Identification
BMDB Protein ID BMDBP02780
Secondary Accession Numbers None
Name Calcineurin B homologous protein 1
Synonyms Not Available
Gene Name CHP1
Protein Type Enzyme
Biological Properties
General Function Involved in calcium ion binding
Specific Function 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 (By similarity).
Pathways Not Available
Reactions Not Available
GO Classification Not Available
Cellular Location Not Available
Gene Properties
Chromosome Location 10
Locus Not Available
SNPs CHP1
Gene Sequence
>588 bp
ATGGGGTCCCGGGCCTCCACGTTACTGCGGGACGAAGAGCTCGAGGAGATCAAGAAGGAA
ACTGGCTTTTCTCACAGTCAGATCACCCGCCTCTACAGCCGGTTCACCAGCCTGGACAAA
GGAGAGAATGGGACTCTCAGCCGGGAAGACTTTCAGCGGATTCCAGAACTTGCCATCAAC
CCATTGGGGGACCGGATCATCAACGCCTTCTTTCCAGAGGGAGAGGACCAGGTAAACTTC
CGGGGATTCATGAGAACCTTGGCTCATTTCCGACCCATTGAGGATAATGAAAAGAGCAAA
GATGTGAATGGACCAGAACCACTCAACAGCCGAAGCAACAAACTGCACTTTGCTTTTCGA
CTGTATGACTTGGATAAAGATGACAAGATCTCCCGTGATGAGCTGTTACAGGTGCTACGC
ATGATGGTCGGAGTGAATATCTCAGATGAGCAGCTGGGCAGCATTGCAGACAGGACCATC
CAGGAGGCTGATCAGGATGGGGACAGCGCCATCTCTTTCACAGAATTTGTTAAGGTTTTG
GAGAAGGTGGACGTAGAACAGAAAATGAGCATCCGATTTCTTCACTAA
Protein Properties
Number of Residues 195
Molecular Weight 22442.0
Theoretical pI 4.72
Pfam Domain Function Not Available
Signals
  • None
Transmembrane Regions
  • 20-39
  • 59-78
  • 109-130
  • 151-175
  • 195-218
Protein Sequence
>Calcium-binding protein p22
MGSRASTLLRDEELEEIKKETGFSHSQITRLYSRFTSLDKGENGTLSREDFQRIPELAIN
PLGDRIINAFFPEGEDQVNFRGFMRTLAHFRPIEDNEKSKDVNGPEPLNSRSNKLHFAFR
LYDLDKDDKISRDELLQVLRMMVGVNISDEQLGSIADRTIQEADQDGDSAISFTEFVKVL
EKVDVEQKMSIRFLH
GenBank ID Protein ABS45031.1
UniProtKB/Swiss-Prot ID Q3SYS6
UniProtKB/Swiss-Prot Entry Name CHP1_BOVIN
PDB IDs Not Available
GenBank Gene ID BT030715
GeneCard ID CHP1
GenAtlas ID Not Available
HGNC ID Not Available
References
General References Not Available