Olfactory Receptors
Olfactory Receptors - Related Videos
12:02
High-throughput Analysis of Mammalian Olfactory Receptors: Measurement of Receptor Activation via Luciferase Activity
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Cited by 16 •
2014
Olfactory receptor activation patterns encode odor identity, but the lack of published data identifying odorant ligands for mammalian olfactory receptors hinders the development of a comprehensive model of odor coding. This protocol describes a method to facilitate high-throughput identification of olfactory receptor ligands and quantification of receptor activation.
05:21
Whole Mount Immunolabeling of Olfactory Receptor Neurons in the Drosophila Antenna
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Cited by 7 •
2014
Herein we describe the process of whole mount immunostaining of Drosophila antennae, which enables us to better understand the molecular mechanisms involved in the diversification of olfactory receptor neurons (ORN)s.
08:08
Odorant-induced Responses Recorded from Olfactory Receptor Neurons using the Suction Pipette Technique
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Cited by 13 •
2012
Olfactory receptor neurons (ORNs) convert odor signals first into a receptor current that in turn triggers action potentials that are conveyed to second order neurons in the olfactory bulb. Here we describe the suction pipette technique to record simultaneously the odorant-induced receptor current and action potentials from mouse ORNs.
01:03
Olfactory Receptors: Location and Structure
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2024
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
08:42
Whole Mount Labeling of Cilia in the Main Olfactory System of Mice
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Cited by 13 •
2014
Cilia of olfactory sensory neurons contain proteins of the signal transduction cascade, but a detailed spatial analysis of their distribution is difficult in cryosections. We describe here an optimized approach for whole mount labeling and en face visualization of ciliary proteins.
FAQs
The cilia provide a specialized site where olfactory receptors encounter odorant molecules. Located on olfactory sensory neurons, these receptor-bearing structures connect detection at the cell surface with signaling inside the neuron. This arrangement is important because it allows chemical information from the environment to initiate the cellular activity that contributes to smell perception.
Golf acts as the signaling intermediary after an odorant binds its receptor. The activated receptor stimulates adenylyl cyclase, which raises cyclic AMP. That messenger then helps open ion channels, changing the electrical state of the olfactory sensory neuron through depolarization. Following this sequence is essential for tracing how molecular recognition becomes neural activity.
Distinct odors are associated with patterns of receptor activity rather than with a single undifferentiated signal. The brain interprets these activity patterns as different odors, linking receptor responses to sensory coding. This principle helps explain how a shared detection system can represent numerous environmental chemicals and support odor discrimination.
Studying olfactory receptor activity can reveal how environmental chemicals are represented in neural signals. Comparing the resulting patterns helps connect molecular detection with sensory coding, the process by which the nervous system organizes stimulus information. In biology, this perspective relates receptor-level events to the perception of distinct odors and the behavioral significance of chemical cues.
Because olfactory receptors respond to environmental chemicals, their activity provides a biological link between external conditions and behavior. Research on this link can examine how sensory signals contribute to an organism’s recognition of chemical cues and subsequent behavioral responses. The receptors therefore connect molecular events in olfactory sensory neurons with broader questions about how organisms interact with their surroundings.
Olfactory receptor research can inform odor-detection technologies by identifying principles for converting chemical inputs into recognizable signal patterns. The biological system offers a model in which receptor activity is translated into neural information and then distinguished by pattern. Such work may also support potential biomedical applications, although the overview identifies these as research directions rather than specifying a particular device or treatment.