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Entry version 108 (08 May 2019)
Sequence version 2 (16 Jun 2009)
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Protein

Beta-xylosidase

Gene

xynB

Organism
Bacillus subtilis (strain 168)
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 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

<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

  • Hydrolysis of (1->4)-beta-D-xylans, to remove successive D-xylose residues from the non-reducing termini.1 Publication EC:3.2.1.37

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei14Proton acceptorBy similarity1
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei127Important for catalytic activity, responsible for pKa modulation of the active site Glu and correct orientation of both the proton donor and substrateBy similarity1
Active sitei186Proton donorBy 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, Polysaccharide degradation, Xylan degradation

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
BSUB:BSU17580-MONOMER

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
GH43 Glycoside Hydrolase Family 43

<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:
Beta-xylosidase (EC:3.2.1.37)
Alternative name(s):
1,4-beta-D-xylan xylohydrolase
Xylan 1,4-beta-xylosidase
<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:xynB
Ordered Locus Names:BSU17580
<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>OrganismiBacillus subtilis (strain 168)
<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 identifieri224308 [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 lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus
<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
  • UP000001570 <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: 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

  • Cell membrane 1 Publication; Peripheral membrane protein 1 Publication

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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003605221 – 533Beta-xylosidaseAdd BLAST533

Proteomic databases

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

More...
PaxDbi
P94489

PRoteomics IDEntifications database

More...
PRIDEi
P94489

<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

Up-regulated by xylose. Subject to carbon catabolite repression (CCR).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_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

Homodimer.

1 Publication

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
224308.BSU17580

<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

Secondary structure

1533
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

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SMRi
P94489

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P94489

<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

<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 43 family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105DSG Bacteria
COG3507 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000112982

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P94489

KEGG Orthology (KO)

More...
KOi
K01198

Identification of Orthologs from Complete Genome Data

More...
OMAi
LVNYYNT

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P94489

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
IPR041542 GH43_C2
IPR006710 Glyco_hydro_43
IPR023296 Glyco_hydro_beta-prop_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF17851 GH43_C2, 1 hit
PF04616 Glyco_hydro_43, 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_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.

P94489-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKITNPVLKG FNPDPSICRA GEDYYIAVST FEWFPGVQIH HSKDLVNWHL
60 70 80 90 100
VAHPLQRVSQ LDMKGNPNSG GVWAPCLSYS DGKFWLIYTD VKVVDGAWKD
110 120 130 140 150
CHNYLVTCET INGDWSEPIK LNSSGFDASL FHDTDGKKYL LNMLWDHRID
160 170 180 190 200
RHSFGGIVIQ EYSDKEQKLI GKPKVIFEGT DRKLTEAPHL YHIGNYYYLL
210 220 230 240 250
TAEGGTRYEH AATIARSANI EGPYEVHPDN PILTSWHDPG NPLQKCGHAS
260 270 280 290 300
IVQTHTDEWY LAHLTGRPIH PDDDSIFQQR GYCPLGRETA IQKLYWKDEW
310 320 330 340 350
PYVVGGKEGS LEVDAPSIPE TIFEATYPEV DEFEDSTLNI NFQTLRIPFT
360 370 380 390 400
NELGSLTQAP NHLRLFGHES LTSTFTQAFV ARRWQSLHFE AETAVEFYPE
410 420 430 440 450
NFQQAAGLVN YYNTENWTAL QVTHDEELGR ILELTICDNF SFSQPLNNKI
460 470 480 490 500
VIPREVKYVY LRVNIEKDKY YYFYSFNKED WHKIDIALES KKLSDDYIRG
510 520 530
GGFFTGAFVG MQCQDTSGNH IPADFRYFRY KEK
Length:533
Mass (Da):61,366
Last modified:June 16, 2009 - v2
<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:i087286AACE705F1D
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 conflicti517S → G in AAB41091 (Ref. 1) Curated1

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
U66480 Genomic DNA Translation: AAB41091.1
AL009126 Genomic DNA Translation: CAB13642.2

Protein sequence database of the Protein Information Resource

More...
PIRi
G69735

NCBI Reference Sequences

More...
RefSeqi
NP_389640.2, NC_000964.3
WP_003245202.1, NZ_JNCM01000035.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
CAB13642; CAB13642; BSU17580

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
939472

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bsu:BSU17580

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|224308.179.peg.1908

<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
U66480 Genomic DNA Translation: AAB41091.1
AL009126 Genomic DNA Translation: CAB13642.2
PIRiG69735
RefSeqiNP_389640.2, NC_000964.3
WP_003245202.1, NZ_JNCM01000035.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1YIFX-ray1.80A/B/C/D1-533[»]
SMRiP94489
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

STRINGi224308.BSU17580

Protein family/group databases

CAZyiGH43 Glycoside Hydrolase Family 43

Proteomic databases

PaxDbiP94489
PRIDEiP94489

Protocols and materials databases

The DNASU plasmid repository

More...
DNASUi
939472

Genome annotation databases

EnsemblBacteriaiCAB13642; CAB13642; BSU17580
GeneIDi939472
KEGGibsu:BSU17580
PATRICifig|224308.179.peg.1908

Phylogenomic databases

eggNOGiENOG4105DSG Bacteria
COG3507 LUCA
HOGENOMiHOG000112982
InParanoidiP94489
KOiK01198
OMAiLVNYYNT
PhylomeDBiP94489

Enzyme and pathway databases

BioCyciBSUB:BSU17580-MONOMER

Miscellaneous databases

EvolutionaryTraceiP94489

Family and domain databases

Gene3Di2.115.10.20, 1 hit
InterProiView protein in InterPro
IPR013320 ConA-like_dom_sf
IPR041542 GH43_C2
IPR006710 Glyco_hydro_43
IPR023296 Glyco_hydro_beta-prop_sf
PfamiView protein in Pfam
PF17851 GH43_C2, 1 hit
PF04616 Glyco_hydro_43, 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 nameiXYNB_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: P94489
Secondary accession number(s): Q796H4
<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: January 20, 2009
Last sequence update: June 16, 2009
Last modified: May 8, 2019
This is version 108 of the entry and version 2 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

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  4. Bacillus subtilis
    Bacillus subtilis (strain 168): entries, gene names and cross-references to SubtiList
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