Occurrence and biosynthesis of sterols in certain marine invertebrates

dc.contributor.advisorLawrence, Addison Lee
dc.contributor.committeeMemberOró, John F.
dc.contributor.committeeMemberWeber, Darrell J.
dc.contributor.committeeMemberMailman, David S.
dc.contributor.committeeMemberKimball, Aubrey P.
dc.creatorGardiner, Wanda L.
dc.date.accessioned2022-07-07T20:12:16Z
dc.date.available2022-07-07T20:12:16Z
dc.date.issued1969
dc.description.abstractRepresentative species of the phyla Sipunculoidea, Echiuroidea, Mollusca (class Amphineura), and Echinoderroata (class Asteroidea, Echinoidea, and Ophiuroidea) were studied for lipid and sterol content. Cholesterol was found to be the major sterol in the sipunculid Dendrostomum pyroides. The echiuroid Urechis caupo was found to contain a mixture of [Delta][raised 5]-sterols with cholesterol, 24-methyl cholesterol, and 24-ethyl-cholesterol as the major components. The mollusks Cryptochiton stelleri and Mopalia muscosa contained [Delta][raised 7]-cholestenol as the major sterol in all the tissues with the exception of the oviduct in which the sterol cholestanol was found to be a major component. The echinoderm Patiria miniata contained a mixture of [Delta][raised 7]-sterols with [Delta][raised 7]-cholestenol predominating. The echinoid and ophiuroid, Lytechinus pictus and Ophioderma panamensis, respectively, both contained the A -unsaturated sterols. Cholesterol was the major sterol in L.pictus, but 0. panamensis was found to contain 22-dehydrocholesterol, 24-methyl-[Delta][raised 5,22]-cholestadienol, and 24-ethyl cholesterol in addition to cholesterol as major compounds. The echiuroid U. caupo was shown to be capable to synthesizing sterols at a low rate from 2-[raised 14]C-mevalonic acid.
dc.description.departmentBiology and Biochemistry, Department of
dc.format.digitalOriginreformatted digital
dc.format.mimetypeapplication/pdf
dc.identifier.other17971967
dc.identifier.urihttps://hdl.handle.net/10657/10423
dc.language.isoen
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleOccurrence and biosynthesis of sterols in certain marine invertebrates
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Arts and Sciences
thesis.degree.departmentBiology, Department of
thesis.degree.disciplineBiology
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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