| Structural characterization of a human cytosolic NMN/NaMN adenylyltransferase and implication in human NAD biosynthesis X Zhang, OV Kurnasov, S Karthikeyan, NV Grishin, AL Osterman, ... Journal of Biological Chemistry 278 (15), 13503-13511, 2003 | 179 | 2003 |
| Structural basis of the Na+/H+ exchanger regulatory factor PDZ1 interaction with the carboxyl-terminal region of the cystic fibrosis transmembrane conductance regulator S Karthikeyan, T Leung, JAA Ladias Journal of Biological Chemistry 276 (23), 19683-19686, 2001 | 147 | 2001 |
| Crystal structure of the PDZ1 domain of human Na+/H+ exchanger regulatory factor provides insights into the mechanism of carboxyl-terminal leucine recognition by class I PDZ … S Karthikeyan, T Leung, G Birrane, G Webster, JAA Ladias Journal of molecular biology 308 (5), 963-973, 2001 | 117 | 2001 |
| Crystal structure of human riboflavin kinase reveals a β barrel fold and a novel active site arch S Karthikeyan, Q Zhou, F Mseeh, NV Grishin, AL Osterman, H Zhang Structure 11 (3), 265-273, 2003 | 104 | 2003 |
| Structural Determinants of the Na+/H+ Exchanger Regulatory Factor Interaction with the β2Adrenergic and Platelet-derived Growth Factor Receptors S Karthikeyan, T Leung, JAA Ladias Journal of Biological Chemistry 277 (21), 18973-18978, 2002 | 98 | 2002 |
| Biochemical and structural characterization of a novel halotolerant cellulase from soil metagenome R Garg, R Srivastava, V Brahma, L Verma, S Karthikeyan, G Sahni Scientific reports 6 (1), 1-15, 2016 | 79 | 2016 |
| ChaC2, an Enzyme for Slow Turnover of Cytosolic Glutathione A Kaur, R Gautam, R Srivastava, A Chandel, A Kumar, S Karthikeyan, ... Journal of Biological Chemistry 292 (2), 638-651, 2017 | 66 | 2017 |
| Structure of buffalo lactoferrin at 2.5 Å resolution using crystals grown at 303 K shows different orientations of the N and C lobes S Karthikeyan, M Paramasivam, S Yadav, A Srinivasan, TP Singh Acta Crystallographica Section D: Biological Crystallography 55 (11), 1805-1813, 1999 | 60 | 1999 |
| Ligand binding-induced conformational changes in riboflavin kinase: structural basis for the ordered mechanism S Karthikeyan, Q Zhou, AL Osterman, H Zhang Biochemistry 42 (43), 12532-12538, 2003 | 54 | 2003 |
| Structural analysis of Pseudomonas 1-aminocyclopropane-1-carboxylate deaminase complexes: insight into the mechanism of a unique pyridoxal-5'-phosphate dependent cyclopropane … S Karthikeyan, Q Zhou, Z Zhao, CL Kao, Z Tao, H Robinson, H Liu, ... Biochemistry 43 (42), 13328-13339, 2004 | 49 | 2004 |
| Cross-talk between thiamin diphosphate binding and phosphorylation loop conformation in human branched-chain α-keto acid decarboxylase/dehydrogenase J Li, RM Wynn, M Machius, JL Chuang, S Karthikeyan, DR Tomchick, ... Journal of Biological Chemistry 279 (31), 32968-32978, 2004 | 42 | 2004 |
| Structure of buffalo lactoferrin at 3.3 Å resolution at 277 K S Karthikeyan, S Yadav, M Paramasivam, A Srinivasan, TP Singh Acta Crystallographica Section D: Biological Crystallography 56 (6), 684-689, 2000 | 34 | 2000 |
| Crystal structure of a complex formed between proteolytically-generated lactoferrin fragment and proteinase K TP Singh, S Sharma, S Karthikeyan, C Betzel, KL Bhatia Proteins: Structure, Function, and Bioinformatics 33 (1), 30-38, 1998 | 30 | 1998 |
| Design of specific structures using α, β-dehydro-phenylalanine residues: synthesis, crystal structure, and molecular conformation of Boc-L-Val-ΔPhe-ΔPhe-L-Val-ΔPhe-ΔPhe-L-Val … SN Mitra, S Dey, S Karthikeyan, TP Singh Biopolymers 41 (1), 97-105, 1997 | 27 | 1997 |
| The thrH gene product of Pseudomonas aeruginosa is a dual activity enzyme with a novel phosphoserine: homoserine phosphotransferase activity SK Singh, K Yang, S Karthikeyan, T Huynh, X Zhang, MA Phillips, ... Journal of Biological Chemistry 279 (13), 13166-13173, 2004 | 26 | 2004 |
| Structural variability and functional convergence in lactoferrins S Karthikeyan, S Sharma, AK Sharma, M Paramasivam, S Yadav, ... Current science 77 (2), 241-255, 1999 | 25* | 1999 |
| Evidence that phosphorylation of threonine in the GT motif triggers activation of PknA, a eukaryotic‐type serine/threonine kinase from Mycobacterium tuberculosis SK Ravala, S Singh, GS Yadav, S Kumar, S Karthikeyan, PK Chakraborti The FEBS journal 282 (8), 1419-1431, 2015 | 22 | 2015 |
| Structures of ternary complexes of aspartate-semialdehyde dehydrogenase (Rv3708c) from Mycobacterium tuberculosis H37Rv R Vyas, R Tewari, MS Weiss, S Karthikeyan Acta Crystallographica Section D: Biological Crystallography 68 (6), 671-679, 2012 | 22 | 2012 |
| Crystal structure analysis of icosahedral lumazine synthase from Salmonella typhimurium, an antibacterial drug target P Kumar, M Singh, S Karthikeyan Acta Crystallographica Section D: Biological Crystallography 67 (2), 131-139, 2011 | 22 | 2011 |
| Enhancement of catalytic efficiency of enzymes through exposure to anhydrous organic solvent at 70° C. Three‐dimensional structure of a treated serine proteinase at 2.2 Å … MN Gupta, R Tyagi, S Sharma, S Karthikeyan, TP Singh Proteins: Structure, Function, and Bioinformatics 39 (3), 226-234, 2000 | 21 | 2000 |
