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1

Uses of second order variant Fibonacci universal code in cryptography

100%

Basu M. , Das M.

Control and Cybernetics

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2016

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tom Vol. 45, no. 2

239--251

EN

We know from Zeckendorf’s theorem that every positive integer n has unique representation of the form n =Pl k=1 akF(k), where ak ∈ {0,1} and F(k) is a Fibonacci number such that the string a1a2a3 ... does not contain any consecutive 1’s. In this paper we consider second order variant Fibonacci universal code from Gopala-Hemachandra sequence. Thereby, we describe the uses of this code in cryptography with an illustrative example.

2

An inflationary inventory model with time dependent demand with Weibull distribution deterioration and partial backlogging under permissible delay in payments

100%

Basu M. , Sinha S.

Control and Cybernetics

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2007

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tom Vol. 36, no 1

203-217

EN

This paper proposes to present a general inventory model with due consideration to the factors of time dependent partial backlogging and time dependent deterioration. It also takes into account the impact of inflation, time-dependent demand and permissible delay in payments.

3

Studies on Superoxide dismutase activities in virulent and avirulet strains of Agrobacterium tumefaciens and also in normal and crown gall tumor cells ofBryophyllum calycinum

80%

Banerjee D. , Basu M. , Choudhury I. , Chatterjee G. C.

Acta Microbiologica Polonica

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1982

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tom 31

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nr 2

4

Increased synthesis of dihydroxybenzoic acid in the presence of aluminium by Rhizobium MO1

80%

De M. , Basu M. , Chakrabartty P. K.

Acta Microbiologica Polonica

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2003

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tom 52

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nr 2

5

Biochemical studies on cytoplasmic membranes of agrocin sensitive and resistant strains of Agrobacterium tumefaciens

70%

Basu M. , Banerjee D. , Tewari R. , Das P. K. , Chatterjee G. C.

Acta Microbiologica Polonica

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1982

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tom 31

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nr 1

6

Isolation and computational characterization of glutathione peroxidase gene from an aquatic fern - Salvinia molesta

61%

Rahaman S. , Singh P. K. , Basu P. , Gupta S. , Basu M. , Ganguli S.

International Letters of Natural Sciences

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2016

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tom 51

EN

Pteridophytes and more specifically ferns represent a large but threatened group of plants which often serve as important environmental markers for pollution. Reports regarding stress responses in ferns are rare, apart from a few studies involving the ecological distribution and molecular marker studies. This work isolates a glutathione peroxidase enzyme from an aquatic fern widely distributed in fresh and polluted water bodies adjacent to sources of environmental polluted sources. Further computational analyses were performed to study the structure of the protein encoded by the open reading frame. Results indicate the presence of a large number of binding pockets which serve as important binding sites in the interactions with the cognate ligands.

7

Purification and characterization of avian glycolipid: beta-galactosyltransferases (GalT-4 and GalT-3): cloning and expression of truncated betaGalT-4

61%

Basu S. S. , Dastgheib S. , Ghosh S. , Basu M. , Kelly P. , Basu S.

Acta Biochimica Polonica

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1998

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tom 45

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nr 2

EN

Acidic glycolipid of ganglio-(containing sialic acid) and sialyl-lactofucosyl-type, SA-Lex (containing sialic acid and fucose) are developmentally regulated and appear to be ubiqitous on neuronal and cancer cell surfaces of animals. Two glycolipid: β-galactosyltransferases, GalT-3 and GalT-4, were characterized in embryonic chicken brain (ECB). Based on substrate competition experiments, these two activities were believed to be due to expression of two gene products. A cDNA fragments (about 600 bp) encoding the catalytic domain of the GalT-4 (UDP-Gal:LcOse3Cer β1,4galactosyltransferase) from ECB and human Colo-205 were isolated. These cDNAs were expressed as a soluble glutathione-S-transferase fusion protein (48 kDa) in Eschericchia coli. Interactions between GlcNAc-, UDP-hexanolamine-, and α-lactalbumin were studied with the purified fusion protein (recombinant and truncated). Functionally it was similar to that of native GalT-4 purified (40000-fold) from 11-day-old ECB. GalT-3 (UDP-Gal:GM2β1,3galactosyltransferase) was purified from 19-day-old ECB, and a polyclonal antibody was produced against the peptide backbone for immunoscreening of a λZAP ECB cDNA expression library. Each of the GalT-3 peptides (62 and 65 kDa was analyzed by protein fingerprinting analysis indicating a similar peptide mapping pattern.

8

Hydrophobic nature of mammalian ceramide glycanases: Purified from rabbit and rat mammary tissues

51%

Basu M. , Dastgheib S. , Girzadas M. A. , O'Donnell P. H. , Westarvelt C. W. , Li Z. , Inokuchi J. , Basu S.

Acta Biochimica Polonica

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1998

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tom 45

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nr 2

EN

The ceramide glycanase (CGase) activities, which cleave the intact oligosaccharide chain and the ceramide moiety of a glycosphingolipid, have been characterized from two mammalian sources. The enzymatic activities are almost comparable in rabbit and rat mammary tissues. The majority of the activities has been concentrated in the soluble fraction which could be partially purified using hydrophobic columns. The rabbit mammary ceramide glycanase activity has been purified up to 1438-fold using ion exchange and hydrophobic columns in tandem. The purified protein exhibited a molecular mass of 54 kDa which could be immunostained on the Western blot with clam anti-CGase polyclonal antibody. In addition, a 98 kDa protein also exhibited positive immunostain in a successive purified fraction with that antibody and is under investigation. The requirement for the optimal enzymatic activities are similar for both rabbit and rat CGase activities. The CGase activity requires the presence of detergent for optimal activity but is not dependent on the presence of any divalent cations. However, Hg2+, Zn2+, and Cu2+ are inhibitory to the enzymatic activities. It has been observed that rat as well as rabbit CGases are inhibited by both D- and L-PDMP (1-phenyl-2-decanoylamino-3-morpholino-1-propanol.HCl) and its higher analogue PPMP (1-phenyl-2-palmitoylamino-3-morpholino-1-propanol.HCl). Alkyl amines containing C12 and higher chains are also found to inhibit both rat and rabbit CGase activities. Substantial levels of CGase activities have also been observed in various human tumor cells as well as in developing avian brains. These observations are significant in view of the recent findings that ceramide, which is one of the enzymatic reaction products of CGase activity, is mediating different cellular events like signal transduction and apoptosis. The role of this enzyme in development, metastasis and cellular regulation are anticipated.