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UniProtKB - B0EXJ8 (HTOMT_CATRO)

Entry version 41 (23 Feb 2022)
Sequence version 1 (26 Feb 2008)
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Protein

Tabersonine 16-O-methyltransferase

Gene

16OMT

Organism
Catharanthus roseus (Madagascar periwinkle) (Vinca rosea)
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 protein 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

16-O-methyltransferase involved in the biosynthesis of vindoline. Highly specific for 16-hydroxytabersonine. No activity with tabersonine, 3-hydroxytyramine, 4-hydroxytyramine, 5-hydroxytryptamine (5HT), 2,3-dihydro-3-hydroxytabersonine, lochnericine, hoerhammericine, 16-hydroxy-2,3-dihydro-3-hydroxytabersonine, 16-hydroxylochnericine, 16-hydroxyhoerhammericine, quercetin, kaempferol and caffeic acid as substrates.

1 Publication

<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

<p>This subsection of the 'Function' section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

  1. KM=2.6 µM for 16-hydroxytabersonine1 Publication
  2. KM=21.7 µM for S-adenosyl-L-methionine1 Publication
  1. Vmax=0.58 mmol/sec/mg enzyme toward 16-hydroxytabersonine1 Publication
  2. Vmax=0.79 mmol/sec/mg enzyme toward S-adenosyl-L-methionine1 Publication

pH dependencei

Optimum pH is 7.0-7.5.1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: vindoline biosynthesis

This protein is involved in the pathway vindoline biosynthesis, which is part of Alkaloid biosynthesis.
View all proteins of this organism that are known to be involved in the pathway vindoline biosynthesis and in Alkaloid biosynthesis.

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 sitei222S-adenosyl-L-methioninePROSITE-ProRule annotation1
Binding sitei256S-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 sitei260Proton acceptorPROSITE-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

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 functionMethyltransferase, Transferase
Biological processAlkaloid metabolism
LigandS-adenosyl-L-methionine

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...BRENDAi		2.1.1.94, 1211

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...UniPathwayi		UPA00365

<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:
Tabersonine 16-O-methyltransferase1 Publication (EC:2.1.1.941 Publication)
<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:16OMT1 Publication
<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>OrganismiCatharanthus roseus (Madagascar periwinkle) (Vinca rosea)
<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 identifieri4058 [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 lineageiEukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliopsida › eudicotyledons › Gunneridae › Pentapetalae › asterids › lamiids › Gentianales › Apocynaceae › Rauvolfioideae › Vinceae › Catharanthinae › Catharanthus

<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

<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_00004120681 – 355Tabersonine 16-O-methyltransferaseAdd BLAST355

<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

Expressed in leaves and flowers. Detected in stems and roots. In leaves, expressed in epidermal cells.3 Publications

<p>This subsection of the 'Expression' section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified 'at the protein level'.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

Peak of expression in 8-day-old seedlings. Highest expression in the youngest leaf pair.1 Publication

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Up-regulated by herbivory.1 Publication

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer.

1 Publication

GO - Molecular functioni

Complete GO annotation on QuickGO ...

<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		B0EXJ8

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>Regioni198 – 201S-adenosyl-L-methionine bindingPROSITE-ProRule annotation4
Regioni222 – 223S-adenosyl-L-methionine bindingPROSITE-ProRule annotation2
Regioni242 – 243S-adenosyl-L-methionine bindingPROSITE-ProRule annotation2

<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. Cation-independent O-methyltransferase family. COMT subfamily.Curated

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.10.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR016461, COMT-like
IPR001077, O_MeTrfase_dom
IPR012967, Plant_MeTrfase_dimerisation
IPR029063, SAM-dependent_MTases
IPR036388, WH-like_DNA-bd_sf
IPR036390, WH_DNA-bd_sf

The PANTHER Classification System

More...PANTHERi		PTHR11746, PTHR11746, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF08100, Dimerisation, 1 hit
PF00891, Methyltransf_2, 1 hit

PIRSF; a whole-protein classification database

More...PIRSFi		PIRSF005739, O-mtase, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF46785, SSF46785, 1 hit
SSF53335, SSF53335, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS51683, SAM_OMT_II, 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.

B0EXJ8-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDVQSEEFRG AQAQIWSQSC SFITSASLKC AVKLGIPDTI DNHGKPITLS 
        60         70         80         90        100
ELTNALVPPV HPSKAPFIYR LMRVLAKNGF CSEEQLDGET EPLYSLTPSS 
       110        120        130        140        150
RILLKKEPLN LRGIVLTMAD PVQLKAWESL SDWYQNEDDS STAFETAHGK 
       160        170        180        190        200
NFWGYSSEHM EHAEFFNEAM ASDSQLISKL LIGEYKFLFE GLASLVDIGG 
       210        220        230        240        250
GTGTIAKAIA KNFPQLKCTV FDLPHVVANL ESKENVEFVA GDMFEKIPSA 
       260        270        280        290        300
NAIFLKWILH DWNDEDCVKI LKSCKKAIPA KGGKVIIIDM VMYSDKKDDH 
       310        320        330        340        350
LVKTQTSMDM AMLVNFAAKE RCEKEWAFLF KEAGFSDYKI YPKLDFTRSL 

IEVYP
Length:355
Mass (Da):39,863
Last modified:February 26, 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:i76E6CB586E427CA5
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
EF444544 mRNA Translation: ABR20103.1

Genome annotation databases

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ag:ABR20103

<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
EF444544 mRNA Translation: ABR20103.1

3D structure databases

SMRiB0EXJ8
ModBaseiSearch...

Genome annotation databases

KEGGiag:ABR20103

Enzyme and pathway databases

UniPathwayiUPA00365
BRENDAi2.1.1.94, 1211

Family and domain databases

Gene3Di1.10.10.10, 1 hit
InterProiView protein in InterPro
IPR016461, COMT-like
IPR001077, O_MeTrfase_dom
IPR012967, Plant_MeTrfase_dimerisation
IPR029063, SAM-dependent_MTases
IPR036388, WH-like_DNA-bd_sf
IPR036390, WH_DNA-bd_sf
PANTHERiPTHR11746, PTHR11746, 1 hit
PfamiView protein in Pfam
PF08100, Dimerisation, 1 hit
PF00891, Methyltransf_2, 1 hit
PIRSFiPIRSF005739, O-mtase, 1 hit
SUPFAMiSSF46785, SSF46785, 1 hit
SSF53335, SSF53335, 1 hit
PROSITEiView protein in PROSITE
PS51683, SAM_OMT_II, 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 nameiHTOMT_CATRO
<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: B0EXJ8
<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: July 27, 2011
Last sequence update: February 26, 2008
Last modified: February 23, 2022
This is version 41 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 programPlant 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. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families
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