HEPACAM2

This gene encodes a protein related to the immunoglobulin superfamily that plays a role in mitosis. Knockdown of this gene results in prometaphase arrest, abnormal nuclear morphology and apoptosis. Poly(ADP-ribosylation) of the encoded protein promotes its translocation to centrosomes, which may stimulate centrosome maturation. A chromosomal deletion including this gene may be associated with myeloid leukemia and myelodysplastic syndrome in human patients.

Full Name

HEPACAM Family Member 2

Function

Required during prometaphase for centrosome maturation. Following poly-ADP-ribosylation (PARsylation) by TNKS, translocates from the Golgi apparatus to mitotic centrosomes and plays a key role in the formation of robust microtubules for prompt movement of chromosomes: anchors AKAP9/CG-NAP, a scaffold protein of the gamma-tubulin ring complex and promotes centrosome maturation.

Biological Process

Cell division Source: UniProtKB-KW
Centrosome cycle Source: UniProtKB

Cellular Location

Spindle; Centrosome; Golgi apparatus membrane; Midbody. In interphase, localizes to the Golgi apparatus. Localizes to centrosomes and spindles during prophase, prometaphase, and metaphase of mitosis, and to midbodies at telophase. Translocation to mitotic centrosomes is the result of poly-ADP-ribosylation (PARsylation).

Topology

Helical: 352-372
Cytoplasmic: 373-462

PTM

Poly-ADP-ribosylated (PARsylated) by tankyrase TNKS during late G2 and prophase, leading to translocation to mitotic centrosomes.
N-glycosylated.