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

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

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 affinity 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

Topoisomerase I

SYNONYMS

DNA topoisomerase 1 antibody; DNA topoisomerase I antibody; NUP98 fusion gene antibody; TOP 1 antibody; TOP I antibody; TOP1 antibody; TOP1_HUMAN antibody; TOPI antibody; Topoisomerase (DNA) I antibody; Topoisomerase 1 antibody; Topoisomerase1 antibody; TopoisomeraseI antibody; Type I DNA topoisomerase antibody

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, nucleoplasm.

FUNCTION

DNA topoisomerases play essential roles in many DNA metabolic processes including DNA repair. Topoisomerases can introduce DNA damage upon exposure to drugs that stabilize the covalent protein-DNA intermediate of the topoisomerase reaction. Lesions in DNA are also able to trap topoisomerase-DNA intermediates. DNA topoisomerase I (Top1) catalyzes the relaxation of supercoiled DNA by a mechanism of transient DNA strand cleavage characterized by the formation of a phosphotyrosyl bond between the DNA end and active site tyrosine. The antitumor agent camptothecin (CPT) reversibly stabilizes the covalent enzyme-DNA intermediate by inhibiting DNA religation. When a replication fork collides with a DNA Top1 cleavage complex, the covalently bound enzyme must be removed from the DNA 3' end before recombination-dependent replication restart. The tyrosyl-DNA phosphodiesterase Tdp1 and the structure-specific endonuclease Rad1-Rad10 function as primary alternative pathways of Top1 repair in Saccharomyces cerevisiae. In the budding yeast S. cerevisiae, DNA topoisomerases I and II can functionally substitute for each other in removing positive and negative DNA supercoils.