PRODUCT CODE: ET1610-62

Recombinant Topoisomerase I Monoclonal Antibody (ET1610-62)

  • Recombinant

Applications

  • WB

  • ICC

  • IF

  • IHC-P

  • FC

REACTIVITY

  • Human

  • Mouse

Western blot analysis of TOP1 on different lysates using anti-TOP1 antibody at 1/1,000 dilution.<br />
Positive control: <br />
Lane 1: HepG2 <br />
Lane 2: Jurkat <br />
Lane 3: MCF-7
  • Western blot analysis of TOP1 on different lysates using anti-TOP1 antibody at 1/1,000 dilution.<br />
Positive control: <br />
Lane 1: HepG2 <br />
Lane 2: Jurkat <br />
Lane 3: MCF-7
  • ICC staining TOP1 in Hela cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
  • ICC staining TOP1 in SHG-44 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
  • ICC staining TOP1 in 293 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
  • Immunohistochemical analysis of paraffin-embedded mouse brain tissue using anti-TOP1 antibody. Counter stained with hematoxylin.
  • Flow cytometric analysis of HepG2 cells with TOP1 antibody at 1/50 dilution (red) compared with an unlabelled control (cells without incubation with primary antibody; black). Alexa Fluor 488-conjugated goat anti rabbit IgG was used as the secondary antibody
Western blot analysis of TOP1 on different lysates using anti-TOP1 antibody at 1/1,000 dilution.
Positive control:
Lane 1: HepG2
Lane 2: Jurkat
Lane 3: MCF-7

Applications

  • WB

  • ICC

  • IF

  • IHC-P

  • FC

REACTIVITY

  • Human

  • Mouse

SPECIFICATIONS

Product Type

Recombinant Rabbit monoclonal primary

Product Name

Recombinant Topoisomerase I Monoclonal Antibody (ET1610-62)

Immunogen

Synthetic peptide within human top1 aa 1-50.

Host

Rabbit

Positive Control

Jurkat, MCF-7, Hela, HepG2, SHG-44, 293, mouse brain tissue.

Conjugation

Unconjugated

Clonality

Monoclonal

Clone Number

SC69-03

PROPERTIES

Form

Liquid

Storage Condition

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

Storage Buffer

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

Concentration

1 ug/ul

PURIFICATION

Protein A purified.

MOLECULAR WEIGHT

91 kDa

Isotype

IgG

APPLICATION DILUTION

  • WB

  • 1:1,000-1:5,000

  • ICC/IF

  • 1:50-1:500

  • IHC-P

  • 1:50-1:200

  • FC

  • 1:50-1:100

TARGET

UNIPROT #

PROTEIN NAME

DNA topoisomerase 1

GENE NAME

TOP1

SYNONYMS

TOP1

SEQUENCE SIMILARITIES

Belongs to the type IB topoisomerase family.

TISSUE SPECIFICITY

Endothelial cells.

POST-TRANSLATIONAL MODIFICATION

Sumoylated. Lys-117 is the main site of sumoylation. Sumoylation plays a role in partitioning TOP1 between nucleoli and nucleoplasm. Levels are dramatically increased on camptothecin (CPT) treatment.; Phosphorylation at Ser-506 by CK2 increases binding to supercoiled DNA and sensitivity to camptothecin.

SUBCELLULAR LOCATION

Nucleus, nucleolus. Nucleus, nucleoplasm. Note=Diffuse nuclear localization with some enrichment in nucleoli. On CPT treatment, cleared from nucleoli into nucleoplasm. Sumoylated forms found in both nucleoplasm and nucleoli.

FUNCTION

Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand then rotates around the intact phosphodiester bond on the opposing strand, thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone (By similarity). Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells. Involved in the circadian transcription of the core circadian clock component ARNTL/BMAL1 by altering the chromatin structure around the ROR response elements (ROREs) on the ARNTL/BMAL1 promoter.