Format

Send to

Choose Destination

Two step procedure for purification of enzymatically active prostate-specific antigen from seminal plasma.

Author information

1
Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA.

Abstract

The role of prostate-specific antigen (PSA) during the onset of prostate cancer and subsequent tumor growth and metastasis is not well understood. We have developed a simple two step procedure, based on principles of hydrophobic charge-induction chromatography and molecular size chromatography to provide pure free-PSA (f-PSA) preparation that is free from all other known PSA complexes as well as human kallikrein 2 (hK2). The overall recovery of f-PSA is 72%. The isolated f-PSA consists of three known isoforms that corresponds to pI of 6.2, 6.4 and 7.2. f-PSA is enzymatically active and its enzymatic activity can be effectively neutralized by a serine protease inhibitor.

PMID:
15556523
DOI:
10.1016/j.jchromb.2004.09.014
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center