Name: XFD555 Anti-cow/ human CD46 Antibody *MEM-258*
Brand: AAT Bioquest
SKU: 10460160
Availability: InStock

XFD555 Anti-cow/ human CD46 Antibody

MEM-258

MEM-258 is an anti-cow/ human monoclonal antibody that targets the CD46 antigen. CD46 (alternatively called Membrane Cofactor Protein) is a 45 - 75 kD transmembrane protein that is expressed on the surface of cells like platelets, macrophages, granulocytes and B cells. CD46 is associated with a variety of biologically interesting macromolecules/ligands, namely, CD29, SCR2/3/4 and CD9. CD46 is a fairly uncommon antibody target, with a little more than 3600 publications in the last decade. Even still, CD46 is vital to cell biology, complement and immunology research, frequently serving as a phenotypic marker for differentiating cell types in flow cytometric applications. This antibody was purified through affinity chromatography and conjugated to XFD555 (ex/em = 553/568 nm). XFD555 is manufactured by AAT Bioquest, and it has a chemical structure similar to that of Alexa Fluor® 555 (Alexa Fluor® is the trademark of Thermo Fisher). It is compatible with the 561 nm laser and 572/28 nm bandpass filter (for example, as in the Agilent Technologies NovoCyte Advanteon).

Datasheet

COA

Catalog	Size	Price	Quantity
10460160	100 tests	Price
10460161	500 tests	Price

Conjugation

We provide custom conjugation services for this antibody (e.g. labeling of CD46 antibody with HRP). A list of available labels can be found in the table below:

Label Type	Available Labels
AF	AF350, AF488, AF555, AF594, AF647, AF680, AF700, AF750
Proteins	HRP, Alkaline Phosphatase, Streptavidin
Tandems	APC, APC/Cy7, APC/AF750, APC/iFluor™ 700, APC/iFluor™ 750, PE, PE/Cy5, PE/Cy7, PE/AF610, PE/AF700, PE/iFluor™ 594, PE/iFluor™ 647, PE/iFluor™ 700, PE/iFluor™ 750, PE/Texas Red®, PerCP, PerCP/Cy5.5
Small Molecules	Biotin
Traditional Dyes	FITC (fluorescein), TRITC, PacBlue, PacOrange, Cy3, Cy5
iFluor	350, 405, 430, 450, 488, 514, 532, 546, 555, 560, 568, 594, 610, 633, 647, 660, 670, 680, 700, 710, 750, 790, 800, 810, 820, 840, 860, A7
mFluor	UV375, UV460, Violet 450, Violet 500, Violet 510, Violet 540, Blue 570, Green 620, Red 700, Red 780

For additional information about custom conjugations, please consult our services page

here

Antibody properties

Other names	Membrane Cofactor Protein
Clone	MEM-258
Host	Mouse
Isotype	IgG1
Reactivity	Cow, Human
Application	Flow Cytometry (FACS), Fluorescence Imaging

Spectral properties

Correction factor (260 nm)	0.08
Correction factor (280 nm)	0.08
Extinction coefficient (cm ^-1 M ^-1)	150000
Excitation (nm)	553
Emission (nm)	568
Quantum yield	0.1 ¹

Usage and storage

Intended use

Research Use Only (RUO)

Telephone
Fax
Email	sales@aatbio.com
International	See distributors
Bulk request	Inquire
Custom size	Inquire
Technical Support	Contact us
Request quotation	Request
Purchase order	Send to sales@aatbio.com
Shipping	Standard overnight for United States, inquire for international

Page updated on August 22, 2026