Abstract:
:The acylation of myelin proteolipid protein (PLP) and intermediate protein (IP) was investigated in an in vitro system of tissue slices prepared from actively myelinating rat brainstem. The incorporation of [(3)H]palmitate into the proteins in nine subcellular fractions including myelin and other cellular membranes which are actively involved in the synthesis and intracellular transport of the proteins was measured. More than 80% of [(3)H]palmitate-labeled proteins were recovered in myelin. The incorporation was highest in the heavy myelin and lowest in the light myelin subfraction. Appreciable acylation was also detected in the myelin-like fraction. On the other hand, the remaining fractions comprising a variety of endo- and ectomembranes, which harbored over 90% of newly synthesized PLP and IP as seen from [(3)H]leucine labeling showed practically no [(3)H]palmitate incorporation. The results indicate that the acylation of PLP and IP is a late event in their posttranslational processing and occurs only at their entry into the myelin sheath.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Konat G,Gantt G,Hogan ELdoi
10.1016/0197-0186(86)90148-8subject
Has Abstractpub_date
1986-01-01 00:00:00pages
545-9issue
4eissn
0197-0186issn
1872-9754pii
0197-0186(86)90148-8journal_volume
9pub_type
杂志文章abstract::We have found that the platelet activating factor antagonist (BN52021) is an effective blocker of the glycine (Gly) receptor-mediated responses in the hippocampal pyramidal neurons of rat. Using the whole-cell voltage clamp and concentration clamp recording techniques, we investigated the mechanism underlying the inhi...
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章
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