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Overview

Uniprot IDA0A8L2Q1G7
Protein NameCalreticulin
Gene NameCalr
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
143 ICGPGTKKVHVIFNY
151 VHVIFNYKGKNVLIN
153 VIFNYKGKNVLINKD
159 GKNVLINKDIRCKDD
48 KHKSDFGKFVLSSGK
55 KFVLSSGKFYGDQEK

Function

Calcium-binding chaperone that promotes folding, oligomeric assembly and quality control in the endoplasmic reticulum (ER) via the calreticulin/calnexin cycle. This lectin interacts transiently with almost all of the monoglucosylated glycoproteins that are synthesized in the ER. Interacts with the DNA-binding domain of NR3C1 and mediates its nuclear export. Involved in maternal gene expression regulation. May participate in oocyte maturation via the regulation of calcium homeostasis. Present in the cortical granules of non-activated oocytes, is exocytosed during the cortical reaction in response to oocyte activation and might participate in the block to polyspermy

Protein Sequence

10 MLLSVPLLLG 20 LLGLAAADPA 30 IYFKEQFLDG 40 DAWTNRWVES 50 KHKSDFGKFV 60 LSSGKFYGDQ 70 EKDKGLQTSQ 80 DARFYALSAR 90 FEPFSNKGQT 100 LVVQFTVKHE 110 QNIDCGGGYV 120 KLFPGGLDQK 130 DMHGDSEYNI 140 MFGPDICGPG 150 TKKVHVIFNY 160 KGKNVLINKD 170 IRCKDDEFTH 180 LYTLIVRPDN 190 TYEPPKKIKD 200 PDAAKPEDWD 210 ERAKIDDPTD 220 SKPEDWDKPE 230 HIPDPDAKKP 240 EDWDEEMDGE 250 WEPPVIQNPE 260 YKGEWKPRQI 270 DNPDYKGTWI 280 HPEIDNPEYS 290 PDANIYAYDS 300 FAVLGLDLWQ 310 VKSGTIFDNF 320 LITNDEAYAE 330 EFGNETWGVT 340 KAAEKQMKDK 350 QDEEQRLKEE 360 EEDKKRKEEE 370 EAEDKEDEDD 380 RDEDEDEEDE 390 KEEDEEDATG QAKDEL

Gene Ontology

Classification GO ID Description
Cellular Component GO:0060473 cortical granule
Cellular Component GO:0044194 cytolytic granule
Cellular Component GO:0005829 cytosol
Cellular Component GO:0044322 endoplasmic reticulum quality control compartment
Cellular Component GO:0009897 external side of plasma membrane
Cellular Component GO:0005615 extracellular space
Cellular Component GO:0042824 MHC class I peptide loading complex
Cellular Component GO:0005635 nuclear envelope
Cellular Component GO:0048471 perinuclear region of cytoplasm
Cellular Component GO:0005840 ribosome
Cellular Component GO:0033018 sarcoplasmic reticulum lumen
Molecular Function GO:0005509 calcium ion binding
Molecular Function GO:0030246 carbohydrate binding
Molecular Function GO:0001849 complement component C1q complex binding
Molecular Function GO:0005178 integrin binding
Molecular Function GO:0140313 molecular sequestering activity
Molecular Function GO:0003729 mRNA binding
Molecular Function GO:0050681 nuclear androgen receptor binding
Molecular Function GO:0005049 nuclear export signal receptor activity
Molecular Function GO:0044183 protein folding chaperone
Molecular Function GO:0031625 ubiquitin protein ligase binding
Molecular Function GO:0051082 unfolded protein binding
Biological Process GO:0090398 cellular senescence
Biological Process GO:0033144 negative regulation of intracellular steroid hormone receptor signaling pathway
Biological Process GO:0045665 negative regulation of neuron differentiation
Biological Process GO:0048387 negative regulation of retinoic acid receptor signaling pathway
Biological Process GO:0000122 negative regulation of transcription by RNA polymerase II
Biological Process GO:0017148 negative regulation of translation
Biological Process GO:1901164 negative regulation of trophoblast cell migration
Biological Process GO:0002502 peptide antigen assembly with MHC class I protein complex
Biological Process GO:0045787 positive regulation of cell cycle
Biological Process GO:0008284 positive regulation of cell population proliferation
Biological Process GO:2000510 positive regulation of dendritic cell chemotaxis
Biological Process GO:0010595 positive regulation of endothelial cell migration
Biological Process GO:0010628 positive regulation of gene expression
Biological Process GO:0050766 positive regulation of phagocytosis
Biological Process GO:1900026 positive regulation of substrate adhesion-dependent cell spreading
Biological Process GO:0006611 protein export from nucleus
Biological Process GO:0034504 protein localization to nucleus
Biological Process GO:0050821 protein stabilization

Reference

[1] Chen Y, Sun W, Sun Z, Zhao H, Wu T et al.. Effect of electroacupuncture on hippocampal protein lactylation in a rat model of vascular dementia.. Front Neurol 16:1629474. 2025. PMID: 40963935.