Reagents and instruments for immunology, cell biology and molecular biology.
 
Pentoses

Pentoses

Pentoses are a fundamental class of monosaccharides (simple sugars) characterized by containing five carbon atoms in their molecular structure. The general chemical formula for pentoses is C5H10O5, with a molecular weight of approximately 150.13 g/mol. These sugars can exist in an open-chain (linear) form or a closed-chain (cyclic) form, with the cyclic form predominating in aqueous solution due to intramolecular hemiacetal or hemiketal formation.

Structural Classification

Structurally, pentoses are classified into two main types based on the position of their carbonyl group:

  • Aldopentoses: Contain an aldehyde group at carbon 1 (e.g., ribose and deoxyribose).
  • Ketopentoses: Contain a ketone group, commonly at carbon 2 (e.g., ribulose and xylulose).

Pentoses possess multiple chiral centers, leading to various stereoisomers. These stereochemical variations are crucial for their biological functions. D- and L-enantiomers exist, with D-forms generally more prevalent in nature.

Biochemical Roles

Biochemically, pentoses play vital roles, prominently in nucleic acid structure and metabolism. Ribose is the sugar component of RNA and several key cofactors such as ATP, NADH, and FAD. Deoxyribose, a derivative lacking one oxygen atom compared to ribose, is a fundamental constituent of DNA, imparting chemical stability suitable for genetic material storage.

Metabolic Importance

Pentoses are also pivotal in cellular metabolic pathways. Phosphorylated pentoses form key intermediates in the pentose phosphate pathway, which generates nucleotide precursors and reducing equivalents (NADPH) for biosynthesis and antioxidant defense. In photosynthetic organisms, pentoses such as ribulose-1,5-bisphosphate serve as substrates for carbon fixation in the Calvin cycle.


Frequently Asked Questions (FAQ)

Where can I find pentoses products on the Biovalley website?

pentoses products are available in this section and can be sorted by product families or sub-categories, such as Xylose, Lyxose, Ribose. You can browse the catalogue tree or use the search bar with a product name, catalogue reference, brand or supplier.

What types of products are available in the pentoses category?

The pentoses category brings together various product references, consumables, reagents, kits, instruments or laboratory solutions, depending on the relevant product family. The Xylose, Ribulose, Arabinose sub-categories allow you to find the products that meet your needs more quickly.

How can I quickly find a pentoses product?

To find a pentoses product, use the search function by name, product code, supplier, brand or sub-category. You can also browse the product families listed on the page to identify an available product code, an alternative or an equivalent product.

Does Biovalley stock several product codes in the pentoses category?

Yes, Biovalley distributes several product references in the pentoses category, sourced from specialist suppliers. Depending on the product family, references may vary in terms of format, packaging, brand, supplier, technical specifications or availability.

Can I request a quote for pentoses products?

Yes, you can request a quote for pentoses products from the product page or by contacting Biovalley (info@biovalley.fr). To help us process your enquiry, please provide, where possible, the product name, catalogue reference, required quantity, the supplier or brand you are looking for, and the country of delivery.

How can I find out if a pentoses product is available to order?

The availability of a pentoses product depends on the product code, supplier, packaging and country of delivery. For up-to-date information, please check the product details page or contact Biovalley with the product code or name of the product you are looking for.

What should I do if I cannot find the pentoses product I am looking for?

If the pentoses product you are looking for does not appear in the catalogue, please contact Biovalley with the available information: product name, reference number, supplier, brand, format or packaging. The team will be able to search for the reference number within its network of suppliers or suggest an available alternative.

Are all pentoses products available under the same terms and conditions?

No. Ordering, delivery, storage and documentation conditions may vary depending on the product type, the supplier and the applicable regulations. Certain product codes may require specific approval, specialised transport, a safety data sheet or additional information prior to ordering.