SGLT-3, Mouse Control Peptide (Sodium Glucose Transporter 3)

A 16aa peptide sequence from the N-terminal, cytoplasmic domain 1 of Mouse SGLT-3 .\n\nThe kidneys play a major role in the regulation of glucose levels. Kidneys filter approx. 180 g of glucose per day from the blood, and this is mostly reabsorbed back into the blood in the proximal tubules. Typically, glucose is first absorbed within epithelium by a specific transporter protein, Sodium glucose co transporters (SGLT), in the brush-border membrane and then it is transported out of the cell across the basolateral membranes by a facilitated sugar transporter (GLUTs). At least 3 members of SGLTs (SGLT1-3) have been cloned and characterized from various species. Individual member of this family have identical predicted secondary structures with up to 14 transmembrane domains. SGLT1-3 genes code for protein of approx 659-672 residues (calculated size of ~75kD). Both N and C-termini are predicted to be extracellualr. There is approx 60-70% homology between SGLT1-3. SGLTs transport a-methyl-D-glucoside (a-MDG), a non-metabolized model substrate, in Na-dependent manner. SGLT1 does not discriminate a-MDG, glucose, and galactose. SGLT2/3 do not transport D-galactose efficiently.\n\nSGLT1/NAGT or SLC5A1/NAGT (rat/mouse 665 aa; human 664 aa, chromosome 22q13.1, ~75kD) is a high affinity, Na+-coupled, intestinal responsible for active glucose transport across the brush border membrane. In the kidney, SGLT1 is expressed in proximal tubule Sq1 segments. It is also expressed in the intestine. Defects in SGLT1 gene have been implicated in congenital glucose-galactose malabsorption syndrome (GGM). SGLT2/SLC5A2 (rat/mouse 670 aa; human 672 aa, chromosome 16p11.2) is the low affinity, high capacity Na+-glucose transporter located in the S1 segments of proximal tubules. It is ~60% identical with SGLT1. SGLT2 mediates saturable Na-dependent and phlorizin-sensitive glucose transport. In contrast with SGLT1, SGLT2 does not transport D-galactose. Defect in SGLT2 may be associated with renal glycosuria. SGLT3/SLC54 (pig 660 aa; mouse 656/660/616 aa; human 659 aa, chromosome 22), originally named SAAT1 or pSGLT2, was initially identified in LLC-Pk1 cell line derived from pig renal epithelium. It is also low affinity Na-glucose transporter. It is expressed in kidney, intestine, liver, skeletal muscle and spleen. Like SGLT2, SGLT3 has a low affinity for sugars, and is highly selective for D-glucose and low affinity for D-galactose.\n\nApplications: Suitable for use in ELISA and Anjtibody Blocking. Not suitable for use in Western Blot due to low molecular weight. Other applications not tested.\n\nELISA: 1ug/ml control antigen/well.\nForm:Supplied as a liquid in PBS, pH 7.2, 0.05% sodium azide.\nSpecificity: The mouse peptide sequence is poorly conserved (~37%) in human and pig SGLT3. No significant homology exists with other SGLTs.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. For long-term storage, store at -20 degrees C. Aliquots are stable for at least 6 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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SPECIFICATIONS

Catalog Number

S1010-87L

Size

50ug

Applications

ELISA

Reactivities

Hum, Mouse, Prc

Form

Supplied as a liquid in PBS, pH 7.2

Purity

Highly purified

References

(1) Tatabai Nm et al (2001) Toxicol. Appl. Pharamcol. 177, 163-177; Kong CT et al (1993) JBC 268, 1509-1512; Mackenzie B et al (1994) JBC 269, 22488-22491; Dunham I et al (1999) Nature 402, 489-495; Wright E (2001) Am. J. Physiol. Renal Physiol. 280, F10-F18 (review).

Additional Info

The mouse peptide sequence is poorly conserved (~37%) in human and porcine SGLT3