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P30215

- HEMA_CVHOC

UniProt

P30215 - HEMA_CVHOC

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Protein

Hemagglutinin-esterase

Gene
HE, 2b
Organism
Human coronavirus OC43 (HCoV-OC43)
Status
Reviewed - Annotation score: 4 out of 5 - Protein inferred from homologyi

Functioni

Structural protein that makes short spikes at the surface of the virus. Contains receptor binding and receptor-destroying activities. Mediates de-O-acetylation of N-acetyl-9-O-acetylneuraminic acid, which is probably the receptor determinant recognized by the virus on the surface of erythrocytes and susceptible cells. This receptor-destroying activity is important for virus release as it probably helps preventing self-aggregation and ensures the efficient spread of the progeny virus from cell to cell. May serve as a secondary viral attachment protein for initiating infection, the spike protein being the major one. Seems to be a 'luxury' protein that is not absolutely necessary for virus infection in culture. However, its presence in the virus may alter its pathogenicity. May become a target for both the humoral and the cellular branches of the immune system By similarity.

Catalytic activityi

N-acetyl-O-acetylneuraminate + H2O = N-acetylneuraminate + acetate.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei40 – 401Nucleophile By similarity
Active sitei228 – 2281Charge relay system By similarity
Active sitei329 – 3291Charge relay system By similarity

GO - Molecular functioni

  1. sialate O-acetylesterase activity Source: UniProtKB-EC

GO - Biological processi

  1. fusion of virus membrane with host plasma membrane Source: InterPro
  2. viral life cycle Source: CACAO
Complete GO annotation...

Keywords - Molecular functioni

Hemagglutinin, Hydrolase

Names & Taxonomyi

Protein namesi
Recommended name:
Hemagglutinin-esterase (EC:3.1.1.53)
Short name:
HE protein
Alternative name(s):
E3 glycoprotein
Gene namesi
Name:HE
ORF Names:2b
OrganismiHuman coronavirus OC43 (HCoV-OC43)
Taxonomic identifieri31631 [NCBI]
Taxonomic lineageiVirusesssRNA positive-strand viruses, no DNA stageNidoviralesCoronaviridaeCoronavirinaeBetacoronavirus
Virus hostiHomo sapiens (Human) [TaxID: 9606]
ProteomesiUP000007552: Genome

Subcellular locationi

Virion membrane; Single-pass type I membrane protein Reviewed prediction. Host cell membrane; Single-pass type I membrane protein Reviewed prediction
Note: In infected cells becomes incorporated into the envelope of virions during virus assembly at the endoplasmic reticulum and cis Golgi. However, some may escape incorporation into virions and subsequently migrate to the cell surface By similarity.

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini19 – 392374Virion surface Reviewed predictionAdd
BLAST
Transmembranei393 – 41321Helical; Reviewed predictionAdd
BLAST
Topological domaini414 – 42411Intravirion Reviewed predictionAdd
BLAST

GO - Cellular componenti

  1. host cell plasma membrane Source: UniProtKB-SubCell
  2. integral component of membrane Source: UniProtKB-KW
  3. viral envelope Source: UniProtKB-KW
  4. virion membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Host cell membrane, Host membrane, Membrane, Viral envelope protein, Virion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Signal peptidei1 – 1818 By similarityAdd
BLAST
Chaini19 – 424406Hemagglutinin-esterasePRO_0000037144Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Disulfide bondi44 ↔ 65 By similarity
Glycosylationi54 – 541N-linked (GlcNAc...); by host Reviewed prediction
Glycosylationi89 – 891N-linked (GlcNAc...); by host Reviewed prediction
Disulfide bondi113 ↔ 162 By similarity
Glycosylationi114 – 1141N-linked (GlcNAc...); by host Reviewed prediction
Glycosylationi153 – 1531N-linked (GlcNAc...); by host Reviewed prediction
Disulfide bondi197 ↔ 276 By similarity
Disulfide bondi205 ↔ 249 By similarity
Glycosylationi236 – 2361N-linked (GlcNAc...); by host Reviewed prediction
Glycosylationi301 – 3011N-linked (GlcNAc...); by host Reviewed prediction
Disulfide bondi307 ↔ 312 By similarity
Glycosylationi316 – 3161N-linked (GlcNAc...); by host Reviewed prediction
Disulfide bondi347 ↔ 371 By similarity
Glycosylationi358 – 3581N-linked (GlcNAc...); by host Reviewed prediction

Post-translational modificationi

N-glycosylated in the RER By similarity.

Keywords - PTMi

Disulfide bond, Glycoprotein

Interactioni

Subunit structurei

Homodimer; disulfide-linked. Forms a complex with the M protein in the pre-Golgi. Associates then with S-M complex to form a ternary complex S-M-HE.

Structurei

3D structure databases

ProteinModelPortaliP30215.
SMRiP30215. Positions 19-376.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni7 – 127121Esterase domain first part By similarityAdd
BLAST
Regioni128 – 266139Receptor binding By similarityAdd
BLAST
Regioni267 – 379113Esterase domain second part By similarityAdd
BLAST

Sequence similaritiesi

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Family and domain databases

InterProiIPR008980. Capsid_hemagglutn.
IPR007142. Hemagglutn-estrase_core.
IPR003860. Hemagglutn-estrase_hemagglutn.
[Graphical view]
PfamiPF03996. Hema_esterase. 1 hit.
PF02710. Hema_HEFG. 1 hit.
[Graphical view]
SUPFAMiSSF49818. SSF49818. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P30215-1 [UniParc]FASTAAdd to Basket

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MFLLPRFILV SCIIGSLGFY NPPTNVVSHV NGDWFLFGDS RSDCNHIVNI    50
NPHNYSYMDL NPVLCDSGKI SSKAGNSIFR SFHFTDFYNY TGEGQQIIFY 100
EGVNFTPYHA FKCNRSGSND IWMQNKGLFY TQVYKNMAVY RSLTFVNVPY 150
VYNGSAQSTA LCKSGSLVLN NPAYIAPQAN SGDYYYKVEA DFYLSGCDEY 200
IVPLCIFNGK FLSNTKYYDD SQYYFNKDTG VIYGLNSTET ITTGFDLNCY 250
YLVLPSGNYL AISNELLLTV PTKAICLNKR KDFTPVQVVD SRWNNARQSD 300
NMTAVACQPP YCYFRNSTTN YVGVYDINHG DAGFTSILSG LLYNSPCFSQ 350
QGVFRYDNVS SVWPLYPYGR CPTAADINNP DLPICVYDPL PVILLGILLG 400
VAVIIIVVLL LYFMVDNGTR LHDA 424
Length:424
Mass (Da):47,724
Last modified:April 1, 1993 - v1
Checksum:iEA43A1CCDF8598D7
GO

Natural variant

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti158 – 1581S → A in strain: Isolate ATCC VR-759 and Isolate clinical OC43-Paris.
Natural varianti379 – 3791N → I in strain: Isolate ATCC VR-759 and Isolate clinical OC43-Paris.
Natural varianti403 – 4042VI → IV in strain: Isolate ATCC VR-759 and Isolate clinical OC43-Paris.
Natural varianti418 – 4181G → V in strain: Isolate ATCC VR-759 and Isolate clinical OC43-Paris.

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
M76373 Genomic RNA. Translation: AAA45460.1.
AY391777 Genomic RNA. Translation: AAR01014.1.
AY585228 Genomic RNA. Translation: AAT84353.1.
AY585229 Genomic RNA. Translation: AAT84361.1.
PIRiA39450. HMIHCC.
RefSeqiNP_937949.1. NC_005147.1.

Genome annotation databases

GeneIDi2648209.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
M76373 Genomic RNA. Translation: AAA45460.1 .
AY391777 Genomic RNA. Translation: AAR01014.1 .
AY585228 Genomic RNA. Translation: AAT84353.1 .
AY585229 Genomic RNA. Translation: AAT84361.1 .
PIRi A39450. HMIHCC.
RefSeqi NP_937949.1. NC_005147.1.

3D structure databases

ProteinModelPortali P30215.
SMRi P30215. Positions 19-376.
ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 2648209.

Family and domain databases

InterProi IPR008980. Capsid_hemagglutn.
IPR007142. Hemagglutn-estrase_core.
IPR003860. Hemagglutn-estrase_hemagglutn.
[Graphical view ]
Pfami PF03996. Hema_esterase. 1 hit.
PF02710. Hema_HEFG. 1 hit.
[Graphical view ]
SUPFAMi SSF49818. SSF49818. 1 hit.
ProtoNeti Search...

Publicationsi

  1. "The hemagglutinin/esterase gene of human coronavirus strain OC43: phylogenetic relationships to bovine and murine coronaviruses and influenza C virus."
    Zhang X.M., Kousoulas K.G., Storz J.
    Virology 186:318-323(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].
  2. "Human respiratory coronavirus OC43: genetic stability and neuroinvasion."
    St Jean J.R., Jacomy H., Desforges M., Vabret A., Freymuth F., Talbot P.J.
    J. Virol. 78:8824-8834(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].
    Strain: Isolate ATCC VR-759 and Isolate clinical OC43-Paris.
  3. "Complete genomic sequence of human coronavirus OC43: molecular clock analysis suggests a relatively recent zoonotic coronavirus transmission event."
    Vijgen L., Keyaerts E., Moes E., Thoelen I., Wollants E., Lemey P., Vandamme A.M., Van Ranst M.
    J. Virol. 79:1595-1604(2005) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].
    Strain: Isolate ATCC VR-759.

Entry informationi

Entry nameiHEMA_CVHOC
AccessioniPrimary (citable) accession number: P30215
Secondary accession number(s): Q6TNG0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: April 1, 1993
Last modified: April 16, 2014
This is version 89 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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