PMID- 25243114 OWN - NLM STAT- MEDLINE DCOM- 20160515 LR - 20211021 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2014 DP - 2014 TI - Characterisation of potential antidiabetic-related proteins from Pleurotus pulmonarius (Fr.) Quel. (grey oyster mushroom) by MALDI-TOF/TOF mass spectrometry. PG - 131607 LID - 10.1155/2014/131607 [doi] LID - 131607 AB - Pleurotus pulmonarius has been reported to have a potent remedial effect on diabetic property and considered to be an alternative for type 2 diabetes mellitus treatment. This study aimed to investigate the antidiabetic properties of ammonium sulphate precipitated protein fractions from P. pulmonarius basidiocarps. Preliminary results demonstrated that 30% (NH4)2SO4 precipitated fraction (F30) inhibited Saccharomyces cerevisiae alpha-glucosidase activity (24.18%), and 100% (NH4)2SO4 precipitated fraction (F100) inhibited porcine pancreatic alpha-amylase activity (41.80%). Following RP-HPLC purification, peak 3 from F30 fraction demonstrated inhibition towards alpha-glucosidase at the same time with meagre inhibition towards alpha-amylase activity. Characterisation of proteins using MALDI-TOF/TOF MS demonstrated the presence of four different proteins, which could be implicated in the regulation of blood glucose level via various mechanisms. Therefore, this study revealed the presence of four antidiabetic-related proteins which are profilin-like protein, glyceraldehyde-3-phosphate dehydrogenase-like protein, trehalose phosphorylase-like (TP-like) protein, and catalase-like protein. Hence, P. pulmonarius basidiocarps have high potential in lowering blood glucose level, reducing insulin resistance and vascular complications. FAU - Wahab, Nurul Azwa Abd AU - Wahab NA AD - Mushroom Research Centre, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia. FAU - Abdullah, Noorlidah AU - Abdullah N AD - Mushroom Research Centre, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia. FAU - Aminudin, Norhaniza AU - Aminudin N AD - Mushroom Research Centre, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia ; University of Malaya Centre for Proteomics Research, University of Malaya, 50603 Kuala Lumpur, Malaysia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140828 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (Fungal Proteins) RN - 0 (Hypoglycemic Agents) RN - EC 3.2.1.1 (alpha-Amylases) RN - EC 3.2.1.20 (alpha-Glucosidases) SB - IM MH - Chromatography, High Pressure Liquid MH - Chromatography, Reverse-Phase MH - Electrophoresis, Polyacrylamide Gel MH - Fungal Proteins/*pharmacology MH - Hypoglycemic Agents/*pharmacology MH - Pleurotus/*chemistry MH - Silver Staining MH - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/*methods MH - alpha-Amylases/metabolism MH - alpha-Glucosidases/metabolism PMC - PMC4163432 EDAT- 2014/09/23 06:00 MHDA- 2016/05/18 06:00 PMCR- 2014/08/28 CRDT- 2014/09/23 06:00 PHST- 2014/02/09 00:00 [received] PHST- 2014/06/04 00:00 [revised] PHST- 2014/07/22 00:00 [accepted] PHST- 2014/09/23 06:00 [entrez] PHST- 2014/09/23 06:00 [pubmed] PHST- 2016/05/18 06:00 [medline] PHST- 2014/08/28 00:00 [pmc-release] AID - 10.1155/2014/131607 [doi] PST - ppublish SO - Biomed Res Int. 2014;2014:131607. doi: 10.1155/2014/131607. Epub 2014 Aug 28.