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Research draft

endoplasmic reticulum

vr.tr.endoplasmic-reticulum · PHY.LIV

Let an agent explain the endoplasmic reticulum and its subtypes, relay their structure and functions from cell biology sources, describe the sarcoplasmic reticulum in muscle, and relay its roles in disease.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent explain the endoplasmic reticulum and its subtypes, relay their structure and functions from cell biology sources, describe the sarcoplasmic reticulum in muscle, and relay its roles in disease.

A network of membrane-enclosed tubules and sacs in the cytoplasm of eukaryotic cells, continuous with the nuclear envelope, divided into rough endoplasmic reticulum studded with ribosomes that synthesises and folds secreted and membrane proteins, and smooth endoplasmic reticulum that makes lipids, detoxifies compounds and stores calcium; in muscle cells the specialised sarcoplasmic reticulum releases calcium to trigger contraction.

What it is for: Protein and lipid synthesis, calcium storage and detoxification in cells.

It can be explain structure and subtypes; relay functions; describe the sarcoplasmic reticulum; relay roles in disease.

Distinguishing features

Rough and smooth regions

Protein folding and quality control

Calcium store

Continuous with nuclear envelope

What it looks like

Not visible to the eye; seen by electron microscopy as membrane networks, rough with ribosomes or smooth.

Physical character

share of cell membrane: over half fraction - in many cells

How it is recognised

Membrane network continuous with the nuclear envelope

Rough and smooth regions, sarcoplasmic form in muscle

The Golgi apparatus is a separate organelle downstream

Related models

is a kind of - in registry terms

membrane-bounded organelle

is continuous with - the outer membrane

nuclear envelope

sends proteins to - in the secretory pathway

Golgi apparatus

stores - for signalling and contraction

calcium

In practice

Families and kinds

rough endoplasmic reticulum

smooth endoplasmic reticulum

sarcoplasmic reticulum of skeletal, cardiac and smooth muscle

transitional and specialised subdomains

Identifiers

Gene Ontology GO:0005783 endoplasmic reticulum

Standards and regulation

No regulation; research standards and nomenclature

Failure modes and hazards

ER stress and protein misfolding diseases

Muscle diseases from sarcoplasmic reticulum defects

Confusing subtypes

Also called

smooth endoplasmic reticulumrough endoplasmic reticulumsarcoplasmic reticulumsarcoplasmic reticulum of cardiac muscle cellsarcoplasmic reticulum of smooth muscle cellsarcoplasmic reticulum of skeletal muscle cellSarcoplasmic reticulumplasmodesmatal endoplasmic reticulummembrane stackEndoplasmic reticulum of striated muscle cellEndoplasmic reticulum of smooth muscle cell

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Structure Structure and subtypes.

Science.

Structure

Structure.

Structure

Structure.

  1. How is the endoplasmic reticulum organised, and how do rough and smooth regions differ? definition
  2. Is the organelle the ER, the Golgi apparatus or another membrane system? boundary

Muscle

Sarcoplasmic reticulum.

Muscle

Muscle.

  1. What is the sarcoplasmic reticulum, and how does it differ across muscle types? definition
  2. Which entry fits muscle contraction? action
Function Functions.

Science.

Proteins

Protein synthesis and folding.

Proteins

Proteins.

  1. How does the rough ER synthesise, fold and check secreted and membrane proteins? provenance
  2. Which entry fits the secretory pathway? action

Lipids

Lipids, calcium and detoxification.

Lipids

Lipids.

  1. How does the smooth ER make lipids, store calcium and detoxify compounds? provenance
  2. Which references are standard? provenance
Disease Disease and stress.

Application.

Stress

ER stress.

Stress

Stress.

  1. What is ER stress and the unfolded protein response, and which diseases involve them, with findings attributed? provenance
  2. Is the user asking about a personal condition, which needs a clinician? boundary

Muscle

Muscle disease.

Muscle

Muscle.

  1. Which muscle and heart conditions involve the sarcoplasmic reticulum? provenance
  2. Which entry fits the specific condition? action
Study Methods and history.

Study.

Methods

Methods.

Methods

Methods.

  1. How is the ER studied, from electron microscopy to live imaging? provenance
  2. Which sources are cited? provenance

History

History.

History

History.

  1. How was the ER discovered and characterised by Porter, Palade and others? provenance
  2. Which entry fits the history of cell biology? action

What the second pass must settle

  • Should the sarcoplasmic reticulum be a separate entry?
  • How should Gene Ontology terms be linked?
  • The registry entry has merged aliases naming subtypes; should they be split off?
Draft as JSON