diff --git a/src/utils/proteinstore.cpp b/src/utils/proteinstore.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ba8ff7df31db6aea399ad73eb4e848b36712b028
--- /dev/null
+++ b/src/utils/proteinstore.cpp
@@ -0,0 +1,30 @@
+/**
+ * \file utils/proteinstore.cpp
+ * \date 23/3/2017
+ * \author Olivier Langella
+ * \brief store unique version of proteins
+ */
+
+/*******************************************************************************
+* Copyright (c) 2017 Olivier Langella <Olivier.Langella@u-psud.fr>.
+*
+* This file is part of XTPcpp.
+*
+*     XTPcpp is free software: you can redistribute it and/or modify
+*     it under the terms of the GNU General Public License as published by
+*     the Free Software Foundation, either version 3 of the License, or
+*     (at your option) any later version.
+*
+*     XTPcpp is distributed in the hope that it will be useful,
+*     but WITHOUT ANY WARRANTY; without even the implied warranty of
+*     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*     GNU General Public License for more details.
+*
+*     You should have received a copy of the GNU General Public License
+*     along with XTPcpp.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Contributors:
+*     Olivier Langella <Olivier.Langella@u-psud.fr> - initial API and implementation
+******************************************************************************/
+
+#include "proteinstore.h"
diff --git a/src/utils/proteinstore.h b/src/utils/proteinstore.h
new file mode 100644
index 0000000000000000000000000000000000000000..eec6afdb62796ff17b1332c8e1fe4abd4a9e2b8a
--- /dev/null
+++ b/src/utils/proteinstore.h
@@ -0,0 +1,39 @@
+/**
+ * \file utils/proteinstore.h
+ * \date 23/3/2017
+ * \author Olivier Langella
+ * \brief store unique version of proteins
+ */
+
+
+/*******************************************************************************
+* Copyright (c) 2017 Olivier Langella <Olivier.Langella@u-psud.fr>.
+*
+* This file is part of XTPcpp.
+*
+*     XTPcpp is free software: you can redistribute it and/or modify
+*     it under the terms of the GNU General Public License as published by
+*     the Free Software Foundation, either version 3 of the License, or
+*     (at your option) any later version.
+*
+*     XTPcpp is distributed in the hope that it will be useful,
+*     but WITHOUT ANY WARRANTY; without even the implied warranty of
+*     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*     GNU General Public License for more details.
+*
+*     You should have received a copy of the GNU General Public License
+*     along with XTPcpp.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Contributors:
+*     Olivier Langella <Olivier.Langella@u-psud.fr> - initial API and implementation
+******************************************************************************/
+
+
+#ifndef PROTEINSTORE_H
+#define PROTEINSTORE_H
+
+class ProteinStore
+{
+};
+
+#endif // PROTEINSTORE_H