Immunoglobulin-binding protein 1

<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

<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

• enzyme binding Source: UniProtKB <p>Inferred from Physical Interaction</p> <p>Covers physical interactions between the gene product of interest and another molecule (or ion, or complex).</p> <p>More information in the <a href="http://geneontology.org/page/guide-go-evidence-codes#ipi">GO evidence code guide</a></p> Inferred from physical interactionⁱ
  • "MID1 and MID2 homo- and heterodimerise to tether the rapamycin-sensitive PP2A regulatory subunit, Alpha 4, to microtubules: implications for the clinical variability of X-linked Opitz GBBB syndrome and other developmental disorders."
    Short K.M., Hopwood B., Yi Z., Cox T.C.
    BMC Cell Biol. 3:1-1(2002) [PubMed] [Europe PMC] [Abstract]
• mitogen-activated protein kinase kinase binding Source: UniProtKBInferred from physical interactionⁱ
  • "Cytokine activation of p38 mitogen-activated protein kinase and apoptosis is opposed by alpha-4 targeting of protein phosphatase 2A for site-specific dephosphorylation of MEK3."
    Prickett T.D., Brautigan D.L.
    Mol Cell Biol 27:4217-4227(2007) [PubMed] [Europe PMC] [Abstract]
• protein-containing complex binding Source: MGI
• protein domain specific binding Source: UniProtKB <p>Inferred from Direct Assay</p> <p>Used to indicate a direct assay for the function, process or component indicated by the GO term.</p> <p>More information in the <a href="http://geneontology.org/page/guide-go-evidence-codes#ida">GO evidence code guide</a></p> Inferred from direct assayⁱ
  • "MID1 and MID2 homo- and heterodimerise to tether the rapamycin-sensitive PP2A regulatory subunit, Alpha 4, to microtubules: implications for the clinical variability of X-linked Opitz GBBB syndrome and other developmental disorders."
    Short K.M., Hopwood B., Yi Z., Cox T.C.
    BMC Cell Biol. 3:1-1(2002) [PubMed] [Europe PMC] [Abstract]
• protein phosphatase 2A binding Source: MGI
• protein phosphatase regulator activity Source: MGI

GO - Biological processⁱ

• B cell activation Source: UniProtKB-KW
• negative regulation of apoptotic signaling pathway Source: MGI <p>Inferred from Mutant Phenotype</p> <p>Describes annotations that are concluded from looking at variations or changes in a gene product such as mutations or abnormal levels and includes techniques such as knockouts, overexpression, anti-sense experiments and use of specific protein inhibitors.</p> <p>More information in the <a href="http://geneontology.org/page/guide-go-evidence-codes#imp">GO evidence code guide</a></p> Inferred from mutant phenotypeⁱ
  • "The PP2A-associated protein alpha4 is an essential inhibitor of apoptosis."
    Kong M., Fox C.J., Mu J., Solt L., Xu A., Cinalli R.M., Birnbaum M.J., Lindsten T., Thompson C.B.
    Science 306:695-698(2004) [PubMed] [Europe PMC] [Abstract]
• negative regulation of cysteine-type endopeptidase activity involved in apoptotic process Source: MGI
• negative regulation of protein dephosphorylation Source: UniProtKBInferred from direct assayⁱ
  • "Cytokine activation of p38 mitogen-activated protein kinase and apoptosis is opposed by alpha-4 targeting of protein phosphatase 2A for site-specific dephosphorylation of MEK3."
    Prickett T.D., Brautigan D.L.
    Mol Cell Biol 27:4217-4227(2007) [PubMed] [Europe PMC] [Abstract]
  • "Regulation of protein phosphatase 2A catalytic activity by alpha4 protein and its yeast homolog Tap42."
    Nanahoshi M., Nishiuma T., Tsujishita Y., Hara K., Inui S., Sakaguchi N., Yonezawa K.
    Biochem Biophys Res Commun 251:520-526(1998) [PubMed] [Europe PMC] [Abstract]
• negative regulation of stress-activated MAPK cascade Source: MGI
• negative regulation of transcription by RNA polymerase II Source: MGI
• positive regulation of dephosphorylation Source: UniProtKBInferred from mutant phenotypeⁱ
  • "The PP2A-associated protein alpha4 is an essential inhibitor of apoptosis."
    Kong M., Fox C.J., Mu J., Solt L., Xu A., Cinalli R.M., Birnbaum M.J., Lindsten T., Thompson C.B.
    Science 306:695-698(2004) [PubMed] [Europe PMC] [Abstract]
• positive regulation of transcription by RNA polymerase II Source: UniProtKBInferred from mutant phenotypeⁱ
  • "The PP2A-associated protein alpha4 is an essential inhibitor of apoptosis."
    Kong M., Fox C.J., Mu J., Solt L., Xu A., Cinalli R.M., Birnbaum M.J., Lindsten T., Thompson C.B.
    Science 306:695-698(2004) [PubMed] [Europe PMC] [Abstract]
• regulation of dephosphorylation Source: GO_Central <p>Inferred from Biological aspect of Ancestor</p> <p>A type of phylogenetic evidence whereby an aspect of a descendent is inferred through the characterization of an aspect of a ancestral gene.</p> <p>More information in the <a href="http://geneontology.org/page/guide-go-evidence-codes#iba">GO evidence code guide</a></p> Inferred from biological aspect of ancestorⁱ
  • "Phylogenetic-based propagation of functional annotations within the Gene Ontology consortium."
    Gaudet P., Livstone M.S., Lewis S.E., Thomas P.D.
    Brief Bioinform 12:449-462(2011) [PubMed] [Europe PMC] [Abstract]
• regulation of microtubule-based movement Source: MGI
• response to interleukin-1 Source: MGI
• response to tumor necrosis factor Source: MGI

<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

<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

Organism-specific databases

<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

• UniProt annotation
• GO - Cellular component

Keywords - Cellular componentⁱ

<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

Molecule processing

Amino acid modifications

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationⁱ

Sites

Keywords - PTMⁱ

Proteomic databases

2D gel databases

PTM databases

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressionⁱ

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityⁱ

Gene expression databases

<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

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsⁱ

GO - Molecular functionⁱ

• enzyme binding Source: UniProtKBInferred from physical interactionⁱ
  • "MID1 and MID2 homo- and heterodimerise to tether the rapamycin-sensitive PP2A regulatory subunit, Alpha 4, to microtubules: implications for the clinical variability of X-linked Opitz GBBB syndrome and other developmental disorders."
    Short K.M., Hopwood B., Yi Z., Cox T.C.
    BMC Cell Biol. 3:1-1(2002) [PubMed] [Europe PMC] [Abstract]
• mitogen-activated protein kinase kinase binding Source: UniProtKBInferred from physical interactionⁱ
  • "Cytokine activation of p38 mitogen-activated protein kinase and apoptosis is opposed by alpha-4 targeting of protein phosphatase 2A for site-specific dephosphorylation of MEK3."
    Prickett T.D., Brautigan D.L.
    Mol Cell Biol 27:4217-4227(2007) [PubMed] [Europe PMC] [Abstract]
• protein domain specific binding Source: UniProtKBInferred from direct assayⁱ
  • "MID1 and MID2 homo- and heterodimerise to tether the rapamycin-sensitive PP2A regulatory subunit, Alpha 4, to microtubules: implications for the clinical variability of X-linked Opitz GBBB syndrome and other developmental disorders."
    Short K.M., Hopwood B., Yi Z., Cox T.C.
    BMC Cell Biol. 3:1-1(2002) [PubMed] [Europe PMC] [Abstract]
• protein phosphatase 2A binding Source: MGI

Protein-protein interaction databases

Miscellaneous databases

<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

Secondary structure

3D structure databases

Miscellaneous databases

<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

Region

Compositional bias

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domainⁱ

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesⁱ

Phylogenomic databases

Family and domain databases

<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.

        10         20         30         40         50
MAASEDELLL PRLPELFETS KKLLEDVEVA TEPTGSRTIQ DKVSKGLELL 
        60         70         80         90        100
EKAAGMLSQL DLFSRNEDLE EIASTDLKYL MVPALQGALT MKQVNPSKRL 
       110        120        130        140        150
DHLQRAREHF VHFLTQCHCY HVAEFQLPQT KTNSAENNTA SSSMAYPNLV 
       160        170        180        190        200
AMASQRQAKI ERYKQKKEVE HRLSALKSAV ESGQADDERV REYHLLHLRR 
       210        220        230        240        250
WIAVSLEELE SIDQEIKILK EKDSPREETA CHSSLPEKPP MKPFILTRNK 
       260        270        280        290        300
AQAKVFGTGY PSLATMTVSD WYEQHQKYGV LPDRGIAKPA SADFQRAAQQ 
       310        320        330        340
QEDQEQKDEE SEEKALHRMR EWDDWKDTHP RGYGNRQNMG            

Sequence databases

Genome annotation databases

<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

• 90% Identity
• 50% Identity

<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

3D structure databases

Protein-protein interaction databases

PTM databases

2D gel databases

Proteomic databases

Protocols and materials databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Miscellaneous databases

Gene expression databases

Family and domain databases

<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 section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousⁱ

Keywords - Technical termⁱ

Documents

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