Lupus test – La antigen lateral flow serology test. Rapidly detect antibodies targeting the human La autoantigen. 10 tests per kit.
About La: The La autoantigen has been implicated to be important for many different cellular processes including RNP maturation, internal ribosome-entry-site-mediated translation, mRNA stabilization, and transcription termination. La binds to the poly U tracts of polymerase III precursor RNAs and certain polymerase II transcribed RNAs.
Attogene La antigen serology test can be used to detect autoantibodies targeting the La Protein found in human Sera and differentiate IgG and IgM.
DBCO-PEG5-NHS Ester is a DBCO-containing PEG linker containing NHS ester that can react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond. PEG5 spacer increases the water solubility of compounds in aqueous media. DBCO is commonly used for copper-free Click Chemistry reaction. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
DBCO-PEG5-NHS Ester is a DBCO-containing PEG linker containing NHS ester that can react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond. PEG5 spacer increases the water solubility of compounds in aqueous media. DBCO is commonly used for copper-free Click Chemistry reaction. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Biocolor’s Purple-Jelley assay kit is the perfect tool for accurate measurement of hyaluronic acid / Hyaluronan levels in your samples. This colorimetric assay is optimised for quantitative analysis in-vivo, tissue-derived hyaluronic acid / Hyaluronan and includes full step-by-step instructions.
Colorimetric Detection (655nm) (Endpoint)
Hyaluronic acid, in its hydrated form, is a unique carbohydrate polymer, often referred to as a ‘gentle giant.’ It consists of a lengthy, flexible, non-branching chain with a repeating disaccharide pattern. This disaccharide is composed of alternating uronic acid and aminosugar units.
Discovering the J-Aggregate Effect in Cyanine DyesIn 1936, Edwin Jelley made a fascinating observation, documented it in a letter to Nature (Nature 138, 1009 – 1010). He noted a peculiar behaviour of certain cyanine dyes, that when dissolved in 5 M NaCl, they dyes exhibited a third absorbance peak at a longer wavelength, around 650nm. In deionized water, however, they displayed only a double peak at approximately 540nm and 570nm. The 650nm peak in concentrated dye solutions resulted from the aggregation of dye molecules and was later termed a ‘J-aggregate,’ in honor of Edwin Jelley. The J-aggregate is known as a supra-molecular complex, formed by stacking individual dye molecules.
Subsequent research in the 1960s, notably by Kay et al. (J. Physical Chem. 68, 1896 – 1906), revealed that various biological polymers, including proteins, DNA, polar lipids, and glycosaminoglycans, could also induce this third absorbance peak. This phenomenon led to the development of the Purple-Jelley assay, named after the purple color of the dye reagent and Edwin Jelley himself.
During the assay, hyaluronic acid is selectively purified during the assay sample preparation protocol. This is then reacted with the Purple-Jelley dye reagent, and the absorption of the characteristic third wavelength recorded. By comparison with a calibration curve the hyaluronic acid content of the sample can be measured.
Step 1. The assay protocol takes tissue samples through a sequential sample preparation protocol which involves enzymatic protein digestion, followed by precipitation and purification of GAGs, culminating in the precipitation of purified Hyaluronic acid.
Step2. The processed sample is then incubated for 10 minutes with the Purple-Jelley dye reagent, forming a coloured product which can be measured spectrophotometrically.
Step 3. The Hyaluronic acid content of unknown samples can be calculated by comparison against a calibration curve prepared using a standard comprising hyaluronic acid (supplied with the kit).
10 – 100µg/ml
10µg/ml
Colorimetric Detection (655nm) (Endpoint)
100 in total (allows a maximum of 46 samples to be run in duplicate alongside a standard curve).
In-vivo: Hyaluronic acid purified from in-vivo tissues. The kit protocol involves extraction and purification of hyaluronic acid prior to reaction with the Purple-Dye reagent.
This kit is designed for research use only. Not for use in diagnostic procedures.
Kit requires access to a centrifuge, as well as a spectrophotometer/colorimeter capable of colorimetric, absorbance detection at 655nm.
Specific sample preparation protocols may require customer to provide further reagents, consult assay manual for further information.
Mode of ActionAssay SpecificationsKit Contents
1. Purple-Jelley Dye Reagent (1x 20ml)
2. Hyaluronan Reference Standard (1x 5ml, 0.2mg/ml soluble Hyaluronic Acid)
3. Precipitating Reagent (2x 34ml)
4. Sodium Chloride (1x 20ml)
5. Cetylpyridinium Chloride (1x 20ml)
6. TRIS-buffered Saline (5x tablets)
7. 2ml screw-cap tubes for preparation of samples.
8. Assay kit manual
NB: Additional reagents may be required for sample preparation prior to assay. Consult manual or contact us for further details.
Biocolor’s Purple-Jelley assay kit is the perfect tool for accurate measurement of hyaluronic acid / Hyaluronan levels in your samples. This colorimetric assay is optimised for quantitative analysis in-vivo, tissue-derived hyaluronic acid / Hyaluronan and includes full step-by-step instructions.
This product is suitable for rapid extraction of RNA from low RNA yield somples such as tissue (＜10mg), cells, bone marrow, fresh blood, and other clinical samples. RNA can be used directly for RT-PCR, Real time PCR, NGS, Viral RNA detection and so on.
Specifications
| Features | Specifications |
| Main Functions | Isolation total RNA from tissue, cell, whole blood |
| Applications | RT-PCR, cDNA synthesis, second generation sequencing |
| Purification method | Polydisperse magnetic beads |
| Purification technology | Magnetic beads technology |
| Process method | Manual or automatic |
| Adaptive instrument | Nucleic acid extractor, pipetting workstation |
| Sample type | Tissues, cells, lymphocytes and other clinical sample |
| Sample amount | Cells grown in suspension: ≤3 x 106Animal tissue: ≤10mgPlant tissue: ≤30mgWhole blood: 0.5~1.0 ml fresh blood or bone marrow and fresh blood mixture |
Kit Contents
| Contents | IVD3020B-96 | IVD3020B |
| Purification Times | 96 Preps | 200 Preps |
| MagPure Particles N | 2.5 ml | 5 ml |
| DNase I | 2 x 600 µl | 4 x 600 µl |
| DNase Buffer C | 60 ml | 120 ml |
| Buffer RLC | 60 ml | 120 ml |
| Buffer MCB* | 60 ml | 150 ml |
| Buffer GW1* | 44 ml | 110 ml |
| Buffer MW2* | 50 ml | 100 ml |
| RNase Free Water | 20 ml | 60 ml |
Storage and Stability
DNase I should be shipped with ice pack and stored at -20°C after arrival. MagPure Particles N should be stored at 2–8°C for long time storage. The remaining kit components can be stored at room temperature(15–25°C) for up to18 months under these conditions.
This product is suitable for rapid extraction of RNA from low RNA yield somples such as tissue (＜10mg), cells, bone marrow, fresh blood, and other clinical samples. RNA can be used directly for RT-PCR, Real time PCR, NGS, Viral RNA detection and so on.
