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01Why Pathways Matter02Reading Pathway Diagrams03Glycolysis & the TCA Cycle04Oxidative Phosphorylation05Lipid & Amino Acid Metabolism06Signal Transduction Basics07RTKs, RAS-MAPK & PI3K-AKT08Wnt, Hedgehog & Notch09Immune Signaling Pathways10Apoptosis & Cell Cycle Control11Disease Pathways & Drug Targets12Capstone: Cross-Pathway Reasoning
Evidence-first knowledge base. For education only — not medical advice. Verify against current guidelines.
Home/Membrane Transport
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Membrane Transport Pathways

Ion channels, pumps, and vesicular transport

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Membrane Transport

Receptor-Mediated Endocytosis

Clathrin-coated pit internalization of receptor-ligand complexes.

ClathrinAP-2Dynamin+5
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Membrane Transport

Vesicular Transport (Secretory Pathway)

ER-to-Golgi-to-plasma membrane trafficking via coated vesicles.

COPII coatCOPI coatClathrin+4
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Membrane Transport

Ion Channel Signaling

Selective ion flux through membrane channels driving electrical and chemical signals.

Na⁺K⁺Ca²⁺+5
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Membrane Transport

ABC Transporter Superfamily

ATP-driven efflux pumps transporting diverse substrates across membranes.

ATPLipidsDrugs+4
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Membrane Transport

Nuclear Import/Export

Ran-GTPase-driven transport of macromolecules through nuclear pore complexes.

Importin α/βExportin 1 (CRM1)RanGTP/GDP+5
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Membrane Transport

Mitochondrial Protein Import

Targeting and translocation of nuclear-encoded proteins into mitochondria.

MTS (targeting peptide)TOM40TIM23+5
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