ADP-ribosylation factor-like protein 4D is a protein that in humans is encoded by the ARL4Dgene.
ADP-ribosylation factor 4D is a member of the ADP-ribosylation factor family of GTP-binding proteins. ARL4D is closely similar to ARL4A and ARL4C and each has a nuclear localization signal and an unusually high guanine nucleotide exchange rate. This protein may play a role in membrane-associated intracellular trafficking. Mutations in this gene have been associated with Bardet–Biedl syndrome (BBS).
Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion. Twenty five tests were carried out on mutant mice and significant abnormalities were observed.Homozygous mutant females had decreased bone mineral content, heart weight, lean body mass and CD8-positive, alpha-beta memory T cell number. Males had abnormal rib morphology with vertebral transformation. Both sexes displayed a reduction in dorsal third ventricle area and hippocampal area.
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