title: [Establishment of the two-dimensional gel electrophoretic protein map of the human sperm head].
abstract: OBJECTIVE
  To construct the two-dimensional electrophoretic (2-DE) protein map of the human sperm head.
  
  
  METHODS
  Protein extracts of the normal human sperm and sperm head were loaded on an 18 cm immobilized pH gradients (IPG) strip holder and separated with isoelectric focusing electrophoresis as the first dimension, and then with upright SDS-PAGE as the second. Different protein spots between them were compared with Image Master 3.0, and so were the maps of method I with Urea/Thiourea/Guanidine HCl and method II with Kit/Guanidine HCl.
  
  
  RESULTS
  Of the whole-sperm proteome, 802 protein spots were obtained by method I, and 797 by method II. Among them, distribution patterns of 492 spots were the same. A sperm protein map was constructed with 1107 protein spots after the interaction of the spots obtained by both the methods. Of the sperm-head proteome, 428 protein spots were obtained, all found in the whole-sperm protein map after comparison.
  
  
  CONCLUSIONS
  Both the methods could be complementarily used to construct a sperm protein map, and the map could serve as a model for the establishment of the sperm protein profile.
authors.affiliation: Research Institute of Reproduction and ES Cells, Central South University, Changsha, Hunan 410078, China.
authors.forename: Yumei
authors.initials: Y
authors.lastname: Tan
authors.forename: Liqing
authors.initials: L
authors.lastname: Fan
authors.forename: Keli
authors.initials: K
authors.lastname: Luo
authors.forename: Wenbing
authors.initials: W
authors.lastname: Zhu
authors.forename: Guangxiu
authors.initials: G
authors.lastname: Lu
mesh_terms: D015180:Electrophoresis, Gel, Two-Dimensional / Q000379:methods*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D011506:Proteins / Q000032:analysis*; D040901:Proteomics / Q000379:methods; D013077:Sperm Head / Q000737:chemistry*
chemical_list: D011506:Proteins