Recombinant Rat Claudin-1 (Cldn1), partial

SKU: P56745

Size: 100ug. Other sizes are also available.

Activity: Not tested

Research Areas: Signal Transduction

Uniprot ID: P56745

Gene Names: Cldn1

Alternative Name(s): Claudin-1

Abbreviation: Recombinant Rat Cldn1 protein, partial

Organism: Rattus norvegicus (Rat)

Source: E.coli

Expression Region: 29-81aa

Protein Length: Partial

Tag Info: N-terminal 10xHis-tagged and C-terminal Myc-tagged

Target Protein Sequence: QWKIYSYAGDNIVTAQAIYEGLWMSCVSQSTGQIQCKVFDSLLNLNSTLQATR

MW: 13.4 kDa

Purity: Greater than 90% as determined by SDS-PAGE.

Endotoxin: Not test

Biological_Activity:

Form: Liquid or Lyophilized powder

Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.

Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.

Relevance: Claudins function as major constituents of the tight junction complexes that regulate the permeability of epithelia. While some claudin family members play essential roles in the formation of impermeable barriers, others mediate the permeability to ions and small molecules. Often, several claudin family members are coexpressed and interact with each other, and this determines the overall permeability. CLDN1 is required to prevent the paracellular diffusion of small molecules through tight junctions in the epidermis and is required for the normal barrier function of the skin. Required for normal water homeostasis and to prevent excessive water loss through the skin, probably via an indirect effect on the expression levels of other proteins, since CLDN1 itself seems to be dispensable for water barrier formation in keratinocyte tight junctions (By similarity).

Reference: "Claudin-1 is not restricted to tight junctions in the rat epididymis." Gregory M., Dufresne J., Hermo L., Cyr D. Endocrinology 142: 854-863(2001)

Function: