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Biomedical subjects

K Ghosh

Publications and source records attributed to K Ghosh.

At least 271 records · Page 15Linked to original sources
PubMed1985

Thallium poisoning--a case report.

An accidental outbreak of thallium poisoning in the Geological Survey of India, Calcutta, is investigated with a detailed follow-up of one case. Aetiopathogenesis is briefly mentioned.

Adult↗
PubMed1984

Structure and function of tryptophan tRNA from wheat germ.

The coding properties of tRNATrp from yeast and wheat germ were studied. Unlike E. coli tRNATrp or mitochondrial tRNATrp, eukaryotic tRNATrp did not recognize the UGA codon in vitro. The sequence of wheat germ tRNATrp as determined by [32P] post-labelling techniques is: [sequence in text] The interesting features are: (i) Presence of a C11:G24 base pair in contrast to the U11:G24 in E. coli Su- tRNATrp. (ii) The anticodon sequence is -CmCA- compared to -CCA- in E. coli tRNATrp. (iii) Lack of a hypermodified base i6A adjacent to the 3'-end of the anticodon. (iv) Presence of -T psi CG- sequence instead of -psi psi CG- sequence present in mammalian tRNATrp.

Base Sequence↗
PubMed1983

Haemoglobin E-beta-thalassaemia; a study of eight cases in Northwest India.

Eight cases of haemoglobin E-beta.thalassaemia are described. Seven of them are natives of Punjab, a Northwest province of India, and one is a native of Rajasthan, a province adjacent to Punjab. Hb E is rarely encountered in Punjab, but beta-thalassaemia is relatively common. The interaction of Hb E with beta-thalassaemia resulted in a varying severity of phenotypic manifestations. An extraordinary feature in 3 out of 8 cases was the presence of a high percentage of Hb E (94 to 96%) and proportionately low Hb F (4 to 6%). The interacting thalassaemia in 5 patients was of beta0 type and in 3 patients of beta+ type.

Adolescent↗
PubMed1982

Synthesis in vitro of full length genomic RNA and assembly of the nucleocapsid of vesicular stomatitis virus in a coupled transcription-translation system.

Synthesis of a small amount of 42S RNA in addition to the VSV specific mRNA species was observed in a coupled transcription-translation system containing ribonucleoprotein particles from L cell infected with vesicular stomatitis virus and nuclease-treated ribosomal extract obtained from uninfected HeLa cells. Analysis on a CsCl density gradient showed that the synthesized 42S RNA was associated with newly synthesized by protein as a nucleoprotein of bouyant density of 1.3 g/ml. The 42S RNA and the N protein present in the nucleoprotein were resistant to nuclease and protease, respectively. About 35% of the remaining 65% had a complementary polarity. The evidence presented here demonstrates that both the full length genomic and the complementary RNA are associated with N protein in the in vitro replication process. A template role for the complementary 42S RNA for replication of the genomic RNA is also suggested.

Animals↗
PubMed1982

Nucleotide sequence of wheat germ cytoplasmic initiator methionine transfer ribonucleic acid.

The primary sequence of wheat germ initiator tRNA has been determined using in vitro labelling techniques. The sequence is: pAUCAGAGUm1Gm2GCGCAG CGGAAGCGUm2GG psi GGGCCCAUt6AACCCACAGm7GDm5Cm5CCAGGA psi CGm1AAACCUG*GCUCUGAUACCAOH. As in other eukaryotic initiator tRNAs, the sequence -T psi CG(A)- present in loop IV of virtually all tRNA active in protein synthesis is absent and is replaced by -A psi CG-. The base pair G2:C71 present in all other initiator tRNAs recognized by E. coli Met-tRNA transformylase is absent and is replaced by U2:A71. Since wheat germ initiator tRNA is not formylated by E. coli Met-tRNA transformylase this implies a possible role of the G2:C71 base pair present in other initiator tRNAs in formylation of initiator tRNA species.

Base Sequence↗