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UniProtKB - A4IIA2 (IBP2_XENTR)

Entry version 65 (08 May 2019)
Sequence version 1 (01 May 2007)
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Protein

Insulin-like growth factor-binding protein 2

Gene

igfbp2

Organism
Xenopus tropicalis (Western clawed frog) (Silurana tropicalis)
Status
Reviewed-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

IGF-binding proteins prolong the half-life of the IGFs and have been shown to either inhibit or stimulate the growth promoting effects of the IGFs on cell culture. They alter the interaction of IGFs with their cell surface receptors (By similarity).By similarity

<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

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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 functionDevelopmental protein, Growth factor binding
Biological processGrowth regulation

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-XTR-381426 Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs)

<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:
Insulin-like growth factor-binding protein 2By similarity
Short name:
IGF-binding protein 2By similarity
Short name:
IGFBP-2By similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:igfbp2Imported
<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>OrganismiXenopus tropicalis (Western clawed frog) (Silurana tropicalis)
<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 identifieri8364 [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 lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Amphibia › Batrachia › Anura › Pipoidea › Pipidae › Xenopodinae › Xenopus › Silurana
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000008143 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Unassembled WGS sequence

Organism-specific databases

Xenopus laevis and tropicalis biology and genomics resource

More...Xenbasei		XB-GENE-487299 igfbp2

<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

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Secreted

<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

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 21Sequence analysisAdd BLAST21
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000038173722 – 284Insulin-like growth factor-binding protein 2Sequence analysisAdd BLAST263

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi187 ↔ 221PROSITE-ProRule annotationBy similarity
Disulfide bondi232 ↔ 243PROSITE-ProRule annotationBy similarity
Disulfide bondi245 ↔ 266PROSITE-ProRule annotationBy similarity

Keywords - PTMi

Disulfide bond

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		A4IIA2

PRoteomics IDEntifications database

More...PRIDEi		A4IIA2

<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

Interacts with igf1 and igf2.

By similarity

GO - Molecular functioni

Complete GO annotation on QuickGO ...

Protein-protein interaction databases

STRING: functional protein association networks

More...STRINGi		8364.ENSXETP00000042987

<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		A4IIA2

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>Domaini23 – 106IGFBP N-terminalPROSITE-ProRule annotationAdd BLAST84
Domaini184 – 266Thyroglobulin type-1PROSITE-ProRule annotationAdd BLAST83

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi261 – 263Cell attachment siteSequence analysis3

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		ENOG410IHUR Eukaryota
ENOG4111GWQ LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		HOG000253012

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		A4IIA2

Database of Orthologous Groups

More...OrthoDBi		979270at2759

Family and domain databases

Conserved Domains Database

More...CDDi		cd00191 TY, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		4.10.800.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR009030 Growth_fac_rcpt_cys_sf
IPR012210 IGFBP-2
IPR000867 IGFBP-like
IPR009168 IGFBP1-6
IPR022321 IGFBP_1-6_chordata
IPR017891 Insulin_GF-bd_Cys-rich_CS
IPR000716 Thyroglobulin_1
IPR036857 Thyroglobulin_1_sf

The PANTHER Classification System

More...PANTHERi		PTHR11551 PTHR11551, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00219 IGFBP, 1 hit
PF00086 Thyroglobulin_1, 1 hit

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR01976 IGFBPFAMILY
PR01978 IGFBPFAMILY2

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM00121 IB, 1 hit
SM00211 TY, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF57184 SSF57184, 1 hit
SSF57610 SSF57610, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00222 IGFBP_N_1, 1 hit
PS51323 IGFBP_N_2, 1 hit
PS00484 THYROGLOBULIN_1_1, 1 hit
PS51162 THYROGLOBULIN_1_2, 1 hit

<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>Sequence (1+)i

<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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

This entry has 1 described isoform and 2 potential isoforms that are computationally mapped.Show allAlign All

A4IIA2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGLSRYLLGL LLGVLCTPAP AEVLFRCPPC SPERLATCPG SAPRPPCAEL 
        60         70         80         90        100
VRAPGCGCCP VCARLEGESC GVYTARCAGG LRCYPHPGSE LPLQALVLGL 
       110        120        130        140        150
GTCGKRRDTE YGSSQERGTE LPEERSDNML VDNKLEAGPA VAGEAAPRKP 
       160        170        180        190        200
SKKEMKEIAV TRERANEQQR SKSNKSEDKK RPARSLCQLQ LDQVLERISG 
       210        220        230        240        250
MHLPDDRGPL EHLYALHIPN CDKNGFFNLK QCKMSVNGQR GECWCVNPIT 
       260        270        280 
GKALPGSPTI RGDPECHLYY TSPEEGRAHT QRAP
Length:284
Mass (Da):30,891
Last modified:May 1, 2007 - 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:iA60A73CCACB91E88
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
F6PTA4F6PTA4_XENTR
Insulin-like growth factor-binding ...
igfbp2
195Annotation score:

Annotation score:1 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>
F6RCF7F6RCF7_XENTR
Insulin-like growth factor-binding ...
igfbp2
172Annotation score:

Annotation score:1 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>

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
BC135928 mRNA Translation: AAI35929.1

NCBI Reference Sequences

More...RefSeqi		NP_001093707.1, NM_001100237.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...GeneIDi		100101720

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		xtr:100101720

<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
BC135928 mRNA Translation: AAI35929.1
RefSeqiNP_001093707.1, NM_001100237.1

3D structure databases

SMRiA4IIA2
ModBaseiSearch...

Protein-protein interaction databases

STRINGi8364.ENSXETP00000042987

Proteomic databases

PaxDbiA4IIA2
PRIDEiA4IIA2

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi100101720
KEGGixtr:100101720

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		3485
XenbaseiXB-GENE-487299 igfbp2

Phylogenomic databases

eggNOGiENOG410IHUR Eukaryota
ENOG4111GWQ LUCA
HOGENOMiHOG000253012
InParanoidiA4IIA2
OrthoDBi979270at2759

Enzyme and pathway databases

ReactomeiR-XTR-381426 Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs)

Family and domain databases

CDDicd00191 TY, 1 hit
Gene3Di4.10.800.10, 1 hit
InterProiView protein in InterPro
IPR009030 Growth_fac_rcpt_cys_sf
IPR012210 IGFBP-2
IPR000867 IGFBP-like
IPR009168 IGFBP1-6
IPR022321 IGFBP_1-6_chordata
IPR017891 Insulin_GF-bd_Cys-rich_CS
IPR000716 Thyroglobulin_1
IPR036857 Thyroglobulin_1_sf
PANTHERiPTHR11551 PTHR11551, 1 hit
PfamiView protein in Pfam
PF00219 IGFBP, 1 hit
PF00086 Thyroglobulin_1, 1 hit
PRINTSiPR01976 IGFBPFAMILY
PR01978 IGFBPFAMILY2
SMARTiView protein in SMART
SM00121 IB, 1 hit
SM00211 TY, 1 hit
SUPFAMiSSF57184 SSF57184, 1 hit
SSF57610 SSF57610, 1 hit
PROSITEiView protein in PROSITE
PS00222 IGFBP_N_1, 1 hit
PS51323 IGFBP_N_2, 1 hit
PS00484 THYROGLOBULIN_1_1, 1 hit
PS51162 THYROGLOBULIN_1_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...ProtoNeti		Search...

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 nameiIBP2_XENTR
<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: A4IIA2
<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/Swiss-Prot: September 1, 2009
Last sequence update: May 1, 2007
Last modified: May 8, 2019
This is version 65 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 statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<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

Complete proteome, Reference proteome
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