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Entry version 117 (12 Aug 2020)
Sequence version 1 (01 Jul 1997)
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Protein

Levanbiose-producing levanase

Gene

levB

Organism
Bacillus subtilis (strain 168)
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 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

Catalyzes the degradation of levan mainly into levanbiose (difructose). Is not active on sucrose.2 Publications

<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

  • Hydrolysis of (2->6)-beta-D-fructofuranan, to remove successive disaccharide residues as levanbiose, i.e. 6-(beta-D-fructofuranosyl)-D-fructose, from the end of the chain. EC:3.2.1.64

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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 sitei58By similarity1
<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 sitei230SubstrateBy similarity1
Binding sitei318SubstrateBy similarity1

<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 functionGlycosidase, Hydrolase
Biological processCarbohydrate metabolism

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
BSUB:BSU34460-MONOMER

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
GH32, Glycoside Hydrolase Family 32

<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:
Levanbiose-producing levanase (EC:3.2.1.64)
Alternative name(s):
2,6-beta-fructan 6-levanbiohydrolase
Endo-levanase
<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:levB
Synonyms:yveB
Ordered Locus Names:BSU34460
<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>OrganismiBacillus subtilis (strain 168)
<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 identifieri224308 [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 lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000001570 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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: Chromosome

<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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini1 – 5CytoplasmicSequence analysis5
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei6 – 26HelicalSequence analysisAdd BLAST21
Topological domaini27 – 516ExtracellularSequence analysisAdd BLAST490

GO - Cellular componenti

Keywords - Cellular componenti

Cell membrane, Membrane

<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_00003442541 – 516Levanbiose-producing levanaseAdd BLAST516

Proteomic databases

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

More...
PaxDbi
O07003

PRoteomics IDEntifications database

More...
PRIDEi
O07003

<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 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

Induced by sucrose.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

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
224308.BSU34460

<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

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SMRi
O07003

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>Regioni55 – 58Substrate bindingBy similarity4
Regioni116 – 117Substrate bindingBy similarity2
Regioni181 – 182Substrate bindingBy similarity2

<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 glycosyl hydrolase 32 family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG1621, Bacteria

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
O07003

KEGG Orthology (KO)

More...
KOi
K01212

Identification of Orthologs from Complete Genome Data

More...
OMAi
TYAYWTG

Database for complete collections of gene phylogenies

More...
PhylomeDBi
O07003

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.115.10.20, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013320, ConA-like_dom_sf
IPR001362, Glyco_hydro_32
IPR013189, Glyco_hydro_32_C
IPR013148, Glyco_hydro_32_N
IPR023296, Glyco_hydro_beta-prop_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08244, Glyco_hydro_32C, 1 hit
PF00251, Glyco_hydro_32N, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00640, Glyco_32, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF49899, SSF49899, 1 hit
SSF75005, SSF75005, 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.

O07003-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNYIKAGKWL TVFLTFLGIL LFIDLFPKEE HDQKTKSKQK PDYRAAYHFT
60 70 80 90 100
TPDKWKNDPQ KPIYFDGKYH YFYLYNRDYP KGNGTEWRHA VSEDLVHWTD
110 120 130 140 150
EGVAIPKYTN PDGDIWTGSV VVDKENTAGF GKNALVAIVT QPSAKDKKQE
160 170 180 190 200
QYLWYSTDKG KSFKFYSGNP VMPNPGTDDF RDPKVIWDDQ DNKWVMVMAE
210 220 230 240 250
GSKIGFYESD NLKDWHYTSG FFPEQAGMVE CPDLYMMRAS DGTNKWVLGA
260 270 280 290 300
SANGKPWGKP NTYAYWTGSF DGKEFKADQT EAQWLDYGFD WYGGVTFEDS
310 320 330 340 350
KSTDPLEKRY ALAWMNNWDY ANNTPTMKNG FNGTDSVIRE LRLKEQDGTY
360 370 380 390 400
SLVSQPIEAL EQLTVSTDEI EDQDVNGSKT LSITGDTYQL DTDLSWSELK
410 420 430 440 450
NAGVRLRESE DQKRHIDVGI FAEGGYAYVN RAATNQPDKS NTYVESKAPY
460 470 480 490 500
DVNKRKVHLK ILVDKTTIEV FVGDGKTVFS NEVFPKPEDK GITLYSDGGT
510
ASFKNITVKH FDSIHE
Length:516
Mass (Da):58,979
Last modified:July 1, 1997 - 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:iEAEC526706C40762
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
Z94043 Genomic DNA Translation: CAB08014.1
AL009126 Genomic DNA Translation: CAB15451.1

Protein sequence database of the Protein Information Resource

More...
PIRi
E70035

NCBI Reference Sequences

More...
RefSeqi
NP_391326.1, NC_000964.3
WP_003243729.1, NZ_JNCM01000033.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
CAB15451; CAB15451; BSU34460

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
938616

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bsu:BSU34460

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|224308.179.peg.3733

<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
Z94043 Genomic DNA Translation: CAB08014.1
AL009126 Genomic DNA Translation: CAB15451.1
PIRiE70035
RefSeqiNP_391326.1, NC_000964.3
WP_003243729.1, NZ_JNCM01000033.1

3D structure databases

SMRiO07003
ModBaseiSearch...

Protein-protein interaction databases

STRINGi224308.BSU34460

Protein family/group databases

CAZyiGH32, Glycoside Hydrolase Family 32

Proteomic databases

PaxDbiO07003
PRIDEiO07003

Genome annotation databases

EnsemblBacteriaiCAB15451; CAB15451; BSU34460
GeneIDi938616
KEGGibsu:BSU34460
PATRICifig|224308.179.peg.3733

Phylogenomic databases

eggNOGiCOG1621, Bacteria
InParanoidiO07003
KOiK01212
OMAiTYAYWTG
PhylomeDBiO07003

Enzyme and pathway databases

BioCyciBSUB:BSU34460-MONOMER

Family and domain databases

Gene3Di2.115.10.20, 1 hit
InterProiView protein in InterPro
IPR013320, ConA-like_dom_sf
IPR001362, Glyco_hydro_32
IPR013189, Glyco_hydro_32_C
IPR013148, Glyco_hydro_32_N
IPR023296, Glyco_hydro_beta-prop_sf
PfamiView protein in Pfam
PF08244, Glyco_hydro_32C, 1 hit
PF00251, Glyco_hydro_32N, 1 hit
SMARTiView protein in SMART
SM00640, Glyco_32, 1 hit
SUPFAMiSSF49899, SSF49899, 1 hit
SSF75005, SSF75005, 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 nameiLEVB_BACSU
<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: O07003
Secondary accession number(s): Q795H7
<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 22, 2008
Last sequence update: July 1, 1997
Last modified: August 12, 2020
This is version 117 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 programProkaryotic 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

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
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