Human HAPLN1 Antibody

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Product Details
Citations (8)
Supplemental Products
Reviews (1)

Human HAPLN1 Antibody Summary

Species Reactivity
Detects human HAPLN1 in direct ELISAs and Western blots. In these formats, this antibody shows approximately 5% cross‑reactivity with recombinant human HAPLN4.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human HAPLN1 (R&D Systems, Catalog # 2608-HP)
Accession # P10915
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.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human HAPLN1 (Catalog # 2608-HP)

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.

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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: HAPLN1

HAPLN1 (also known as link protein and CRTL1) is a member of the hyaladherin family of hyaluronic acid (HA) binding proteins. Hyaluronan binding proteins are of two types; those with link modules, and those without. Link modules are 100 amino acid (aa) HA and protein-binding sequences that contain two alpha -helices and two antiparallel beta -sheets (1, 3). There are three categories of link module-containing proteins. “A” domain-type proteins contain one link module; “B” domain-type proteins contain one link module with an N- and C-terminal flanking region; and “C” domain-type proteins have an extended structure with one N-terminal V-type Ig-like domain followed by two link modules (2). The HAPLN family is a group of four C domain-type proteins that share approximately 50% aa identity (4). HAPLN1 is synthesized as a 354 aa precursor that contains a 15 aa signal sequence and a 339 aa mature region (4 - 6). It contains one Ig-like domain and two 95 aa link modules (6). It is variably glycosylated with a native molecular weight between 41 - 48 kDa (7, 8). Mature human HAPLN1 is 97%, 96%, 96%, 96%, and 96% aa identical to equine, porcine, rat, mouse and bovine HAPLN1, respectively. HAPLN1 contributes to extracellular matrix stability and flexibility (9). In cartilage, HALPN1 forms a ternary complex with HA and aggrecan. This creates a gel-like substance with remarkable resistance to deformation (3). In this complex, HA forms a linear backbone with perpendicularly attached aggrecan and HAPLN1. Aggrecan and HAPLN1 lie parallel to each other, while HA runs between the two HAPLN1 link modules (2, 3, 10). The Ig domain of HAPLN1 binds to aggrecan, while the two link modules of HAPLN1 bind to HA. Although HA and aggrecan will associate, the tendency is towards dissociation (2, 3, 8). HAPLN1 provides a stabilizing influence on HA-aggrecan associations, thus creating a long-lived ternary functional complex.

  1. Day, A.J. and G.D. Prestwich (2002) J. Biol. Chem. 277:4585.
  2. Seyfried, N.T. et al. (2005) J. Biol. Chem. 280:5435.
  3. Matsumoto, K. et al. (2003) J. Biol. Chem. 278:41205.
  4. Spicer, A.P. et al. (2003) J. Biol. Chem. 278:21083.
  5. Dudhia, J. and T.E. Hardingham (1990) Nucleic Acids Res. 18:1292.
  6. Osborne-Lawrence, S.L. et al. (1990) Genomics 8:562.
  7. Roughley, P.J. et al. (1982) J. Biol. Chem. 257:11908.
  8. Shi, S. et al. (2004) J. Biol. Chem. 279:12060.
  9. Binette, F. et al. (1994) J. Biol. Chem. 269:19116.
  10. Perkins, S.J. et al. (1992) Biochem. J. 285:263.
Long Name
Hyaluronan and Proteoglycan Link Protein 1
Entrez Gene IDs
1404 (Human)
Alternate Names
Cartilage link protein; Cartilage-link protein; Cartilage-linking protein 1; CRTL1; CRTL1cartilage linking protein 1; HAPLN1; hyaluronan and proteoglycan link protein 1; Proteoglycan link protein

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Citations for Human HAPLN1 Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

8 Citations: Showing 1 - 8
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  1. Surfactant protein C is associated with perineuronal nets and shows age-dependent changes of brain content and hippocampal deposits in wildtype and 3xTg mice
    Authors: S Schob, J Puchta, K Winter, D Michalski, B Mages, H Martens, A Emmer, KT Hoffmann, F Gaunitz, A Meinicke, M Krause, W Härtig
    Journal of chemical neuroanatomy, 2021;0(0):102036.
    Species: Mouse
    Sample Types: Whole Tissue
    Applications: IHC
  2. The protein tyrosine phosphatase RPTP?/phosphacan is critical for perineuronal net structure
    Authors: GJ Eill, A Sinha, M Morawski, MS Viapiano, RT Matthews
    J. Biol. Chem., 2020;295(4):955-968.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: ICC
  3. Synaptic coupling of inner ear sensory cells is controlled by brevican-based extracellular matrix baskets resembling perineuronal nets
    Authors: M Sonntag, M Blosa, S Schmidt, K Reimann, K Blum, T Eckrich, G Seeger, D Hecker, B Schick, T Arendt, J Engel, M Morawski
    BMC Biol., 2018;16(1):99.
    Species: Mouse
    Sample Types: Cell Lysates
    Applications: Western Blot
  4. Extracellular matrix molecules exhibit unique expression pattern in the climbing fiber-generating precerebellar nucleus, the inferior olive.
    Authors: Kecskes S, Gaal B, Racz E, Birinyi A, Hunyadi A, Matesz C
    Neuroscience, 2015;284(0):412-21.
    Species: Rat
    Sample Types: Whole Tissue
    Applications: IHC
  5. Saccadic Palsy following Cardiac Surgery: Possible Role of Perineuronal Nets.
    Authors: Eggers S, Horn A, Roeber S, Hartig W, Nair G, Reich D, Leigh R
    PLoS ONE, 2015;10(7):e0132075.
    Species: Human
    Sample Types: Whole Tissue
    Applications: IHC
  6. Semaphorin 3A binds to the perineuronal nets via chondroitin sulfate type E motifs in rodent brains.
    Authors: Dick, Gunnar, Tan, Chin Lik, Alves, Joao Nun, Ehlert, Erich M, Miller, Gregory, Hsieh-Wilson, Linda C, Sugahara, Kazuyuki, Oosterhof, Arie, van Kuppevelt, Toin H, Verhaagen, Joost, Fawcett, James W, Kwok, Jessica
    J Biol Chem, 2013;288(38):27384-95.
    Species: Mouse
    Sample Types: Tissue Homogenates
    Applications: Western Blot
  7. Perisynaptic aggrecan-based extracellular matrix coats in the human lateral geniculate body devoid of perineuronal nets.
    Authors: Lendvai D, Morawski M, Bruckner G, Negyessy L, Baksa G, Glasz T, Patonay L, Matthews RT, Arendt T, Alpar A
    J. Neurosci. Res., 2011;90(2):376-87.
    Species: Human
    Sample Types: Whole Tissue
    Applications: IHC-Fr
  8. The altered expression of perineuronal net elements during neural differentiation.
    Authors: Eskici N, Erdem-Ozdamar S, Dayangac-Erden D
    Cell Mol Biol Lett, 0;23(0):5.
    Species: Rat
    Sample Types: Cell Lysates
    Applications: Western Blot


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Human HAPLN1 Antibody
By Kimberly Alonge on 04/10/2018
Application: ICC/IF Sample Tested: Adult brain Species: Mouse and Rat

Very strong and specific staining.