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Vector Laboratories, Inc.
6737 Mowry Ave
Newark, CA 94560
United States
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Customer Service: (800) 227-6666 / (650) 697-3600
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SLC9A1BP / CHP
calcineurin-like EF-hand protein 1
Calcium-binding protein involved in different processes such as regulation of vesicular trafficking, plasma membrane Na+/H+ exchanger and gene transcription. Involved in the constitutive exocytic membrane traffic. Mediates the association between microtubules and membrane-bound organelles of the endoplasmic reticulum and Golgi apparatus and is also required for the targeting and fusion of transcytotic vesicles (TCV) with the plasma membrane. Functions as an integral cofactor in cell pH regulation by controlling plasma membrane-type Na+/H+ exchange activity. Affects the pH sensitivity of SLC9A1/NHE1 by increasing its sensitivity at acidic pH. Required for the stabilization and localization of SLC9A1/NHE1 at the plasma membrane. Inhibits serum- and GTPase-stimulated Na+/H+ exchange. Plays a role as an inhibitor of ribosomal RNA transcription by repressing the nucleolar UBF1 transcriptional activity. May sequester UBF1 in the nucleoplasm and limit its translocation to the nucleolus. Associates to the ribosomal gene promoter. Acts as a negative regulator of the calcineurin/NFAT signaling pathway. Inhibits NFAT nuclear translocation and transcriptional activity by suppressing the calcium-dependent calcineurin phosphatase activity. Also negatively regulates the kinase activity of the apoptosis-induced kinase STK17B. Inhibits both STK17B auto- and substrate-phosphorylations in a calcium-dependent manner.
| Gene Name: | calcineurin-like EF-hand protein 1 |
| Synonyms: | CHP1, Calcium-binding protein p22, Calcineurin B homolog, Calcium binding protein P22, Calcium-binding protein CHP, Calcineurin B-like protein, CHP, p22, SLC9A1 binding protein, SLC9A1BP, Sid470p, Calcineurin homologous protein, p24 |
| Target Sequences: | NM_007236 NP_009167.1 Q99653 |
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