DYKDDDDK Tag ( FLAG ) Mouse Monoclonal Antibody [A2-A4]

About this product

FLAG-tag, or FLAG octapeptide, or FLAG epitope, is a polypeptide protein tag that can be added to a protein using recombinant DNA technology, having the sequence motif DYKDDDDK (where D=aspartic acid, Y=tyrosine, and K=lysine). It is one of the most specific tags and it is an artificial antigen to which specific, high affinity monoclonal antibodies have been developed and hence can be used for protein purification by affinity chromatography and also can be used for locating proteins within living cells. It has been used to separate recombinant, overexpressed protein from wild-type protein expressed by the host organism. It can also be used in the isolation of protein complexes with multiple subunits, because its mild purification procedure tends not to disrupt such complexes. It has been used to obtain proteins of sufficient purity and quality to carry out 3D structure determination by x-ray crystallography. A FLAG-tag can be used in many different assays that require recognition by an antibody. If there is no antibody against a given protein, adding a FLAG-tag to a protein allows the protein to be studied with an antibody against the FLAG sequence. Examples are cellular localization studies by immunofluorescence, immunoprecipitation or detection by SDS PAGE protein electrophoresis and Western blotting. The peptide sequence of the FLAG-tag from the N-terminus to the C-terminus is: DYKDDDDK (1012 Da). Additionally, it may be used in tandem, commonly the 3xFLAG peptide: DYKDHD-G-DYKDHD-I-DYKDDDDK (with the final tag encoding an enterokinase cleavage site). It can be fused to the C-terminus or the N-terminus of a protein, or inserted within a protein. The tyrosine residue in the FLAG-tag can be sulfated, which can affect antibody recognition of the FLAG epitope. The FLAG-tag can be used in conjunction with other affinity tags, for example a polyhistidine tag (His-tag), HA-tag or myc-tag.

Specifications

Catalog number

M1403-2

Size / count

100 µL

Dry ice

No

Hazardous

No

Discontinued

No

CAS Number

9007-83-4

Product Name Alternative

DDDDK epitope tag antibody DDDK antibody ddk antibody DYKDDDDK antibody DYKDDDDK epitope tag antibody DYKDDDDK tag antibody ECS epitope tag antibody ECS tag antibody Enterokinase Cleavage Site epitope tag antibody Enterokinase Cleavage Site tag antibody FLAG antibody FLAG tag antibody

Host

Mouse

Species Reactivity

Universal

Immunogen

Synthetic peptide immune sequence is N-DYKDDDDK-C.

Isotype

IgG1

Conjugation

Non-conjugated

Type

Mouse monoclonal Antibody

Applications

WB, IP, ELISA, IF-Cell

Positive Control

DYKDDDDK Tag recombinant protein, C-terminal FLAG-tagged recombinant protein, N-terminal FLAG-tagged recombinant protein.

Concentration

2 mg/mL

Dilution

WB: 1:5,000-1:10,000;IP: 2-5 µg/ml.;IF-Cell: 1:100

Purity

Protein G affinity purified.

Form

Liquid

Buffer

1*PBS (pH7.4), 0.2% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.

Storage Conditions

Store at +4°C after thawing. Aliquot store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

Recombinant Antibody

No