Abstract: Human Alkbh1 is a member of the AlkB family of proteins. Like other AlkB family proteins, hAlkbh1 is a Fe2+ and alpha-ketoglutarate-dependent dioxygenase that catalyzes oxidative demethylation of modified nucleotides and amino acids. hAlkbh1 shows activity against six different substrates such as the m6A in ssDNA/ bulge or bubble DNA, m3C in DNA/RNA, methylated lysine in histone H2A, m1A in mitochondrial tRNA for the demethylation, oxidation of m5C in mitochondrial tRNA and lyase cleavage of AP sites in DNA. Also, hAlkbh1 has significant involvement in many cancers, metastasis, developmental defects, hypothermia, etc.