To provide polypeptide or the like that is useful as a malaria vaccine antigen.SOLUTION: There are provided polypeptide that consists of any amino acid sequence of the followings, and malaria vaccine containing the polypeptide: (a) an amino acid sequence which consists of a specific sequence； (b) an amino acid sequence in which 1 to 10, preferably 1 to 5, further preferably 1, 2 or 3 amino acids out of the amino acid sequence which consists of a specific sequence are substituted, deleted, added, or inserted； and (c) an amino acid sequence having a sequence identity of 95% or more, further preferably 97% or more, more preferably 99% or more with the amino acid sequence which consists of a specific sequence.SELECTED DRAWING: Figure 1【課題】マラリアワクチン抗原として有用なポリペプチド等の提供。【解決手段】以下のいずれかのアミノ酸配列からなるポリペプチド、および前記ポリペプチドを含むマラリアワクチン。（ａ）特定な配列からなるアミノ酸配列、（ｂ）特定な配列からなるアミノ酸配列の１～１０個、好ましくは１～５個、更に好ましくは１、２もしくは３個のアミノ酸が置換、欠失、付加又は挿入されたアミノ酸配列、及び（ｃ）特定な配列からなるアミノ酸配列と９５％以上、更に好ましくは９７％以上、より好ましくは９９％以上の配列同一性を有するアミノ酸配列【選択図】図１
