PMID- 10639192 OWN - NLM STAT- MEDLINE DCOM- 20000223 LR - 20190915 IS - 0270-4137 (Print) IS - 0270-4137 (Linking) VI - 42 IP - 3 DP - 2000 Feb 15 TI - Crystal structure of human prostatic acid phosphatase . PG - 211-8 AB - BACKGROUND: Prostatic acid phosphatase (hPAP) is a major product of the human prostate gland, yet its physiological substrate remains unknown. METHODS: Human PAP, purified from semen, was crystallized using polyethylene glycol as the precipitant and its crystal structure was determined using X-ray diffraction. The structure was refined at 3.1 A resolution to R = 16% and R(free) = 27%. RESULTS: The structure of hPAP is similar to that of other known histidine phosphatases, and the positions of its catalytic residues are conserved. N-linked carbohydrates are present at each of the possible glycosylation sites. It appears that high-mannose chains are attached to Asn 62 and Asp 301, while complex chains are at Asn 188. CONCLUSIONS: The similarity of the three-dimensional structures of rat PAP and human PAP indicates that the mechanistic analyses of the catalytic mechanism proposed for the rat enzyme should be extended to the human enzyme without reservations. The crystallographic data allowed the correlation of attachment sites of N-linked carbohydrate chains with a given carbohydrate type. The carbohydrates of the protein produced in the prostate cells and in the baculovirus expression system appear to differ at the site of complex carbohydrates attachment. CI - Copyright 2000 Wiley-Liss, Inc. FAU - Jakob, C G AU - Jakob CG AD - Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA. FAU - Lewinski, K AU - Lewinski K FAU - Kuciel, R AU - Kuciel R FAU - Ostrowski, W AU - Ostrowski W FAU - Lebioda, L AU - Lebioda L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Prostate JT - The Prostate JID - 8101368 RN - 0 (Carbohydrates) RN - EC 3.1.3.2 (Acid Phosphatase) SB - IM MH - Acid Phosphatase/*chemistry/metabolism MH - Binding Sites MH - Carbohydrates/chemistry MH - Crystallography, X-Ray MH - Glycosylation MH - Humans MH - Male MH - Models, Molecular MH - Prostate/*enzymology MH - Protein Conformation MH - Protein Processing, Post-Translational MH - Semen/enzymology EDAT- 2000/01/19 09:00 MHDA- 2000/02/26 09:00 CRDT- 2000/01/19 09:00 PHST- 2000/01/19 09:00 [pubmed] PHST- 2000/02/26 09:00 [medline] PHST- 2000/01/19 09:00 [entrez] AID - 10.1002/(SICI)1097-0045(20000215)42:3<211::AID-PROS7>3.0.CO;2-U [pii] AID - 10.1002/(sici)1097-0045(20000215)42:3<211::aid-pros7>3.0.co;2-u [doi] PST - ppublish SO - Prostate. 2000 Feb 15;42(3):211-8. doi: 10.1002/(sici)1097-0045(20000215)42:3<211::aid-pros7>3.0.co;2-u.