NAP1L4

This gene encodes a member of the nucleosome assembly protein (NAP) family which can interact with both core and linker histones. It can shuttle between the cytoplasm and nucleus, suggesting a role as a histone chaperone. This gene is one of several located near the imprinted gene domain of 11p15.5, an important tumor-suppressor gene region. Alterations in this region have been associated with the Beckwith-Wiedemann syndrome, Wilms tumor, rhabdomyosarcoma, adrenocortical carcinoma, and lung, ovarian, and breast cancer.

Full Name

Nucleosome Assembly Protein 1 Like 4

Function

Acts as histone chaperone in nucleosome assembly.

Biological Process

Nucleosome assembly Source: UniProtKB

Cellular Location

Nucleus
Cytoplasm 2 Publications
Note: Present in the cytoplasm and excluded from the nucleus during G0/G1 phase, then relocates to the nucleus by the time cells are in S phase (PubMed:9325046). Phosphorylated form localizes in the cytoplasm during the G0/G1 transition, whereas dephosphorylation leads to relocalization into the nucleus at the G1/S-boundary (PubMed:10764593).

PTM

Phosphorylated at the G0/G1 boundary but it is not phosphorylated in S-phase. Phosphorylated protein remains in the cytoplasm in a complex with histones during the G0/G1 transition, whereas dephosphorylation triggers its transport into the nucleus at the G1/S-boundary.
Polyglutamylated by TTLL4, a modification that occurs exclusively on glutamate residues and results in polyglutamate chains on the gamma-carboxyl group. Some residues may also be monoglycylated but not polyglycylated due to the absence of functional TTLL10 in human (By similarity).