Name: XFD647 Anti-rabbit/ cat/ human CD81 Antibody *M38*
Brand: AAT Bioquest
SKU: 10810180
Availability: InStock

XFD647 Anti-rabbit/ cat/ human CD81 Antibody

M38

The M38 monoclonal antibody binds with rabbit/ cat/ human CD81, a 26 kD member of the TM4SF tetraspanin family commonly found on the surface of nks, epithelial cells, T cells and natural killer cells. CD81 is associated with a variety of biologically interesting macromolecules/ligands, for example, CD21, leu-13 and CD19. CD81 is a fairly uncommon antibody target, with a little more than 6200 publications in the last decade. Even still, CD81 is vital to neuroscience and transcription factors research, typically serving as a phenotypic marker for differentiating cell types in flow cytometric applications. This antibody was purified through affinity chromatography and conjugated to XFD647 (ex/em = 650/671 nm). XFD647 is manufactured by AAT Bioquest, and it has a chemical structure similar to that of Alexa Fluor® 647 (Alexa Fluor® is the trademark of Thermo Fisher). It is compatible with the 642 nm laser and 702/85 nm bandpass filter (for example, as in the Luminex Amnis ImageStream).

Datasheet

COA

Catalog	Size	Price	Quantity
10810180	100 tests	Price
10810181	500 tests	Price

Conjugation

We provide custom conjugation services for this antibody (e.g. labeling of CD81 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	TAPA1, S5.7
Clone	M38
Host	Mouse
Isotype	IgG1
Reactivity	Rabbit, Cat, Human
Application	Flow Cytometry (FACS), Fluorescence Imaging

Spectral properties

Correction factor (260 nm)	0.00
Correction factor (280 nm)	0.03
Extinction coefficient (cm ^-1 M ^-1)	239000
Excitation (nm)	650
Emission (nm)	671
Quantum yield	0.33 ¹

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22

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 April 26, 2026