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TOP3B

topoisomerase (DNA) III beta

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-(5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand than undergoes passage around the unbroken strand thus removing DNA supercoils. Finally, in the religation step, the DNA 3'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone (By similarity). Possesses negatively supercoiled DNA relaxing activity.

Gene Name: topoisomerase (DNA) III beta
Family/Subfamily: Topoisomerase
Synonyms: TOP3B, DNA topoisomerase 3-beta-1, DNA topoisomerase III beta-1, Topoisomerase (DNA) III beta, TOP3B1, Topoisomerase III beta
Target Sequences: NM_003935 NP_003926.1 O95985

☰ Filters
Antibodies (21)
Proteins (2)
Primary (21)
Recombinant (2)
TOP3B (23)
Human (21)
Mouse (12)
Rat (2)
Bovine (1)
Dog (1)
Pig (1)
IHC (2)
IHC-P (1)
WB (21)
ELISA (8)
IF (1)
IP (1)
Peptide-ELISA (2)
rabbit (21)
IgG (11)
polyclonal pc (21)
APC (1)
APC Conjugated (2)
Azide-free (1)
Biotin Conjugated (2)
Cy3 Conjugated (1)
Cy7 Conjugated (1)
FITC Conjugated (2)
HRP Conjugated (2)
PE Conjugated (2)
Unconjugated (9)
aa826-854 (7)
30-110 aa, N-terminal (1)
N-Terminus (1)
aa51-100 (1)
No (23)
GST (1)
His-T7, N-terminus (1)
Human (2)
E. coli (1)
Wheat Germ Extract (1)
Purified (2)
TOP3B Antibody - Immunohistochemical analysis of Topoisomerase 3 beta1 staining in human brain formalin fixed paraffin embedded tissue section. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0). The section was then incubated with the antibody at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with hematoxylin and mounted with DPX.
Select
TOP3B Rabbit anti-Human Polyclonal (N-Terminus) Antibody
Mouse, Dog, Bovine, Rat, Pig, Human
IHC, IHC-P, IP, WB
Unconjugated
100 µl/$299
TOP3B Antibody - Western blot of Topo III beta-1 antibody
Select
TOP3B Rabbit anti-Human Polyclonal (30-110 aa, N-terminal) Antibody
Mouse, Human
ELISA, IHC, WB
Unconjugated
50 µg/$295; 100 µg/$335; 200 µg/$394
TOP3B Antibody - Staining HepG2 cells by IF/ICC. The samples were fixed with PFA and permeabilized in 0.1% Triton X-100, then blocked in 10% serum for 45 min at 25°C. The primary antibody was diluted at 1:200 and incubated with the sample for 1 hour at 37°C. An Alexa Fluor 594 conjugated goat anti-rabbit IgG (H+L) antibody, diluted at 1/600, was used as secondary antibody.
Select
TOP3B Rabbit anti-Human Polyclonal Antibody
Mouse, Human
IF, Peptide-ELISA, WB
Unconjugated
100 µl/$379; 200 µl/$421
Select
TOP3B Rabbit anti-Human Polyclonal (aa826-854) Antibody
Mouse, Human
ELISA, WB
Unconjugated
200 µl/$734
Select
TOP3B Rabbit anti-Human Polyclonal (aa826-854) (Biotin) Antibody
Mouse, Human
ELISA, WB
Biotin Conjugated
200 µl/$952
Select
TOP3B Rabbit anti-Human Polyclonal (aa826-854) (FITC) Antibody
Mouse, Human
ELISA, WB
FITC Conjugated
200 µl/$952
Select
TOP3B Rabbit anti-Human Polyclonal (aa826-854) (APC) Antibody
Mouse, Human
ELISA, WB
APC Conjugated
200 µl/$952
Select
TOP3B Rabbit anti-Human Polyclonal (aa826-854) (Azide-free) (HRP) Antibody
Mouse, Human
ELISA, WB
HRP Conjugated, Azide-free
200 µl/$952
Select
TOP3B Rabbit anti-Human Polyclonal (aa826-854) (PE) Antibody
Mouse, Human
ELISA, WB
PE Conjugated
200 µl/$952
TOP3B Antibody - Western blot analysis of extracts from HepG2 cells, COLO205 cells and HUVEC cells, using TOP3B antibody.
Select
TOP3B Rabbit anti-Human Polyclonal Antibody
Mouse, Human
ELISA, WB
Unconjugated
100 µg/$357
TOP3B Antibody - Western blot analysis of lysates from HepG2, COLO205, and HUVEC cells, using TOP3B Antibody. The lane on the right is blocked with the synthesized peptide.
Select
TOP3B Rabbit anti-Human Polyclonal (aa51-100) Antibody
Mouse, Human
Peptide-ELISA, WB
Unconjugated
50 µl/$334; 100 µl/$397
TOP3B Antibody - TOP3B Antibody western blot of mouse bladder tissue lysates (35 ug/lane). The TOP3B antibody detected the TOP3B protein (arrow).
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TOP3B Rabbit anti-Human Polyclonal (aa826-854) Antibody
Mouse, Human
WB
Unconjugated
400 µl/$393
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal Antibody
Human
WB
Unconjugated
100 µl/$309; 200 µl/$351; 500 µl/$491; 1 ml/$561; 2 ml/$755; 5 ml/$1,225
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (HRP) Antibody
Human
WB
HRP Conjugated
100 µl/$338; 200 µl/$393; 500 µl/$575; 1 ml/$702; 2 ml/$939; 5 ml/$1,593
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (Biotin) Antibody
Human
WB
Biotin Conjugated
100 µl/$319; 200 µl/$365; 500 µl/$519; 1 ml/$596; 2 ml/$824; 5 ml/$1,348
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (FITC) Antibody
Human
WB
FITC Conjugated
100 µl/$348; 200 µl/$407; 500 µl/$605; 1 ml/$755; 2 ml/$993; 5 ml/$1,716
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (Cy3) Antibody
Human
WB
Cy3 Conjugated
100 µl/$407; 200 µl/$491; 500 µl/$850; 1 ml/$1,008; 2 ml/$1,308; 5 ml/$2,451
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (APC) Antibody
Human
WB
APC Conjugated
100 µl/$407; 200 µl/$491; 500 µl/$850; 1 ml/$1,008; 2 ml/$1,308; 5 ml/$2,451
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (APC, Cy7) Antibody
Human
WB
APC, Cy7 Conjugated
100 µl/$505; 200 µl/$648; 500 µl/$1,152; 1 ml/$1,401; 2 ml/$1,961; 5 ml/$3,676
TOP3B Antibody - Western Blot; Sample: Recombinant protein.
Select
TOP3B Rabbit anti-Human Polyclonal (PE) Antibody
Human
WB
PE Conjugated
100 µl/$407; 200 µl/$491; 500 µl/$850; 1 ml/$1,008; 2 ml/$1,308; 5 ml/$2,451
TOP3B Antibody - Western blot analysis of extracts of various cells.
Select
TOP3B Rabbit anti-Human Polyclonal Antibody
Rat, Human
WB
Unconjugated
20 µl/$275; 50 µl/$311; 100 µl/$389; 200 µl/$503
TOP3B Protein - 12.5% SDS-PAGE of human TOP3B stained with Coomassie Blue
Select
Wheat Germ Extract
GST
120.56 kDa
2 µg/$439
TOP3B Protein - Recombinant Topoisomerase III Beta (TOP3b) by SDS-PAGE
Select
E. coli
His-T7, N-terminus
31.6kDa
10 µg/$272; 50 µg/$382; 200 µg/$765; 100 µg/$612; 1 mg/$1,822; 500 µg/$1,383; 5 mg/$2,781; 2 mg/$2,004
Viewing 1-23 of 23 product results



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For RESEARCH USE ONLY. Intended for use by laboratory professionals. Not intended for human diagnostic or therapeutic purposes.

The data on this page has been compiled from LifeSpan internal sources, the National Center for Biotechnology Information (NCBI), and The Universal Protein Resource (UniProt).