Recombinant Human Annexin A4 Protein, CF

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Recombinant Human Annexin A4 Protein, CF Summary

Product Specifications

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Bioassay data are not available.
E. coli-derived human Annexin A4 protein
Ala2-Asp321, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Predicted Molecular Mass
37 kDa
35 kDa, reducing conditions

Product Datasheets

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Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.


Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 500 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it 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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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Background: Annexin A4

Annexin A4 (ANXA4), also known as Lipocortin IV, placental anticoagulant protein II, and zymogen granule membrane-associated protein of 36 kDa (ZAP36), is a member of the Annexin protein family. Annexins are calcium-dependent phospholipid-binding proteins that are preferentially located on the cytosolic face of the plasma membrane. The Annexins consist of a unique N-terminal domain followed by a homologous C-terminal core domain containing the phospholipid-binding sites. The C-terminal domain is comprised of four 60-70 aa annexin repeats which form a tightly packed disc known as the annexin domain. Members of the Annexin family play a role in cytoskeletal interactions, phospholipase inhibition, regulation of cellular growth, and intracellular signal transduction pathways. (1) Annexin A4 regulates the transcription from RNA polymerase II promoter (2). The level of Annexin A4 increases in cytoplasm during apoptosis (3). Human Annexin A4 shares 92% aa sequence identity with mouse and rat Annexin A4.

  1. Gerke, V. et al. (2005) Nat. Rev. Mol. Cell Biol. 6:449.
  2. Jeon, Y. J. et al. (2010). Cellular and molecular life sciences, 67:2271.
  3. Gerner, C. et al. (2000). J. Biol. Chem. 275:39018
Entrez Gene IDs
307 (Human); 11746 (Mouse); 79124 (Rat)
Alternate Names
AIV; Annexin A4; annexin IV (placental anticoagulant protein II); Annexin IV; annexin-4; ANX4; ANX4Carbohydrate-binding protein p33/p41; ANXA4; Chromobindin-4; chromobindin-4,35-beta calcimedin; DKFZp686H02120; Endonexin I; Lipocortin IV; MGC75105; P32.5; PAP-II; PIG28; Placental anticoagulant protein II; PP4-X; proliferation-inducing gene 28; proliferation-inducing protein 28; Protein II; ZAP36


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