Kindred of IgLON (Kilon; also neuronal growth regulator 1 (NEGR1) and neurotractin) is a 46 kDa member of the IgLON family of molecules. This cell adhesion family includes the proteins LAMP, OBCAM, neurotrimin, CEPU-1, AvGP50, and GP55 (1). Human Kilon is synthesized as a 354 amino acid (aa) precursor that contains a 37 aa signal sequence, a 287 aa mature chain, and a 30 aa propeptide. The mature chain consists of three C2 Ig-like domains, six potential sites for N-linked glycosylation, and a GPI anchor. In addition, there are three sets of cysteines that have the potential to form intradomain disulfide linkages in each of the mature chain's Ig-like domains (1). Human Kilon shares 97% aa sequence identity with mouse and rat Kilon. Expression of Kilon is restricted to the brain, specifically in the cerebrum, brain stem, and hippocampus, with much less expression in the cerebellum (1). In the rat, it was shown that Kilon is already expressed in the E16 stage, and its level gradually increases during development (1). In the cerebral cortex, numerous puncta of Kilon immunoreactivity were visible in all regions, and most were densely distributed in large neurons of layer V (1). These neurons were identified as pyramidal neurons because of their soma location in layer V, large soma size, and extension of their apical dendrite to layer I (1). Kilon may be involved in cell-adhesion and may function as a trans-neural growth-promoting factor in regenerative axon sprouting in the mammalian brain (1, 2).
Human/Mouse Kilon/NEGR1 Antibody
R&D Systems | Catalog # AF5394
Key Product Details
Species Reactivity
Validated:
Human, Mouse
Cited:
Mouse
Applications
Validated:
Western Blot
Cited:
Immunohistochemistry, Western Blot
Label
Unconjugated
Antibody Source
Polyclonal Goat IgG
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Product Specifications
Immunogen
Mouse myeloma cell line NS0-derived recombinant human Kilon/NEGR1
Val38-Gly324
Accession # Q7Z3B1
Val38-Gly324
Accession # Q7Z3B1
Specificity
Detects Kilon/NEGR1 in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant human (rh) LAMP and rhNCAM-L1 is observed.
Clonality
Polyclonal
Host
Goat
Isotype
IgG
Scientific Data Images for Human/Mouse Kilon/NEGR1 Antibody
Detection of Human and Mouse Kilon/NEGR1 by Western Blot.
Western blot shows lysates of human brain cortex and mouse brain tissue. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human/Mouse Kilon/NEGR1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5394) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Kilon/NEGR1 at approximately 46 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.Detection of Kilon/NEGR1 by Western Blot
Negr1 overexpression halts neuroblastoma growth in vitro and in vivo. (A) Western blot analysis of human neuroblastoma (SH5Y), glioblastoma (U87), murine neuroblastoma (N2a), and murine primary cortical neurons. Samples were stained with anti-Negr1 and anti-actin antibodies. (B) We generated stable N2a clones overexpressing Negr1. We validated Negr1 expression by Western blotting. (C) We analyzed the proliferation rate of wild-type N2a cells and of two different clones stably expressing Negr1 (colonies 3 and 11). N2a clones were seeded at a fixed amount (2 × 103 cells/cm2) at day 0. At DIV5, we counted cell number; n = 12, ** p < 0.01 vs. wild-type. (D) We seeded 2 × 103 cells/cm2 N2a wild-type or stably expressing Negr1 (col3 and 11) cells in soft-agar and cultured them for 14 days. Next, we stained cells with crystal violet. (E) The graph reports the number of colonies (cluster encompassing more than 50 cells); n = 6, ** p < 0.01 vs. wild-type. (F) We subcutaneously injected 1 million N2a cells (wild-type, clone 3, and clone 11) in CD1 immunodeficient nude mice. We monitored tumor growth on days 3, 5, 7, 9, 13, and 15 after injection. The image shows representative tumor masses, scale bar = 1 cm. (G) The graph reports tumor volume; n = 6, ** p < 0.01 vs. wild-type. (H) We analyzed tumors by biochemical means. (I) The graph reports N-MYC levels, normalized over S6RP amount, and expressed as fold over wild-type derived tumors (ctrl), ** p < 0.01, *** p < 0.001 vs. wild-type. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/37765276), licensed under a CC-BY license. Not internally tested by R&D Systems.Detection of Kilon/NEGR1 by Western Blot
Negr1 overexpression halts neuroblastoma growth in vitro and in vivo. (A) Western blot analysis of human neuroblastoma (SH5Y), glioblastoma (U87), murine neuroblastoma (N2a), and murine primary cortical neurons. Samples were stained with anti-Negr1 and anti-actin antibodies. (B) We generated stable N2a clones overexpressing Negr1. We validated Negr1 expression by Western blotting. (C) We analyzed the proliferation rate of wild-type N2a cells and of two different clones stably expressing Negr1 (colonies 3 and 11). N2a clones were seeded at a fixed amount (2 × 103 cells/cm2) at day 0. At DIV5, we counted cell number; n = 12, ** p < 0.01 vs. wild-type. (D) We seeded 2 × 103 cells/cm2 N2a wild-type or stably expressing Negr1 (col3 and 11) cells in soft-agar and cultured them for 14 days. Next, we stained cells with crystal violet. (E) The graph reports the number of colonies (cluster encompassing more than 50 cells); n = 6, ** p < 0.01 vs. wild-type. (F) We subcutaneously injected 1 million N2a cells (wild-type, clone 3, and clone 11) in CD1 immunodeficient nude mice. We monitored tumor growth on days 3, 5, 7, 9, 13, and 15 after injection. The image shows representative tumor masses, scale bar = 1 cm. (G) The graph reports tumor volume; n = 6, ** p < 0.01 vs. wild-type. (H) We analyzed tumors by biochemical means. (I) The graph reports N-MYC levels, normalized over S6RP amount, and expressed as fold over wild-type derived tumors (ctrl), ** p < 0.01, *** p < 0.001 vs. wild-type. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/37765276), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human/Mouse Kilon/NEGR1 Antibody
Application
Recommended Usage
Western Blot
1 µg/mL
Sample: Human brain cortex and mouse brain tissue
Sample: Human brain cortex and mouse brain tissue
Formulation, Preparation, and Storage
Purification
Antigen Affinity-purified
Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: Kilon/NEGR1
References
- Funatsu, N. et al. (1999) J. Biol. Chem. 274:8224.
- Marg, A. et al. (1999) J. Cell Biol. 145:865.
Long Name
A Kindred of IgLON /Neuronal Growth Regulator 1
Alternate Names
NEGR1, Neurotractin, Ntra
Gene Symbol
NEGR1
UniProt
Additional Kilon/NEGR1 Products
Product Documents for Human/Mouse Kilon/NEGR1 Antibody
Certificate of Analysis
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Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human/Mouse Kilon/NEGR1 Antibody
For research use only
Related Research Areas
Citations for Human/Mouse Kilon/NEGR1 Antibody
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- R&D Systems Quality Control Western Blot Protocol
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
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