In undiluted form or diluted to working concentration, this material may be stored at -20°C in aliquots up to the recommended retest date for the specific lot. This data is published in the Certificate of Analysis. Avoid repeated freeze/thaw cycles. The solution may be transferred to smaller vials in working volumes for long-term storage. Plastic vials are recommended as this protein tends to adhere to glass. Please see the link below to access the product datasheet for additional details:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/409/686/l2020pis-ms.pdf
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Informazioni su questo articolo
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Nome del prodotto
Laminina, 1-2 mg/mL in Tris-buffered saline, 0.2 μm filtered, BioReagent, suitable for cell culture
Origine biologica
mouse (Engelbreth-Holm-Swarm mouse sarcoma basement membrane)
Livello qualitativo
Nome Commerciale
BioReagent
Stato
aqueous solution
PM
A subunit 400 kDa
B1 subunit 210 kDa
B2 subunit 200 kDa
Confezionamento
pkg of 1 mg
Concentrazione
1-2 mg/mL in Tris-buffered saline
tecniche
cell culture | mammalian: suitable
Copertura della superficie
1‑2 μg/cm2
Impurezze
Microbial Contamination, passes test
N° accesso NCBI
Specificità del legame
Peptide Source: Collagen
Condizioni di spedizione
dry ice
Temperatura di conservazione
−20°C
Informazioni sul gene
mouse ... Lama1(16772), Lamb1(16777), Lamc1(226519), Lamc2(16782)
Cerchi prodotti simili? Visita Guida al confronto tra prodotti
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Questo articolo | L6274 | C0543 | 11243217001 |
|---|---|---|---|
| technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable |
| biological source mouse (Engelbreth-Holm-Swarm mouse sarcoma basement membrane) | biological source human placenta | biological source mouse (Engelbreth-Holm-Swarm murine sarcoma basement membrane) | biological source mouse (Engelbreth-Holm-Swarm (EHS) sarcoma) |
| concentration 1-2 mg/mL in Tris-buffered saline | concentration 0.5 mg/mL in Tris-buffered saline | concentration - | concentration - |
| Quality Level 300 | Quality Level 300 | Quality Level 200 | Quality Level 100 |
| mol wt A subunit 400 kDa, B2 subunit 200 kDa, B1 subunit 210 kDa | mol wt - | mol wt - | mol wt 900 kDa |
| form aqueous solution | form liquid | form lyophilized powder | form solution |
Descrizione generale
Applicazioni
Azioni biochim/fisiol
Nota sulla preparazione
Altre note
Esclusione di responsabilità
Prodotti correlati
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves, type N95 (US)
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Protocolli
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Contenuto correlato
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How long can stocks be frozen at -20C for?
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How will the product L2020 shipped? Will it be shipped in room temperature, on ice, or on dry ice?
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The product L2020 will be shipped using dry ice. Upon receipt, it should be stored at -20 degrees Celsius.
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How is this laminin concentration determined? (by which method?) I tried to measure the concentration of this product by ELISA, and the results always came out half of what is written on the vial.. what is the protein purity?
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Laminin concentration is 1.0 - 2.0 mg protein/ml. The protein content is determined by Lowry method. Please refer the attached document for more details. https://www.sigmaaldrich.com/specification-sheets/131/942/L2020-1MG_________SIGMA____.pdf
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What is the purity of Laminin, Product L2020?
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We do not determine a purity of this product. An SDS PAGE gel is run and the pattern (3 bands) is comparable to past lots.
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How can I store solutions of Laminin, Product L2020?
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The product has a recommended storage temperature of -20°C. Please note, the product needs to be thawed slowly at 2-8°C. If the product has been warmed up at room temperature and it gels, it cannot be reactivated for use. We recommend storage at 2-8°C for up to one week. For longer storage, the product needs to be frozen at -20°C in single-use aliquots.
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What type of laminin is Product L2020?
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In the nomenclature system by Burgeson, this is Laminin 1. The laminins were numbered with Arabic numerals in the order discovered. The previous A, B1, and B2 chains, and their isoforms are listed by the Greek letters, for alpha, beta, and gamma, respectively, followed by an Arabic numeral to identify the isoforms. For example, the first laminin identified from the Engelbreth-Holm-Swarm tumor (EHS) was designated laminin-1 with the chain composition α-1/β-1/γ-1. The genes for these 3 chains are LAMA1, LAMB1, and LAMC1. Reference: Burgeson, R.E., et al., A new nomenclature for the laminins. Matrix Biol., 14, 209-211 (1994).
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What is the protein concentration of the solution of Product L2020, Laminin?
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The protein specification for L2020 is 1.0 to 2.0 mg/mL. The exact value can be found on the lot-specific Certificate of Analysis, which can be downloaded from our website.
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Can I coat Laminin, Product L2020, on top of poly-L-lysine for better adherence?
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When coating coverslips or slides for use with neural stem cells (neurospheres), the following procedure is recommended. Precoat the coverslips with poly-L-lysine (Product No. P5899) at 100 μg/mL. This is incubated for 30 minutes or more at room temperature. The coverslips are then washed with sterile water and allowed to dry. The poly-lysine coated coverslips can be stored at room temperature until ready to use (up to ~1 month). Coverslips are then coated with 30 - 50 μL of warmed laminin, which is at a concentration of 50 μg/mL. Incubate at 37°C for 30 minutes. Remove the laminin, and wash with DME (50 μL) twice. Cells are then added to the coverslips.
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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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