Acid Phosphatase 5, Tartrate Resistant, Tartrate-Resistant Acid ATPase, Human Purple Acid Phosphatase, EC 188.8.131.52, TrATPase, Tartrate-Resistant Acid Phosphatase Type 5, Tartrate-Resistant Acid Phosphatase 5a, Tartrate-Resistant Acid Phosphatase 5b, Tartrate-Resistant Acid Phosphatase, Type 5 Acid Phosphatase, TRACP5a, TRACP5b, TR-AP, HPAP, TRAP, ACP5.
Tartrate-resistant acid phosphatase type 5 (ACP5) is involved in osteopontin and bone sialoprotein dephosphorylation. ACP5 is an iron containing glycoprotein which catalyzes the conversion of orthophosphoric monoester to alcohol and orthophosphate. ACP5 expression seems to increase in some pathological states such as Gaucher and Hodgkin diseases, the hairy cell, the B-cell, and the T-cell leukemias. ACP5 is the most basic of the acid phosphatases and is the only form not inhibited by L(+)-tartrate.
ACP5 is purified by proprietary chromatographic techniques.
ACP5 protein solution (0.5mg/ml) contains Phosphate Buffered Saline (pH 7.4) and 10% glycerol.
Greater than 90.0% as determined by SDS-PAGE.
Amino acid sequence
ATPALRFVAV GDWGGVPNAP FHTAREMANA KEIARTVQIL GADFILSLGD NFYFTGVQDI NDKRFQETFE DVFSDRSLRK VPWYVLAGNH DHLGNVSAQI AYSKISKRWN FPSPFYRLHF KIPQTNVSVA IFMLDTVTLC GNSDDFLSQQ PERPRDVKLA RTQLSWLKKQ LAAAREDYVL VAGHYPVWSI AEHGPTHCLV KQLRPLLATY GVTAYLCGHD HNLQYLQDEN GVGYVLSGAG NFMDPSKRHQ RKVPNGYLRF HYGTEDSLGG FAYVEISSKE MTVTYIEASG KSLFKTRLPR RARP.
Specific activity is >10,000 units/mg, and is defined as the amount of enzyme that hydrolyze 1.0 nmoles of p-nitrophenyl phosphate (pNPP) per minute at pH 5.0 at 37°C.