Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Entry version 80 (29 Sep 2021)
Sequence version 1 (23 Sep 2008)
Previous versions | rss
Add a publicationFeedback
Protein

Breast cancer type 1 susceptibility protein

Gene
N/A
Organism
Homo sapiens (Human)
Status
Unreviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at transcript leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

E3 ubiquitin-protein ligase that specifically mediates the formation of 'Lys-6'-linked polyubiquitin chains and plays a central role in DNA repair by facilitating cellular responses to DNA damage. It is unclear whether it also mediates the formation of other types of polyubiquitin chains. The BRCA1-BARD1 heterodimer coordinates a diverse range of cellular pathways such as DNA damage repair, ubiquitination and transcriptional regulation to maintain genomic stability. Regulates centrosomal microtubule nucleation. Required for appropriate cell cycle arrests after ionizing irradiation in both the S-phase and the G2 phase of the cell cycle. Required for FANCD2 targeting to sites of DNA damage. Inhibits lipid synthesis by binding to inactive phosphorylated ACACA and preventing its dephosphorylation. Contributes to homologous recombination repair (HRR) via its direct interaction with PALB2, fine-tunes recombinational repair partly through its modulatory role in the PALB2-dependent loading of BRCA2-RAD51 repair machinery at DNA breaks. Component of the BRCA1-RBBP8 complex which regulates CHEK1 activation and controls cell cycle G2/M checkpoints on DNA damage via BRCA1-mediated ubiquitination of RBBP8. Acts as a transcriptional activator.

UniRule annotation

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine.UniRule annotation EC:2.3.2.27

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDNA-bindingUniRule annotation
Biological processCell cycleUniRule annotation, DNA damage, DNA recombinationUniRule annotation, DNA repairUniRule annotation, Ubl conjugation pathwayUniRule annotation

Enzyme and pathway databases

SignaLink: a signaling pathway resource with multi-layered regulatory networks

More...
SignaLinki
B4DES0

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Breast cancer type 1 susceptibility proteinUniRule annotation (EC:2.3.2.27UniRule annotation)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHomo sapiens (Human)Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri9606 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Keywords - Cellular componenti

ChromosomeUniRule annotation, NucleusUniRule annotation

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Proteomic databases

PeptideAtlas

More...
PeptideAtlasi
B4DES0

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Heterodimer with BARD1. Part of the BRCA1-associated genome surveillance complex (BASC), which contains BRCA1, MSH2, MSH6, MLH1, ATM, BLM, PMS2 and the MRE11-RAD50-NBN protein (MRN) complex. This association could be a dynamic process changing throughout the cell cycle and within subnuclear domains.

Component of the BRCA1-A complex, at least composed of BRCA1, BARD1, UIMC1/RAP80, ABRAXAS1, BRCC3/BRCC36, BABAM2 and BABAM1/NBA1.

Interacts (via the BRCT domains) with ABRAXAS1 (phosphorylated form); this is important for recruitment to sites of DNA damage. Can form a heterotetramer with two molecules of ABRAXAS1 (phosphorylated form).

Component of the BRCA1-RBBP8 complex.

Interacts (via the BRCT domains) with RBBP8 ('Ser-327' phosphorylated form); the interaction ubiquitinates RBBP8, regulates CHEK1 activation, and involves RBBP8 in BRCA1-dependent G2/M checkpoint control on DNA damage. Associates with RNA polymerase II holoenzyme.

Interacts with SMC1A, NELFB, DCLRE1C, CLSPN. CHEK1, CHEK2, BAP1, BRCC3, UBXN1 and PCLAF.

Interacts (via BRCT domains) with BRIP1 (phosphorylated form).

Interacts with FANCD2 (ubiquitinated form).

Interacts with H2AX (phosphorylated on 'Ser-140').

Interacts (via the BRCT domains) with ACACA (phosphorylated form); the interaction prevents dephosphorylation of ACACA.

Part of a BRCA complex containing BRCA1, BRCA2 and PALB2.

Interacts directly with PALB2; the interaction is essential for its function in HRR.

Interacts directly with BRCA2; the interaction occurs only in the presence of PALB2 which serves as the bridging protein.

Interacts (via the BRCT domains) with LMO4; the interaction represses the transcriptional activity of BRCA1.

Interacts (via the BRCT domains) with CCAR2 (via N-terminus); the interaction represses the transcriptional activator activity of BRCA1.

Interacts with EXD2.

Interacts (via C-terminus) with DHX9; this interaction is direct and links BRCA1 to the RNA polymerase II holoenzyme.

UniRule annotation

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
B4DES0

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini491 – 585BRCTInterPro annotationAdd BLAST95
Domaini605 – 704BRCTInterPro annotationAdd BLAST100

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni183 – 235DisorderedSequence analysisAdd BLAST53
Regioni291 – 354DisorderedSequence analysisAdd BLAST64
Regioni414 – 445DisorderedSequence analysisAdd BLAST32

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and domains' section denotes the positions of regions of coiled coil within the protein.<p><a href='/help/coiled' target='_top'>More...</a></p>Coiled coili247 – 274Sequence analysisAdd BLAST28

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi183 – 201Polar residuesSequence analysisAdd BLAST19
Compositional biasi202 – 216Basic and acidic residuesSequence analysisAdd BLAST15
Compositional biasi220 – 235Polar residuesSequence analysisAdd BLAST16
Compositional biasi291 – 317Polar residuesSequence analysisAdd BLAST27
Compositional biasi327 – 341Polar residuesSequence analysisAdd BLAST15

Keywords - Domaini

Coiled coilSequence analysis

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.40.10, 1 hit
3.40.50.10190, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR031099, BRCA1-associated
IPR001357, BRCT_dom
IPR036420, BRCT_dom_sf
IPR013083, Znf_RING/FYVE/PHD

The PANTHER Classification System

More...
PANTHERi
PTHR13763, PTHR13763, 2 hits

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00533, BRCT, 2 hits

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF001734, BRCA1, 2 hits

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00292, BRCT, 2 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF52113, SSF52113, 2 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50172, BRCT, 2 hits

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

B4DES0-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MLKLLNQKKG PSQCPLCKND ITKRSLQEST RFSQLVEELL KIICAFQLDT
60 70 80 90 100
GLEYANSYNF AKKENNSPEH LKDEVSIIQS MGYRNRAKRL LQSEPENPSL
110 120 130 140 150
QETSLSVQLS NLGTVRTLRT KQRIQPQKTS VYIELGSDSS EDTVNKATYC
160 170 180 190 200
SVGDQELLQI TPQGTRDEIS LDSAKKAACE FSETDVTNTE HHQPSNNDLN
210 220 230 240 250
TTEKRAAERH PEKYQGEAAS GCESETSVSE DCSGLSSQSD ILTTQQRDTM
260 270 280 290 300
QHNLIKLQQE MAELEAVLEQ HGSQPSNSYP SIISDSSALE DLRNPEQSTS
310 320 330 340 350
EKVLTSQKSS EYPISQNPEG LSADKFEVSA DSSTSKNKEP GVERSSPSKC
360 370 380 390 400
PSLDDRWYMH SCSGSLQNRN YPSQEELIKV VDVEEQQLEE SGPHDLTETS
410 420 430 440 450
YLPRQDLEGT PYLESGISLF SDDPESDPSE DRAPESARVG NIPSSTSALK
460 470 480 490 500
VPQLKVAESA QSPAAAHTTD TAGYNAMEES VSREKPELTA STERVNKRMS
510 520 530 540 550
MVVSGLTPEE FMLVYKFARK HHITLTNLIT EETTHVVMKT DAEFVCERTL
560 570 580 590 600
KYFLGIAGGK WVVSYFWVTQ SIKERKMLNE HDFEVRGDVV NGRNHQGPKR
610 620 630 640 650
ARESQDRKIF RGLEICCYGP FTNMPTDQLE WMVQLCGASV VKELSSFTLG
660 670 680 690 700
TGVHPIVVVQ PDAWTEDNGF HAIGQMCEAP VVTREWVLDS VALYQCQELD
710
TYLIPQIPHS HY
Length:712
Mass (Da):79,623
Last modified:September 23, 2008 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iBE89A91A5001034A
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AK293762 mRNA Translation: BAG57181.1

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AK293762 mRNA Translation: BAG57181.1

3D structure databases

SMRiB4DES0
ModBaseiSearch...

Proteomic databases

PeptideAtlasiB4DES0

Enzyme and pathway databases

SignaLinkiB4DES0

Family and domain databases

Gene3Di3.30.40.10, 1 hit
3.40.50.10190, 2 hits
InterProiView protein in InterPro
IPR031099, BRCA1-associated
IPR001357, BRCT_dom
IPR036420, BRCT_dom_sf
IPR013083, Znf_RING/FYVE/PHD
PANTHERiPTHR13763, PTHR13763, 2 hits
PfamiView protein in Pfam
PF00533, BRCT, 2 hits
PIRSFiPIRSF001734, BRCA1, 2 hits
SMARTiView protein in SMART
SM00292, BRCT, 2 hits
SUPFAMiSSF52113, SSF52113, 2 hits
PROSITEiView protein in PROSITE
PS50172, BRCT, 2 hits

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiB4DES0_HUMAN
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: B4DES0
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/TrEMBL: September 23, 2008
Last sequence update: September 23, 2008
Last modified: September 29, 2021
This is version 80 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiUnreviewed (UniProtKB/TrEMBL)
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again