I'm currently trying to find a way to extract site location data from Google Earth Engine for several MODIS products in its original projection (sinusoidal). Yet I have not managed to receive the exact pixel values as provided from MODIS itself.
So far I have used the commands like this.
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def _data_extract(site_id, sensor, lon, lat, radius, product, bands, res, start, end):
geometry = ee.Geometry.Point(lon, lat).buffer(radius)
col = ee.ImageCollection(product).\
filterDate(start, end);
projection = col.first().pixelLonLat().projection()
data2 = col.getRegion(geometry, int(res), projection.crs()).getInfo()
df2 = pd.DataFrame.from_records(data2[1:])