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SEMA4A cell lysate

Human SEMA4A HEK293 Overexpression Lysate

Gene Names
SEMA4A; RP35; SEMB; SEMAB; CORD10
Applications
Western Blot
Synonyms
SEMA4A; Human SEMA4A HEK293 Overexpression Lysate; Human Semaphorin 4A/SEMA4A/Semaphorin B HEK293 Cell Lysate (WB positive control); semaphorin 4A; Human CORD10 Overexpression Lysate; Human RP35 Overexpression Lysate; Human SEMAB Overexpression Lysate; Human SEMB Overexpression Lysate; SEMA4A cell lysate
Ordering
For Research Use Only!
Host
HEK293 Cells
Form/Format
1x Sample Buffer (1x modified RIPA buffer+1x SDS loading buffer).
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
Sequence Positions
663aa
Sequence
Met1-His683
Applicable Applications for SEMA4A cell lysate
Western Blot (WB)
Application Notes
WB: Use at an assay dependent dilution.
Species
Human
Recommend Usage
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.2. Re-dissolve the pellet using 200uL pure water and boil for 2-5 min.
Sequence Construction
A DNA sequence encoding the human SEMA4A (NP_071762.2) extracellular domain (Met 1-His 683) was expressed, with a polyhistidine tag at the C-terminus.
Preparation Method
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors. Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Preparation and Storage
Store at 4 degree C for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80 degree C for up to twelve months. Avoid repeated freeze-thaw cycles.
Samples are stable for up to twelve months from date of receipt.
Related Product Information for SEMA4A cell lysate
Semaphorin-4A, also known as Semaphorin-B, SEMA4A, Sema B and SEMAB, is a single-pass type I membrane protein that belongs to the semaphorin family. It inhibits axonal extension by providing local signals to specify territories inaccessible for growing axons. Semaphorin-4A/SEMA4A contains one Ig-like C2-type (immunoglobulin-like) domain, one PSI domain and one Sema domain. Defects in SEMA4A are the cause of retinitis pigmentosa type 35 (RP35) which leads to degeneration of retinal photoreceptor cells. Patients typically have night vision blindness and loss of mid-peripheral visual field. As their condition progresses, they lose their far peripheral visual field and eventually central vision as well. Defects in SEMA4A are also the cause of cone-rod dystrophy type 1 (CORD1) which are inherited retinal dystrophies belonging to the group of pigmentary retinopathies. CORDs are characterized by retinal pigment deposits visible on fundus examination, predominantly in the macular region, and initial loss of cone photoreceptors followed by rod degeneration. Semaphorins are secreted, transmembrane, and GPI-linked proteins, defined by cysteine-rich semaphorin protein domains, that have important roles in a variety of tissues. Humans have 2 semaphorins, Drosophila has five, and two are known from DNA viruses. Semaphorins are found in nematodes and crustaceans but not in non-animals. They are grouped into eight classes on the basis of phylogenetic tree analyses and the presence of additional protein motifs. Semaphorins have been implicated in diverse developmental processes such as axon guidance during nervous system development and regulation of cell migration.

This Human SEMA4A overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of SEMA4A protein from the overexpression lysate was verified.
References
Clark H.F., et al., 2003, Genome Res. 13: 2265-2270. Ota T., et al., 2004, Nat. Genet. 36: 40-45. Neufeld, G. et al., 2005, Front Biosci. 10 : 751-60. Fiore, R. et al., 2005, Mol Cell Biol. 25 (6):2310-9. Abid A., et al., 2006, J. Med. Genet. 43:378-381.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Accession #
Molecular Weight
69,104 Da
NCBI Official Full Name
semaphorin-4A isoform 1
NCBI Official Synonym Full Names
semaphorin 4A
NCBI Official Symbol
SEMA4A
NCBI Official Synonym Symbols
RP35; SEMB; SEMAB; CORD10
NCBI Protein Information
semaphorin-4A
UniProt Protein Name
Semaphorin-4A
Protein Family
UniProt Gene Name
SEMA4A
UniProt Synonym Gene Names
SEMAB; SEMB; Sema B
UniProt Entry Name
SEM4A_HUMAN

NCBI Description

This gene encodes a member of the semaphorin family of soluble and transmembrane proteins. Semaphorins are involved in numerous functions, including axon guidance, morphogenesis, carcinogenesis, and immunomodulation. The encoded protein is a single-pass type I membrane protein containing an immunoglobulin-like C2-type domain, a PSI domain and a sema domain. It inhibits axonal extension by providing local signals to specify territories inaccessible for growing axons. It is an activator of T-cell-mediated immunity and suppresses vascular endothelial growth factor (VEGF)-mediated endothelial cell migration and proliferation in vitro and angiogenesis in vivo. Mutations in this gene are associated with retinal degenerative diseases including retinitis pigmentosa type 35 (RP35) and cone-rod dystrophy type 10 (CORD10). Multiple alternatively spliced transcript variants encoding different isoforms have been identified.[provided by RefSeq, Sep 2010]

Uniprot Description

SEMA4A: a single-pass type I membrane protein that inhibits axonal extension by providing local signals to specify territories inaccessible for growing axons. Defects in SEMA4A are the cause of retinitis pigmentosa type 35 and cone-rod dystrophy type 10.

Protein type: Membrane protein, integral

Chromosomal Location of Human Ortholog: 1q22

Cellular Component: integral to membrane; plasma membrane

Molecular Function: protein binding; receptor activity

Biological Process: regulation of cell shape; axon guidance; negative regulation of angiogenesis; T-helper 1 cell differentiation; angiogenesis

Disease: Retinitis Pigmentosa 35; Cone-rod Dystrophy 10

Research Articles on SEMA4A

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Product Notes

The SEMA4A sema4a (Catalog #AAA8114766) is a Cell Lysate produced from HEK293 Cells and is intended for research purposes only. The product is available for immediate purchase. The immunogen sequence is 663aa. AAA Biotech's SEMA4A can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB). WB: Use at an assay dependent dilution. Researchers should empirically determine the suitability of the SEMA4A sema4a for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. The amino acid sequence is listed below: Met1-His68 3. It is sometimes possible for the material contained within the vial of "SEMA4A, Cell Lysate" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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