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MOB FAMILY, MEMBER 4; MOB4

MOB FAMILY, MEMBER 4; MOB4

Alternative titles; symbolsPHOCEINMOB1-LIKE PROTEIN 3; MOBKL3MOB1MOB3PREIMPLANTATION PROTEIN 3, MOUSE, HOMOLOG OF; PREI3HGNC Approved Gene Symbol: MOB4Cytogeneti...

Alternative titles; symbols

  • PHOCEIN
  • MOB1-LIKE PROTEIN 3; MOBKL3
  • MOB1
  • MOB3
  • PREIMPLANTATION PROTEIN 3, MOUSE, HOMOLOG OF; PREI3

HGNC Approved Gene Symbol: MOB4

Cytogenetic location: 2q33.1 Genomic coordinates (GRCh38): 2:197,515,553-197,553,698 (from NCBI)

▼ Cloning and Expression
Moreno et al. (2001) cloned human and mouse MOB1. The deduced 225-amino acid mouse and human proteins are identical, and the cDNAs share 95% nucleotide identity. Moreno et al. (2001) determined that MOB1 is the class II homolog of yeast Mob1. Immunofluorescence analysis of NIH 3T3 mouse fibroblasts detected Mob1 in a punctate distribution throughout the cytoplasm, with high concentration close to the nuclear membrane. Mob1 colocalized with striatin and S/G2 nuclear autoantigen (Sg2na). Western blot analysis detected MOB1 as a 24-kD doublet.

▼ Gene Function
Moreno et al. (2001) found that inhibition of protein phosphatase-2A (PP2A; see 176915) in NIH 3T3 fibroblasts induced phosphorylation of PP2A-associated mouse Mob1 on serine, as well as hyperphosphorylation of striatin, Sg2na, and 3 other proteins. Immunoprecipitation analysis of NIH 3T3 cells detected about a third of endogenous Mob1 in a complex with striatin and another third associated with Sg2na. Moreno et al. (2001) concluded that MOB1 may be a PP2A substrate that has a role in modulating membrane-cytoskeletal interactions.

▼ Mapping
Gross (2011) mapped the MOBKL3 gene to chromosome 2q33.1 based on an alignment of the MOBKL3 sequence (GenBank AB015441) with the genomic sequence (GRCh37).

Tags: 2q33.1