A8706
Avidin from egg white
recombinant, expressed in corn, ≥12 units/mg protein (E1%/280)
Synonym(s):
AVID_CHICK
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About This Item
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recombinant
expressed in corn
Assay
≥80% protein basis (biuret)
form
powder
specific activity
≥12 units/mg protein (E1%/280)
mol wt
glycoprotein 66 kDa
subunit 16 kDa
technique(s)
ELISA: suitable
immunoblotting: suitable
immunoelectrophoresis: suitable
UniProt accession no.
storage temp.
2-8°C
Gene Information
chicken ... AVD(396260)
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General description
Avidin is a homotetrameric glycoprotein found in the egg white of birds, reptiles and amphibians. Each subunit is 16 kDa, singly glycosylated and binds to a molecule of biotin with greater affinity and specificity. Recombinant avidin from corn is similar to avidin from egg white in terms of properties like isoelectric point (pI) and antigenic properties except for the molecular weight. Avidin from corn has low molecular weight than chicken egg-derived avidin. This might be due to less complex glycosylation composition in plants. Commercial production of avidin from corn has certain advantages in terms of availability of greater biomass and avoiding the co-purification of animal virus.
Application
Avidin egg white was used in an assay using functionalized xenon as a biosensor to detect biotin-avidin binding. Egg white was used at 80 nmol.
Avidin forms an extremely strong complex with d-biotin (Kd ~ 10-15). This activity has made both avidin and biotin extremely useful labels in immunochemical methods of detection and quantitation.
Unit Definition
One unit will bind 1.0 μg of d-biotin.
Preparation Note
Affinity purified
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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M J Navakouskiĭ et al.
Bioorganicheskaia khimiia, 38(4), 449-457 (2012-11-30)
A new construction of a test-system for free thyroid hormone 3,3',5-triiodothyronine determination (free T3) in human blood serum in ELISA and IRMA variants was described. For this purpose a low-molecular weight bifunctional conjugate containing T3 and vitamin H (biotin, Bt)
Sofia H L Frost et al.
Cancer biotherapy & radiopharmaceuticals, 28(2), 108-114 (2012-12-13)
Abstract Purpose: Pretargeted radioimmunotherapy (PRIT) against intraperitoneal (i.p.) ovarian microtumors using avidin-conjugated monoclonal antibody MX35 (avidin-MX35) and (211)At-labeled, biotinylated, succinylated poly-l-lysine ((211)At-B-PLsuc) was compared with conventional radioimmunotherapy (RIT) using (211)At-labeled MX35 in a nude mouse model. Mice were inoculated i.p.
Stefan Schillberg et al.
Journal of plant physiology, 258-259, 153359-153359 (2021-01-19)
Recombinant proteins play an important role in many areas of our lives. For example, recombinant enzymes are used in the food and chemical industries and as high-quality proteins for research, diagnostic and therapeutic applications. The production of recombinant proteins is
Minkoo Ahn et al.
PloS one, 7(11), e50192-e50192 (2012-11-21)
Fibril formation by mutational variants of human lysozyme is associated with a fatal form of hereditary non-neuropathic systemic amyloidosis. Defining the mechanistic details of lysozyme aggregation is of crucial importance for understanding the origin and progression of this disease and
Biopharmaceuticals in Plants: Toward the Next Century of Medicine, 121-122 (2009)
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