| Description | The HeLa protein digestion standard is a protein sample derived from HeLa cells and subjected to enzymatic hydrolysis, which is used for mass spectrometry analysis. Its main functions include quality control, method development, quantitative analysis, protein identification, and modification The HeLa protein digestion standard is a protein sample derived from HeLa cells and subjected to enzymatic hydrolysis, which is used for mass spectrometry analysis. Its main functions include quality control, method development, quantitative analysis, protein identification, and modification analysis. It is an indispensable tool in mass spectrometry analysis, capable of improving the accuracy and reliability of the analysis.Storage and Transportation:Storage: The lyophilized powder is stable for 2 years when stored at -20°C or below. The reconstituted and aliquoted product can be stored at -80°C for 1 year. Avoid repeated freezing and thawing!Transportation: It is recommended to transport with ice packs to maintain low temperature.Operating Procedures: 1.Preparation: It is recommended to dissolve the product with 0.1% FA (formic acid) solution. For example: take 1 tube of 20µg HeLa protein digestion standard lyophilized powder, add 40µL of 0.1% FA (formic acid) solution to dissolve it, and vortex to dissolve. The final concentration is 0.5µg/µL, and aliquot for storage.2.Loading: Use an appropriate amount for loading. Generally, 500ng is recommended for a 60-minute gradient, and 1-2µg for a 120-minute gradient. Inject the peptide standard solution into the mass spectrometer for analysis.Precautions and Disclaimer:1.This product is limited to scientific research use by professionals, and shall not be used for clinical diagnosis or treatment, nor for food or drugs.2.For your safety and health, please wear a lab coat and disposable gloves and masks during operation... Read More | Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue StainingDescription:Human B7 homolog 3 (B7-H3) is a member of the B7 family of immune proteins that provide signals for the regulation of immune responses. Other family members include B7-1, B7-2, B7-H1/PD-L1, B7-H2, and PD-L2. B7 Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue StainingDescription:Human B7 homolog 3 (B7-H3) is a member of the B7 family of immune proteins that provide signals for the regulation of immune responses. Other family members include B7-1, B7-2, B7-H1/PD-L1, B7-H2, and PD-L2. B7 family proteins are type I transmembrane immunoglobulin (Ig) superfamily members that contain extracellular Ig V‑like and Ig C‑like domains with a short cytoplasmic tail. Among the family members there is about 20 - 40% amino acid (aa) sequence identity. B7-H3 was initially reported to be a 316 aa type I transmembrane precursor protein that contained a signal sequence, an extracellular region with one V‑type and one C‑type Ig domain, a transmembrane segment and a short cytoplasmic tail. Subsequent studies have identified a second 110 kDa form whose precursor is 534 aa in length. Termed 4IgB7-H3 or B7-H3b, this molecule has two additional Ig-like domains (one V‑type and one C‑type) and shows a ubiquituous expression pattern. It would appear that the human 4Ig form is the principal, if not the only form of B7-H3. Its precursor contains a 26 aa signal sequence, a 435 aa extracellular region, a 31 aa transmembrane domain, and a 42 aa cytoplasmic tail. The four Ig-like domains alternate between V‑type and C‑type, and apparently are the consequence of a V‑C type tandem duplication. B7-H3b is expressed on dendritic cells as well as activated T, B and NK cells. The mouse gene differs from that of human in that it cannot code for four Ig-like domains; only a V‑type:C‑type pair. Human B7-H3b binding to an undefined receptor has shown to be inhibitory to NK cell illing and cytokine release. It also seems to be required for late stage osteoblast differentiation... Read More | Purity>95% SDS-PAGE.FunctionB Cell Activating Factor Receptor (BAFF-R), also named tumor necrosis factor receptor superfamily member 13C, is a member of the TNFR superfamily. It is highly expressed in spleen, lymph node, and resting B cells and to some extent in activated B cells, resting CD4+ Purity>95% SDS-PAGE.FunctionB Cell Activating Factor Receptor (BAFF-R), also named tumor necrosis factor receptor superfamily member 13C, is a member of the TNFR superfamily. It is highly expressed in spleen, lymph node, and resting B cells and to some extent in activated B cells, resting CD4+ cells and peripheral blood leukocytes. BAFF receptor is a type III transmembrane protein containing a single extracellular phenylalanine-rich domain and binds with high specificity to BAFF (TNFSF13B). It enhances B-cell survival in vitro and is a regulator of the peripheral B-cell population. BAFF receptor/BAFF signaling plays a critical role in B cell survival and maturation... Read More | Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining. Description： KLK3 (Kallikrein Related Peptidase 3) is a Protein Coding gene. The gene is one of the fifteen kallikrein subfamily members located in a cluster on chromosome 19. It encodes a single-chain glycoprotein, a Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining. Description： KLK3 (Kallikrein Related Peptidase 3) is a Protein Coding gene. The gene is one of the fifteen kallikrein subfamily members located in a cluster on chromosome 19. It encodes a single-chain glycoprotein, a protease that is synthesized in the epithelial cells of the prostate gland and is present in seminal plasma. KLK3, also known as Prostate Specific Antigen (PSA), kallikrein-related peptidase 3, Gamma-seminoprotein, is a secreted protein of the glandular kallikrein subfamily of serine proteases. KLK3 contains one peptidase S1 domain. KLK3 is a glycoprotein produced almost exclusively by the prostate gland. Growing evidence suggests that many kallikreins are implicated in carcinogenesis and some have potential as novel cancer and other disease biomarkers... Read More | As the most abundant protein in human plasma, human serum albumin (HSA) is the transporter of hormones, lipids and other substances. Its main physiological function is to regulate plasma pH and maintain plasma osmotic pressure.Osrhsa (recombinant human serum albumin from Oryza sativa) is a As the most abundant protein in human plasma, human serum albumin (HSA) is the transporter of hormones, lipids and other substances. Its main physiological function is to regulate plasma pH and maintain plasma osmotic pressure.Osrhsa (recombinant human serum albumin from Oryza sativa) is a recombinant human serum albumin developed by using rice endosperm cell expression platform (oryzhiexp) and purification platform (oryzpur). It does not contain animal derived ingredients and can eliminate the risk of blood derived virus infection. Compared with fetal bovine serum (FBS), plasma derived albumin (pHSA) and bovine serum albumin (BSA), osrhsa has higher purity and better batch stability. It can be used in various research fields, including biopharmaceutical, cell therapy and cell culture of gene therapy. It can replace serum and promote cell growth. At the same time, osrhsa is also widely used in biomedical production as drug carrier, vaccine protector, cell cryoprotectant and medical device embedding agent.ApplicationBiopharmaceuticals, human vaccines, cell culture, cell storage, chemical drug molecular carriers, medical devices, in vitro diagnosis, etc.Comparison of physical and chemical properties between OsrHSA and natural human white pHSAphysicochemical propertiespHSAOsrHSAamino acid sequenceagreementN-terminal amino acidsDAHKSEVDAHKSEVC-terminal amino acidsKLVAASQAALGLKLVAASQAALGLGlycoside modificationnothingmolecular weight (MALDl)66.554 (kDa)66.550 ( a)Isoelectric point (pl)4.84.8Drug binding activityclosethermal stabilitymp 65℃mp 65℃esterase activityidenticalcrystal structureidenticalRestrictions on use:The above products are only suitable for scientific research, laboratory and production use, and cannot be directly used in human body... Read More |