Recombinant Human Caprin-1 (CAPRIN1) Protein (His)

Name: Recombinant Human Caprin-1 (CAPRIN1) Protein (His)
Brand: Beta LifeScience
SKU: BLC-03800P
Availability: InStock

Based on the SEQUEST from database of Baculovirus host and target protein, the LC-MS/MS Analysis result of this product could indicate that this peptide derived from Baculovirus-expressed Homo sapiens (Human) CAPRIN1.

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Product Overview

Description	Recombinant Human Caprin-1 (CAPRIN1) Protein (His) is produced by our Baculovirus expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	Q14444
Target Symbol	CAPRIN1
Synonyms	activation/proliferation-associated protein 1; CAPR1_HUMAN; Caprin-1; CAPRIN1; Cell cycle-associated protein 1; Cytoplasmic activation- and proliferation-associated protein 1; cytoplasmic activation/proliferation-associated protein-1; GPI-anchored membrane protein 1; GPI-anchored protein p137; GPI-p137; GPIAP1; GPIP137; M11S1; Membrane component chromosome 11 surface marker 1; p137GPI; RNA granule protein 105; RNG105
Species	Homo sapiens (Human)
Expression System	Baculovirus
Tag	N-10His
Target Protein Sequence	PSATSHSGSGSKSSGPPPPSGSSGSEAAAGAGAAAPASQHPATGTGAVQTEAMKQILGVIDKKLRNLEKKKGKLDDYQERMNKGERLNQDQLDAVSKYQEVTNNLEFAKELQRSFMALSQDIQKTIKKTARREQLMREEAEQKRLKTVLELQYVLDKLGDDEVRTDLKQGLNGVPILSEEELSLLDEFYKLVDPERDMSLRLNEQYEHASIHLWDLLEGKEKPVCGTTYKVLKEIVERVFQSNYFDSTHNHQNGLCEEEEAASAPAVEDQVPEAEPEPAEEYTEQSEVESTEYVNRQFMAETQFTSGEKEQVDEWTVETVEVVNSLQQQPQAASPSVPEPHSLTPVAQADPLVRRQRVQDLMAQMQGPYNFIQDSMLDFENQTLDPAIVSAQPMNPTQNMDMPQLVCPPVHSESRLAQPNQVPVQPEATQVPLVSSTSEGYTASQPLYQPSHATEQRPQKEPIDQIQATISLNTDQTTASSSLPAASQPQVFQAGTSKPLHSSGINVNAAPFQSMQTVFNMNAPVPPVNEPETLKQQNQYQASYNQSFSSQPHQVEQTELQQEQLQTVVGTYHGSPDQSHQVTGNHQQPPQQNTGFPRSNQPYYNSRGVSRGGSRGARGLMNGYRGPANGFRGGYDGYRPSFSNTPNSGYTQSQFSAPRDYSGYQRDGYQQNFKRGSGQSGPRGAPRGRGGPPRPNRGMPQMNTQQVN
Expression Range	2-709aa
Protein Length	Full Length of Mature Protein
Mol. Weight	80.7 kDa
Research Area	Others
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	May regulate the transport and translation of mRNAs of proteins involved in synaptic plasticity in neurons and cell proliferation and migration in multiple cell types. Binds directly and selectively to MYC and CCND2 RNAs. In neuronal cells, directly binds to several mRNAs associated with RNA granules, including BDNF, CAMK2A, CREB1, MAP2, NTRK2 mRNAs, as well as to GRIN1 and KPNB1 mRNAs, but not to rRNAs.
Subcellular Location	Cytoplasm, cytosol. Cell projection, dendrite. Cell projection, lamellipodium.
Protein Families	Caprin family
Database References	HGNC: 6743 OMIM: 601178 KEGG: hsa:4076 STRING: 9606.ENSP00000340329 UniGene: PMID: 29037839 Based on insights from the structures and existing biochemical data, the existence of an evolutionarily conserved ribonucleoprotein (RNP) complex consisting of Caprin-1, FMRP and G3BP1 is proposed. PMID: 27303792 Data suggest that DEAD-box helicase 3 (DDX3X) physically interacts and co-localizes with poly(A)-binding cytoplasmic protein 1 (PABPC1) and caprin-1 in lamellipodia at the leading edge of spreading cells; these interactions are dependent on mRNA; depletion of DDX3X (via gene silencing with the CRISPR-Cas system) leads to decreased cell motility. These studies were conducted using MRC5 lung fibroblast cell line. PMID: 28733330 G3BP mediates the condensation of stress granules by shifting between two different states that are controlled by the phosphorylation of S149 and by binding to Caprin1 or USP10. PMID: 27022092 The G3BP1-Caprin1-PKR complex represents a new mode of PKR activation and is important for antiviral activity of G3BP1 and PKR during infection with mengovirus. PMID: 25784705 Data show that tylophorine compounds exert anti-cancer activity predominantly by targeting and sequestering the caprin-1 protein and c-Myc mRNA associated ribonucleoprotein complex. PMID: 25669982 G3BP1, G3BP2 and CAPRIN1 are required for translation of interferon stimulated mRNAs and are targeted by a dengue virus non-coding RNA. PMID: 24992036 Cyr61/Caprin-1 co-expression was associated with worse survival. PMID: 23528710 These results suggest that the Japanese encephalitis virus core protein circumvents translational shutoff by inhibiting stress granule formation through an interaction with Caprin-1 and facilitates viral propagation in vitro and in vivo. PMID: 23097442 Fragile mental retardation protein interacts with the RNA-binding protein Caprin1 in neuronal RiboNucleoProtein complexes PMID: 22737234 Homologous region-1 (HR-1) is a novel protein domain that has been identified near the N-terminus of human caprin-1; highly conserved in vertebrates and insects, it is also present in the human caprin-2 paralog. PMID: 14764709 involvement of cellular protein p137 in transcription of intermediate stage genes may regulate the transition between early and late phases of vaccinia virus replication PMID: 15471883 Suppression of expression of human Caprin-1 results in slowing of the proliferation rate, due to prolongation of the G1 phase of the cell cycle, formally demonstrating that Caprin-1 is essential for normal cellular proliferation. PMID: 16177067 Caprin-1/G3BP-1 complex is likely to regulate the transport and translation of mRNAs of proteins involved with synaptic plasticity in neurons PMID: 17210633 MiR-16 negatively regulate HMGA1 and caprin-1 which are involved in cell proliferation. PMID: 19250063

FAQs

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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.