Human Syntaxin-BP2 Antibody

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Detection of Human Syntaxin-BP2 by Western Blot.
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Human Syntaxin-BP2 Antibody Summary

Species Reactivity
Detects human Syntaxin‑BP2 in direct ELISAs and Western blots. In direct ELISAs, approximately 5% cross‑reactivity with recombinant human (rh) Syntaxin-BP1 and rhSyntaxin-BP3 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant human Syntaxin‑BP2
Accession # NP_001120868
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.


Recommended Concentration
Western Blot
1 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot Detection of Human Syntaxin-BP2 antibody by Western Blot. View Larger

Detection of Human Syntaxin-BP2 by Western Blot. Western blot shows lysates of human peripheral blood leukocyte. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human Syntaxin-BP2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5900) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Syntaxin-BP2 at approximately 68 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.

Background: Syntaxin-BP2

Syntaxin‑BP2 (STXBP2; Syntaxin-binding protein 2; also Unc18-2 and Unc18B) is a 64‑66 kDa member of the SNARE-interacting Sec1/Unc18/STXBP family of proteins. It is widely expressed, particularly in hematopoietic cells, and is found both in cytoplasm, and associated with membranes, where it binds to STX1A, 2, and 3. Thus, it presumably participates in primary granule exocytosis by promoting granule fusion. Human STXBP2 is 593 amino acids (aa) in length. It contains one SEC1 domain (aa 28‑576) with Trp28, Ser42, and Glu59 all playing a key role in syntaxin binding. There is one splice variant that shows a deletion of aa 83‑85. Over aa 80‑223, human and mouse STXBP2 share 95% aa sequence identity.

Long Name
Syntaxin-binding Protein 2
Entrez Gene IDs
6813 (Human); 20911 (Mouse); 81804 (Rat)
Alternate Names
FHL5; Hunc18b; MUNC18-2; Protein unc-18 homolog 2; Protein unc-18 homolog B; STXBP2; syntaxin binding protein 2; syntaxin-binding protein 2; SyntaxinBP2; Syntaxin-BP2; Unc18-2; UNC18B; unc-18B; UNC18Bpp10122

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