Fingerprint Similarity Searches in MongoDB

A few of my recent projects have involved the use of MongoDB, primarily for the ease afforded by a schemaless environment. Sometime back I had investigated the use of MongoDB to store chemical structure data, though those efforts did not actually query structures per se; instead they queried for precomputed numeric or text properties. So […]

A Quick Look at the GSK Malaria Dataset

A few days ago, GSK released an approximately 13,000 member compound library (using the CC0 license) that had been tested for activity against P. falciparum. The structures and data have been deposited into ChEMBL and a paper is available, that describes the screening project and results. Following this announcement there was a thread on FriendFeed, where […]

New Version of rpubchem

Version 1.4.3 of rpubchem is out on CRAN. There’s some minor code cleanups and also a new function called which allows you to get assay ID’s based on whether they contain a compound (either as an active, inactive, discrepant or just tested). This uses PUG to perform the query, so can be a bit […]

PubChem Bioassay Annotation Poster

Sometime back I had described some work on the automated annotation of PubChem bioassays. The lack of annotations on the assays can make it difficult to integrate with other biological resources. Ideally, the bioassays would be manually annotated – however, it’s not a very exciting job. So, collaborating with Patrick Ruch and Julien Gobeill, we […]

Annotating Bioassays

I’ve been working for some time with the PubChem Bioassay collection – a set of 1293 assays that cover a range of techniques (enzymatic, phenotypic etc.), targets and sizes (from 20 molecules to 200,000 molecules). In addition, some assays are primary, high-throughput assays whereas a number of them are smaller, confirmatory assays. While an extremely […]