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中文名(CN) 英文名(EN) CAS No. 规格(SP) 报价(CNY) 产地(From) 类别(Key)
亲和素 Avidin from egg white (10-15 units/mg) 1405-69-2 2MG 318.00 Sigma-A9275 蛋白质
亲和素 Avidin from egg white (10-15 units/mg) 1405-69-2 5MG 980.00 Sigma-A9275 蛋白质
亲和素 Avidin from egg white (10-15 units/mg) 1405-69-2 25MG 2503.00 Sigma-A9275 蛋白质

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中文名称 亲合素,抗生物素蛋白,卵白素
英文名称 Avidin,hen egg white
CAS识别号 1405-69-2
MDL识别号 MFCD00130572
EC识别号 215-783-6
Beilstein Null,without related properties.
分子式 Null,without related properties.
分子量 Null,without related properties.
分子结构图 分子图
产品性状 Null,without related properties.
质量标准 PHYSICAL DESCRIPTION:
Appearance: white lyophilized powder1
Molecular weight: approximately 66,000 Da, tetrameric2
Structure: Avidin is a tetrameric glycoprotein composed of four identical subunits. Each subunit has 128
amino acid residues (from sequence analysis) and a carbohydrate moiety (MW 14,328 + 1640 = 15,968).3,4
Avidin has at least three different carbohydrate structures possible which are indistinguishable by biotinbinding,
N-terminal analysis, SDS-PAGE.5 Only the asparagine-17 is glycosylated.3,6
Isoelectric point (pI): 106,7
Dissociation constant (Kd) for avidin-biotin complex: 10-15 M at neutral pH4
Binding capacity: For tetrameric avidin, the theoretical maximum is 4 moles biotin: 1 mole avidin4,8 or up to
15 mg biotin/mg protein.10
Avidin can be dissociated into subunits under strongly dissociating conditions. Each subunit is separately
capable of binding biotin, but the Kd = 10-7 M.4,7
Reported fluorescent wavelength: 338 nm for avidin, 328 nm for avidin-biotin complex7
储存条件 2-8 °C 冷藏保存,Stored at 2-8 °C.
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