Intercellular junctions in nerve-free hydra

TY - JOUR

T1 - Intercellular junctions in nerve-free hydra

AU - McDowall, A W

AU - Grimmelikhuijzen, C J

PY - 1980/1/1

Y1 - 1980/1/1

N2 - Epithelial cells of nerve-free hydra contain septate and gap junctions. In thin sections the gap junctions are characterized by a gap of 3-4 nm. Freeze-fracture demonstrates the presence of septate junctions and two further types of structures: (i) the "E-type" or "inverted" gap junctions with particles in an "enplaque conformation appearing as a raised plateau on the E-face or as a depression on the P-face; (ii) structures morphologically similar to gap junctions in rat liver, containing particles on the P-face and corresponding pits on the E-face, both having hexagonal packing with a lattice constant of 8 nm. We propose that these structures are also gap junctions.

AB - Epithelial cells of nerve-free hydra contain septate and gap junctions. In thin sections the gap junctions are characterized by a gap of 3-4 nm. Freeze-fracture demonstrates the presence of septate junctions and two further types of structures: (i) the "E-type" or "inverted" gap junctions with particles in an "enplaque conformation appearing as a raised plateau on the E-face or as a depression on the P-face; (ii) structures morphologically similar to gap junctions in rat liver, containing particles on the P-face and corresponding pits on the E-face, both having hexagonal packing with a lattice constant of 8 nm. We propose that these structures are also gap junctions.

KW - Animals

KW - Epithelium

KW - Freeze Fracturing

KW - Hydra

KW - Intercellular Junctions

M3 - Journal article

C2 - 7397766

SN - 0302-766X

VL - 209

SP - 217

EP - 224

JO - Cell and Tissue Research

JF - Cell and Tissue Research

IS - 2

ER -