Biomaterial Database

[Isolation, characterization, and translation of heterogeneous nuclear RNA from plasmacytoma cells]. 1981

V V Lebedev, and T M Shelepova

It was found that during hot phenol fractionation of plasmacytoma MOPC-21 cells, which produce immunoglobulins of gamma 1 chi-type, separation of nuclear and nucleolar RNAs, differing in kinetics of accumulation of radioactive precursors, distribution during gradient centrifugation procedures and in base composition, takes place. D-RNA 63 degrees and D-RNA 85 degrees, which possess similar characteristics with D-RNAs, discovered earlier in other cells were isolated. It was stated, the D-RNA 85 degrees is considerably enriched by 3'-terminal poly(A) sequences in comparison with D-RNA 63 degrees. During translation in cell-free protein synthesising system from Xenopus oocytes, these two fractions of hnRNA induced formation of immunospecific products. D-RNA 85 degrees stimulated synthesis of gamma 1 and chi chains more efficiently, that D-RNA 63 degrees. Polyadenylated and non-adenylated both D-RNAs stimulated synthesis gamma 1 and chi chains of immunoglobulin G1 during translation. This fact indicates the absence of significant differences in the informational content. These results give opportunity to propose the existence of two levels of processing pre-mRNA for immunoglobulin chains.

UI	MeSH Term	Description	Entries
D008807	Mice, Inbred BALB C	An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research.	BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D009374	Neoplasms, Experimental	Experimentally induced new abnormal growth of TISSUES in animals to provide models for studying human neoplasms.	Experimental Neoplasms,Experimental Neoplasm,Neoplasm, Experimental
D009865	Oocytes	Female germ cells derived from OOGONIA and termed OOCYTES when they enter MEIOSIS. The primary oocytes begin meiosis but are arrested at the diplotene state until OVULATION at PUBERTY to give rise to haploid secondary oocytes or ova (OVUM).	Ovocytes,Oocyte,Ovocyte
D010954	Plasmacytoma	Any discrete, presumably solitary, mass of neoplastic PLASMA CELLS either in BONE MARROW or various extramedullary sites.	Plasma Cell Tumor,Plasmocytoma,Plasma Cell Tumors,Plasmacytomas,Plasmocytomas,Tumor, Plasma Cell,Tumors, Plasma Cell
D002621	Chemistry	A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D005260	Female		Females
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012332	RNA, Heterogeneous Nuclear	Nuclear nonribosomal RNA larger than about 1000 nucleotides, the mass of which is rapidly synthesized and degraded within the cell nucleus. Some heterogeneous nuclear RNA may be a precursor to mRNA. However, the great bulk of total hnRNA hybridizes with nuclear DNA rather than with mRNA.	Heterogeneous Nuclear RNA,hnRNA,Nuclear RNA, Heterogeneous
D012334	RNA, Neoplasm	RNA present in neoplastic tissue.	Neoplasm RNA
D014176	Protein Biosynthesis	The biosynthesis of PEPTIDES and PROTEINS on RIBOSOMES, directed by MESSENGER RNA, via TRANSFER RNA that is charged with standard proteinogenic AMINO ACIDS.	Genetic Translation,Peptide Biosynthesis, Ribosomal,Protein Translation,Translation, Genetic,Protein Biosynthesis, Ribosomal,Protein Synthesis, Ribosomal,Ribosomal Peptide Biosynthesis,mRNA Translation,Biosynthesis, Protein,Biosynthesis, Ribosomal Peptide,Biosynthesis, Ribosomal Protein,Genetic Translations,Ribosomal Protein Biosynthesis,Ribosomal Protein Synthesis,Synthesis, Ribosomal Protein,Translation, Protein,Translation, mRNA,mRNA Translations