Immunohistochemical staining of human testis with LIG4 polyclonal antibody (Cat # PAB29363) shows moderate nuclear positivity in cells in seminiferus ducts at 1:200-1:500 dilution.
Immunofluorescent staining of human cell line U-251 MG with LIG4 polyclonal antibody (Cat # PAB29363) at 1-4 ug/mL concentration shows positivity in plasma membrane, cytoplasm, focal adhesion sites and nucleus but excluded from the nucleoli.
The protein encoded by this gene is a DNA ligase that joins single-strand breaks in a double-stranded polydeoxynucleotide in an ATP-dependent reaction. This protein is essential for V(D)J recombination and DNA double-strand break (DSB) repair through nonhomologous end joining (NHEJ). This protein forms a complex with the X-ray repair cross complementing protein 4 (XRCC4), and further interacts with the DNA-dependent protein kinase (DNA-PK). Both XRCC4 and DNA-PK are known to be required for NHEJ. The crystal structure of the complex formed by this protein and XRCC4 has been resolved. Defects in this gene are the cause of LIG4 syndrome. Alternatively spliced transcript variants encoding the same protein have been observed. [provided by RefSeq
DNA joinase,DNA ligase IV,DNA repair enzyme,polydeoxyribonucleotide synthase [ATP] 4,polynucleotide ligase,sealase