In silico analysis of some microbial amidases for their amino acid and physiochemical parameters

作者: Krishan Gopal , Nikhil Sharma , TC Bhalla , None

DOI: 10.21746/IJBIO.2013.04.0012

关键词:

摘要: Amino acid sequences of amidases were retrieved from respective databases and in silico analysis for different physiochemical properties substrate specificity has been done. Multiple Sequence Alignment (MSA) statistical amino revealed significant differences among aliphatic signature terms conserved motif that plays a vital role binding catalytic function. MSA the residues involved function are position specific which remains within traid Cys-166, Glu-59, Lys-134, while amidase contains GGSS (S/G) GS Ser-171, Ser-195, Lys-96 not specific. Statistical these two groups also differ properties. In contrast to amidases, have significantly higher number & molecular mass, theoretical pI, charged (negative positive) residues, index grand average hydropathicity. Present investigation i.e. Cys, Met, Tyr, Asn, Ile, Trp, Glu Gly case acids i.e Leu, Pro, Ser, Ala Val found play an important both enzyme catalysis, as well structural stability.

参考文章(32)
M S Nawaz, A A Khan, J E Seng, J E Leakey, P H Siitonen, C E Cerniglia, Purification and characterization of an amidase from an acrylamide-degrading Rhodococcus sp. Applied and Environmental Microbiology. ,vol. 60, pp. 3343- 3348 ,(1994) , 10.1128/AEM.60.9.3343-3348.1994
Yu Zhang, Genyi Zhang, Ying Zhang, Occurrence and analytical methods of acrylamide in heat-treated foods. Review and recent developments. Journal of Chromatography A. ,vol. 1075, pp. 1- 21 ,(2005) , 10.1016/J.CHROMA.2005.03.123
Anna Liza B. Valiña, Devleena Mazumder-Shivakumar, Thomas C. Bruice, Probing the Ser-Ser-Lys catalytic triad mechanism of peptide amidase: computational studies of the ground state, transition state, and intermediate. Biochemistry. ,vol. 43, pp. 15657- 15672 ,(2004) , 10.1021/BI049025R
Jörg Labahn, Sebastian Neumann, Georg Büldt, Maria-Regina Kula, Joachim Granzin, An alternative mechanism for amidase signature enzymes Journal of Molecular Biology. ,vol. 322, pp. 1053- 1064 ,(2002) , 10.1016/S0022-2836(02)00886-0
Jack Kyte, Russell F. Doolittle, A simple method for displaying the hydropathic character of a protein Journal of Molecular Biology. ,vol. 157, pp. 105- 132 ,(1982) , 10.1016/0022-2836(82)90515-0
Amin Karmali, Renee Tata, Paul R. Brown, Substitution of Glu-59 by Val in amidase from Pseudomonas aeruginosa results in a catalytically inactive enzyme Molecular Biotechnology. ,vol. 16, pp. 5- 16 ,(2000) , 10.1385/MB:16:1:05
Hervé Chebrou, Frédéric Bigey, Alain Arnaud, Pierre Galzy, Study of the amidase signature group. Biochimica et Biophysica Acta. ,vol. 1298, pp. 285- 293 ,(1996) , 10.1016/S0167-4838(96)00145-8
S. I. Pertsovich, D. T. Guranda, D. A. Podchernyaev, A. S. Yanenko, V. K. Svedas, Aliphatic amidase from Rhodococcus rhodochrous M8 is related to the nitrilase/cyanide hydratase family. Biochemistry. ,vol. 70, pp. 1280- 1287 ,(2005) , 10.1007/S10541-005-0260-7