Natural Resistance Associated Macrophage Protein (Nramp2)

For Research Use Only. Not for use in diagnostic procedures.

Chromosome: 1; NC_000067.5 (74421777..74432625). Location: 1 C3; 1 39.2 cM

Polyclonal

IgG

Host: Rabbit
Source: Rat

Thecontrol peptide sequence is 81% conserved in human, mouse and 77% in monkey NRAMP2 without IRE. This sequence is absent in NRAMP2 with IRE. No significant sequence homology exist with NRAMP1. Control peptide, because of its low MW (<3kD), is not suitable for Western. It is recommed for ELISA, dot blot, or for antibody blocking experiments (use 5-10 ug of control peptide per 1 ug of aff pure IgG or 1 ul of antiserum) to demonstrate antibody specificity

Serum

Serum
Supplied as a liquid, neat serum, 40% glycerol.

May be stored at 4 degree C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and add glycerol (40-50%). Freeze at -20 degree C. Aliquots are stable for at least 12 months at -20 degree 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.

Small volumes of anti-Slc11a1 antibody vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Natural resistance to infection with unrelated intracellular parasite such as Mycobacteria, Salmonella, and Leishmania is controlled by a single gene that encodes a macrophage-specific membrane protein designated as Natural Resistance-Associated Macrophage Protein (Nramp1). Recently a second member of NRAMP family, termed NRAMP2/DMT/DCT1 (Divalent Metal ion Transporter 1 or Divalent Cation Transporter 1), has been identified (human, rat and mouse 568 aa, ~65% identity with NRAMP1). Unlike NRAMP1, NRAMP2 expression is more ubiquitous and has been detected in most tissues. It is dramatically up-regulated by iron starvation in the intestine. NRAMP2 gene produces two alternatively spliced transcripts generated by alternative use of two 3\' exons encoding distinct C-termini of the protein as well as distinct 3\' untranslated regions (UTRs). Interestingly, one Nramp2 mRNA contains an iron-responsive element (IRE) in its 3\'UTR. The IRE is an RNA secondary structure present in the 5\'- or the 3\'-UTR of animal mRNAs encoding proteins involved in iron metabolism. The second Nramp2 splice isoform (without-IRE, isoform II) encodes a protein in which the C-terminal 18-aa of the IRE form (with IRE, isoform I) are replaced by a novel 25-aa segment and codes for a distinct 3\' UTR lacking the IRE. The two isoforms are differentially localized and regulated in GI tract and kidney. It has recently been demonstrated that the Nramp2 gene is mutated (Gly185 to Arg at TM4) in both the mk and Belgarde (b) animal models exhibiting a severe microcytic hypochromic anemia marked by a defect in iron absorption by intestinal cells and in erythroid iron use.

Abs to Ion Transport

ELISA, Western Blot

Suitable for use in ELISA, Western Blotting. Other applications not tested.
Dilution: Western Blot: 1:1000-1:5000 for neat serum and 1-10ug/ml for affinity pure antibody using ECL.
ELISA: 1:10,000-50,000 for neat serum and 0.5-1ug/ml for affinity pure. Control peptide can be used to coat ELISA plates at 1ug/ml.
Optimal dilutions to be determined by the researcher.

59,741 Da[Similar Products]

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??(1). Gunshin H et al (1997) Nature 388, 482; Fleming MD et al (1998) PNAS 95, 1148; Kishi F et al (1997) Mol Immunol. 6, 224; Gruenshield S et al (1995) Genomics 25, 514; Fleming MD et al (1997) Nature Genet. 16, 383; Canonne-Hergaux F et al (1999) Blood 93, 4406 (review).

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