By Dr Khawar Sohail Siddiqui

Journal articles

Siddiqui KS; Bokhari S; Afzal A; Singh S, 2004, 'A novel thermodynamic relationship based on Kramers Theory for study ingenzyme kinetics under high viscosity', IUBMB Life, 56, pp. 403 - 407

Siddiqui KS; Poljak A; Cavicchioli R, 2004, 'Improved activity and stability of alkaline phosphatases from psychrophilic and mesophilic organisms by chemically modifying aliphatic or amino groups using tetracarboxy-benzophenone derivatives', Cellular and Molecular Biology, 50, pp. 657 - 667

Bokhari SA; Afzal AJ; Rashid MH; Rajoka MI; Siddiqui KS, 2002, 'Coupling of surface carboxyls of carboxymethylcellulase with aniline via chemical modification: Extreme thermostabilization in aqueous and water-miscible organic mixtures', Biotechnology Progress, 18, pp. 276 - 281, http://dx.doi.org/10.1021/bp010146h

Cavicchioli R; Sowers KR; Siddiqui KS; Andrews D, 2002, 'Low-temperature extremophiles and their applications', Current Opinion in Biotechnology, 13, pp. 253 - 261

Siddiqui KS; Cavicchioli R; Thomas T, 2002, 'Thermodynamic activation properties of elongation factor 2 (EF-2) proteins from psychrotolerant and thermophilic Archaea', Extremophiles, 6, pp. 143 - 150

Siddiqui KS; Saqib AAN; Rashid MH; Rajoka MI, 2000, 'Carboxyl group modification significantly altered the kinetic properties of purified carboxymethylcellulase from Aspergillus niger', Enzyme and Microbial Technology, 27, pp. 467 - 474, http://dx.doi.org/10.1016/S0141-0229(00)00254-4

Afzal AJ; Bokhari SA; Ahmad W; Rashid MH; Rajoka MI; Siddiqui KS, 2000, 'Two simple and rapid methods for the detection of polymer-degrading enzymes on high-resolution, alkaline, cold, in situ-native (HiRACIN)-PAGE and high-resolution, in situ-inhibited native (HiRISIN)-PAGE', Biotechnology Letters, 22, pp. 957 - 960, http://dx.doi.org/10.1023/A:1005676824462

Siddiqui KS; Shemsi AM; Anwar MA; Rashid MH; Rajoka MI, 1999, 'Partial and complete alteration of surface charges of carboxymethylcellulase by chemical modification: Thermostabilization in water-miscible organic solvent', Enzyme and Microbial Technology, 24, pp. 599 - 608, http://dx.doi.org/10.1016/S0141-0229(98)00170-7

Rashid MH; Shakoori AR; Rajoka MI; Siddiqui KS, 1998, 'Monitoring of Carboxyl Group Modification of Beta-Glucosidase from Aspergillus niger NIAB-280 by Native Enzyme Mobility Shift Assay (NEMSA)', Pakistan Journal of Zoology, 30, pp. 99 - 104

Rashid MH; Siddiqui KS; Shakoori AR; Rajoka MI; Malik KA, 1998, 'Purification and Characterization of Chemically Modified Beta-Glucosidases from Aspergillus niger NIAB-280', Pakistan Journal of Zoology, 30, pp. 23 - 30

Rashid MH; Siddiqui KS, 1998, 'Thermodynamic and kinetic study of stability of the native and chemically modified β-glucosidases from Aspergillus niger', Process Biochemistry, 33, pp. 109 - 115, http://dx.doi.org/10.1016/S0032-9592(97)00036-8

Shemsi AM; Ahmad T; Rashid MH; Siddiqui KS, 1998, 'Automation of compartmental electrophoresis apparatus for the separation of non-covalently attached polysaccharides from proteins', Enzyme and Microbial Technology, 22, pp. 76 - 77, http://dx.doi.org/10.1016/S0141-0229(97)00098-7

Rashid MH; Siddiqui KS, 1998, 'Carboxy-group modification: High-temperature activation of charge- neutralized and charge-reversed β-glucosidases from Aspergillus niger', Biotechnology and Applied Biochemistry, 27, pp. 231 - 237, http://dx.doi.org/10.1111/j.1470-8744.1998.tb00499.x

Rashid MH; Rajoka MI; Siddiqui KS; Shakoori AR, 1997, 'Effect of different substrates on the simultaneous production of beta-glucosidase and polysaccharides by Aspergillus niger NIAB 280', Pakistan Journal of Zoology, 29, pp. 175 - 179

Rashid MH; Saqib AAN; Rajoka MI; Siddiqui KS, 1997, 'Native enzyme mobility shift assay (NEMSA): A new method for monitoring carboxyl group modification of carboxymethylcellulase from Aspergillus niger', Biotechnology Techniques, 11, pp. 245 - 247

Siddiqui KS; Rashid MH; Rajoka MI, 1997, 'Kinetic Analysis of the Active Site of an Intracellular β-Glucosidase from Cellulomonas biazotea', Folia Microbiologica, 42, pp. 53 - 58, http://dx.doi.org/10.1007/BF02898646

Rashid MH; Siddiqui KS, 1997, 'Purification and Characterization of a β-Glucosidase from Aspergillus niger', Folia Microbiologica, 42, pp. 544 - 550, http://dx.doi.org/10.1007/bf02815462

Siddiqui KS; Rashid MH; Ghauri TM; Durrani IS; Rajoka MI, 1997, 'Purification and characterization of an intracellular β-glucosidase from Cellulomonas biazotea', World Journal of Microbiology and Biotechnology, 13, pp. 245 - 247, http://dx.doi.org/10.1023/A:1018510418900

Siddiqui KS; Azhar MJ; Rashid MH; Ghuri TM; Rajoka MI, 1997, 'Purification and the Effect of Manganese Ions on the Activity of Carboxymethylcellulases from Aspergillus niger and Cellulomonas biazotea', Folia Microbiologica, 42, pp. 303 - 311, http://dx.doi.org/10.1007/BF02816940

Siddiqui KS; Azhar MJ; Rashid MH; Rajoka MI, 1997, 'Stability and Identification of Active-Site Residues of Carboxymethylcellulases from Aspergillus niger and Cellulomonas biazotea', Folia Microbiologica, 42, pp. 312 - 318, http://dx.doi.org/10.1007/BF02816941

Siddiqui KS; Saqib AAN; Rashid MH; Rajoka MI, 1997, 'Thermostabilization of carboxymethylcellulase from Aspergillus niger by carboxyl group modification', Biotechnology Letters, 19, pp. 325 - 330, http://dx.doi.org/10.1023/A:1018342632083

Siddiqui KS; Azhar MJ; Rashid MH; Rajoka MI, 1996, 'Activity and thermostability of carboxymethylcellulase from Aspergillus niger is strongly influenced by non-covalently attached polysaccharides', World Journal of Microbiology and Biotechnology, 12, pp. 213 - 216, http://dx.doi.org/10.1007/BF00360917

Rashid MH; Siddiqui KS, 1996, 'The Stability of Extracellular β-Glucosidase from Aspergillus niger Is Significantly Enhanced by Non-covalently Attached Polysaccharides', Folia Microbiologica, 41, pp. 341 - 346, http://dx.doi.org/10.1007/BF02814712

Siddiqui KS; Rashid MH; Shemsi AM; Rajoka MI, 1994, 'A simple and nondestructive method for the separation of polysaccharides from β-glucosidase produced extracellularly by Aspergillus niger', Enzyme and Microbial Technology, 16, pp. 912 - 917, http://dx.doi.org/10.1016/0141-0229(94)90067-1

SIDDIQUI KS; LOVINYANDERTON T; RANGARAJAN M; HARTLEY BS, 1993, 'ARTHROBACTER D-XYLOSE ISOMERASE - CHEMICAL MODIFICATION OF CARBOXY GROUPS AND PROTEIN ENGINEERING OF PH OPTIMUM', BIOCHEMICAL JOURNAL, 296, pp. 685 - 691, http://dx.doi.org/10.1042/bj2960685

SIDDIQUI KS; RANGARAJAN M; HARTLEY BS; KITMITTO A; PANICO M; BLENCH IP; MORRIS HR, 1993, 'ARTHROBACTER D-XYLOSE ISOMERASE - PARTIAL PROTEOLYSIS WITH THERMOLYSIN', BIOCHEMICAL JOURNAL, 289, pp. 201 - 208, http://dx.doi.org/10.1042/bj2890201

Preprints

Siddiqui K; Ertan H; Poljak A; Ren Y; Jayasena T; Sachdev P, 2025, Unveiling the evolutionary code of NOTCH3: mammalian bioinformatics sheds light on human pathogenicity, http://dx.doi.org/10.1101/2025.09.28.678708

Siddiqui KS; Ertan H; Ren Y; Plojak A; Jayasena T; Sachdev P, 2025, Unveiling the evolutionary code of NOTCH3: mammalian bioinformatics sheds light on human pathogenicity., http://dx.doi.org/10.1101/2025.09.28.678708

Clarke R; Govindaraju H; Beretta M; Olzomer E; Lawther A; Walker A; Fang Z; Eapen V; Cohen-Hyams T; Killingsworth M; Bridge W; Turner N; Siddiqui K, 2023, IMMP2L Peptidase Enhances the Structure and Function of Mitochondrial GPD2 Dehydrogenase., http://dx.doi.org/10.20944/preprints202312.0505.v1

Back to profile page