CMAH antibody

Principal name

CMAH antibody

Alternative names for CMAH antibody

CMP-NeuAc hydroxylase-like protein, Putative cytidine monophosphate-N-acetylneuraminic acid hydroxylase-like protein

SwissProt ID

O19074 (Pig), Q61419 (Mouse), Q8AVF5 (Xenla), Q9Y471 (Human)

Gene ID

8418 (CMAHP)

Ncbi ID

9606

Available reactivities

Hu (Human)

Available hosts

Mouse, Rabbit

Available applications

Enzyme Immunoassay (E), Western blot / Immunoblot (WB), Paraffin Sections (P)

Background of CMAH antibody

Sialic acids are terminal components of the carbohydrate chains of glycoconjugates involved in ligand-receptor, cell-cell, and cell-pathogen interactions. The two most common forms of sialic acid found in mammalian cells are N-acetylneuraminic acid (Neu5Ac) and its hydroxylated derivative, N-glycolylneuraminic acid (Neu5Gc). Studies of sialic acid distribution show that Neu5Gc is not detectable in normal human tissues although it was an abundant sialic acid in other mammals. Neu5Gc is, in actuality, immunogenic in humans. The absense of Neu5Gc in humans is due to a deletion within the human gene CMAH encoding cytidine monophosphate-N-acetylneuraminic acid hydroxylase, an enzyme responsible for Neu5Gc biosynthesis. Sequences encoding the mouse, pig, and chimpanzee hydroxylase enzymes were obtained by cDNA cloning and found to be highly homologous. However, the homologous human cDNA differs from these cDNAs by a 92-bp deletion in the 5' region. This deletion, corresponding to exon 6 of the mouse hydroxylase gene, causes a frameshift mutation and premature termination of the polypeptide chain in human. It seems unlikely that the truncated human hydroxylase mRNA encodes for an active enzyme explaining why Neu5Gc is undetectable in normal human tissues. Human genomic DNA also shows evidence of this deletion which does not occur in the genomes of African great apes. Nonetheless, the CMAH gene maps to 6p21.32 in humans and great apes indicating that mutation of the CMAH gene occurred following human divergence from chimpanzees and bonobos.

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Primary Antibodies

Catalog No. Host Iso. Clone Pres. React. Applications  

CMAH antibody

CMAH Mouse Serum Hu E, WB
50 µl / €290.00
  Abnova Taiwan Corp.

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