ID A0A023IVI1_9INFA Unreviewed; 565 AA. AC A0A023IVI1; DT 09-JUL-2014, integrated into UniProtKB/TrEMBL. DT 09-JUL-2014, sequence version 1. DT 18-JAN-2017, entry version 18. DE RecName: Full=Hemagglutinin {ECO:0000256|SAAS:SAAS00070811}; GN Name=HA {ECO:0000313|EMBL:AHA98414.1}; OS Influenza A virus (A/ruddy turnstone/Ilha de Canelas/A08/2008(H11N9)). OC Viruses; ssRNA viruses; ssRNA negative-strand viruses; OC Orthomyxoviridae; Influenzavirus A. OX NCBI_TaxID=1419066 {ECO:0000313|EMBL:AHA98414.1, ECO:0000313|Proteomes:UP000145460}; RN [1] {ECO:0000313|EMBL:AHA98414.1, ECO:0000313|Proteomes:UP000145460} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=A/ruddy turnstone/Ilha de Canelas/A08/2008 RC {ECO:0000313|EMBL:AHA98414.1}; RX PubMed=25329399; RA de Araujo J., de Azevedo Junior S.M., Gaidet N., Hurtado R.F., RA Walker D., Thomazelli L.M., Ometto T., Seixas M.M., Rodrigues R., RA Galindo D.B., da Silva A.C., Rodrigues A.M., Bomfim L.L., Mota M.A., RA Larrazabal M.E., Branco J.O., Serafini P., Neto I.S., Franks J., RA Webby R.J., Webster R.G., Durigon E.L.; RT "Avian Influenza Virus (H11N9) in Migratory Shorebirds Wintering in RT the Amazon Region, Brazil."; RL PLoS ONE 9:E110141-E110141(2014). CC -!- FUNCTION: Binds to sialic acid-containing receptors on the cell CC surface, bringing about the attachment of the virus particle to CC the cell. This attachment induces virion internalization of about CC two third of the virus particles through clathrin-dependent CC endocytosis and about one third through a clathrin- and caveolin- CC independent pathway. Plays a major role in the determination of CC host range restriction and virulence. Class I viral fusion CC protein. Responsible for penetration of the virus into the cell CC cytoplasm by mediating the fusion of the membrane of the CC endocytosed virus particle with the endosomal membrane. Low pH in CC endosomes induces an irreversible conformational change in HA2, CC releasing the fusion hydrophobic peptide. Several trimers are CC required to form a competent fusion pore. CC {ECO:0000256|RuleBase:RU003324, ECO:0000256|SAAS:SAAS00046902}. CC -!- SUBUNIT: Homotrimer of disulfide-linked HA1-HA2. CC {ECO:0000256|RuleBase:RU003324, ECO:0000256|SAAS:SAAS00070616}. CC -!- SUBCELLULAR LOCATION: Host apical cell membrane CC {ECO:0000256|SAAS:SAAS00554387}; Single-pass type I membrane CC protein {ECO:0000256|SAAS:SAAS00554387}. CC -!- SUBCELLULAR LOCATION: Virion membrane CC {ECO:0000256|SAAS:SAAS00562983}; Single-pass type I membrane CC protein {ECO:0000256|SAAS:SAAS00562983}. CC -!- SIMILARITY: Belongs to the influenza viruses hemagglutinin family. CC {ECO:0000256|RuleBase:RU003324, ECO:0000256|SAAS:SAAS00554249}. 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; KF824501; AHA98414.1; -; Viral_cRNA. DR Proteomes; UP000145460; Segment 4 hemagglutinin (ha) gene. 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:0019031; C:viral envelope; IEA:UniProtKB-KW. DR GO; GO:0055036; C:virion membrane; IEA:UniProtKB-SubCell. DR GO; GO:0075512; P:clathrin-dependent endocytosis of virus by host cell; IEA:UniProtKB-KW. DR GO; GO:0039654; P:fusion of virus membrane with host endosome membrane; IEA:UniProtKB-KW. DR GO; GO:0019064; P:fusion of virus membrane with host plasma membrane; IEA:InterPro. DR GO; GO:0019062; P:virion attachment to host cell; IEA:UniProtKB-KW. DR Gene3D; 2.10.77.10; -; 1. DR Gene3D; 3.90.20.10; -; 1. DR Gene3D; 3.90.209.20; -; 1. DR InterPro; IPR008980; Capsid_hemagglutn. DR InterPro; IPR013828; Hemagglutn_HA1_a/b_dom. DR InterPro; IPR013827; Hemagglutn_HA1_b-rbn_dom. DR InterPro; IPR000149; Hemagglutn_influenz_A. DR InterPro; IPR001364; Hemagglutn_influenz_A/B. DR InterPro; IPR013829; Hemagglutn_stalk. DR Pfam; PF00509; Hemagglutinin; 1. DR PRINTS; PR00330; HEMAGGLUTN1. DR PRINTS; PR00329; HEMAGGLUTN12. DR SUPFAM; SSF49818; SSF49818; 1. PE 3: Inferred from homology; KW Clathrin- and caveolin-independent endocytosis of virus by host KW {ECO:0000256|SAAS:SAAS00046919}; KW Clathrin-mediated endocytosis of virus by host KW {ECO:0000256|SAAS:SAAS00046886}; Coiled coil {ECO:0000256|SAM:Coils}; KW Complete proteome {ECO:0000313|Proteomes:UP000145460}; KW Disulfide bond {ECO:0000256|SAAS:SAAS00452091}; KW Fusion of virus membrane with host endosomal membrane KW {ECO:0000256|SAAS:SAAS00070798}; KW Fusion of virus membrane with host membrane KW {ECO:0000256|SAAS:SAAS00070828}; KW Hemagglutinin {ECO:0000256|RuleBase:RU003324, KW ECO:0000256|SAAS:SAAS00453741}; KW Host cell membrane {ECO:0000256|SAAS:SAAS00452920}; KW Host membrane {ECO:0000256|SAAS:SAAS00452739}; KW Host-virus interaction {ECO:0000256|SAAS:SAAS00070855}; KW Membrane {ECO:0000256|SAAS:SAAS00276163, ECO:0000256|SAM:Phobius}; KW Transmembrane {ECO:0000256|SAAS:SAAS00452243, KW ECO:0000256|SAM:Phobius}; KW Transmembrane helix {ECO:0000256|SAAS:SAAS00453372, KW ECO:0000256|SAM:Phobius}; KW Viral attachment to host cell {ECO:0000256|SAAS:SAAS00070808}; KW Viral envelope protein {ECO:0000256|RuleBase:RU003324, KW ECO:0000256|SAAS:SAAS00454107}; KW Viral penetration into host cytoplasm {ECO:0000256|SAAS:SAAS00070831}; KW Virion {ECO:0000256|SAAS:SAAS00070858}; KW Virus endocytosis by host {ECO:0000256|SAAS:SAAS00046951}; KW Virus entry into host cell {ECO:0000256|SAAS:SAAS00070771}. FT TRANSMEM 530 553 Helical. {ECO:0000256|SAM:Phobius}. FT COILED 398 425 {ECO:0000256|SAM:Coils}. SQ SEQUENCE 565 AA; 62895 MW; 2401B714AD6B0717 CRC64; MKKIMLLAAI IICIQADEIC IGYLSNNSTE KVDTIIESNV TVTSSVELVE NEHTGSFCSI NGKAPISLGD CSFAGWILGN PRCDDLIGKT SWSYIVEKPN PTNGICYPGT LENEEELRLK FSGVLEFSKF EAFTSNGWGA VNSGAGVTAA CKYGSSSSFF RHMVWLIHQS GTYPVIQRTF NNTKGRDVLM VWGVHHPASL KEHQDLYKKD SSYVAVGSES YNRRFTPEIS TRPRVNGQAG RMTFYWTIVK PGEAITFESN GAFLAPRYAF ELVSLGNGKL FRSDLSIGSC STKCQSEIGG INTNRSFHNV HRNTIGDCPK YVNVKSLKLA TGLRNVPTIA TRGLFGAIAG FIEGGWPGLI NGWYGFQHRN EEGTGIAADK ESTQKAIDQI TSKVNNIVDR MNTNFESVQH EFSEIEERIN QLSQHVDDSI IDIWSYNAQL LVLLENEKTL DLHDSNVRNL HEKVRRMLQD NAKDEGNGCF TFYHKCDNEC IEKVRNGTYD HKEFEEESKL NRQEIEGVKL DSNGNVYKIL SIYSCIASSL VLAAIIMGFI LWACSNGSCR CTICI //