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Protein

Sialidase

Gene

nedA

Organism
Micromonospora viridifaciens
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

To release sialic acids for use as carbon and energy sources for this non-pathogenic bacterium while in pathogenic microorganisms, sialidases have been suggested to be pathogenic factors.

<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 alpha-(2->3)-, alpha-(2->6)-, alpha-(2->8)- glycosidic linkages of terminal sialic acid residues in oligosaccharides, glycoproteins, glycolipids, colominic acid and synthetic substrates. EC:3.2.1.18

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ 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 sitei68SubstrateBy similarity1
<p>This subsection of the ‘Function’ 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 sitei92Proton acceptorBy similarity1
Active sitei260NucleophileSequence analysis1
Binding sitei276SubstrateBy similarity1
Active sitei370Nucleophile1

<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

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
3.2.1.18 7474

SABIO-RK: Biochemical Reaction Kinetics Database

More...
SABIO-RKi
Q02834

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
CBM32 Carbohydrate-Binding Module Family 32
GH33 Glycoside Hydrolase Family 33

<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:
Sialidase (EC:3.2.1.18)
Alternative name(s):
Neuraminidase
<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:nedA
<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>OrganismiMicromonospora viridifaciens
<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 identifieri1881 [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 lineageiBacteriaActinobacteriaMicromonosporalesMicromonosporaceaeMicromonospora

<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

GO - Cellular componenti

Keywords - Cellular componenti

Secreted

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Chemistry databases

Drug and drug target database

More...
DrugBanki
DB04272 Citric Acid
DB04465 Lactose
DB04265 N-acetyl-beta-neuraminic acid

<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 denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 371 PublicationAdd BLAST37
<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_000001203238 – 647SialidaseAdd BLAST610

<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

By N-acetylneuraminic acid, colominic acid, and sialic acid.

<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

1647
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

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ProteinModelPortali
Q02834

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

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SMRi
Q02834

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

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MobiDBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
Q02834

<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 ‘Family and Domains’ section indicates the positions and types of repeated sequence motifs or repeated domains within the protein.<p><a href='/help/repeat' target='_top'>More...</a></p>Repeati102 – 113BNR 1Add BLAST12
Repeati175 – 186BNR 2Add BLAST12
Repeati239 – 250BNR 3Add BLAST12
Repeati287 – 298BNR 4Add BLAST12
Repeati348 – 359BNR 5Add BLAST12
<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>Domaini496 – 646F5/8 type CPROSITE-ProRule annotationAdd BLAST151

<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 33 family.Curated

Keywords - Domaini

Repeat, Signal

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00057 FA58C, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.120.260, 1 hit
2.60.40.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR018905 A-galactase_NEW3
IPR000421 FA58C
IPR008979 Galactose-bd-like_sf
IPR013783 Ig-like_fold
IPR014756 Ig_E-set
IPR011040 Sialidase
IPR026856 Sialidase_fam
IPR036278 Sialidase_sf
IPR006311 TAT_signal

The PANTHER Classification System

More...
PANTHERi
PTHR10628 PTHR10628, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF13088 BNR_2, 1 hit
PF00754 F5_F8_type_C, 1 hit
PF10633 NPCBM_assoc, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00231 FA58C, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF49785 SSF49785, 1 hit
SSF50939 SSF50939, 1 hit
SSF81296 SSF81296, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50022 FA58C_3, 1 hit
PS51318 TAT, 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>.<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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

Q02834-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTANPYLRRL PRRRAVSFLL APALAAATVA GASPAQAIAG APVPPGGEPL
60 70 80 90 100
YTEQDLAVNG REGFPNYRIP ALTVTPDGDL LASYDGRPTG IDAPGPNSIL
110 120 130 140 150
QRRSTDGGRT WGEQQVVSAG QTTAPIKGFS DPSYLVDRET GTIFNFHVYS
160 170 180 190 200
QRQGFAGSRP GTDPADPNVL HANVATSTDG GLTWSHRTIT ADITPDPGWR
210 220 230 240 250
SRFAASGEGI QLRYGPHAGR LIQQYTIINA AGAFQAVSVY SDDHGRTWRA
260 270 280 290 300
GEAVGVGMDE NKTVELSDGR VLLNSRDSAR SGYRKVAVST DGGHSYGPVT
310 320 330 340 350
IDRDLPDPTN NASIIRAFPD APAGSARAKV LLFSNAASQT SRSQGTIRMS
360 370 380 390 400
CDDGQTWPVS KVFQPGSMSY STLTALPDGT YGLLYEPGTG IRYANFNLAW
410 420 430 440 450
LGGICAPFTI PDVALEPGQQ VTVPVAVTNQ SGIAVPKPSL QLDASPDWQV
460 470 480 490 500
QGSVEPLMPG RQAKGQVTIT VPAGTTPGRY RVGATLRTSA GNASTTFTVT
510 520 530 540 550
VGLLDQARMS IADVDSEETA REDGRASNVI DGNPSTFWHT EWSRADAPGY
560 570 580 590 600
PHRISLDLGG THTISGLQYT RRQNSANEQV ADYEIYTSLN GTTWDGPVAS
610 620 630 640
GRFTTSLAPQ RAVFPARDAR YIRLVALSEQ TGHKYAAVAE LEVEGQR
Length:647
Mass (Da):68,830
Last modified:October 1, 1994 - 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:iDCC1FE5BC935B8AD
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
D01045 Genomic DNA Translation: BAA00852.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A45244

<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
D01045 Genomic DNA Translation: BAA00852.1
PIRiA45244

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
1EURX-ray1.82A43-407[»]
1EUSX-ray2.00A43-407[»]
1EUTX-ray2.50A43-647[»]
1EUUX-ray2.50A43-647[»]
1W8NX-ray2.10A47-647[»]
1W8OX-ray1.70A47-647[»]
1WCQX-ray2.10A/B/C47-647[»]
2BERX-ray1.80A47-647[»]
2BZDX-ray2.00A/B/C47-647[»]
4J9TX-ray1.40A47-407[»]
ProteinModelPortaliQ02834
SMRiQ02834
ModBaseiSearch...
MobiDBiSearch...

Chemistry databases

DrugBankiDB04272 Citric Acid
DB04465 Lactose
DB04265 N-acetyl-beta-neuraminic acid

Protein family/group databases

CAZyiCBM32 Carbohydrate-Binding Module Family 32
GH33 Glycoside Hydrolase Family 33

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Enzyme and pathway databases

BRENDAi3.2.1.18 7474
SABIO-RKiQ02834

Miscellaneous databases

EvolutionaryTraceiQ02834

Family and domain databases

CDDicd00057 FA58C, 1 hit
Gene3Di2.60.120.260, 1 hit
2.60.40.10, 1 hit
InterProiView protein in InterPro
IPR018905 A-galactase_NEW3
IPR000421 FA58C
IPR008979 Galactose-bd-like_sf
IPR013783 Ig-like_fold
IPR014756 Ig_E-set
IPR011040 Sialidase
IPR026856 Sialidase_fam
IPR036278 Sialidase_sf
IPR006311 TAT_signal
PANTHERiPTHR10628 PTHR10628, 1 hit
PfamiView protein in Pfam
PF13088 BNR_2, 1 hit
PF00754 F5_F8_type_C, 1 hit
PF10633 NPCBM_assoc, 1 hit
SMARTiView protein in SMART
SM00231 FA58C, 1 hit
SUPFAMiSSF49785 SSF49785, 1 hit
SSF50939 SSF50939, 1 hit
SSF81296 SSF81296, 1 hit
PROSITEiView protein in PROSITE
PS50022 FA58C_3, 1 hit
PS51318 TAT, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
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 nameiNANH_MICVI
<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: Q02834
<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: October 1, 1994
Last sequence update: October 1, 1994
Last modified: December 5, 2018
This is version 125 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

3D-structure, Direct protein sequencing

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
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