signal

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sig·nal

(sig'năl),
1. Something that causes an action or conveys information.
2. A DNA template sequence that alters RNA polymerase transcription.
3. The end product observed when a specific sequence of DNA or RNA is deleted by some method.
4. The message transmitted on binding of an agonist to a receptor.

signal

(sĭg′nəl)
n.
Biology A physical entity, such as a chemical or an electromagnetic wave, that activates a cell receptor and elicits a specific response.
v. sig·naled, sig·naling, sig·nals or sig·nalled or sig·nalling
v.tr.
To cause an effect in (a cell) by the activation of a receptor, as by a neurotransmitter or hormone.

sig′nal·er, sig′nal·ler n.

signal

A measurable or recognisable indicator of an event or process.

signal

Medtalk A measurable or recognizable indicator of an event or process. See Magnetic resonance signal, Sexual body signal.

sig·nal

(sig'năl)
1. Something that causes an action.
2. A DNA template sequence that alters RNA polymerase transcription.
3. The end product observed when a specific sequence of DNA or RNA is deleted by some method.
4. Anything or action that communicates something.

signal

1. audible or visible indications to animals in behavioral conditioning. Many signals have had long-term use in the animal world and are used worldwide. Whoa and Getup, Heel and Sit are common examples. Getawayback is perhaps more colloquial. Many sheepdogs are trained to react to whistles and performing animals are usually trained to react to gestures with the hand.
2. in biochemical terminology relates to staging in reactions; see signal sequence.

signal peptidase
an integral membrane protein located on the luminal surface of the endoplasmic reticulum that cleaves the signal peptide and frees the protein for folding and export.
signal recognition particle (SRP)
a particle composed of six different proteins and one small (7S) RNA that binds to the signal peptide as it emerges from the ribosome, temporarily halting the synthesis of the protein while the complex is transported to the endoplasmic reticulum where the SRP recognizes and docks to a docking protein located on the cytoplasmic surface followed by the transfer of the ribosome to a ribosome receptor on the membrane; the SRP and its docking protein are released from the ribosome and translation resumes.
signal transduction proteins
proteins which may be a protein kinase, an ion channel forming protein (as in nerve cells), or a protein that undergoes some energy dependent change in which the energy is supplied by the hydrolysis of a higher energy compound such as guanosine triphosphate.
References in periodicals archive ?
From a single platform, the EAGLE 5 ISS performs key functions such as signal transfer, signaling gateway and number portability.
SERIAL ATA-BEYOND BETTER SIGNALING CHARACTERISTICS.
The SC, SF and SD support highly scalable, hardware-based TLS and IPSec encryption for SIP signaling.
The Interphase Signaling Gateway is available as an appliance with NEBS-compliant telecommunication servers or as a blade-level solution in CompactPCI and AdvancedTCA platform architectures.
Inter-Working Function (IWF) - provides signaling protocol inter-working between the SIP-based IMS network and other service provider networks using H.
Service infrastructure DoS prevention: Per-device signaling and media overload control, with deep packet inspection and call rate control to prevent DoS attacks from reaching service infrastructure such as SIP servers, softswitches, application servers, media servers or media gateways.
The XO deployment expands Tekelec's successful partnership with TNS, which has deployed two EAGLE platforms in the TNS signaling network.
The link density, throughput and performance of the Adax Signaling Gateways have all been increased following upgrades to the communications controllers and software modules.
For more than twenty years, Adax has been the industry leader in high performance wide area communications and signaling infrastructure.
The signaling gateway products enable direct IP migration of existing signaling points, regardless of network architecture and are fully interoperable with other gateways, Signal Transfer Points, databases and legacy PSTN switches.
NYSE:BEC) today announced it has entered into a reagent development and distribution agreement with Cell Signaling Technologies, Inc.