PPFIBP1

PTPRF interacting protein, binding protein 1 (liprin beta 1)
Identifiers
Symbols PPFIBP1 ; L2; SGT2; hSGT2; hSgt2p
External IDs OMIM: 603141 MGI: 1914783 HomoloGene: 2685 GeneCards: PPFIBP1 Gene
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez 8496 67533
Ensembl ENSG00000110841 ENSMUSG00000016487
UniProt Q86W92 Q8C8U0
RefSeq (mRNA) NM_001198915 NM_001170433
RefSeq (protein) NP_001185844 NP_001163904
Location (UCSC) Chr 12:
27.52 – 27.7 Mb
Chr 6:
146.89 – 147.03 Mb
PubMed search

Liprin-beta-1 is a protein that in humans is encoded by the PPFIBP1 gene.[1][2][3]

The protein encoded by this gene is a member of the LAR protein-tyrosine phosphatase-interacting protein (liprin) family. Liprins interact with members of LAR family of transmembrane protein tyrosine phosphatases, which are known to be important for axon guidance and mammary gland development. It has been proposed that liprins are multivalent proteins that form complex structures and act as scaffolds for the recruitment and anchoring of LAR family of tyrosine phosphatases. This protein was found to interact with S100A4, a calcium-binding protein related to tumor invasiveness and metastasis. In vitro experiment demonstrated that the interaction inhibited the phosphorylation of this protein by protein kinase C and protein kinase CK2. Alternatively spliced transcript variants encoding distinct isoforms have been reported.[3]

Interactions

PPFIBP1 has been shown to interact with liprin-alpha-1.[1]

References

  1. 1 2 Serra-Pages C, Medley QG, Tang M, Hart A, Streuli M (Jul 1998). "Liprins, a family of LAR transmembrane protein-tyrosine phosphatase-interacting proteins". J Biol Chem 273 (25): 15611–20. doi:10.1074/jbc.273.25.15611. PMID 9624153.
  2. Kriajevska M, Fischer-Larsen M, Moertz E, Vorm O, Tulchinsky E, Grigorian M, Ambartsumian N, Lukanidin E (Feb 2002). "Liprin beta 1, a member of the family of LAR transmembrane tyrosine phosphatase-interacting proteins, is a new target for the metastasis-associated protein S100A4 (Mts1)". J Biol Chem 277 (7): 5229–35. doi:10.1074/jbc.M110976200. PMID 11836260.
  3. 1 2 "Entrez Gene: PPFIBP1 PTPRF interacting protein, binding protein 1 (liprin beta 1)".

Further reading

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