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PEG4-SPDP (PEGylated, long-chain SPDP crosslinker)

产品编号:3179726
包装规格:100 MG
产品类别:进口试剂
品牌:Sigma-Aldrich
优惠价:立即咨询
产品价格
产品编号包装单位单价(元)国内现货国外库存询价单
3179726100 MG4540
结构式
基本信息
Empirical Formula【经验(实验)分子式】
C23 H33 N3 O9 S2
Molecular weight
559.65
General description【一般描述】
SPDP-type reagents have an amine-reactive N-hydroxysuccinimide (NHS) ester at one end and a suflhydryl-reactive 2-pyridyldithiol group at the opposite end. PEG4-SPDP has a 4-unit polyethylene glycol spacer arm, which confers greater solubility to the crosslinker and linked proteins compared to crosslinkers having only hydrocarbon spacers. Pyridyldithiol reagents produce disulfide-containing linkages that can be cleaved with reducing agents such as dithiothreitol (DTT). Crosslinking experiments with SPDP reagents are not limited to those involving proteins. Any of a variety of molecules with primary amines and sulfhydryl groups can be modified or crosslinked using an SPDP reagent.
Features and Benefits【特点和优势】
  • Reactive groups: NHS ester and pyrirdyldithiol
  • Efficient amine conjugation—NHS ester provides effective conjugation to lysines, N-termini of peptides and other primary amines
  • Reversible sulfhydryl conjugation—pyridyldithiol group enables disulfide linkage with reduced cysteines and other sulfhydryl groups, providing a stable but cleavable bond
  • Polyethylene glycol—PEG groups are flexible, non-immunogenic, hydrophilic, and often enhance the solubility of attached molecules
  • Spacer arm—connects primary amines and sulfhydryl targets at distances up to 25.7 angstroms; compare to PEG12-SPDP (54.1 angstroms)
Caution【注意】
This product is sensitive to moisture. The vial is packaged in a resealable bag with a desiccant to reduce exposure to moisture. After cold storage, equilibrate the vial to room temperature before opening to reduce condensation inside the vial. Make fresh solutions. Storage of stock solutions is not recommended. After use, return the vial to the resealable bag. Close the bag and store the product at the recommended temperature.
产品性质
Quality Level【质量水平】
100
mol wt【分子量】
559.65
reaction suitability
reagent type: cross-linking reagent
storage condition【储存条件】
desiccated
solubility【溶解性】
water: soluble
shipped in【运输】
ambient
storage temp.【储存温度】
−20℃
SMILES string
O=C(CCSSC1=CC=CC=N1)NCCOCCOCCOCCOCCC(ON2C(CCC2=O)=O)=O
安全信息
Storage Class Code【储存分类代码】
13 - Non Combustible Solids
WGK
WGK 3
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