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Entry version 68 (16 Oct 2019)
Sequence version 1 (03 Mar 2009)
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Protein

Eukaryotic initiation factor 4A-III

Gene

eif4a3

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

Annotation score:4 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

ATP-dependent RNA helicase. Involved in pre-mRNA splicing as component of the spliceosome. Core component of the splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junctions on mRNAs. The EJC is a dynamic structure consisting of core proteins and several peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. The EJC marks the position of the exon-exon junction in the mature mRNA for the gene expression machinery and the core components remain bound to spliced mRNAs throughout all stages of mRNA metabolism thereby influencing downstream processes including nuclear mRNA export, subcellular mRNA localization, translation efficiency and nonsense-mediated mRNA decay (NMD). Binds spliced mRNA in sequence-independent manner, 20-24 nucleotides upstream of mRNA exon-exon junctions (By similarity). Involved in craniofacial development (By similarity).By similarity

<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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei64ATP; via carbonyl oxygenBy similarity1
Binding sitei69ATPBy similarity1
Binding sitei346ATPBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi86 – 93ATPPROSITE-ProRule annotation8
Nucleotide bindingi89 – 94ATPBy similarity6
Nucleotide bindingi371 – 375ATPBy similarity5

<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 functionHelicase, Hydrolase, RNA-binding
Biological processmRNA processing, mRNA splicing, mRNA transport, Nonsense-mediated mRNA decay, Translation regulation, Transport
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-XTR-1169408 ISG15 antiviral mechanism
R-XTR-159236 Transport of Mature mRNA derived from an Intron-Containing Transcript
R-XTR-429947 Deadenylation of mRNA
R-XTR-72163 mRNA Splicing - Major Pathway
R-XTR-72187 mRNA 3'-end processing
R-XTR-73856 RNA Polymerase II Transcription Termination
R-XTR-975957 Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC)

<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:
Eukaryotic initiation factor 4A-III (EC:3.6.4.13By similarity)
Short name:
eIF-4A-III
Short name:
eIF4A-III
Alternative name(s):
ATP-dependent RNA helicase DDX48
ATP-dependent RNA helicase eIF4A-3
DEAD box protein 48
Eukaryotic translation initiation factor 4A isoform 3
<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:eif4a3
Synonyms:ddx48
<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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraPipoideaPipidaeXenopodinaeXenopusSilurana
<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-5773453 eif4a3

<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

Cytoplasm, Nucleus, Spliceosome

<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 describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003785621 – 415Eukaryotic initiation factor 4A-IIIAdd BLAST415

Proteomic databases

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

More...
PaxDbi
B7ZTW1

PRoteomics IDEntifications database

More...
PRIDEi
B7ZTW1

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSXETG00000013720 Expressed in 17 organ(s), highest expression level in gastrula

<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

Identified in the spliceosome C complex. Part of the mRNA splicing-dependent exon junction complex (EJC) complex; the core complex contains casc3, eif4a3, magoh and rbm8a.

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
8364.ENSXETP00000030049

<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
B7ZTW1

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>Domaini73 – 243Helicase ATP-bindingPROSITE-ProRule annotationAdd BLAST171
Domaini254 – 415Helicase C-terminalPROSITE-ProRule annotationAdd BLAST162

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>Motifi42 – 70Q motifAdd BLAST29
Motifi191 – 194DEAD boxCurated4

<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

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0327 Eukaryota
COG0513 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000155037

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000268797

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
B7ZTW1

KEGG Orthology (KO)

More...
KOi
K13025

Identification of Orthologs from Complete Genome Data

More...
OMAi
PMKAEDY

Database of Orthologous Groups

More...
OrthoDBi
726081at2759

TreeFam database of animal gene trees

More...
TreeFami
TF300466

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011545 DEAD/DEAH_box_helicase_dom
IPR014001 Helicase_ATP-bd
IPR001650 Helicase_C
IPR027417 P-loop_NTPase
IPR000629 RNA-helicase_DEAD-box_CS
IPR014014 RNA_helicase_DEAD_Q_motif

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00270 DEAD, 1 hit
PF00271 Helicase_C, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00487 DEXDc, 1 hit
SM00490 HELICc, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF52540 SSF52540, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00039 DEAD_ATP_HELICASE, 1 hit
PS51192 HELICASE_ATP_BIND_1, 1 hit
PS51194 HELICASE_CTER, 1 hit
PS51195 Q_MOTIF, 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>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.

B7ZTW1-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MAAAAVTAVA GVTSGSSRKR LLREEDMTKV EFETSEEVDV TPTFDTMGLR
60 70 80 90 100
EDLLRGIYAY GFEKPSAIQQ RAIKQIIKGR DVIAQSQSGT GKTATFCVSV
110 120 130 140 150
LQCLDIQVRE TQALILAPTR ELAGQIQKVL LALGDYMNVQ CHACIGGTNV
160 170 180 190 200
GEDIRKLDYG QHVVAGTPGR VFDMIRRRSL RTRAIKMLVL DEADEMLNKG
210 220 230 240 250
FKEQIYDVYR YLPPATQVCL ISATLPHEIL EMTNKFMTDP IRILVKRDEL
260 270 280 290 300
TLEGIKQFFV AVEREEWKFD TLCDLYDTLT ITQAVIFCNT KRKVDWLTEK
310 320 330 340 350
MREANFTVSS MHGDMPQKER ESIMKEFRSG ASRVLISTDV WARGLDVPQV
360 370 380 390 400
SLIINYDLPN NRELYIHRIG RSGRYGRKGV AINFVKNDDI RILRDIEQYY
410
STQIDEMPMN VADLI
Length:415
Mass (Da):47,155
Last modified:March 3, 2009 - 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:i28B166505E87383D
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti4A → V in AAI57178 (Ref. 1) Curated1

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
BC157177 mRNA Translation: AAI57178.1
BC171014 mRNA Translation: AAI71014.1

NCBI Reference Sequences

More...
RefSeqi
NP_001107349.1, NM_001113877.1

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSXETT00000030049; ENSXETP00000030049; ENSXETG00000013720

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
100135173

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
xtr:100135173

<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
BC157177 mRNA Translation: AAI57178.1
BC171014 mRNA Translation: AAI71014.1
RefSeqiNP_001107349.1, NM_001113877.1

3D structure databases

SMRiB7ZTW1
ModBaseiSearch...

Protein-protein interaction databases

STRINGi8364.ENSXETP00000030049

Proteomic databases

PaxDbiB7ZTW1
PRIDEiB7ZTW1

Genome annotation databases

EnsembliENSXETT00000030049; ENSXETP00000030049; ENSXETG00000013720
GeneIDi100135173
KEGGixtr:100135173

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
9775
XenbaseiXB-GENE-5773453 eif4a3

Phylogenomic databases

eggNOGiKOG0327 Eukaryota
COG0513 LUCA
GeneTreeiENSGT00940000155037
HOGENOMiHOG000268797
InParanoidiB7ZTW1
KOiK13025
OMAiPMKAEDY
OrthoDBi726081at2759
TreeFamiTF300466

Enzyme and pathway databases

ReactomeiR-XTR-1169408 ISG15 antiviral mechanism
R-XTR-159236 Transport of Mature mRNA derived from an Intron-Containing Transcript
R-XTR-429947 Deadenylation of mRNA
R-XTR-72163 mRNA Splicing - Major Pathway
R-XTR-72187 mRNA 3'-end processing
R-XTR-73856 RNA Polymerase II Transcription Termination
R-XTR-975957 Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC)

Gene expression databases

BgeeiENSXETG00000013720 Expressed in 17 organ(s), highest expression level in gastrula

Family and domain databases

InterProiView protein in InterPro
IPR011545 DEAD/DEAH_box_helicase_dom
IPR014001 Helicase_ATP-bd
IPR001650 Helicase_C
IPR027417 P-loop_NTPase
IPR000629 RNA-helicase_DEAD-box_CS
IPR014014 RNA_helicase_DEAD_Q_motif
PfamiView protein in Pfam
PF00270 DEAD, 1 hit
PF00271 Helicase_C, 1 hit
SMARTiView protein in SMART
SM00487 DEXDc, 1 hit
SM00490 HELICc, 1 hit
SUPFAMiSSF52540 SSF52540, 1 hit
PROSITEiView protein in PROSITE
PS00039 DEAD_ATP_HELICASE, 1 hit
PS51192 HELICASE_ATP_BIND_1, 1 hit
PS51194 HELICASE_CTER, 1 hit
PS51195 Q_MOTIF, 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 nameiIF4A3_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: B7ZTW1
Secondary accession number(s): A9ULA1
<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: July 7, 2009
Last sequence update: March 3, 2009
Last modified: October 16, 2019
This is version 68 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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Translation initiation factors
    List of translation initiation factor entries
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