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ROCs and SOCs: what's in a name?

L J Janssen¹, C Y Kwan

¹St. Joseph's Hospital, Firestone Institute for Respiratory Health, McMaster University, Hamilton, Ontario, Canada. janssenl@mcmaster.ca <janssenl@mcmaster.ca>

|August 29, 2006

Summary

Clarifying calcium channel terminology is crucial for understanding physiological responses. This paper defines criteria to distinguish receptor-operated channels (ROCs) and store-operated channels (SOCs), addressing current ambiguity.

Area of Science:

Cellular physiology
Molecular biology
Calcium signaling

Background:

Calcium ions (Ca2+) play vital roles in numerous physiological processes.
Distinguishing between external and internal Ca2+ sources is critical for understanding these roles.
Current terminology, particularly for receptor-operated channels (ROCs) and store-operated channels (SOCs), lacks precision and causes confusion.

Purpose of the Study:

To address the ambiguity in terminology surrounding calcium channels.
To establish clear criteria for differentiating between ROCs and SOCs.
To improve clarity in the field of calcium signaling research.

Main Methods:

Review of fundamental principles of ion channel gating.
Analysis of current literature for examples of imprecise terminology.

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Proposal of precise definitions and criteria for classifying calcium channels.

Main Results:

Identification of over-use and blurring of distinctions for ROC and SOC terminology.
Establishment of criteria based on channel gating principles to differentiate channel functions.
Proposed solutions to the terminological quandary in calcium channel research.

Conclusions:

Precise terminology is essential for advancing the understanding of Ca2+ roles in physiology.
Clearer definitions for ROCs and SOCs will enhance research accuracy.
Adoption of proposed criteria will resolve current ambiguities in the field.