Transcobalamin II Antibody

Images

 
Western blot shows lysates of HUVEC human umbilical vein endothelial cells and RPMI 8226 human multiple myeloma cell line. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human/Mouse/Rat Transcobalamin II Antigen ...read more
Transcobalamin II was detected in immersion fixed paraffin-embedded sections of human kidney using Sheep Anti-Human/Mouse/Rat Transcobalamin II Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7895) at 10 ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications WB, IHC
Clonality
Polyclonal
Host
Sheep
Conjugate
Unconjugated
Concentration
LYOPH

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Catalog# & Formulation Size Price

Transcobalamin II Antibody Summary

Immunogen
Chinese hamster ovary cell line CHO-derived recombinant human Transcobalamin II
Glu19-Trp427
Accession # P20062
Specificity
Detects human Transcobalamin II in direct ELISAs and Western blots.
Source
N/A
Isotype
IgG
Clonality
Polyclonal
Host
Sheep
Gene
TCN2
Purity
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Western Blot 1 ug/mL
  • Immunohistochemistry 5-15 ug/mL

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Preservative
No Preservative
Concentration
LYOPH
Purity
Immunogen affinity purified
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Transcobalamin II Antibody

  • D22S676
  • D22S750
  • macrocytic anemia
  • TC
  • TC-2
  • TC2II
  • TCII
  • TCN2
  • Transcobalamin II
  • transcobalamin II; macrocytic anemia
  • transcobalamin IITC II
  • transcobalamin-2
  • Vitamin B12-binding Protein 2

Background

TCN2 (Transcobalamin II; also TC-2 or TC) is a 42-44 kDa, monomeric, secreted member of the eukaryotic cobalamin transport family of molecules. It is a key player in the transport and absorption of VitB12. TCN1 is a salivary gland protein that binds oral/dietary B12. Once in the stomach, B12 is transferred to IF/Intrinsic Factor, and this complex remains intact during passage through the small intestine. In the distal ileum, the IF:VitB12 complex is internalized following binding to cubam on enterocyte membranes. Once internalized, VitB12 is processed and re-expressed on MRP1 on the enterocyte's basal surface. Here it is transferred to TCN-2, a binding protein secreted by endothelial cells that accounts for the transport of anywhere from 10-30% of circulating VitB12/cobalamin. The TCN2:VitB12 complex is ultimately internalized by cells expressing a membrane-bound, 58 kDa TCN2 receptor termed TCblR. Once internalized, VitB12 is released and converted into cofactors that are involved in methionine biosynthesis. Human TCN2 is synthesized as a 427 amino acid (aa) precursor that contains an 18 aa signal sequence, plus a 409 aa mature region that binds one VitB12 molecule. There are three potential splice variants of TCN2. One contains a Trp substitution for aa 116-143, a second possesses an Ile substitution for aa 336-427, and a third shows a deletion of aa 143-193. There is one Arg-to-Pro transition at position 259 that is correlated with statistically elevated circulating levels of TCN2. Over aa 19-427, human TCN2 shares 72% aa sequence identity with mouse TCN2.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Bioinformatics

Gene Symbol TCN2
Uniprot