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GO10001 | ONPG B GAL ASSAY KIT, 5x Lysis Buffer 55ml Standard Dilution Buffer 55ml ONPG Substrate Solution 55ml Stop Buffer 55ml b-gal enzyme 100ul.

ONPG B GAL ASSAY KIT, 5x Lysis Buffer 55... | GO10001 | OZ Biosciences

ONPG B GAL ASSAY KIT

Assays

CSR-CT-DSC-K01 | D-Serine Colorimetric Assay Kit | Cosmo Bio USA available at Bio-Connect | Order online now!

D-Serine Colorimetric Assay Kit | CSR-CT-DSC-K01 | Cosmo Bio USA

D-Serine Colorimetric Assay Kit

Measurement Kit for D-Serine in urine and food samples D-form amino acids have long been known as components of bacterial cell wall peptidoglycan layers. More recent developments in analytical technologies have demonstrated that D-amino acids are also present in mammals and display specificand important physiological activities. Particularly high levels of D-serine levels are present in brain tissue where D-serine functions as an important co-agonist of N-methyl-D-aspartate (NMDA) receptors (NMDR), involved in regulating higher brainfunction such as memory and learning. D-serine is suggested to play a role in neurodegeneration associated with diseases such as Alzheimers disease (AD) and amyotrophic lateral sclerosis (ALS). High levels of free D-serine can also be found in humanurine although its significance is unclear. D-serine is commonly assayed by HPLC or GC following conversion of D-serine to diastereomer derivatives. Such methods are time consuming, require expensive instrumentation, and are not suitable for processing large numbers of samples. The D-Serine Colorimetric Assay Kit employs the D-form specific enzyme D-serine dehydratase from Saccharomyces cerevisiae (DsdSC) enabling the quantitation of D-serine by spectrophotometric measurement. Advantages: 1. Enzymatic reaction with colorimetric detection for reading on standard UV/VIS absorbance microplate readers (340 nm). 2. Suitable for large numbers of samples. 3. Quantitative for D-serine detection. Detection range: 0.01 mM - 1 mM PrincipleofAssay: DsdSC catalyzes the conversion of D-serine to pyruvate and ammonia. In the presence of lactate dehydrogenase (LDH), pyruvate is reduced to lactate with the concomitant oxidation of NADH to NAD. The reaction can be monitored by measuring thedecrease in absorbance at 340nm due to the oxidation of NADH. The D-serine concentration in unknown samples is determined by comparison with a standard curve. Sample: Urine

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