean C. Lowry;L. Kedes
通讯作者: L. Kedes