Patched (Ptc) is a conserved 12-pass transmembrane protein receptor that plays an obligate negative regulatory role in the Hedgehog signaling pathway in insects and vertebrates. Patched is an essential gene in embryogenesis for proper segmentation in the fly embryo, mutations in which may be embryonic lethal. Patched functions as the receptor for the Hedgehog protein and controls its spatial distribution, in part via endocytosis of bound Hedgehog protein, which is then targeted for lysosomal degradation.
Keel haul
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A punishment for sailors, in which the sailor is tied up and hauled under the ship along the entire length of the [keel] resulting in many scrapes, cuts and slivers.
Keel haul meaning & definition 1 of Keel haul.
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