This antibody was generated by immunizing rabbit with a synthetic peptide sequence CRHFSKTNELLQKSGKKP corresponding to amino acids 281-298 of human UNG1 (NP 003353.1) and amino acids 290-307 of human UNG2 (NP 550433.1). The peptide sequence used for immunogen is highly conserved between mammalian and invertabrates.
Mitochondrial (isoform 1). Nuclear (isoform 2).
The synthetic peptide sequence used for immunogen is 100% conserved between UNG1 and UNG2. Thus the antibody recognizes both UNG1 and UNG2. As UNG1 and UNG2 are not resolved as two species in gel electrophoresis (Huag et al., 1998), they are indistinguishable by western blot. The observed molecular weight of UNG (UNG1 and UNG2) on western blots may vary: 26 kDa, 27.5 kDa, 31 kDa, and 38 kDa forms have been described (Bharati et al., 1998; Slupphaug et al., 1993). Please see Kruman et al. (Fig. 1D, 2004) for an example of western blot in rat. This specificity of this antibody has been validated by antisense UNG oligonucleotide (Kruman et al. 2004).
Protein G purified
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The human UNG gene encodes both nuclear (UNG2) and mitochondrial (UNG1) forms of uracil-DNA glycosylase. These forms are generated by alternative splicing and the use of two differentially regulated promoters, PA and PB (Slupphaug et al., 1993; Nilsen et al., 1997) The cDNAs for UNG1 and UNG2 are of similar size (2061 and 2058 bp, respectively) and as a result the corresponding mRNAs are not resolved as two species in gel electrophoresis (Huag et al., 1998). Nuclear UNG2 differs from mitochondrial UNG1 in 44 amino acids of the N-terminal sequence that is not necessary for catalytic activity. A major role of the UNG gene products is to repair mutagenic U:G mispairs caused by cytosine deamination. For example, UNG2 removes misincorporated dUMP residues. The level and expression pattern of UNG1 and UNG2 differs between cell and tissue type (Huag et al. 1998). Additionally, the expression of UNG is cell cycle regulated (Nagelhus et al. 1995). The expression and activity of UNG has been found in general to be higher in proliferating as compared to nonproliferating tissues and cells (reviewed in Kruman et al. 2004). UNG1 is a 304 amino acid protein. UNG2 is a 313 amino acid protein.
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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