DSP（57757-57-0）功能化交聯劑 

西安瑞禧生物科技有限公司有自己的獨立有機實驗室，可以自主功能化蛋白交聯劑，我們可以同功能蛋白交聯劑，異功能蛋白交聯劑，交聯劑及其他相關小分子交聯劑產品，我公司的產品純化達98%+以上并可以提供液相圖譜來佐證純度，并且提供相關技術指導服務。

研究人員經常需要將蛋白質固定在惰性表面上，用于不同的應用，包括分離和純化ARGET大分子，選擇性去除污染物，以及催化和化學修飾。固定化在金電上應用于用于檢測和分析大分子的親和生物傳感器。

Chemical cross-linking is perhaps the most commonly used method for immobilizing proteins on inert surfaces. Following is a protocol for attaching a protein onto a gold surface using the chemical cross-linker dithiobis(succinimidyl propionate) . DSP is a homobifunctional, amine-reactive cross-linker. The linkage formed between DSP and the gold surface is very stable, exceeding the strength and stability of covalent silane bonds with glass. The disulfide linkage in DSP chemisorbs rapidly to gold surfaces, while the active NHS groups on either end of DSP are reactive toward primary amine groups in proteins.

化學交聯也許是的固定蛋白質在惰性表面上的方法。以下是使用化學交聯劑DSP二硫代氨基甲酸酯（琥珀酰亞胺丙酸酯）將蛋白質附著在金表面上的過程。DSP是一種同官能、胺反應的交聯劑。在DSP與金表面之間形成的連接是穩定的，了與玻璃共價硅烷鍵的度和穩定性。DSP中的二硫鍵化學反應迅速地到達金表面，而DSP兩端的活性NHS基團對蛋白質中的伯胺基團反應。

產品名稱：DSP

簡介：Dithiobis(succinimidyl propionate) (DSP) is a homobifunctional crosslinker that is cell membrane permeable. DSP has amine-reactive N-hydroxysuccimide (NHS) esters at both ends of a cleava-ble, 8-atom (12.0 angstrom) spacer arm. DSP contains a reducible disulfide bond in the spacer arm that make it a good choice for various applications.

結構式：

Molecular Weight: 404.4

CAS #: 57757-57-0

Spacer Length: 12.0 Å

Alternative Names: 3,3′-Dithiodipropionic acid di(N-hydroxysuccinimide ester);

DSP交聯劑將蛋白質附著在金表面上

所需材料

• DSP, 4 mg required per ml of DMSO coating solution

• Dimethylsulfoxide (DMSO), sufficient volume to cover and later rinse gold surface

• Protein solution: 1-2 mg/ml protein dissolved in a compatible buffer (pH 7-8, containing at least 50 mM NaCl).

Recommended buffers include PBS, MOPS and HEPES. Avoid buffers containing primary amines,such as Tris and glycine.

的緩沖區包括PBS、MOP和HEPES。避免含有伯胺的緩沖液，如TrIS和甘氨酸。

Note: This procedure can be used to couple other ligands besides proteins that contain primary amines. For molecules that are not soluble in aqueous buffers, coupling can be performed in acetone, isopropyl alcohol or other solvents like DMSO, as long as amines are maintained in an uncharged state by addition of triethylamine or triethanolamine at a concentration equal to or greater than the concentration of DSP.

Procedure

1. Weigh DSP into a tube, and dissolve it in DMSO. Use 4 mg DSP per ml of DMSO necessary to cover the gold surface.

2. Incubate gold foil in dissolved DSP for 30 minutes at room temperature. 3. Rinse gold foil with DMSO and then with water. Gold foil is now activated with NHS groups. Note: Proceed directly to the next step; if protein coupling is not performed immediay, the NHS reactive groups will hydrolyze and protein coupling will be negligible.

3. Immediay add the protein solution to the activated gold foil and incubate for 1-4 hours at room temperature. Note: Incubation for longer time will not adversely affect conjugation efficiency. However, conjugation does not advance significantly after the first 1-2 hours.

4.Rinse the surface with buffer to remove cross-linker by-products (NHS leaving groups) and unconjugated protein.

Note: Free NHS groups (by-products of conjugation and hydrolysis) absorb strongly at 280 nm. Therefore, take care if attempting to determine the conjugation efficiency by measuring the change in protein concentration in solution.

應用：

•裂解前的化學交聯和沉淀

• “固定”蛋白質相互作用，以確定弱或短暫的蛋白質相互作用

• 固定組織進行染色而不RNA

• 蛋白質交聯通過單級反應產生生物偶聯物

• 將蛋白質固定在胺涂層表面上

產品列表：

（一）：Mass Spectrometry Standards - Mass Spec Standards （質樸分析相關試劑）

Leu-Enkephalin

Gonadoliberin

Angiotensin I

Neurotensin

Peptide Calibration Standard Set

（二）：protein crosslinkers （蛋白交聯相關試劑）

Protein crosslinkers （蛋白交聯相關試劑）：

Heterobifunctional Crosslinkers異型雙功能交聯劑：

SMCC Crosslinker           CAS Number: 64987-85-5

Sulfo-SMCC Crosslinker      CAS Number: 92921-24-9

Sulfo-SANPAH Crosslinker    CAS Number: 102568-43-4

SMPH Crosslinker

PDPH Crosslinker

MBS Crosslinker             CAS Number: 58626-38-3

Sulfo-MBS Crosslinker

SPDP Crosslinker            CAS Number: 68181-17-9

LC-SPDP Crosslinker  

Sulfo-LC-SPDP Crosslinker

SIA Crosslinker              CAS Number: 39028-27-8

SBA Crosslinker             CAS Number: 42014-51-7

SMPB Crosslinker           CAS Number: 79886-55-8

BMPS Crosslinker           CAS Number: 55750-62-4

EMCS Crosslinker           CAS Number: 55750-63-5

GMBS Crosslinker          CAS Number: 80307-12-6

ANB-NOS Crosslinker        CAS Number: 60117-35-3

Homobifunctional Crosslinkers同型雙功能交聯劑：

BS3 Crosslinker           CAS Number: 82436-77-9

DSS Crosslinker           CAS Number: 68528-80-3

BS2G Crosslinker

DSG Crosslinker          CAS Number: 79642-50-5

DSP Crosslinker           CAS Number: 57757-57-0

DTSSP Crosslinker        CAS Number: 81069-02-5

Sulfo-EGS Crosslinker     CAS Number: 167410-92-6

EGS Crosslinker          CAS Number: 70539-42-3

DST Crosslinker          CAS Number: 62069-75-4

Zero-Length Crosslinkers - EDC-HCl, Sulfo-NHS & NHS：

EDC-HCl               CAS Number: 25952-53-8

Sulfo-NHS              CAS Number: 106627-54-7

Deuterated Crosslinker BS3-d4

Deuterated Crosslinker BS2G-d4

Deuterated Crosslinker DSS-d4

（三）：Protein modification regents （蛋白修飾相關試劑）

Protein Modification Reagents 蛋白質修飾劑：

SATA Protein Modifier

N-Succinimidyl-S-Acetyl-Thioacetate

CAS Number: 76931-93-6

Sulfo-NHS-Acetate

CAS Number: 152305-87-8

Traut's Reagent  

CAS Number: 4781-83-3

HPG

CAS Number: 24645-80-5

Iodoacetic Acid

CAS Number: 64-69-7

BMPA Modifier

CAS Number: 7423-55-4

（四）：交聯試劑

Biotinylation Reagents化試劑

Sulfo-NHS-Biotin     CAS Number: 119616-38-5

NHS-Biotin          CAS Number: 35013-72-0

Sulfo-NHS-LC-Biotin  CAS Number: 127062-22-0

NHS-LC-Biotin       CAS Number: 72040-63-2

Sulfo-NHS-SS-Biotin  CAS Number: 325143-98-4

NHS-SS-Biotin       CAS Number: 142439-92-7

Biotin Hydrazide      CAS Number: 66640-86-6

Biotin-HPDP         CAS Number: 129179-83-5

Iodoacetyl-LC-Biotin   CAS Number: 93285-75-7

（五）Immobilization Resins固定化樹脂

Immobilization Resins固定化樹脂

Amino-Reactive Resin

Sulfhydryl-Reactive Resin

Carbohydrate-Reactive Resin

Carboxyl-Reactive Resin

Immobilized Pepsin  

Immobilized Chymotrypsin

以上資料源于西安瑞禧生物科技有限公司

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