Infoblock · public evidence graph · physarum

In Physarum actomyosin, Ca2+ INHIBITS contraction — the opposite sign to animal striated muscle — and intracellular Ca2+ oscillates near-antiphase with tube radius.

✓ VERIFIED

Grade E1 · state: verified · id: IB-physarum-ca-inhibits

Quantities: Ca2+-inhibition sign stable across ~40 years of biochemistry; Ca2+ vs tube-radius phase relation is near-antiphase

Primary source

Kohama — Physarum myosin Ca2+-regulation (report gives author name only; ~40-yr literature, no year/venue specified)
Kscheschinski, Kramar & Alim 2023 (venue unverified in report)

Edges (outgoing)

• relates → In Physarum a stimulus self-propagates ADVECTIVELY on the cytoplasmic — this Ca2+ oscillator is the pump that drives the shuttle-streaming flow doing the transport
• relates → In the only directly-testable system (Physarum), body-wide contraction — this local oscillator is exactly what fails to lock into one global wave

Incoming edges (what points here)

• In Physarum a stimulus self-propagates ADVECTIVELY on the cytoplasmic — relates → this (the Ca2+ oscillator is the pump behind this advective flow)