Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1976-3-24
pubmed:abstractText
Homogenates of retinal external segments of rat, rabbit, beef and hen and of rat Harderian gland were found to possess a considerable activity of guanidineacetate-N-methyltransferase (GAMT, E.C. 2.1.1.2), comparable with the enzyme activity in liver, pancreas and testis. Permanent UV-illumination of rats (from 1 day to 1 week) resulted in the decrease of GAMT activity in retina and especially in Harderian gland. Caffeine (10(-4) M) and papaverine (10(-7) M) activated GAMT in retina and rat Harderian gland, while cycloheximide, a protein synthesis inhibitor (0.5-2 mkg/ml), eliminated caffeine-stimulated GAMT activity. Histamine (0.3 mkg/ml) inhibited GAMT activity both in retina and Harderian gland. A decrease of GAMT activity in retina, liver and testis of rat and an increase of the enzyme activity in rat pancreas and Harderian gland were observed in the presence of Mg2+ (5 mM). Physiological importance of GAMT and creatine in mammalian retina and rat Harderian gland is discussed.
pubmed:language
rus
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0320-9725
pubmed:author
pubmed:issnType
Print
pubmed:volume
40
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
353-7
pubmed:dateRevised
2007-7-23
pubmed:meshHeading
pubmed:articleTitle
[Guanidinoacetate-N-methyltransferase: location in mammalian retina and rat Harderian gland].
pubmed:publicationType
Journal Article, English Abstract