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Myotrophin is a soluble-12 kilodalton protein isolated from hypertrophied spontaneously hypertensive rat and dilated cardiomyopathic human hearts. We have recently cloned the gene coding for myotrophin and expressed it in Escherichia coli. In the present study, the expression of myotrophin gene was analyzed, and at least seven transcripts have been detected in rat heart and in other tissues.

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A 12-kilodalton N-glycosylated growth hormone-related peptide is present in human pituitary extracts.

J Clin Endocrinol Metab

July 1993

Laboratorio de Neurociencias, Ramón Domínguez, Department of Physiology, Faculty of Medicine, Santiago de Compostela, Spain.

This study was designed to investigate whether N-linked glycosylation could account for the presence of glycosylated GH forms (G-GH) in human pituitary extracts. The study was carried out in commercially available pituitary GH preparations (pitGH). Recombinant GHs obtained from eu- or prokaryotic cells were used as controls.

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Normal and tumoral human pituitaries release in vitro SRIH and contain messenger RNAs encoding preproSRIH. In the present study, we document the presence and characterization of the SRIH precursor in both human normal pituitaries and in GH-secreting adenomas. Molecular sieve filtration of normal pituitary and adenoma acid extracts revealed the presence of three immunoreactive SRIH peaks, distinct from SRIH 1-28 and SRIH 1-14.

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Endoglycanase-Catalyzed Degradation of Hemicelluloses during Development of Carnation (Dianthus caryophyllus L.) Petals.

Plant Physiol

March 1991

Vegetable Crops Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Florida 32611.

Large molecular-size hemicelluloses, including xyloglucan, decreased in quantity during development of carnation (Dianthus caryophyllus L. cv White Sim) petals, along with a relative increase in polymers with an average size of 10 kilodaltons. An enzyme extract from senescing petal tissue depolymerized the large molecular-size hemicelluloses in a pattern similar to that occurring in vivo during petal development.

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