Databases which are useful for proteomic analysis of human kidney tissue and 
urine have been discussed in this article. Integration of the gene-centric and 
protein-centric general databases with those of human kidney tissue and urine 
proteomes may open a new window for research in nephrology. Proteins present in 
the kidney and urine provide basic tools for investigation of kidney function 
and disease. By comparing such databases between the healthy and diseased 
populations, we may be able to identify the following: proteins involved in the 
development of renal disease, proteins involved in progression of CKD, or new 
biomarker candidate proteins for either the development of renal disease or the 
progression of CKD.