Human FCRL1 HEK293 Overexpression Lysate: Product Information
This Human FCRL1 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of FCRL1 protein (Cat: 11536-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the human FCRL1 (NP_443170.1) extracellular domain (Met 1-Asn 303) was fused with a polyhistidine tag at the C-terminus.
The secreted recombinant human FCRL1 consists of 298 amino acids and has a calculated molecular mass of 32.6 kDa. It migrates as an approximately 45 kDa band in SDS-PAGE under reducing conditions due to glycosylation.
Human FCRL1 HEK293 Overexpression Lysate: Usage Guide
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.
2. Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB) Optimal dilutions/concentrations should be determined by the end user.
Human FCRL1 HEK293 Overexpression Lysate: Alternative Names
Human CD307a Overexpression Lysate; Human FCRH1 Overexpression Lysate; Human IFGP1 Overexpression Lysate; Human IRTA5 Overexpression Lysate
FCRL1 Background Information
Fc receptor-like protein 1, also known as FcR-like protein 1, Fc receptor homolog 1, IFGP family protein 1, Immune receptor translocation-associated protein 5 and FCRL1, is a single-pass type I membrane protein which contains threeIg-like C2-type (immunoglobulin-like) domains. It is a cell-surface membrane protein belonging to FCRL family and is preferentially expressed on B cells. FCRL1 is primarily expressed in secondary lymphoid tissues by mature subsets of B cells. It is detected in spleen, lymph node, heart, skeletal muscle, kidney, liver and placenta. FCRL1 is specifically expressed by mature B lineage cells with higher expression in naive versus memory B cells (at protein level). Human Fc receptor-like molecules (FCRL1, FCRL2, FCRL3, FCRL4, FCRL5) have tyrosine-based immunoregulatory potential and are expressed by B-lineage subpopulations. FCRL1 may function as an activating coreceptor in B cells. It may also function in B cells activation and differentiation.
Fc receptor-like 1
Du X. et al., 2008, Blood. 111 (1): 338-43.
Kazemi T. et al., 2008, Int J Cancer. 123 (9): 2113-9.
Baranov K. et al., 2008, J Immunol Methods. 332 (1-2): 73-81.
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