SPS

The Hughes SCANFAR system was the first deployed United States Navy phased array radar system installed on the USS Long Beach (CGN-9) and USS Enterprise (CVN-65). It consisted of two search radars, the AN/SPS-32 and the AN/SPS-33. In 1982, the system was removed from Long Beach, and was replaced by the AN/SPS-48 during a comprehensive overhaul. Aboard the Long Beach, the system used AN/SPG-55 radars for missile guidance.

Despite its failure to enter widespread service, the lessons learned were applied to the follow-on Aegis Combat System and the associated AN/SPY-1 passive electronically scanned array (PESA) radar.

History

Prior to the development of SCANFAR, the Navy had been developing an advanced anti-aircraft weapon system combining an extremely advanced radar system, the AN/SPG-59, with a new long-range missile known as the RIM-50 Typhon. The radar acted both as a long-range surveillance system as well as the target illumination and guidance system for the missiles. The system proved to be beyond the state of the art, in particular the radar required a larger number of individual broadcast elements that proved to be unreliable and expensive.

All-trans-nonaprenyl diphosphate synthase (geranylgeranyl-diphosphate specific)

All-trans-nonaprenyl diphosphate synthase (geranylgeranyl-diphosphate specific) (EC 2.5.1.85, nonaprenyl diphosphate synthase, solanesyl diphosphate synthase, At-SPS2, At-SPS1, SPS1, SPS2) is an enzyme with system name geranylgeranyl-diphosphate:isopentenyl-diphosphate transtransferase (adding 5 isopentenyl units). This enzyme catalyses the following chemical reaction

Geranylgeranyl diphosphate is preferred over farnesyl diphosphate as allylic substrate.

References

External links

All-trans-nonaprenyl diphosphate synthase (geranylgeranyl-diphosphate specific) at the US National Library of Medicine Medical Subject Headings (MeSH)

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All-trans-nonaprenyl diphosphate synthase (geranylgeranyl-diphosphate specific)

References

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