15 posts · 1,736 views
This blog are about articles in the field of Structural Bioinformatics that I found interesting and wanted to write a short description about them, so that others might find it interesting as well.
ragothamanyennamalli
15 posts
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- May 24, 2013
- 02:50 PM
- 24 views
A mutation leads to phenomenal effect
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
A point mutation in a gene leads to a phenomenal effect on the phenotype. It is a classic Biochemistry textbook case study, Sickle Cell Anemia. The mutant hemoglobin has a Valine instead of the Glutamic acid. The change is highly observable in the form of a debilitating condition. But, not all point mutations in the protein sequence are debilitating, and sometimes they give rise to something spectacular. One such example is the White Tiger, frequently mistaken as an albino. The recent publicatio........ Read more »
Xu, X., Dong, G., Hu, X., Miao, L., Zhang, X., Zhang, D., Yang, H., Zhang, T., Zou, Z., Zhang, T.... (2013) The Genetic Basis of White Tigers. Current Biology. DOI: 10.1016/j.cub.2013.04.054
- May 23, 2013
- 07:15 PM
- 25 views
Molecular visualization tools - Survey and practical tips
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
What would be like to teach a class or describe someone about a protein, without visualizing its structure? Boring is one word that pops in my mind. I vividly remember the professor drawing two blobs touching each other, to describe protein-protein interaction, while explaining it either on the blackboard or on the transparencies of a over-head projector. Those were the days! Tracing back nearly 60 years back, when John Kendrew showed everyone a coiled mess, it has fueled every scientist's ........ Read more »
Craig, P., Michel, L., & Bateman, R. (2013) A survey of educational uses of molecular visualization freeware. Biochemistry and Molecular Biology Education, 41(3), 193-205. DOI: 10.1002/bmb.20693
- May 9, 2013
- 01:00 PM
- 50 views
Resist Thy Temptations
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
This is not a regular research blogging post, but important enough that anyone following this blog should be aware of it. Most of you doing research, I assume being associated with an institute/university, would have an academic email id that does not end with .com. You are vulnerable, my friend. Yes, the subject is "open access publishing scam".... Read more »
Butler, D. (2013) Investigating journals: The dark side of publishing. Nature, 495(7442), 433-435. DOI: 10.1038/495433a
Beall, J. (2012) Predatory publishers are corrupting open access. Nature, 489(7415), 179-179. DOI: 10.1038/489179a
- May 3, 2013
- 03:40 PM
- 72 views
Why blogging science is rewarding!
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
... Read more »
Bik HM, & Goldstein MC. (2013) An introduction to social media for scientists. PLoS biology, 11(4). PMID: 23630451
- April 30, 2013
- 05:55 PM
- 69 views
David Goodsell like images
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
Almost all of us visiting PDB would have looked at the image shown below that attract us like moths attracted to a light. I am talking about the aesthetically pleasing protein images created by David Goodsell. In case you didn’t know, he is the author of Molecule of the Month series. Since the images look anything like the ones we usually keep looking at, one is attracted to the level of abstraction the image projects due to which, the reader understands the big picture. And, of course, th........ Read more »
Sanner MF. (1999) Python: a programming language for software integration and development. Journal of molecular graphics , 17(1), 57-61. PMID: 10660911
Sanner MF, Olson AJ, & Spehner JC. (1996) Reduced surface: an efficient way to compute molecular surfaces. Biopolymers, 38(3), 305-20. PMID: 8906967
Goodsell, D. (2002) p53. RCSB Protein Data Bank. DOI: 10.2210/rcsb_pdb/mom_2002_7
- April 16, 2013
- 07:15 PM
- 51 views
Say Smiles
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
Recently, Babel (in my system) was not working and I needed to convert my .sdf files to smiles format. I troubleshooted the error was able to run successfully. But, this made me think, what about a web-based application to do this format conversion? That's how I found these three amazing tools based at the National Cancer Institute's CADD Chemoinformatics group.... Read more »
Weininger, D. (1988) SMILES, a chemical language and information system. 1. Introduction to methodology and encoding rules. Journal of Chemical Information and Modeling, 28(1), 31-36. DOI: 10.1021/ci00057a005
- March 13, 2013
- 05:30 PM
- 95 views
What to do with so many models?
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
I have encountered this issue while working with structures in PDB that are solved using Nuclear Magnetic Resonance (NMR). Which model should I choose among the 10 or 20 models? As a general rule of thumb, Model 1 is usually taken for further analysis and consideration. Is that rule universal for all NMR structures? Some studies on this topic makes it interesting to revisit.... Read more »
Furnham, N., Blundell, T., DePristo, M., & Terwilliger, T. (2006) Is one solution good enough?. Nature Structural , 13(3), 184-185. DOI: 10.1038/nsmb0306-184
Sutcliffe, M. (1993) Representing an ensemble of NMR-derived protein structures by a single structure. Protein Science, 2(6), 936-944. DOI: 10.1002/pro.5560020607
MacArthur, M., & Thornton, J. (1993) Conformational analysis of protein structures derived from NMR data. Proteins: Structure, Function, and Genetics, 17(3), 232-251. DOI: 10.1002/prot.340170303
Laskowski, R., Rullmann, J., MacArthur, M., Kaptein, R., & Thornton, J. (1996) AQUA and PROCHECK-NMR: Programs for checking the quality of protein structures solved by NMR. Journal of Biomolecular NMR, 8(4). DOI: 10.1007/BF00228148
Sikic K, & Carugo O. (2009) CARON--average RMSD of NMR structure ensembles. Bioinformation, 4(3), 132-3. PMID: 20198187
Gottstein, D., Kirchner, D., & Güntert, P. (2012) Simultaneous single-structure and bundle representation of protein NMR structures in torsion angle space. Journal of Biomolecular NMR, 52(4), 351-364. DOI: 10.1007/s10858-012-9615-8
- March 7, 2013
- 05:10 PM
- 155 views
Quick and easy animated pictures of proteins
by Ragothamanyennamalli in Getting to know Structural Bioinformatics
So, here is an imaginary situation. You have a deadline to achieve and have minimal internet to reach the goal. Few hours before the deadline, your PI asks if you can send him a movie of the protein of interest in PyMOL. He specifies that the movie show the protein rotating, the active site and the ligand bound with it in surface representation, ligands as ball-and-stick, etc. He has a grant review presentation tomorrow and needs it asap.
You finish the movie and realize that to make a good i........ Read more »
Porollo, A., & Meller, J. (2007) Versatile annotation and publication quality visualization of protein complexes using POLYVIEW-3D. BMC Bioinformatics, 8(1), 316. DOI: 10.1186/1471-2105-8-316
- January 3, 2013
- 03:45 PM
- 146 views
Multiple Structure Alignment
by RagothamanYennamalli in Getting to know Structural Bioinformatics
Just like Multiple Sequence Alignment (MSA) tools there is a definite need for multiple structure alignment tools. For a long time, I was a big fan of Combinatorial Extension (CE)'s Multiple Structure Alignment (MStA) on their web server. Now, it is no longer maintained and has become a legacy. The good thing about it was you can do pairwise, database search, and MStA by either giving the PDB id or uploading a file.... Read more »
Marc A. Marti-Renom, Emidio Capriotti, Ilya N. Shindyalov, and Philip E. Bourne. (2009) Structure Comparison and Alignment. Structural Bioinformatics. DOI: 10.1002/0471721204.ch16
- November 29, 2012
- 02:00 PM
- 183 views
Molecular Dynamics and Pest Control
by RagothamanYennamalli in Getting to know Structural Bioinformatics
How can Molecular Dynamics help in controlling pests? Well, insects have something called resistant to dieldrin receptor or RDL receptors. These are part of a big family of receptors called Cys-loop receptors. Insecticides invariably bind to these receptors and in turn affect the neurotransmission in the pest. So, it becomes imperative to understand these receptors in order to develop and rationally design insecticides that are highly specific.... Read more »
Ashby, J., McGonigle, I., Price, K., Cohen, N., Comitani, F., Dougherty, D., Molteni, C., & Lummis, S. (2012) GABA Binding to an Insect GABA Receptor: A Molecular Dynamics and Mutagenesis Study. Biophysical Journal, 103(10), 2071-2081. DOI: 10.1016/j.bpj.2012.10.016
- October 30, 2012
- 12:00 PM
- 218 views
What’s happening in the area of protein folding?
by RagothamanYennamalli in Getting to know Structural Bioinformatics
post about special feature on protein folding in PNAS, October 2012 issue... Read more »
Service, R. (2008) Problem Solved* (*sort of). Science, 321(5890), 784-786. DOI: 10.1126/science.321.5890.784
Wolynes, P., Eaton, W., & Fersht, A. (2012) From the Cover: Chemical physics of protein folding. Proceedings of the National Academy of Sciences, 109(44), 17770-17771. DOI: 10.1073/pnas.1215733109
- October 30, 2012
- 05:50 AM
- 247 views
Protein-Ligand Interactions
by RagothamanYennamalli in Getting to know Structural Bioinformatics
2D representations for protein-ligand interactions... Read more »
Wallace AC, Laskowski RA, & Thornton JM. (1995) LIGPLOT: a program to generate schematic diagrams of protein-ligand interactions. Protein engineering, 8(2), 127-34. PMID: 7630882
Stierand, K., & Rarey, M. (2010) Drawing the PDB: Protein−Ligand Complexes in Two Dimensions. ACS Medicinal Chemistry Letters, 1(9), 540-545. DOI: 10.1021/ml100164p
Durrant, J., & McCammon, J. (2011) BINANA: A novel algorithm for ligand-binding characterization. Journal of Molecular Graphics and Modelling, 29(6), 888-893. DOI: 10.1016/j.jmgm.2011.01.004
- October 16, 2012
- 02:00 PM
- 138 views
Enzyme specificity – It may all be in the loop
by RagothamanYennamalli in Getting to know Structural Bioinformatics
Post about the distinguishing omega loop that gives rise to substrate specificity in cellulases.... Read more »
Sukharnikov, L., Alahuhta, M., Brunecky, R., Upadhyay, A., Himmel, M., Lunin, V., & Zhulin, I. (2012) Sequence, structure, and evolution of cellulases in the glycoside hydrolase family 48. Journal of Biological Chemistry. DOI: 10.1074/jbc.M112.405720
- October 11, 2012
- 04:00 PM
- 129 views
Sequence and Dynamics go hand in hand
by RagothamanYennamalli in Getting to know Structural Bioinformatics
Post about a paper that says those residues in a protein that show least mobility (relative to others in the same protein) are most likely to be conserved... Read more »
Liu, Y., & Bahar, I. (2012) Sequence Evolution Correlates with Structural Dynamics. Molecular Biology and Evolution, 29(9), 2253-2263. DOI: 10.1093/molbev/mss097
- October 11, 2012
- 02:00 PM
- 134 views
The Anatomy and Taxonomy of Protein Structure
by RagothamanYennamalli in Getting to know Structural Bioinformatics
An early post on seminal work by Jane Richardson... Read more »
Jane S. Richardson. (1981) The Anatomy and Taxonomy of Protein Structure. Advances in Protein Chemistry, 167-339. DOI: 10.1016/S0065-3233(08)60520-3
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