Syncytin-1

UniProt data

UniProt name: SYCY1_HUMAN (Q9UQF0)

Gene name: ERVW-1; Synonyms=ERVWE1

Organism: Homo sapiens (Human).

Function: Endogenous envelope proteins may have kept, lost or modified their original function during evolution. Retroviral envelope proteins mediate receptor recognition and membrane fusion during early infection. The surface protein (SU) mediates receptor recognition, while the transmembrane protein (TM) acts as a class I viral fusion protein. The protein may have 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.

Subcellular location: Syncytin-1: Virion {ECO:0000250}.

Transmembrane domains:

  1. 444-464, 21 AA, Helical. {ECO:0000255}.

Sequence: 538 AA

10 20 30 40 50 60 MALPYHIFLF TVLLPSFTLT APPPCRCMTS SSPYQEFLWR MQRPGNIDAP SYRSLSKGTP 70 80 90 100 110 120 TFTAHTHMPR NCYHSATLCM HANTHYWTGK MINPSCPGGL GVTVCWTYFT QTGMSDGGGV 130 140 150 160 170 180 QDQAREKHVK EVISQLTRVH GTSSPYKGLD LSKLHETLRT HTRLVSLFNT TLTGLHEVSA 190 200 210 220 230 240 QNPTNCWICL PLNFRPYVSI PVPEQWNNFS TEINTTSVLV GPLVSNLEIT HTSNLTCVKF 250 260 270 280 290 300 SNTTYTTNSQ CIRWVTPPTQ IVCLPSGIFF VCGTSAYRCL NGSSESMCFL SFLVPPMTIY 310 320 330 340 350 360 TEQDLYSYVI SKPRNKRVPI LPFVIGAGVL GALGTGIGGI TTSTQFYYKL SQELNGDMER 370 380 390 400 410 420 VADSLVTLQD QLNSLAAVVL QNRRALDLLT AERGGTCLFL GEECCYYVNQ SGIVTEKVKE 430 440 450 460 470 480 IRDRIQRRAE ELRNTGPWGL LSQWMPWILP FLGPLAAIIL LLLFGPCIFN LLVNFVSSRI 490 500 510 520 530 EAVKLQMEPK MQSKTKIYRR PLDRPASPRS DVNDIKGTPP EEISAAQPLL RPNSAGSS

CATM prediction

The sequence of SYCY1_HUMAN returned 1 potential models

The positions at the dimer's interface are highlighted in yellow. The position at the crossing point is highlighted in orange.

# Sequence and interface d θ Z' ω' Score
           450       460     
    +    |    +    |    +  
(Å) (°) (Å) (°)  
LSQWMAWILAFLGALAAIILLLLFGAC 6.7 -55.0° 1.5 44.8 -19.9
LSQWMPWILPFLGPLAAIILLLLFGPC          

* Note: this sequence contains Pro residues. CATM substituted them with Ala during the modeling. The positions are marked.

Click on the model number to visualize its details below.

MODEL 1 DETAILS

Precited structure:


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Download model 1 structure: PDB, PyMOL session

List of hydrogen bonds:

Donor Acceptor Distance
B, 450, ALA, HA A, 449, LEU, O 3.22Å
B, 453, GLY, HA1 A, 450, ALA, O 2.63Å
B, 454, ALA, HA A, 453, GLY, O 3.18Å
A, 450, ALA, HA B, 449, LEU, O 3.22Å
A, 453, GLY, HA1 B, 450, ALA, O 2.63Å
A, 454, ALA, HA B, 453, GLY, O 3.18Å