SubmitCancel

Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.

Q9Z321

- TOP3B_MOUSE

UniProt

Q9Z321 - TOP3B_MOUSE

(max 400 entries)x

Your basket is currently empty.

Select item(s) and click on "Add to basket" to create your own collection here
(400 entries max)

Protein
DNA topoisomerase 3-beta-1
Gene
Top3b, Top3b1
Organism
Mus musculus (Mouse)
Status
Reviewed - Annotation score: 4 out of 5 - Experimental evidence at transcript leveli

Functioni

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.

Catalytic activityi

ATP-independent breakage of single-stranded DNA, followed by passage and rejoining.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei336 – 3361O-(5'-phospho-DNA)-tyrosine intermediate By similarity

GO - Molecular functioni

  1. ATP binding Source: UniProtKB-KW
  2. DNA binding Source: UniProtKB-KW
  3. DNA topoisomerase type I activity Source: UniProtKB-EC
Complete GO annotation...

GO - Biological processi

  1. DNA topological change Source: InterPro
  2. chromosome segregation Source: MGI
Complete GO annotation...

Keywords - Molecular functioni

Isomerase, Topoisomerase

Keywords - Ligandi

DNA-binding

Names & Taxonomyi

Protein namesi
Recommended name:
DNA topoisomerase 3-beta-1 (EC:5.99.1.2)
Alternative name(s):
DNA topoisomerase III beta-1
Gene namesi
Name:Top3b
Synonyms:Top3b1
OrganismiMus musculus (Mouse)
Taxonomic identifieri10090 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeMusMus
ProteomesiUP000000589: Chromosome 16

Organism-specific databases

MGIiMGI:1333803. Top3b.

Subcellular locationi

GO - Cellular componenti

  1. condensed chromosome Source: MGI
Complete GO annotation...

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 862862DNA topoisomerase 3-beta-1
PRO_0000145193Add
BLAST

Proteomic databases

MaxQBiQ9Z321.
PaxDbiQ9Z321.
PRIDEiQ9Z321.

PTM databases

PhosphoSiteiQ9Z321.

Expressioni

Tissue specificityi

Highly expressed in testis.

Gene expression databases

ArrayExpressiQ9Z321.
BgeeiQ9Z321.
CleanExiMM_TOP3B.
GenevestigatoriQ9Z321.

Structurei

3D structure databases

ProteinModelPortaliQ9Z321.
SMRiQ9Z321. Positions 1-633.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini3 – 153151Toprim
Add
BLAST

Sequence similaritiesi

Contains 1 Toprim domain.

Phylogenomic databases

eggNOGiCOG0550.
GeneTreeiENSGT00530000063430.
HOGENOMiHOG000184378.
HOVERGENiHBG059857.
InParanoidiQ9Z321.
KOiK03165.
OMAiCQHSLSM.
OrthoDBiEOG7RBZ7N.
PhylomeDBiQ9Z321.
TreeFamiTF105288.

Family and domain databases

Gene3Di1.10.460.10. 2 hits.
2.70.20.10. 2 hits.
3.40.50.140. 1 hit.
InterProiIPR000380. Topo_IA.
IPR003601. Topo_IA_2.
IPR023406. Topo_IA_AS.
IPR013497. Topo_IA_cen.
IPR013824. Topo_IA_cen_sub1.
IPR013825. Topo_IA_cen_sub2.
IPR023405. Topo_IA_core_domain.
IPR003602. Topo_IA_DNA-bd.
IPR006171. Toprim_domain.
[Graphical view]
PANTHERiPTHR11390. PTHR11390. 1 hit.
PfamiPF01131. Topoisom_bac. 1 hit.
PF01751. Toprim. 1 hit.
[Graphical view]
PRINTSiPR00417. PRTPISMRASEI.
SMARTiSM00437. TOP1Ac. 1 hit.
SM00436. TOP1Bc. 1 hit.
SM00493. TOPRIM. 1 hit.
[Graphical view]
SUPFAMiSSF56712. SSF56712. 1 hit.
PROSITEiPS00396. TOPOISOMERASE_I_PROK. 1 hit.
PS50880. TOPRIM. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q9Z321-1 [UniParc]FASTAAdd to Basket

« Hide

MKTVLMVAEK PSLAQSIAKI LSRGNMSSHK GLNGACSVHK YTGTFAGQPV    50
HFKMTSVCGH VMTLDFLGKY NKWDKVDPAE LFSQAPTEKK EANPKLNMVK 100
FLQVEGRGCD YVVLWLDCDK EGENICFEVL DAVLPVMNNA HNGEKTVFRA 150
RFSSITDTDI CNAMTRLSEP DHNEALSVDA RQELDLRIGC AFTRFQTKYF 200
QGKYGDLDSS LISFGPCQTP TLGFCVERHD KIQSFKPETY WVLQAKVHTD 250
KEESLLLDWD RVRVFDWEIA QMFLNMTKLE KEAWVEATSR KEKAKQRPLA 300
LNTVEMLRVA SSALGMGPQH AMQIAERLYT QGYISYPRTE TTHYPENFDL 350
KGSLRQQANH PYWADSVKQL LAEGINRPRK GHDAGDHPPI TPMKSATEAE 400
LGGDAWRLYE YITRHFIATV SHDCKYLQST ISFRIGPEHF TCMGKTVISP 450
GFTEIMPWQS VPLEESLPTC QKGDTFTVGE VKMLEKQTSP PDYLTEAELI 500
TLMEKHGIGT DASIPVHINN ICQRNYVTVE SGRRLKPTNL GIVLVHGYYK 550
IDAELVLPTI RSAVEKQLNL IAQGKADYHQ VLGHTLDIFK RKFHYFVDSI 600
AGMDELMEVS FSPLAATGKP LSRCGKCHRF MKYIQAKPSR LHCSHCDETY 650
TLPQNGTIKL YKELRCPLDD FELVLWSSGS RGKSYPLCPY CYNHPPFRDM 700
KKGMGCNECT HPTCQHSLSM LGIGQCVECE NGVLVLDPTS GPKWKVACNT 750
CNVVAHCFEN AHRVRVSADT CNTCEAALLD VDFNKAKSPL PGNETQHTGC 800
IFCDPVFQEL VELKHAASCH PMHRGGPGRR QGRGRGRGRR PPGKPNPRRP 850
KDKMSALAAY FV 862
Length:862
Mass (Da):96,949
Last modified:May 1, 1999 - v1
Checksum:iD2C05429F79FD5CC
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AB013603 mRNA. Translation: BAA34227.1.
BC031723 mRNA. Translation: AAH31723.1.
CCDSiCCDS27990.1.
RefSeqiNP_035754.1. NM_011624.2.
XP_006522054.1. XM_006521991.1.
XP_006522055.1. XM_006521992.1.
XP_006522056.1. XM_006521993.1.
XP_006522057.1. XM_006521994.1.
XP_006522058.1. XM_006521995.1.
XP_006522059.1. XM_006521996.1.
UniGeneiMm.326089.

Genome annotation databases

EnsembliENSMUST00000023465; ENSMUSP00000023465; ENSMUSG00000022779.
ENSMUST00000119787; ENSMUSP00000112913; ENSMUSG00000022779.
GeneIDi21976.
KEGGimmu:21976.
UCSCiuc007yjj.1. mouse.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
AB013603 mRNA. Translation: BAA34227.1 .
BC031723 mRNA. Translation: AAH31723.1 .
CCDSi CCDS27990.1.
RefSeqi NP_035754.1. NM_011624.2.
XP_006522054.1. XM_006521991.1.
XP_006522055.1. XM_006521992.1.
XP_006522056.1. XM_006521993.1.
XP_006522057.1. XM_006521994.1.
XP_006522058.1. XM_006521995.1.
XP_006522059.1. XM_006521996.1.
UniGenei Mm.326089.

3D structure databases

ProteinModelPortali Q9Z321.
SMRi Q9Z321. Positions 1-633.
ModBasei Search...

PTM databases

PhosphoSitei Q9Z321.

Proteomic databases

MaxQBi Q9Z321.
PaxDbi Q9Z321.
PRIDEi Q9Z321.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

Ensembli ENSMUST00000023465 ; ENSMUSP00000023465 ; ENSMUSG00000022779 .
ENSMUST00000119787 ; ENSMUSP00000112913 ; ENSMUSG00000022779 .
GeneIDi 21976.
KEGGi mmu:21976.
UCSCi uc007yjj.1. mouse.

Organism-specific databases

CTDi 8940.
MGIi MGI:1333803. Top3b.

Phylogenomic databases

eggNOGi COG0550.
GeneTreei ENSGT00530000063430.
HOGENOMi HOG000184378.
HOVERGENi HBG059857.
InParanoidi Q9Z321.
KOi K03165.
OMAi CQHSLSM.
OrthoDBi EOG7RBZ7N.
PhylomeDBi Q9Z321.
TreeFami TF105288.

Miscellaneous databases

ChiTaRSi TOP3B. mouse.
NextBioi 301682.
PROi Q9Z321.
SOURCEi Search...

Gene expression databases

ArrayExpressi Q9Z321.
Bgeei Q9Z321.
CleanExi MM_TOP3B.
Genevestigatori Q9Z321.

Family and domain databases

Gene3Di 1.10.460.10. 2 hits.
2.70.20.10. 2 hits.
3.40.50.140. 1 hit.
InterProi IPR000380. Topo_IA.
IPR003601. Topo_IA_2.
IPR023406. Topo_IA_AS.
IPR013497. Topo_IA_cen.
IPR013824. Topo_IA_cen_sub1.
IPR013825. Topo_IA_cen_sub2.
IPR023405. Topo_IA_core_domain.
IPR003602. Topo_IA_DNA-bd.
IPR006171. Toprim_domain.
[Graphical view ]
PANTHERi PTHR11390. PTHR11390. 1 hit.
Pfami PF01131. Topoisom_bac. 1 hit.
PF01751. Toprim. 1 hit.
[Graphical view ]
PRINTSi PR00417. PRTPISMRASEI.
SMARTi SM00437. TOP1Ac. 1 hit.
SM00436. TOP1Bc. 1 hit.
SM00493. TOPRIM. 1 hit.
[Graphical view ]
SUPFAMi SSF56712. SSF56712. 1 hit.
PROSITEi PS00396. TOPOISOMERASE_I_PROK. 1 hit.
PS50880. TOPRIM. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

« Hide 'large scale' publications
  1. "Cloning of cDNA encoding a novel mouse DNA topoisomerase III (Topo IIIbeta) possessing negatively supercoiled DNA relaxing activity, whose message is highly expressed in the testis."
    Seki T., Seki M., Onodera R., Katada T., Enomoto T.
    J. Biol. Chem. 273:28553-28556(1998) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Strain: BALB/c.
    Tissue: Testis.
  2. "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
    The MGC Project Team
    Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
    Strain: FVB/N-3.
    Tissue: Mammary gland.

Entry informationi

Entry nameiTOP3B_MOUSE
AccessioniPrimary (citable) accession number: Q9Z321
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 30, 2000
Last sequence update: May 1, 1999
Last modified: July 9, 2014
This is version 113 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi