/usr/include/Bpp/Seq/AlphabetIndex/ is in libbpp-seq-dev 2.1.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/Bpp/Seq/AlphabetIndex/AAChargeIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AAChenGuHuangHydrophobicityIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AAChouFasmanAHelixIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AAChouFasmanBSheetIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AAChouFasmanTurnIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AAIndex1Entry.h
/usr/include/Bpp/Seq/AlphabetIndex/AAIndex2Entry.h
/usr/include/Bpp/Seq/AlphabetIndex/AAMassIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AASEA1030Index.h
/usr/include/Bpp/Seq/AlphabetIndex/AASEAInf10Index.h
/usr/include/Bpp/Seq/AlphabetIndex/AASEASup30Index.h
/usr/include/Bpp/Seq/AlphabetIndex/AASurfaceIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AAVolumeIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/AlphabetIndex1.h
/usr/include/Bpp/Seq/AlphabetIndex/AlphabetIndex2.h
/usr/include/Bpp/Seq/AlphabetIndex/BLOSUM50.h
/usr/include/Bpp/Seq/AlphabetIndex/DefaultNucleotideScore.h
/usr/include/Bpp/Seq/AlphabetIndex/GranthamAAChemicalDistance.h
/usr/include/Bpp/Seq/AlphabetIndex/GranthamAAPolarityIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/GranthamAAVolumeIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/KleinAANetChargeIndex.h
/usr/include/Bpp/Seq/AlphabetIndex/MiyataAAChemicalDistance.h
/usr/include/Bpp/Seq/AlphabetIndex/SimpleIndexDistance.h
/usr/include/Bpp/Seq/AlphabetIndex/SimpleScore.h