Rabbit anti-Human KDM8 Polyclonal Antibody

Uniprot Id

Q8N371

Target Species

Human

Target Name

KDM8

Target Full Name

Bifunctional peptidase and arginyl-hydroxylase JMJD5

Target Function

Bifunctional enzyme that acts both as an endopeptidase and 2-oxoglutarate-dependent monoxygenase. Endopeptidase that cleaves histones N-terminal tails at the carboxyl side of methylated arginine or lysine residues, to generate 'tailless nucleosomes', which may trigger transcription elongation. Preferentially recognizes and cleaves monomethylated and dimethylated arginine residues of histones H2, H3 and H4. After initial cleavage, continues to digest histones tails via its aminopeptidase activity. Upon DNA damage, cleaves the N-terminal tail of histone H3 at monomethylated lysine residues, preferably at monomethylated 'Lys-9' (H3K9me1). The histone variant H3F3A is the major target for cleavage. Additionnally, acts as Fe(2+) and 2-oxoglutarate-dependent monoxygenase, catalyzing (R)-stereospecific hydroxylation at C-3 of 'Arg-137' of RPS6 and 'Arg-141' of RCCD1, but the biological significance of this activity remains to be established. Regulates mitosis through different mechanisms: Plays a role in transcriptional repression of satellite repeats, possibly by regulating H3K36 methylation levels in centromeric regions together with RCCD1. Possibly together with RCCD1, is involved in proper mitotic spindle organization and chromosome segregation. Negatively regulates cell cycle repressor CDKN1A/p21, which controls G1/S phase transition. Required for G2/M phase cell cycle progression. Regulates expression of CCNA1/cyclin-A1, leading to cancer cell proliferation. Also, plays a role in regulating alpha-tubulin acetylation and cytoskeletal microtubule stability involved in epithelial to mesenchymal transition. Regulates the circadian gene expression in the liver. Represses the transcriptional activator activity of the CLOCK-ARNTL/BMAL1 heterodimer in a catalytically-independent manner. Negatively regulates the protein stability and function of CRY1; required for AMPK-FBXL3-induced CRY1 degradation.

Target Subcellular Location

Nucleus. Chromosome.

Target Tissue Specificity

Weakly expressed in most cells. Highly expressed in breast cancer cells. Expressed in embryonic stem cells.

Target Synonyms

FLJ13798; JmjC domain-containing protein 5; JMJD5; JMJD5 protein; jumonji domain containing 5; Jumonji domain-containing protein 5; KDM8_HUMAN; Lysine (K) specific demethylase 8; Lysine-specific demethylase 8

Target Background

This gene likely encodes a histone lysine demethylase. Studies of a similar protein in mouse indicate a potential role for this protein as a tumor suppressor. Alternatively spliced transcript variants have been described.