Home / Complement Factor H-related 4/CFHR4 / Human Complement Factor H-related 4/
CFHR4 Antibody

Human Complement Factor H-related 4/
CFHR4 Antibody

Catalog #: AF5980 Datasheet / COA / SDS
Catalog # Availability Size / Price Qty
AF5980
AF5980-SP
Detection of Human Complement Factor H-related 4/CFHR4 by Western Blot.
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Human Complement Factor H-related 4/
CFHR4 Antibody Summary

Species Reactivity
Human
Specificity
Detects human Complement Factor H-related 4/CFHR4 in direct ELISAs and Western blots. In direct ELISAs, approximately 5% cross‑reactivity with recombinant human (rh) CFHR1, rhCFHR2, and rhCFHR5 is observed.
Source
Polyclonal Sheep IgG
Purification
Antigen Affinity-purified
Immunogen
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human Complement Factor H-related 4/CFHR4
Arg41-Glu331 (Ser79Leu)
Accession # Q92496
Formulation
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.
Label
Unconjugated

Applications

Recommended Concentration
Sample
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 Complement Factor H-related 4/CFHR4 antibody by Western Blot. View Larger

Detection of Human Complement Factor H-related 4/CFHR4 by Western Blot. Western blot shows lysates of human plasma. PVDF Membrane was probed with 1 µg/mL of Sheep Anti-Human Complement Factor H-related 4/CFHR4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5980) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for Complement Factor H-related 4/CFHR4 at approximately 86 kDa (as indicated). This experiment was conducted under non-reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
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Shipping
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: Complement Factor H-related 4/CFHR4

FHR4 (Complement factor H-related protein 4; also FHR4B and CFHR4) is a 45 kDa glycoprotein member of the factor H-related protein family. It is synthesized by hepatocytes and circulates in plasma. FHR4(B) binds to C3b and C3d. It also binds to native (pentameric) C-reactive protein (pCRP), and is suggested to promote pCRP binding to necrotic cells surfaces, thus promoting cell clearance. Mature human CFHR is 312 amino acids (aa) in length. It contains five Sushi/SCR domains, the first of which (aa 23-85) is associated with pCRP binding. There is a circulating, 86 kDa alternative splice form termed FHR4A that shows an insertion of 247 aa after Asp92. This is considered the dominant isoform, and appears to show the same activity as CFHR. Over aa 41-331, human CFHR shares 61% aa identity with a related molecule found in rat.

Entrez Gene IDs
10877 (Human)
Alternate Names
complement factor H-related protein 4; CFHL4; CFHR4; Complement Factor Hrelated 4; Complement Factor H-related 4; FHR4; FHR-4

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CFHR4 Antibody

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