Propargyl-PEG8-t-butyl ester is a PEG reagent with an alkyne group and a t-butyl group. The alkyne group enables the formation of triazole linkage with azide-bearing compounds or biomolecules; copper is required as a catalyst. The t-butyl group can be hydrolyzed under acidic conditions. The hydrophicility of the molecule is improved by having 8 units of PEG. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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Propargyl-PEG8-t-butyl ester is a PEG reagent with an alkyne group and a t-butyl group. The alkyne group enables the formation of triazole linkage with azide-bearing compounds or biomolecules; copper is required as a catalyst. The t-butyl group can be hydrolyzed under acidic conditions. The hydrophicility of the molecule is improved by having 8 units of PEG. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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Shrimp Alkaline Phosphatase
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ArcticZymes’ Shrimp Alkaline Phosphatase (SAP), including its recombinant version (rSAP), is the gold standard and the first heat-labile, all-purpose alkaline phosphatase on the market.
Originally isolated from Pandalus borealis (Arctic shrimp), it has been purified from a recombinant source since 2010. Unlike other alkaline phosphatases, rSAP can be fully inactivated by a short heat treatment of 15 minutes at 65°C.
This added convenience through complete heat inactivation has made SAP one of the most sold DNA modifying enzymes.
For added flexibility, especially when lyophilisation may be desired, rSAP is also available in a Glycerol FREE format. First launched in 1993, SAP’s unique features continue to make it a valuable tool in various applications.
Key Features
Gold standard heat labile, all-purpose alkaline phosphatase.
Completely inactivated after 5 min at 65°C or 1 min at 75°C.
Robust: Active in most restriction enzyme buffers, no need for supplemental zinc or other additives for activity.
Simple, hassle-free dephosphorylation of DNA, RNA, dNTPs and proteins for subsequent use in cloning or end-labelling of probes.
No vector purification necessary.
Easy inactivation of unincorporated dNTPs in PCR products prior to DNA sequencing or SNP analysis.
Ideal for MALDI-TOF, cloning, HLA typing, genotyping and sequencing.
Preparing substrate in protein kinase studies.
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ArcticZymes’ Shrimp Alkaline Phosphatase (SAP), including its recombinant version (rSAP), is the gold standard and the first heat-labile, all-purpose alkaline phosphatase on the market.
Sal-Like Protein 4 (SALL4), is a zinc finger transcription factor found in germ cells and human blood progenitor cells, with functional involvement in modulating Oct-4 to maintain embryonic stem cell pluripotency. SALL4 is a useful marker for acute myeloid leukemia, B-cell acute lymphocytic leukemia, intratubular germ cell neoplasia, seminomas/dysgerminomas, and yolk sac tumors (both pediatric and postpubertal). Anti-SALL4 is used to detect embryonal carcinomas, hepatocellular carcinoma (HCC), gliomas, ovarian primitive germ-cell tumors, choriocarcinomas, spermatogonia, teratoma, gastric cancer, breast cancer, and lung cancer. Expression of SALL4 is often associated with poor prognosis in HCC, and with metastasis in endometrial cancer, colorectal carcinoma, and esophageal squamous cell carcinoma.
Usages: For the growth of pathogenic and non-pathogenic microorganisms.
Principle: Polypeptone provide carbon and nitrogen sources, vitamins and growth factors; Neisseria starch can promote the growth characteristics and enhanced hemolytic streptococci; sodium chloride to maintain osmotic balance; agar as culture medium coagulant.
Formulation (per liter): Peptone: 10g Beef extract powder :10g Sodium chloride: 5g Agar :15g Final pH 7.4 ± 0.2
How to use: 1. Suspend 40g of the product, adding 1 L of distilled or deionized water, ,heated to boiling stirring until completely dissolved, dispensing into flask, 121 autoclaved 15min. 2.After the medium is cooled to about 50 , sterile procedures, basal medium was added per 100mL defibrinated sheep or rabbit blood 5-10mL, shake pour plate; also dispensing sterile tubes set into the slope. Spare. 3. take the bacteria to be tested fresh pure cultures inoculated crossed or coated on the plate, set the temperature of the incubator training requirements were cultured for a predetermined time. 4. Observe the results.
Quality control: The following were inoculated after 36 ± 1 for 24h , the results are as follows: bacteria name bacteria No. growth status colony characteristics Escherichia coli ATCC25922 not good hemolysis
Staphylococcus aureus, ATCC6538 good β-hemolytic
Beta-hemolytic streptococcus CMCC (B) 32210 good β-hemolytic
Streptococcus pneumoniae CMCC (B) 31001 good α-hemolytic
Storage: Store in a dark, cool and dry place, tighten the cap immediately after use. Storage period of three years.