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MAB8140

Sigma-Aldrich

Anti-Cytomegalovirus Antibody, early, clone 5A8.2

clone 5A8.2, Chemicon®, from mouse

Synonym(s):

CMV

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

ascites fluid

clone

5A8.2, monoclonal

species reactivity

human

manufacturer/tradename

Chemicon®

technique(s)

immunofluorescence: suitable
immunohistochemistry: suitable
immunoprecipitation (IP): suitable
western blot: suitable

isotype

IgG1

shipped in

wet ice

Specificity

Reacts with Immediate Early 2 protein (IE2) and its fragments. Recognizes a can epitope near the carboxy-end that includes an epitope found in IE2 86, IE2 60 and IE2 40. In western blot recognizes proteins at apparent molecular weights of 86, 68-72, 55 and 38 kD. Can detect CMV infection 1 hour post-infection exhibiting nuclear and/or intranuclear inclusion staining with reaches peak intensity at 3 hours.


With CMV the antigens expressed at different times are listed as:

Immediate Early (alpha gene expression): those antigens expressed at 3-12 hrs post-infection generally involved in Transcription such as 72kD major phosphoprotein and a few other other antigens at 60 - 80kD.

Early Antigen (beta genes) a.k.a. Delayed Early or Intermediate Early: expressed at 12-24hrs post-infection. Generally enzymes and one virion structural gene preceding viral DNA synthesis.

Late Antigen (gamma genes): expressed at 36-48hrs post-infection. Generally structural proteins. Major protein = 55kD

Immunogen

Affinity purified antigen from MRC-5 cells infected with CMV AD169 (ATCC).
Epitope: early

Application

Anti-Cytomegalovirus Antibody, early, clone 5A8.2 detects level of Cytomegalovirus & has been published & validated for use in IF, WB, IH & IP.
Immunochemistry.

IFA at 1:3,000-1:6,000 on acetone fixed cells.

Does not work with paraffin embedded tissue sections.

Dilute with buffer pH 7.4-7.6 to desired working volume.

For extensive dilution, protein containing or other stabilizing medium should be used.

Final working dilutions must be determined by end user.

Physical form

Format: Purified
Purified ascites. Supplied in PBS buffer, pH 7.4. Contains 0.01% sodium azide and carrier protein. Has been sterile filtered.

Legal Information

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

10 - Combustible liquids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Christopher B Ball et al.
mBio, 13(3), e0033722-e0033722 (2022-05-18)
Human cytomegalovirus (HCMV) immediate-early 2 (IE2) protein is a multifunctional transcription factor that is essential for lytic HCMV infection. IE2 functions as an activator of viral early genes, negatively regulates its own promoter, and is required for viral replication. The
The IE2 60-kilodalton and 40-kilodalton proteins are dispensable for human cytomegalovirus replication but are required for efficient delayed early and late gene expression and production of infectious virus.
White, Elizabeth A, et al.
Journal of virology, 81, 2573-2583 (2007)
Anthony R Fehr et al.
Journal of virology, 85(2), 663-674 (2010-11-05)
We have previously reported that a newly annotated gene of human cytomegalovirus (HCMV), UL21a, encodes an early viral protein termed pUL21a. Most notably, the virions of a UL21a deletion virus had markedly reduced infectivity, indicating that UL21a is required to
Anthony R Fehr et al.
PLoS pathogens, 8(7), e1002789-e1002789 (2012-07-14)
The anaphase-promoting complex (APC) is an E3 ubiquitin ligase which controls ubiquitination and degradation of multiple cell cycle regulatory proteins. During infection, human cytomegalovirus (HCMV), a widespread pathogen, not only phosphorylates the APC coactivator Cdh1 via the multifunctional viral kinase
Salomé Manska et al.
Virology, 566, 26-41 (2021-12-04)
Upon entry of Human cytomegalovirus (HCMV) into the host cell, the viral genome is transported to the nucleus where it serves as a template for transcription and genome replication. Production of new viral genomes is a coordinated effort between viral

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