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Entry version 68 (23 Feb 2022)
Sequence version 1 (05 Jul 2005)
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Protein

RNA cytosine-C(5)-methyltransferase NSUN2

Gene

nsun2

Organism
Xenopus laevis (African clawed frog)
Status
Reviewed-Annotation score:

Annotation score:5 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

RNA cytosine C5-methyltransferase that methylates cytosine to 5-methylcytosine (m5C) in various RNAs, such as tRNAs, mRNAs and some long non-coding RNAs (lncRNAs). Involved in various processes, such as epidermal stem cell differentiation, testis differentiation and maternal to zygotic transition during early development: acts by increasing protein synthesis; cytosine C5-methylation promoting tRNA stability and preventing mRNA decay. Methylates cytosine to 5-methylcytosine (m5C) at positions 34 and 48 of intron-containing tRNA(Leu)(CAA) precursors, and at positions 48, 49 and 50 of tRNA(Gly)(GCC) precursors. tRNA methylation is required generation of RNA fragments derived from tRNAs (tRFs). Also mediates C5-methylation of mitochondrial tRNAs. Catalyzes cytosine C5-methylation of mRNAs, leading to stabilize them and prevent mRNA decay. Cytosine C5-methylation of mRNAs also regulates mRNA export. Also mediates cytosine C5-methylation of non-coding RNAs, such as vault RNAs (vtRNAs), promoting their processing into regulatory small RNAs. Required for proper spindle assembly and chromosome segregation, independently of its methyltransferase activity.

By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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%5Fsection">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 sitei213S-adenosyl-L-methioninePROSITE-ProRule annotation1
Binding sitei240S-adenosyl-L-methioninePROSITE-ProRule annotation1
Binding sitei266S-adenosyl-L-methioninePROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei319NucleophilePROSITE-ProRule annotation1

<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 functionMethyltransferase, RNA-binding, Transferase, tRNA-binding
Biological processtRNA processing
LigandS-adenosyl-L-methionine

<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%5Fand%5Ftaxonomy%5Fsection">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:
RNA cytosine-C(5)-methyltransferase NSUN2Curated (EC:2.1.1.-By similarity)
Alternative name(s):
NOL1/NOP2/Sun domain family member 2By similarity
mRNA cytosine C(5)-methyltransferaseCurated (EC:2.1.1.-By similarity)
tRNA cytosine C(5)-methyltransferaseCurated (EC:2.1.1.-By similarity, EC:2.1.1.203By similarity)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:nsun2By similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 laevis (African clawed frog)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri8355 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraPipoideaPipidaeXenopodinaeXenopusXenopus

Organism-specific databases

Xenopus laevis and tropicalis biology and genomics resource

More...
Xenbasei
XB-GENE-962628, nsun2.S

<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

Cytoplasm, Cytoskeleton, Mitochondrion, Nucleus, 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 describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002892261 – 698RNA cytosine-C(5)-methyltransferase NSUN2Add BLAST698

Keywords - PTMi

Phosphoprotein

<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

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
100882, 1 interactor

<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
Q4V7N2

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

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>Regioni1 – 28DisorderedSequence analysisAdd BLAST28
Regioni182 – 188S-adenosyl-L-methionine bindingPROSITE-ProRule annotation7
Regioni472 – 496DisorderedSequence analysisAdd BLAST25

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 biasi12 – 28Basic and acidic residuesSequence analysisAdd BLAST17
Compositional biasi479 – 496Polar residuesSequence analysisAdd BLAST18

<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

Belongs to the class I-like SAM-binding methyltransferase superfamily. RsmB/NOP family. TRM4 subfamily.PROSITE-ProRule annotation

Phylogenomic databases

Identification of Orthologs from Complete Genome Data

More...
OMAi
QLFTEYV

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001678, MeTrfase_RsmB/NOP2
IPR023267, RCMT
IPR023270, RCMT_NCL1
IPR029063, SAM-dependent_MTases

The PANTHER Classification System

More...
PANTHERi
PTHR22808, PTHR22808, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01189, Methyltr_RsmB-F, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR02008, RCMTFAMILY
PR02011, RCMTNCL1

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF53335, SSF53335, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51686, SAM_MT_RSMB_NOP, 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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

Q4V7N2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGRKNRRNRQ RRTEQRSPAE EERRKAREQA AWEGGYPEII KENKLFEHYY
60 70 80 90 100
QELKIVPDGE WDKFMDALRE PLPATIRITG YKSHAKEILH CLKEKYFKEL
110 120 130 140 150
PDIEVDGQKI EAPQPLSWYP EELAWHTNLS RKIIRKSPEL EKFHQFLVSE
160 170 180 190 200
TESGNISRQE AVSMIPPVLL NVQPHHKILD MCAAPGSKTA QIIEMLHADM
210 220 230 240 250
NVPFPEGFVI ANDVDNKRCY LLVHQAKRLN SPCIMVVNHD ASSIPRLLIE
260 270 280 290 300
NNGSREVLYY DRILCDVPCS GDGTMRKNID VWKKWTTLNS LQLHGLQIRI
310 320 330 340 350
ATRGVEQLAE GGRMVYSTCS LNPVEDEAVI VSLLDKSEGS LELADVASEL
360 370 380 390 400
PGLKWMPGIT QWRVMTKEGQ WFEKWEDVPT SRHTQIRPTM FPLKDEEKLK
410 420 430 440 450
SMNLNRCMRI LPHHQNTGGF FVAVLIKKAP MPWNKRQPKL QRRPPVSVCD
460 470 480 490 500
ASVAPEIVKA VADISAIADE PAVDAENGET KPCTNQSGSS KTDSVCCPPP
510 520 530 540 550
SKKMKLFGFK EDPFVFLSED DPIFEPIQKF YALDPSFPKK NLLTRTQEGK
560 570 580 590 600
KRQLYMVSKE LRNVLLHNSE KMKVINTGIK VLCRNNDGEQ YGCAYRLAQE
610 620 630 640 650
GIYSLYPFIN ARILTVSVED IKVLLTQENP FLSKFSKETQ KQANNLDMGS
660 670 680 690
IVLKYEPDPQ QPETLQCPIV LCGWRGKTSI RSFVFFLHRI NLVQWIFI
Length:698
Mass (Da):80,051
Last modified:July 5, 2005 - 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:i3AD1F0DEF6CCBB43
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
BC097814 mRNA Translation: AAH97814.1

NCBI Reference Sequences

More...
RefSeqi
NP_001084513.1, NM_001091044.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

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GeneIDi
414460

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
xla:414460

<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
BC097814 mRNA Translation: AAH97814.1
RefSeqiNP_001084513.1, NM_001091044.1

3D structure databases

SMRiQ4V7N2
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi100882, 1 interactor

Protocols and materials databases

The DNASU plasmid repository

More...
DNASUi
414460

Genome annotation databases

GeneIDi414460
KEGGixla:414460

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
414460
XenbaseiXB-GENE-962628, nsun2.S

Phylogenomic databases

OMAiQLFTEYV

Family and domain databases

InterProiView protein in InterPro
IPR001678, MeTrfase_RsmB/NOP2
IPR023267, RCMT
IPR023270, RCMT_NCL1
IPR029063, SAM-dependent_MTases
PANTHERiPTHR22808, PTHR22808, 1 hit
PfamiView protein in Pfam
PF01189, Methyltr_RsmB-F, 1 hit
PRINTSiPR02008, RCMTFAMILY
PR02011, RCMTNCL1
SUPFAMiSSF53335, SSF53335, 1 hit
PROSITEiView protein in PROSITE
PS51686, SAM_MT_RSMB_NOP, 1 hit

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 nameiNSUN2_XENLA
<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: Q4V7N2
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: May 29, 2007
Last sequence update: July 5, 2005
Last modified: February 23, 2022
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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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