Recombinant Human FABP3/H-FABP Protein, CF

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Recombinant Human FABP3/H-FABP 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 FABP3/H-FABP protein
Accession # P05413
Accession #
N-terminal Sequence
Predicted Molecular Mass
16 kDa
15 kDa, reducing conditions

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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, EDTA and DTT.
Reconstitution Reconstitute at 1 mg/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: FABP3/H-FABP

Fatty acid binding protein-3 (FABP3; also named Fatty acid binding protein 11, FABP11, H- or M- (heart or muscle) FABP, Mammary derived growth inhibitor, or MDGI) is a member of a large superfamily of lipid binding proteins that are expressed in a tissue specific manner (1, 9, 10). FABP3 is one of ten cytoplasmic FABPs that are 14-15 kDa in size and range from 126-140 amino acids (aa) in length (1, 2, 3). Although all are highly conserved in their tertiary structure, there is only modest aa identity between any two members. The FABP family members are subdivided based on organ or tissue type it was originally expressed or identified; liver- (L-FABP), intestine- (I-FABP), heart- (H-FABP), adipocyte- (A-FABP), epidermal- (E-FABP), ileal- (IL-FABP), brain- (B-FABP), myelin- (M-FABP) and testis-FABP (T-FABP) (1). Human H-FABP, the product of the FABP3 gene, is a 132 aa cytosolic protein that shows a flattened beta -barrel structure generated by a series of antiparallel beta ‑strands and two alpha ‑helices (4, 5, 7). One molecule of FABP3 is capable of binding one long-chain fatty acid (6, 8, 11). It is suggested that ligands first bind to the outside of the molecule, and this binding subsequently induces a conformational change in the binding protein, resulting in "internalization" of the ligand (7, 11). Human FABP3 is 86%, 89% and 89% aa identical to mouse, rat and canine FABP3, respectively. It also shows 29% and 32% aa identity to human L-FABP and I‑FABP, respectively.

  1. Smathers, R & Petersen, D. (2011) Human Genomics 5:170.
  2. Storch, J. & Thumser, AE. (2000) Biochim Biophys Acta. 1486:28.
  3. Mihajlovic, M. & Lazaridis, T. (2007) Protein Sci. 9:2042.
  4. Sweetser, D.A. et al. (1987) J. Biol. Chem. 262:16060.
  5. Offner, G. et al. Biochem. J. (1988) 252:191.
  6. Glatz JF. et al. (1985) Chem Phys Lipids. 38:115.
  7. Bernlohr, DA. et al. (1997) Ann. Rev. of Nut. 17:277.
  8. Zanotti G. et al. (1992) J. Biol. Chem. 267:18541.
  9. Zimmerman, A.W. & J.H. Veerkamp (2002) Cell. Mol. Life Sci. 59:1096.
  10. Haunerland, N.H. and F. Spener (2004) Prog. Lipid Res. 43:328.
  11. Majava,V. et al. (2010) PLoS One. 5:e10300.
Long Name
Fatty Acid-Binding Protein 3
Entrez Gene IDs
2170 (Human)
Alternate Names
FABP11; FABP3; fatty acid binding protein 11; fatty acid binding protein 3, muscle and heart (mammary-derived growthinhibitor); Fatty acid-binding protein 3; Fatty acid-binding protein 3, muscle; fatty acid-binding protein, heart; Heart-type fatty acid-binding protein; HFABP; H-FABP; H-FABPM-FABP; Mammary-derived growth inhibitor; MDGI; Muscle fatty acid-binding protein; O-FABP


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