SKU: 72871498073

Human IgG Donor Beads

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Description

Human IgG Donor BeadsProduct Specification Stability & Storage Store in a dark place at 2 8C; product shelf life is 12 months. Background Homogeneous Immuno Chemiluminescence Assay (HICA) is a homogeneous immunoassay method based on energy transfer between donor beads and acceptor beads at close proximity, resulting in luminescence. Donor beads recognize protein 1 (Tag1 label), and acceptor beads recognize protein 2 (Tag2 label). When protein 1 binds to protein 2, the

Product Specification


Stability & Storage

Store in a dark place at 2-8°C; product shelf life is 12 months.

Background


Homogeneous Immuno Chemiluminescence Assay (HICA) is a homogeneous immunoassay method based on energy transfer between donor beads and acceptor beads at close proximity, resulting in luminescence.

Donor beads recognize protein 1 (Tag1 label), and acceptor beads recognize protein 2 (Tag2 label). When protein 1 binds to protein 2, the distance between the beads is less than 200 nm. Upon excitation at 680 nm, donor beads generate singlet oxygen, which diffuses to acceptor beads. The acceptor beads then undergo a redox reaction, emitting light at 615 nm. The signal intensity is proportional to the strength of protein interaction.

This product features a simple operation process, no washing steps, fast speed, high sensitivity, and the ability to detect weak interactions.

 

Protocol

[Required Reagents]

Name

Catalog Number

Human IgG Donor Beads

UA086112

Streptavidin Acceptor Beads

UA086090

Universal Buffer 1

UA086113


[Detection Procedure for Reference]

Detection Procedure

Detection Procedure 1 (37℃Rapid Detection)

Detection Procedure 2 (Room Temperature Detection)

Step 1:

4μL hFC tag-M1 +4μL Biotin-M2+ 6μL Human IgG Donor Beads,Avoid Light / Green Light

4μL hFC tag-M1 +4μL Biotin-M2+ 6μL Human IgG Donor Beads,Avoid Light / Green Light

Incubation

37℃ Shaking Incubation 20 minutes,Avoid Light / Green Light

Room Temperature Incubation 60 minutes,,Avoid Light / Green Light

Step 2:

Add 6μL Streptavidin Acceptor Beads,Avoid Light / Green Light

Add 6μL Streptavidin Acceptor Beads,Avoid Light / Green Light

Incubation

37℃ Shaking Incubation 10 minutes,Avoid Light / Green Light

Room Temperature Incubation 30 minutes,Avoid Light / Green Light

Reading

Instrument Reading

Instrument Reading


[Performance Validation]

Sample Preparation:

Use Universal Buffer 1 to pre-dilute biotinylated rabbit IgG (Bio-rIgG) to 15μg/mL (100nM) as a stock solution, then perform gradient dilution according to the following scheme:

ID

Final Concentration (nM)

Universal Buffer 1

Volume (μL)

High Concentration Addition

Volume (μL)

C12

1.0E+01

210

90μL Stock Solution

C11

3.0E+00

210

90μL C12

C10

1.0E+00

180

90μL C11

C9

3.0E-01

210

90μL C10

C8

1.0E-01

180

90μL C9

C7

3.0E-02

210

90μL C8

C6

1.0E-02

180

90μL C7

C5

3.0E-03

210

90μL C6

C4

1.0E-03

180

90μL C5

C3

3.0E-04

210

90μL C4

C2

1.0E-04

180

90μL C3

C1

0

180

/


Detection Reagent Preparation:

Name

Preparation Concentration

Diluent

Human IgG Donor Beads

25 μg/mL

Universal Buffer 1

Streptavidin Acceptor Beads

25 μg/mL

Universal Buffer 1


37℃ Incubation Mode Results:

Maximum Signal: 390419

Minimum Signal: 409

EC50= 0.076 nM

Room Temperature Incubation Mode Results:

Maximum Signal: 194000

Minimum Signal: 181

EC50= 0.043 nM

Guidelines

1. This experiment is light-sensitive; ensure all operations are performed in the dark. It is recommended to carry out preparation, sample loading, and incubation steps under green light (illuminance below 100 LUX). 2. This product is compatible with multifunctional microplate readers equipped with Alpha detection modules. 3. Vortex thoroughly before use or briefly centrifuge (2000×g, 5–10 seconds) to ensure complete sample retrieval. 4. It is recommended to use the company’s accompanying diluent for reagent preparation and sample dilution. If additional components are required, they can be directly added to this diluent. 5. To ensure comparability of experimental data across different batches, strictly control incubation temperature and time. 6. Avoid generating bubbles during sample loading.
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SKU: 72871498073

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Sarah Sofía Ortiz Campos
Whiting, US
★★★★★ 1
No recomiendo
Format: Paperback
Muy malo, no vine completo, además se demoró mucho más de lo que decía al momento de comprarlo. Solo aplazaban la fecha de entrega sin consultar cómo afectaba al cliente. Yo tuve que presentar el examen sin el libro, porque no llegó en la fecha que decía al comprarlo y después se cambió 3 veces la fecha, casi cumpliendo el mes.
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Reviewed in the United States on December 30, 2025
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Elaine li
Omaha, US
★★★★★ 5
VERY EFFICIENT MATERIAL
Format: Paperback
It's the most efficient material to prepare the test.
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Reviewed in the United States on April 1, 2020
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ThereseHazzard
Charlottesville, US
★★★★★ 5
All around helpful---worth the money!
Format: Paperback
This guide has been most helpful for all the folks I help prepare for the iTEP test! It gives insight into what each section of the test is looking for along with examples and great tips about actually TAKING the test. In the Writing and Speaking sections, it also gives sample scores and comments from the Master Grader which is very helpful too.
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Reviewed in the United States on August 9, 2019
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Thomas J. Shandorf
Belleville, US
★★★★★ 5
Comprehensive, clear and coherent!
Format: Paperback
The iTEP Practice Guide combines a no-nonsense approach to the specific iTEP tests and at the same time offers exercises that task the student with what they need to know. Exercises not only serve the purpose of scoring well, but the overall approach is communicative competence. We use the text in our group and one-to-one classes with very positive--and lasting--results.
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Reviewed in the United States on July 23, 2019
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Sarah Sofía Ortiz Campos
Belleville, US
★★★★★ 1
No recomiendo
Format: Paperback
Muy malo, no vine completo, además se demoró mucho más de lo que decía al momento de comprarlo. Solo aplazaban la fecha de entrega sin consultar cómo afectaba al cliente. Yo tuve que presentar el examen sin el libro, porque no llegó en la fecha que decía al comprarlo y después se cambió 3 veces la fecha, casi cumpliendo el mes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025

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