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Rockland
Lac I Polyclonal Antibody
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FIGURE: 1 / 2
Lac I Antibody (600-401-B04) in WB
Western blot using Rocklands affinity purified anti-Lac I antibody shows detection of a 38 kDa band corresponding to recombinant Lac I (arrowhead). The blot was blocked with 5% BLOTTO in TTBS overnight at 4°C. Primary antibody was used at a 1:1,000 dilution followed by reaction with a 1:10,000 dilution of HRP goat anti-rabbit IgG. ECL was used for detection. Personal communication, S. Hughes & M. Abram, NCI, Bethesda, MD.
Product Details
600-401-B04
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Bacteria
Host/Isotype
Rabbit
/ IgG
Class
Polyclonal
Type
Antibody
Immunogen
This affinity purified antibody was prepared from whole rabbit serum produced by repeated immunizations with a full-length recombinant Lac I protein.
Conjugate
Form
Liquid
Concentration
1 mg/mL
Purification
Affinity chromatography
Storage buffer
0.02M potassium phosphate, pH 7.2, with 0.15M NaCl
Contains
0.01% sodium azide
Storage conditions
-20°C, Avoid Freeze/Thaw Cycles
Shipping conditions
Ambient (domestic); Wet ice (international)
Product Specific Information
Store vial at -20° C prior to opening. Aliquot contents and freeze at -20° C or below for extended storage. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4° C as an undiluted liquid. Dilute only prior to immediate use.
This antibody reacts with recombinant Lac I protein. A BLAST analysis was used to suggest cross-reactivity with Lac I from DNA-binding transcriptional repressor in Escherichia coli (strain DH10B) and transcriptional repressor of the lac operon in Shigella sonnei (strain Ss046) based on a 100% homology with the immunizing sequence. Cross-reactivity with Lac I from other sources has not been determined.
Target Information
The lac repressor protein (Lac I) is an important genetic control protein. It controls the expression of the lactose metabolizing enzymes in Escherichia coli. This regulation involves specific recognition of the operator DNA sequence (Lac O) and consequent inhibition of transcription initiation by RNA polymerase; modulation of binding at this target site by small sugar molecules, inducers, provides the basis for regulation. Different ligand binding activities are associated with the isolated domains of Lac I: specific and nonspecific DNA binding with the NH2 termini, and inducer and specific DNA binding with the core protein. This antibody could possibly be used to recover and purify protein/nucleic acid complexes (host and viral proteins associated with the viral DNA) from infected cells.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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