Recombinant Human Calpain-1 Catalytic Subunit (CAPN1) Protein (His)

Beta LifeScience SKU/CAT #: BLC-03064P
Greater than 90% as determined by SDS-PAGE.
Greater than 90% as determined by SDS-PAGE.

Recombinant Human Calpain-1 Catalytic Subunit (CAPN1) Protein (His)

Beta LifeScience SKU/CAT #: BLC-03064P
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Product Overview

Description Recombinant Human Calpain-1 Catalytic Subunit (CAPN1) Protein (His) is produced by our E.coli expression system. This is a full length protein.
Purity Greater than 90% as determined by SDS-PAGE.
Uniprotkb P07384
Target Symbol CAPN1
Synonyms Ca2 activated neutral protease; Calcium activated neutral proteinase; Calcium activated neutral proteinase small subunit; Calcium dependent protease small subunit 1; Calcium dependent protease small subunit; Calcium-activated neutral proteinase 1; Calpain 1; Calpain 1 large subunit; Calpain 1; (mu/I) large subunit; Calpain mu type; Calpain mu-type; Calpain regulatory subunit; Calpain small subunit 1; Calpain; large polypeptide L1; Calpain-1 catalytic subunit; Calpain-1 large subunit; CAN1_HUMAN; CANP 1; CANP; CANP small subunit; CANP1; CANPL 1; CANPL1; CAPN 1; CAPN1; Cell proliferation inducing protein 30; Cell proliferation-inducing gene 30 protein; Micromolar Calpain; Micromolar-calpain; Mu Calpain; muCANP; muCL
Species Homo sapiens (Human)
Expression System E.coli
Tag N-6His
Target Protein Sequence MSEEIITPVYCTGVSAQVQKQRARELGLGRHENAIKYLGQDYEQLRVRCLQSGTLFRDEAFPPVPQSLGYKDLGPNSSKTYGIKWKRPTELLSNPQFIVDGATRTDICQGALGDCWLLAAIASLTLNDTLLHRVVPHGQSFQNGYAGIFHFQLWQFGEWVDVVVDDLLPIKDGKLVFVHSAEGNEFWSALLEKAYAKVNGSYEALSGGSTSEGFEDFTGGVTEWYELRKAPSDLYQIILKALERGSLLGCSIDISSVLDMEAITFKKLVKGHAYSVTGAKQVNYRGQVVSLIRMRNPWGEVEWTGAWSDSSSEWNNVDPYERDQLRVKMEDGEFWMSFRDFMREFTRLEICNLTPDALKSRTIRKWNTTLYEGTWRRGSTAGGCRNYPATFWVNPQFKIRLDETDDPDDYGDRESGCSFVLALMQKHRRRERRFGRDMETIGFAVYEVPPELVGQPAVHLKRDFFLANASRARSEQFINLREVSTRFRLPPGEYVVVPSTFEPNKEGDFVLRFFSEKSAGTVELDDQIQANLPDEQVLSEEEIDENFKALFRQLAGEDMEISVKELRTILNRIISKHKDLRTKGFSLESCRSMVNLMDRDGNGKLGLVEFNILWNRIRNYLSIFRKFDLDKSGSMSAYEMRMAIESAGFKLNKKLYELIITRYSEPDLAVDFDNFVCCLVRLETMFRFFKTLDTDLDGVVTFDLFKWLQLTMFA
Expression Range 1-714aa
Protein Length Full Length
Mol. Weight 85.9kDa
Research Area Cell Biology
Form Liquid or Lyophilized powder
Buffer Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage 1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function Calcium-regulated non-lysosomal thiol-protease which catalyzes limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction. Proteolytically cleaves CTBP1 at 'Asn-375', 'Gly-387' and 'His-409'.
Subcellular Location Cytoplasm. Cell membrane.
Protein Families Peptidase C2 family
Database References

HGNC: 1476

OMIM: 114220

KEGG: hsa:823

STRING: 9606.ENSP00000279247

UniGene: PMID: 29572388

  • Studies indicate that reactive oxygen and nitrogen species (RONS) and calpain play important roles in the development of airway and pulmonary vascular remodeling in COPD. PMID: 29047085
  • Calpain-1 was significantly expressed in Triple-negative breast cancer tissues varying from low to high with a significant correlation to lymph node status but not with the other clinicopathological variables, suggesting its role as a prognostic factor PMID: 28536704
  • These findings suggest that calpain and AR-V7 may serve as important biomarkers in the treatment of castration-resistant prostate cancer , and targeting calpain and AR-V7 may provide a new approach in overcoming docetaxel-resistance. PMID: 28498452
  • Rare homozygous and compound-heterozygous nonsense, missense, frameshift, and splice-site mutations in CAPN1 were identified in all hereditary spastic paraplegia affected individuals, and sequencing in additional family members confirmed the segregation of these mutations with the disease. PMID: 27153400
  • the cleavage of myoferlin, yielding a membrane-associated dual C2 domain 'mini-myoferlin', is reported. PMID: 28192161
  • mutations in CAPN1 are an additional cause of ataxia in mammals, including humans. PMID: 27320912
  • Calpain-1 expression is associated with poor relapse-free survival in breast cancer patients treated with trastuzumab. PMID: 26496999
  • Regulation of platelet-activating factor-mediated PTP1B activation by a Janus kinase 2/ calpain pathway has been reported. PMID: 28686728
  • HRNR deimination improves its cross-linking by TGases and its proteolytic processing by calpain-1. PMID: 27742573
  • calpains and calpastatin in patients with idiopathic pulmonary arterial hypertension (PAH) and mice with hypoxic or spontaneous (SM22-5HTT(+) strain) PH, were investigated. PMID: 26974350
  • calpain and protein kinase Calpha abnormal release promotes a constitutive release of matrix metalloproteinase 9 in peripheral blood mononuclear cells from cystic fibrosis patients PMID: 27349634
  • Endoplasmic reticulum stress may be associated with apoptosis of LECs, resulting in cataract formation in diabetic patients. PMID: 27130368
  • our findings suggest that the gene/protein expression of both CAPN1 and CAPN2, as well as the ERK1 and ERK2 genes and related proteins, could be molecular factors associated with more invasive tumor behavior in squamous cell laryngeal cancer. PMID: 27456359
  • This study demonstrated that Upregulation of calpain activity precedes tau phosphorylation and loss of synaptic proteins in Alzheimer's disease brain. PMID: 27036949
  • the calpain-dependent cleavage of Nav1.6 channels expressed in human embryonic kidney (HEK) 293 cells caused the upregulation of I(NaP) PMID: 26974309
  • Increased mu-Calpain Activity in Blasts of Common B-Precursor Childhood Acute Lymphoblastic Leukemia Correlates with Their Lower Susceptibility to Apoptosis. PMID: 26317226
  • Data indicate that calpain is responsible for processing translation termination factor eRF3 into its IAP-binding isoform p-eRF3. PMID: 26172506
  • NOS stimulation via PI3K, calpain proteases, and SIRT1-dependent deacetylation downstream from VEGFR2 activation contributes to these vasodilator responses. PMID: 26284543
  • Junctophilin-2 is cleaved by calpain at multiple sites, resulting in dysfunctional junctophilin-2 truncations. PMID: 26063807
  • The results of this study indicated that reductions in kallikrein-6 and calpain-1 may contribute to the accumulation of alpha-synuclein in DLB. PMID: 25476568
  • findings suggest that truncation/activation of Dyrk1A by Ca(2+)/calpain I might contribute to Tau pathology via promotion of exon 10 exclusion and hyperphosphorylation of Tau in AD brain PMID: 25918155
  • 5-LOX inhibition reduced apoptotic death, restored the initial IL-2/INF-gamma ratio, and more importantly reverted micro-calpain activation induced by simulated microgravity. PMID: 25309925
  • the p12/Pol delta is a target as a nuclear substrate of mu-calpain in a calcium-triggered apoptosis and appears to be a potential marker in the study of the chemotherapy of cancer therapies. PMID: 24691096
  • Data show the X-ray structures of calpain with (Z)-3-(4-chlorophenyl)-2-mercaptoacrylic acid and (Z)-3-(5-bromoindol-3-yl)-2-mercaptoacrylic acid. PMID: 25086406
  • CAPN1 anchors to two NCX1 regions and cleaves at methionine-369, leading to NCX1 inactivation in heart failure. PMID: 25336645
  • Besides, calpain-1, a calcium-dependent cysteine protease, was involved inherpes simplex virus type 1 intracellular trafficking. PMID: 24670325
  • Ayloid beta mediates calpain cleavage of NCX3 in Alzheimer's disease brain. PMID: 23919677
  • Increased trophoblast apoptosis and altered expression levels of syncytin-1, calpain 1, and AIF is observed in preeclamptic placentas. PMID: 24413738
  • The PC1 function on JAK2 and ERK signaling pathways might be regulated by calpains in response to the changes in intracellular calcium concentration. PMID: 24416790
  • Small interfering RNA (siRNA)-mediated silencing of micro-calpain expression significantly suppressed the adhesive, migrative and invasive potentials of human hepatoma cells. PMID: 23733271
  • HER2 inhibited calpain-1 activity through upregulating calpastatin, an endogenous calpain inhibitor. PMID: 23707532
  • Calpain activation via Ca(2) flux plays an essential role in eliciting an AIF-mediated, caspase-independent apoptotic pathway in EV71-infected cells. PMID: 23515028
  • a truncated fragment of Src protein kinase generated by calpain-mediated cleavage is a mediator of neuronal death in excitotoxicity PMID: 23400779
  • Extracellular signal-regulated kinase and glycogen synthase kinase 3beta regulate gephyrin postsynaptic aggregation and GABAergic synaptic function in a calpain-dependent mechanism PMID: 23408424
  • Proteolysis of calcineurin A by endogenous calpain I leads to the formation of constitutively active calcineurin in the human heart, which may contribute to the pathogenesis of myocardial disease PMID: 23289183
  • Data indicate that calpain-1 plays a pivotal role in matrix metalloproteinase 2 (MMP2) activation and extracellular matrix remodeling, including fibrosis and vascular calcification. PMID: 23006733
  • Report synthesis of emodin derivatives, emodin carbaldehyde, citreorosein, and their 10-deoxygenated derivatives and their inhibitory activities on mu-calpain. PMID: 22477191
  • Results show that estrogen may contribute to both up-regulation and proteolysis of cyclin E through calpain in MCF-7 cells. PMID: 22449977
  • APP secretion from the calpain overexpressing cells was robustly increased under both resting and stimulated conditions over wild-type cells. PMID: 22480599
  • Overexpression of mu-calpain in the anterior temporal neocortex is associated with intractable epilepsy as well as the clinicopathological characteristics in these patients. PMID: 21315622
  • Data show neutrophil calpain I (mu-calpain) was inactiveted by alpha1-antitrypsin. PMID: 21494752
  • With higher grading of the ovarian carcinoma, staining intensity and immunoreactive score of calpain 1 decreased. PMID: 22335024
  • Results show high levels of the 17-kDa tau fragment and enhanced calpain activity in the temporal cortex of AD patients and in brain samples obtained from patients with other tauopathies. PMID: 21442128
  • The expression of mu-calpain-induced degradation products of extracellular matrix was correlated with the degree of disc degeneration in human intervertebral disc tissue PMID: 21839844
  • siRNA knockdown of calpain prevented deltamethrin-induced DNA fragmentation. PMID: 21555338
  • it is possible to protect cells from paclitaxel-induced degradation of NCS-1 by inhibiting calpain activity PMID: 21808066
  • Data show that transfection of cells with GRP78 or calpain I and calpain II siRNA reduced MPTB-mediated cell apoptosis in chondrosarcoma JJ012 cells PMID: 21374734
  • Findings show that p73alpha and its regulation by the Ca(2+)-mediated calpain pathway are involved in CDDP-induced apoptosis in OVCA cells and that dysregulation of Ca(2+)/calpain/p73 signaling may in part be the pathophysiology of CDDP resistance. PMID: 21516125
  • Rad21 cleavage by calpain-1 promotes separation of chromosome arms, which coincides with a calcium-induced partial loss of cohesin at several chromosomal loci. PMID: 21876002

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    Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

    Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

    Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

    Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

    To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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