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生物来源
bacterial (Leuconostoc mesenteroides)
质量水平
偶联物
FITC conjugate
形式
powder
分子量
average mol wt 40,000
标记范围
0.001-0.020 mol FITC per mol glucose
颜色
light yellow to dark orange
溶解性
H2O: 25 mg/mL
储存温度
2-8°C
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一般描述
葡聚糖是葡萄糖酐聚合物。 由大约95%的α-D-(166)键组成。 剩余的(163)键是葡聚糖的分支。分支长度的冲突数据意味着平均分支长度小于三个葡萄糖单位。但是，其他方法表明存在大于 50 个葡萄糖单位的分支。已发现的天然葡聚糖分子量（MW）在900万至5亿范围内。MW较低的葡聚糖分支略少，MW分布范围较窄。MW大于10,000 的葡聚糖表现得似乎它们是高度支化的。 随着MW的增加，葡聚糖分子的对称性增强。 MW为2,000至10,000的葡聚糖表现出可膨胀线圈的特性。 MW低于2,000的葡聚糖更像棒状。葡聚糖的分子量通过以下一种或多种方法测定：低角度激光散射、尺寸排阻色谱法、铜络合和蒽酮试剂、比色法还原糖测定和粘度。
应用
FITC-葡聚糖在心血管、微循环、灌注、细胞单层和细胞膜通透性研究中用作荧光通量示踪化合物，可实现对血流、膜损伤、血管引流和肾脏清除等过程进行检测。小FITC-葡聚糖也可用于检测内吞作用等过程。荧光素-葡聚糖，40 kDa，可用于研究细胞内吞活性。FITC-葡聚糖-40可用于研究内皮单层孔隙度和细胞层内的顶端-基底外侧运动。
FITC-葡聚糖被广泛用于运用显微荧光法进行微循环和细胞通透性研究。 FITC-葡聚糖被用于植物细胞壁孔隙度和毛细血管通透性研究。研究表明，血浆蛋白不与FITC-葡聚糖结合。
用异硫氰酸荧光素标记的葡聚糖可用于动物的灌注研究。
制备说明
Sigma通常以25 mg/ml或更高的浓度测试FITC葡聚糖在水中的溶解度。 溶液应避光保存。 在体内，FITC-葡聚糖稳定24小时以上。
警示用语：
Warning
危险声明
危险分类
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
靶器官
Respiratory system
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
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商品
包括FITC-葡聚糖、FITC-DEAE-葡聚糖(FDD)、FITC-羧甲基 - 葡聚糖（FCM-葡聚糖）在内的FITC标记多糖的补充信息。本页面主要介绍了重均分子量对于对应分子尺寸和其他物理性质的影响
Explore FITC-labelled polysaccharides and their properties, including impact of molecular weight on molecule dimensions.
相关内容
Dextran is a polymer of anhydroglucose. It is composed of approximately 95% alpha-D-(166) linkages. The remaining (163) linkages account for the branching of dextran.
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