General Information of Target

Target ID LDTP10934
Target Name Calcineurin B homologous protein 1 (CHP1)
Gene Name CHP1
Gene ID 11261
Synonyms
CHP; Calcineurin B homologous protein 1; Calcineurin B-like protein; Calcium-binding protein CHP; Calcium-binding protein p22; EF-hand calcium-binding domain-containing protein p22
3D Structure
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2D Sequence (FASTA)
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3D Structure (PDB)
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Sequence
MALFAVFQTTFFLTLLSLRTYQSEVLAERLPLTPVSLKVSTNSTRQSLHLQWTVHNLPYH
QELKMVFQIQISRIETSNVIWVGNYSTTVKWNQVLHWSWESELPLECATHFVRIKSLVDD
AKFPEPNFWSNWSSWEEVSVQDSTGQDILFVFPKDKLVEEGTNVTICYVSRNIQNNVSCY
LEGKQIHGEQLDPHVTAFNLNSVPFIRNKGTNIYCEASQGNVSEGMKGIVLFVSKVLEEP
KDFSCETEDFKTLHCTWDPGTDTALGWSKQPSQSYTLFESFSGEKKLCTHKNWCNWQITQ
DSQETYNFTLIAENYLRKRSVNILFNLTHRVYLMNPFSVNFENVNATNAIMTWKVHSIRN
NFTYLCQIELHGEGKMMQYNVSIKVNGEYFLSELEPATEYMARVRCADASHFWKWSEWSG
QNFTTLEAAPSEAPDVWRIVSLEPGNHTVTLFWKPLSKLHANGKILFYNVVVENLDKPSS
SELHSIPAPANSTKLILDRCSYQICVIANNSVGASPASVIVISADPENKEVEEERIAGTE
GGFSLSWKPQPGDVIGYVVDWCDHTQDVLGDFQWKNVGPNTTSTVISTDAFRPGVRYDFR
IYGLSTKRIACLLEKKTGYSQELAPSDNPHVLVDTLTSHSFTLSWKDYSTESQPGFIQGY
HVYLKSKARQCHPRFEKAVLSDGSECCKYKIDNPEEKALIVDNLKPESFYEFFITPFTSA
GEGPSATFTKVTTPDEHSSMLIHILLPMVFCVLLIMVMCYLKSQWIKETCYPDIPDPYKS
SILSLIKFKENPHLIIMNVSDCIPDAIEVVSKPEGTKIQFLGTRKSLTETELTKPNYLYL
LPTEKNHSGPGPCICFENLTYNQAASDSGSCGHVPVSPKAPSMLGLMTSPENVLKALEKN
YMNSLGEIPAGETSLNYVSQLASPMFGDKDSLPTNPVEAPHCSEYKMQMAVSLRLALPPP
TENSSLSSITLLDPGEHYC
Target Bioclass
Transporter and channel
Family
Calcineurin regulatory subunit family, CHP subfamily
Subcellular location
Nucleus
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.
Uniprot ID
Q99653
Ensemble ID
ENST00000334660.10
HGNC ID
HGNC:17433

Probe(s) Labeling This Target

ABPP Probe
Click To Hide/Show 5 Probe Related to This Target
Probe name Structure Binding Site(Ratio) Interaction ID Ref
STPyne
 Probe Info 
K40(4.55)  LDD0277  [1]
OPA-S-S-alkyne
 Probe Info 
K188(1.18)  LDD3494  [2]
5E-2FA
 Probe Info 
H25(0.00); H89(0.00)  LDD2235  [3]
m-APA
 Probe Info 
H25(0.00); H89(0.00)  LDD2231  [3]
Acrolein
 Probe Info 
N.A.  LDD0217  [4]

Competitor(s) Related to This Target

Competitor ID Name Cell line Binding Site(Ratio) Interaction ID Ref
 LDCM0109  NEM HeLa H89(0.00); H25(0.00)  LDD0227  [4]

The Interaction Atlas With This Target

The Protein(s) Related To This Target

Transporter and channel
Click To Hide/Show 1 Protein(s) Interacting with This Target
Protein name Family Uniprot ID
Sodium/hydrogen exchanger 1 (SLC9A1) Monovalent cation:proton antiporter 1 (CPA1) transporter (TC 2.A.36) family P19634

The Drug(s) Related To This Target

Approved
Click To Hide/Show 3 Drug(s) Interacting with This Target
Drug Name Drug Type External ID
Calcium Phosphate Small molecular drug DB11348
Calcium Phosphate Dihydrate Small molecular drug DB14481
Calcium Citrate . DB11093

References

1 A Paal-Knorr agent for chemoproteomic profiling of targets of isoketals in cells. Chem Sci. 2021 Oct 15;12(43):14557-14563. doi: 10.1039/d1sc02230j. eCollection 2021 Nov 10.
Mass spectrometry data entry: PXD028270
2 A chemical proteomics approach for global mapping of functional lysines on cell surface of living cell. Nat Commun. 2024 Apr 8;15(1):2997. doi: 10.1038/s41467-024-47033-w.
Mass spectrometry data entry: PXD042888
3 Global profiling of functional histidines in live cells using small-molecule photosensitizer and chemical probe relay labelling. Nat Chem. 2024 Jun 4. doi: 10.1038/s41557-024-01545-6. Online ahead of print.
Mass spectrometry data entry: PXD042377
4 ACR-Based Probe for the Quantitative Profiling of Histidine Reactivity in the Human Proteome. J Am Chem Soc. 2023 Mar 8;145(9):5252-5260. doi: 10.1021/jacs.2c12653. Epub 2023 Feb 27.