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SPNXB Blocking Peptide (Center)

Synthetic peptide

Product Information
Primary Accession Q9NS25
Other Accession Q9NY87, Q9NS26, NP_663697.1
Additional Information
Gene ID 728695
Other Names Sperm protein associated with the nucleus on the X chromosome B/F, Cancer/testis antigen 112, CT112, Nuclear-associated protein SPAN-Xb, SPANX-B, Nuclear-associated protein SPAN-Xf, SPANX-F, SPANX family member B/F, SPANXB1, SPANXB
Target/Specificity The synthetic peptide sequence is selected from aa 32-47 of HUMAN SPANXB1
Format Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.
PrecautionsThis product is for research use only. Not for use in diagnostic or therapeutic procedures.
Protein Information
Synonyms SPANXB
Cellular Location Cytoplasm. Nucleus. Note=Associated with nuclear craters
Tissue Location Detected in testis and sperm.
Research Areas
Citations (0)

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Temporally regulated transcription and translation of several testis-specific genes is required to initiate the series of molecular and morphological changes in the male germ cell lineage necessary for the formation of mature spermatozoa. This gene is a member of the SPANX family of cancer/testis-associated genes, which are located in a cluster on chromosome X. The SPANX genes encode differentially expressed testis-specific proteins that localize to various subcellular compartments. This particular gene maps to chromosome X in a head-to-tail orientation with SPANX family member B1 and appears to be a duplication of that locus. The SPANXB genes are unique members of this gene family, since they contain an additional 18 nt in their coding region compared to the majority of family members. Although the protein encoded by this gene contains consensus nuclear localization signals, the major site for subcellular localization of expressed protein is in the cytoplasmic droplets of ejaculated spermatozoa. This protein provides a biochemical marker for studying the unique structures in spermatazoa, while attempting to further define its role in spermatogenesis.


Hansen, S., et al. Syst Biol Reprod Med 55, 18-26 (2010) :
Hansen, M.A., et al. Mol. Reprod. Dev. 75(2):219-229(2008)
Kouprina, N., et al. Genome Res. 15(11):1477-1486(2005)
Ross, M.T., et al. Nature 434(7031):325-337(2005)
Zendman, A.J., et al. Gene 309(2):125-133(2003)

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$ 80.00
$ 99.00
Cat# BP20242c
(40 western blots)
Availability: 2 weeks
Bulk Size
Seasonal Special on Bulk Order
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