Lipid Modification Database
Tag Content
LipidDB ID
LipidDB-489543-00815
Entry Name
UniProt Accession
Theoretical PI
8.71
Molecular Weight
36230.1
Genbank Protein ID
Genbank Nucleotide ID
Protein Name
Truncated S protein
Protein Synonyms/Alias
L glycoprotein; L-HBsAg; LHB; Large S protein; Large surface protein; Major surface antigen; St;
Gene Name
S
Gene Synonyms/Alias
Created Date
21-JUL-1986
 Lipid Modification Sites 
 Position   Sequence Form   Peptide   References   Modification Type 
2
Canonical
******MGQHPAKSM
[1]
N-Myristoylation
Organism
Duck hepatitis B virus (strain United States/DHBV-16) (DHBV)
NCBI Taxa ID
489543
Reference
[1] Macrae DR, Bruss V, Ganem D. Myristylation of a duck hepatitis B virusenvelope protein is essential for infectivity but not for virus assembly.Virology. 1991 Mar;181(1):359-63.[PMID:1994583]
Functional Description
The large envelope protein exists in two topological conformations, one which is termed 'external' or Le-HBsAg and the other 'internal' or Li-HBsAg. In its external conformation the protein attaches the virus to cell receptors and thereby initiating infection. This interaction determines the species specificity and liver tropism. The large envelope protein probably also assumes fusion between virion and host membranes. In its internal conformation the protein plays a role in virion morphogenesis and mediates the contact with the nucleocapsid like a matrix protein (By similarity).
Sequence Annotation
Topological domain: 2 236 Cytoplasmic; in internal conformation.
Topological domain: 2 163 Extracellular; in external conformation.
Transmembrane: 164 184 Helical; Name=TM1; Note=In externalconformation.
Topological domain: 185 236 Cytoplasmic; in external conformation.
Transmembrane: 237 257 Helical; Name=TM2.
Topological domain: 258 282 Extracellular.
Transmembrane: 283 303 Helical; Name=TM3.
Topological domain: 304 328 Cytoplasmic.
Region: 2 161 Pre-S.
Functional site: ?238 ?239 Cleavage; by host.
Modified residue: 118 118 Phosphoserine; by host.
Protein Length
328 AA.
Protein Sequence
(Canonical)
MGQHPAKSMD VRRIEGGEIL LNQLAGRMIP KGTLTWSGKF PTLDHVLDHV QTMEEINTLQ  60
NQGAWPAGAG RRVGLSNPTP QEIPQPQWTP EEDQKAREAF RRYQEERPPE TTTIPPSSPP  120
QWKLQPGDDP LLGNQSLLET HPLYQSEPAV PVIKTPPLKK KMSGTFGGIL AGLIGLLVSF  180
FLLIKILEIL RRLDWWWISL SSPKGKMQCA FQDTGAQISP HYVGSCPWGC PGFLWTYLRL  240
FIIFLLILLV AAGLLYLTDN GSTILGKLQW ASVSALFSSI SSLLPSDPKS LVALTFGLSL  300
IWMTSSSATQ TLVTLTQLAT LSALFYKS                                     328
FASTA
(Canonical)
>LipidDB-489543-00815|P03145
MGQHPAKSMDVRRIEGGEILLNQLAGRMIPKGTLTWSGKFPTLDHVLDHVQTMEEINTLQ
NQGAWPAGAGRRVGLSNPTPQEIPQPQWTPEEDQKAREAFRRYQEERPPETTTIPPSSPP
QWKLQPGDDPLLGNQSLLETHPLYQSEPAVPVIKTPPLKKKMSGTFGGILAGLIGLLVSF
FLLIKILEILRRLDWWWISLSSPKGKMQCAFQDTGAQISPHYVGSCPWGCPGFLWTYLRL
FIIFLLILLVAAGLLYLTDNGSTILGKLQWASVSALFSSISSLLPSDPKSLVALTFGLSL
IWMTSSSATQTLVTLTQLATLSALFYKS
Gene Ontology
GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW
GO:0019012; C:virion; IEA:UniProtKB-KW
GO:0039663; P:membrane fusion involved in viral entry into host cell; IEA:UniProtKB-KW
GO:0019062; P:virion attachment to host cell; IEA:UniProtKB-KW
Interpro
InterPro; IPR000349; Hepvir_surfAg
Pfam
Pfam; PF00695; vMSA;
SMART
PROSITE
PRINTS