ID C5MVT9_9INFA Unreviewed; 274 AA. AC C5MVT9; DT 28-JUL-2009, integrated into UniProtKB/TrEMBL. DT 28-JUL-2009, sequence version 1. DT 08-JUN-2016, entry version 31. DE RecName: Full=Neuraminidase {ECO:0000256|RuleBase:RU361252, ECO:0000256|SAAS:SAAS00062759}; DE EC=3.2.1.18 {ECO:0000256|RuleBase:RU361252, ECO:0000256|SAAS:SAAS00063188}; DE Flags: Fragment; GN Name=NA {ECO:0000256|RuleBase:RU361252, ECO:0000313|EMBL:ACS45192.1}; OS Influenza A virus (A/Dublin/04/2009(H1N1)). OC Viruses; ssRNA viruses; ssRNA negative-strand viruses; OC Orthomyxoviridae; Influenzavirus A. OX NCBI_TaxID=653735 {ECO:0000313|EMBL:ACS45192.1}; RN [1] {ECO:0000313|EMBL:ACS45192.1} RP NUCLEOTIDE SEQUENCE. RC STRAIN=A/Dublin/04/2009 {ECO:0000313|EMBL:ACS45192.1}; RA Carr M.J., Duffy M., Tuite G., Hall W.W.; RT "Human infection with novel swine-lineage H1N1 influenza virus in RT Ireland."; RL Submitted (JUN-2009) to the EMBL/GenBank/DDBJ databases. CC -!- FUNCTION: Catalyzes the removal of terminal sialic acid residues CC from viral and cellular glycoconjugates. CC {ECO:0000256|RuleBase:RU361252}. CC -!- FUNCTION: Catalyzes the removal of terminal sialic acid residues CC from viral and cellular glycoconjugates. Cleaves off the terminal CC sialic acids on the glycosylated HA during virus budding to CC facilitate virus release. Additionally helps virus spread through CC the circulation by further removing sialic acids from the cell CC surface. These cleavages prevent self-aggregation and ensure the CC efficient spread of the progeny virus from cell to cell. CC Otherwise, infection would be limited to one round of replication. CC Described as a receptor-destroying enzyme because it cleaves a CC terminal sialic acid from the cellular receptors. May facilitate CC viral invasion of the upper airways by cleaving the sialic acid CC moities on the mucin of the airway epithelial cells. CC {ECO:0000256|SAAS:SAAS00561304}. CC -!- CATALYTIC ACTIVITY: Hydrolysis of alpha-(2->3)-, alpha-(2->6)-, CC alpha-(2->8)- glycosidic linkages of terminal sialic acid residues CC in oligosaccharides, glycoproteins, glycolipids, colominic acid CC and synthetic substrates. {ECO:0000256|RuleBase:RU361252, CC ECO:0000256|SAAS:SAAS00062942}. CC -!- COFACTOR: CC Name=Ca(2+); Xref=ChEBI:CHEBI:29108; CC Evidence={ECO:0000256|RuleBase:RU361252}; CC Note=Binds 1 Ca(2+) ion per subunit. CC {ECO:0000256|RuleBase:RU361252}; CC -!- SUBUNIT: Homotetramer. {ECO:0000256|RuleBase:RU361252, CC ECO:0000256|SAAS:SAAS00063168}. CC -!- SUBCELLULAR LOCATION: Host apical cell membrane CC {ECO:0000256|SAAS:SAAS00561320}; Single-pass type II membrane CC protein {ECO:0000256|SAAS:SAAS00561320}. CC -!- SUBCELLULAR LOCATION: Virion {ECO:0000256|SAAS:SAAS00561056}. CC -!- SUBCELLULAR LOCATION: Virion membrane CC {ECO:0000256|SAAS:SAAS00561294}. CC -!- SUBCELLULAR LOCATION: Virion membrane CC {ECO:0000256|RuleBase:RU361252}. Host apical cell membrane CC {ECO:0000256|RuleBase:RU361252}; Single-pass type II membrane CC protein {ECO:0000256|RuleBase:RU361252}. CC -!- PTM: N-glycosylated. {ECO:0000256|RuleBase:RU361252}. CC -!- SIMILARITY: Belongs to the glycosyl hydrolase 34 family. CC {ECO:0000256|RuleBase:RU361252, ECO:0000256|SAAS:SAAS00561099}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; GQ281078; ACS45192.1; -; Viral_cRNA. DR GO; GO:0020002; C:host cell plasma membrane; IEA:UniProtKB-SubCell. DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW. DR GO; GO:0055036; C:virion membrane; IEA:UniProtKB-SubCell. DR GO; GO:0052794; F:exo-alpha-(2->3)-sialidase activity; IEA:UniProtKB-EC. DR GO; GO:0052795; F:exo-alpha-(2->6)-sialidase activity; IEA:UniProtKB-EC. DR GO; GO:0052796; F:exo-alpha-(2->8)-sialidase activity; IEA:UniProtKB-EC. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW. DR GO; GO:0005975; P:carbohydrate metabolic process; IEA:InterPro. DR Gene3D; 2.120.10.10; -; 1. DR InterPro; IPR001860; Glyco_hydro_34. DR InterPro; IPR011040; Sialidases. DR Pfam; PF00064; Neur; 1. DR SUPFAM; SSF50939; SSF50939; 1. PE 3: Inferred from homology; KW Calcium {ECO:0000256|RuleBase:RU361252, KW ECO:0000256|SAAS:SAAS00448743}; KW Disulfide bond {ECO:0000256|SAAS:SAAS00449120}; KW Glycoprotein {ECO:0000256|RuleBase:RU361252}; KW Glycosidase {ECO:0000256|RuleBase:RU361252, KW ECO:0000256|SAAS:SAAS00448849}; KW Host cell membrane {ECO:0000256|RuleBase:RU361252, KW ECO:0000256|SAAS:SAAS00448685}; KW Host membrane {ECO:0000256|RuleBase:RU361252, KW ECO:0000256|SAAS:SAAS00449348}; KW Hydrolase {ECO:0000256|RuleBase:RU361252, KW ECO:0000256|SAAS:SAAS00475017}; KW Membrane {ECO:0000256|SAAS:SAAS00474571}; KW Metal-binding {ECO:0000256|RuleBase:RU361252, KW ECO:0000256|SAAS:SAAS00448775}; KW Transmembrane {ECO:0000256|SAAS:SAAS00474655}; KW Transmembrane helix {ECO:0000256|SAAS:SAAS00475130}; KW Virion {ECO:0000256|RuleBase:RU361252, ECO:0000256|SAAS:SAAS00448515}. FT NON_TER 1 1 {ECO:0000313|EMBL:ACS45192.1}. FT NON_TER 274 274 {ECO:0000313|EMBL:ACS45192.1}. SQ SEQUENCE 274 AA; 30229 MW; AA32410CFA84501C CRC64; NSIRIGSKGD VFVIREPFIS CSPLECRTFF LTQGALLNDK HSNGTIKDRS PYRTLMSCPI GEVPSPYNSR FESVAWSASA CHDGINWLTI GISGPDNGAV AVLKYNGIIT DTIKSWRNNI LRTQESECAC VNGSCFTVMT DGPSDGQASY KIFRIEKGKI VKSVEMNAPN YHYEECSCYP DSSEITCVCR DNWHGSNRPW VSFNQNLEYQ IGYICSGIFG DNPRPNDKTG SCGPVSSNGA NGVKGFSFKY GNGVWIGRTK SISSRNGFEM IWDP //