There are other databases that deal with human proteome (e.g. BioGRID, BIND, DIP, HPRD, IntAct, MINT, MIPS, PDZBase and Reactome). Each database has its own style of presenting the data. It is a difficult task for most investigators to compare the voluminous data from these databases in order to conclude strengths and weaknesses of each database. Mathivanan and colleagues <ref name="pmid17254303">{{cite journal|author=Mathivanan S |title=An evaluation of human protein-protein interaction data in the public ___domain |journal=[[BMC Bioinformatics]] |volume=7 Suppl 5 |issue= |pages=S19 |year=2006 |pmid=17254303 |pmc=1764475 |doi=10.1186/1471-2105-7-S5-S19 |url=https://web.archive.org/web/20110629023316/http://www.biomedcentral.com/1471-2105/7/S5/S19 |name-list-format=vanc |author2=Periaswamy B |author3=Gandhi TK |display-authors=3 |last4=Kandasamy |first4=Kumaran |last5=Suresh |first5=Shubha |last6=Mohmood |first6=Riaz |last7=Ramachandra |first7=YL |last8=Pandey |first8=Akhilesh |deadurl=yes |archiveurl=https://web.archive.org/web/20110629023316/http://www.biomedcentral.com/1471-2105/7/S5/S19 |archivedate=June 29, 2011 }}</ref> tried to address this issue while analyzing protein data by asking various questions. This analysis will help biologists to choose among these databases based on their needs.