Retroviral envelope proteins mediate receptor recognition and membrane fusion during early infection. Endogenous envelope proteins may have kept, lost or modified their original function during evolution. This endogenous envelope protein has retained its original fusogenic properties and participates in trophoblast fusion during placenta morphogenesis.
SU mediates receptor recognition. This interaction triggers the refolding of the transmembrane protein (TM) and is thought to activate its fusogenic potential by unmasking its fusion peptide (By similarity). Seems to recognize the type D mammalian retrovirus receptors SLC1A4 and SLC1A5, as it induces fusion of cells expressing these receptors in vitro.
The transmembrane protein (TM) acts as a class I viral fusion protein. Under the current model, the protein has at least 3 conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During viral and target cell membrane fusion, the coiled coil regions (heptad repeats) assume a trimer-of-hairpins structure, positioning the fusion peptide in close proximity to the C-terminal region of the ectodomain. The formation of this structure appears to drive apposition and subsequent fusion of membranes.

HERV-W_7q21.2 provirus ancestral Env polyprotein; Endogenous retrovirus group W member 1; env; Env-W; Envelope polyprotein gPr73; Enverin; ENW1_HUMAN; ERVW; ERVW-1; Gp24; Gp50; HERV-7q Envelope protein; HERV-W envelope protein; HERVW; SU; Syncytin 1; Syncytin; Syncytin-1; TM; Transmembrane protein; Surface protein.

Human,Mouse

WB

WB 1:500-2000

33/58kD

30816

Q9UQF0

https://www.uniprot.org/uniprotkb/Q9UQF0

Transmembrane protein: Cell membrane; Single-pass type I membrane protein (By similarity).
Surface protein: Cell membrane; Peripheral membrane protein (By similarity). Note=The surface protein is not anchored to the membrane, but localizes to the extracellular surface through its binding to TM (By similarity).
HERV-W_7q21.2 provirus ancestral Env polyprotein: Virion (By similarity).

Expressed at higher level in placental syncytiotrophoblast. Expressed at intermediate level in testis. Seems also to be found at low level in adrenal tissue, bone marrow, breast, colon, kidney, ovary, prostate, skin, spleen, thymus, thyroid, brain and trachea. Both mRNA and protein levels are significantly increased in the brain of individuals with multiple sclerosis, particularly in astrocytes and microglia.

KLH conjugated synthetic peptide derived from human Syncytin 1

Rabbit

Polyclonal

IgG

affinity purified by Protein A

Liquid

0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol.

Shipped at 4℃. Store at -20℃ for one year. Avoid repeated freeze/thaw cycles.