PMID- 33143610 OWN - NLM STAT- MEDLINE DCOM- 20210701 LR - 20210701 IS - 1875-5305 (Electronic) IS - 0929-8665 (Linking) VI - 28 IP - 5 DP - 2021 TI - A Novel Reversibly Glycosylated Polypeptide-2 of Bee Pollen from Rape (Brassica napus L.): Purification and Characterization. PG - 543-553 LID - 10.2174/0929866527666201103161302 [doi] AB - BACKGROUND: Reversibly glycosylated polypeptide (RGP), a kind of hydrosoluble and plasmodesmal-associated protein found in plants, plays a crucial role in the development of pollen. OBJECTIVE: A novel RGP 2 was isolated and identified from rape (Brassica napus L.) bee pollen. METHODS: RGP2 was isolated and purified by ion-exchange column and gel filtration chromatography, and characterized by MALDI-TOF-MS, LC-MS, immunological histological chemistry, and transmission electron microscope. RESULTS: Our results indicated that the RGP2 is an acidic protein (pI=5.46) with the molecular weight 42388 Da. It contained 17 kinds of amino acids, among which aspartic acid had the highest amount (71.56 mg/g). Homologous alignment of amino acid sequence results showed that RGP2 was 80.33%, 85.02%, 86.06%, and 88.93% identical to Arabidopsis thaliana RGP2 (AtRGP2), Oryza sativa RGP (OsRGP), Triticum aestivum RGP (TaRGP), and Zea maize RGP (ZmRGP), respectively. The localization results showed that RGP2 in rape anther existed in exine and intine of anther cells of rape flower by immunological histological chemistry and the subcellular localization identified that RGP2 appeared around the Golgi apparatus in cytoplasm by transmission electron microscope. CONCLUSION: RGP2 has a highly conserved sequence of amino acid residues and potential glycosylation sites. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.net. FAU - Zhang, Qi AU - Zhang Q AD - College of Food Science and Engineering, Northwest University, Xi'an, China. FAU - Sun, Tian AU - Sun T AD - College of Food Science and Engineering, Northwest University, Xi'an, China. FAU - Tuo, Xingxia AU - Tuo X AD - College of Public Health, School of Medicine, Xi'an Jiaotong University, Xi'an, China. FAU - Li, Yujin AU - Li Y AD - College of Food Science and Engineering, Ocean University of China, Qingdao, China. FAU - Yang, Haixia AU - Yang H AD - College of Public Health, School of Medicine, Xi'an Jiaotong University, Xi'an, China. FAU - Deng, Jianjun AU - Deng J AD - School of Chemical Engineering, Northwest University, Xi'an, China. LA - eng GR - 21978229, 21676212/National Natural Science Foundation of China/ GR - 2019NY-140/Key Research and Development Program of Shaanxi/ GR - 2017BSHTDZZ14/Shaanxi Postdoctoral Science Foundation/ PT - Journal Article PL - Netherlands TA - Protein Pept Lett JT - Protein and peptide letters JID - 9441434 RN - 0 (Plant Proteins) RN - EC 2.4.1.- (Glucosyltransferases) SB - IM MH - Animals MH - Bees MH - Brassica napus/*chemistry/genetics MH - Glucosyltransferases/*chemistry/genetics MH - Glycosylation MH - Plant Proteins/*chemistry/genetics MH - Pollen/*chemistry/genetics OTO - NOTNLM OT - MALDI-TOF-MS OT - Reversibly glycosylated polypeptide OT - Transmission Electron Microscope OT - immunological histological chemistry OT - peptide mass fingerprinting OT - rape bee pollen EDAT- 2020/11/05 06:00 MHDA- 2021/07/02 06:00 CRDT- 2020/11/04 05:30 PHST- 2020/05/15 00:00 [received] PHST- 2020/09/15 00:00 [revised] PHST- 2020/09/15 00:00 [accepted] PHST- 2020/11/05 06:00 [pubmed] PHST- 2021/07/02 06:00 [medline] PHST- 2020/11/04 05:30 [entrez] AID - PPL-EPUB-111152 [pii] AID - 10.2174/0929866527666201103161302 [doi] PST - ppublish SO - Protein Pept Lett. 2021;28(5):543-553. doi: 10.2174/0929866527666201103161302.