A simple vertebrate collagenase assay using soluble radioactive collagen substrate.

A simple vertebrate collagenase assay using soluble radioactive collagen substrate.
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使用可溶性放射性胶原底物进行简单的脊椎动物胶原酶测定。

DOI:
10.1016/0003-2697(84)90384-1
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发表时间:
1984
影响因子:
2.9
通讯作者:
Kenyon,KR
Kenyon,KR
中科院分区:
生物学4区
文献类型:
--
作者:
Seng,WL;Davison,PF;Kenyon,KR

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以[~(14)C]脯氨酸或[~ 3 H]脯氨酸标记的胶原蛋白为可溶性底物,建立了一种高灵敏度的脊椎动物胶原酶测定方法。该底物易于制备,比活性高(1.4 × 106 cpm/mg胶原),在-20 °C下长期稳定。用于测定的消化反应在21°C下进行,以最小化胶原蛋白酶以外的蛋白酶对胶原蛋白的切割,并保护胶原蛋白的3 4和1 4切割片段免受蛋白酶的进一步攻击。将裂解产物变性,然后通过用pH 3.5的1 M NaCl沉淀从未消化的天然胶原分离。选择变性和分离的条件比在一些其他测定中使用的条件更好地区分切割产物和未切割底物。消化产物可在测定结束时通过凝胶电泳进一步检查,以确认脊椎动物胶原酶的活性。该测定也可适用于独立于胶原酶活性评估端肽酶活性。
A highly sensitive assay for vertebrate collagenase has been developed using [14C]proline- or [3H]proline-labeled collagen as soluble substrate. The substrate was easy to prepare, gave high specific activity (1.4 × 106cpm/mg collagen), and was stable at −20°C for a long period. The digestion reaction for the assay was done at 21°C to minimize the cleavage of collagen by proteases other than collagenase and to protect the 3 4 and 1 4 cleavage fragments of collagen from being further attacked by proteases. The cleaved products were denatured and then separated from undigested native collagen by precipitation with 1 m NaCl at pH 3.5. The conditions selected for denaturation and separation gave better discrimination between the cleaved products and uncleaved substrate than did conditions used in some other assays. The digestion products can be examined further by gel electrophoresis at the end of the assay to confirm the activity of vertebrate collagenase. This assay can also be adapted to assess telopeptidase activity independently of collagenase activity.
兔肝中胶原溶解组织蛋白酶的纯化和表征
DOI: 10.1016/0014-5793(82)80699-6
发表时间: 1982
期刊: FEBS Letters
影响因子: 3.5
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胶原酶(三部分中的第一部分)。
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发表时间: 1974
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基于胶原蛋白协同水解的胶原酶活性的准确定量测定。
DOI: 10.1016/0003-2697(82)90330-x
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从大鼠尾腱和皮肤中制备完整的单体胶原蛋白以及溶液中非螺旋末端的结构。
DOI: --
发表时间: 1976
影响因子: 4.8
作者:
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基于使用对二恶烷的改良胶原酶测定方法。
DOI: 10.1016/0003-2697(79)90635-3
发表时间: 1979
影响因子: 2.9
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通讯作者: M. Nimni