ID   APCE_GALSU              Reviewed;         863 AA.
AC   P35911;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 1.
DT   03-AUG-2022, entry version 85.
DE   RecName: Full=Phycobiliprotein ApcE;
DE            EC=4.-.-.-;
DE   AltName: Full=Anchor polypeptide;
DE   AltName: Full=PBS-anchor protein;
DE   AltName: Full=Phycobilisome linker polypeptide;
GN   Name=apcE;
OS   Galdieria sulphuraria (Red alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Galdieria.
OX   NCBI_TaxID=130081;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=14-1-1 / Isolate 107.79/Goettingen;
RA   Kostrzewa M., Zetsche K.;
RL   Submitted (AUG-1993) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: This protein is postulated to act both as terminal energy
CC       acceptor and as a linker polypeptide that stabilizes the phycobilisome
CC       architecture. May have intrinsic bilin lyase activity (By similarity).
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal side
CC       {ECO:0000250}.
CC   -!- PTM: Contains one covalently linked bilin chromophore. This protein
CC       autochromophorylates (Potential). {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the phycobilisome linker protein family.
CC       {ECO:0000255|PROSITE-ProRule:PRU00775}.
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DR   EMBL; X74548; CAA52640.1; -; Genomic_DNA.
DR   PIR; S37088; S37088.
DR   AlphaFoldDB; P35911; -.
DR   SMR; P35911; -.
DR   STRING; 130081.XP_005705029.1; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0030089; C:phycobilisome; IEA:UniProtKB-KW.
DR   GO; GO:0016829; F:lyase activity; IEA:UniProtKB-KW.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.3130.20; -; 3.
DR   Gene3D; 1.10.490.20; -; 1.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR001297; PBS_linker_dom.
DR   InterPro; IPR038255; PBS_linker_sf.
DR   InterPro; IPR012128; Phycobilisome_asu/bsu.
DR   InterPro; IPR038719; Phycobilisome_asu/bsu_sf.
DR   Pfam; PF00427; PBS_linker_poly; 3.
DR   Pfam; PF00502; Phycobilisome; 2.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   PROSITE; PS51445; PBS_LINKER; 3.
PE   3: Inferred from homology;
KW   Antenna complex; Bile pigment; Chloroplast; Chromophore;
KW   Electron transport; Lyase; Membrane; Photosynthesis; Phycobilisome;
KW   Plastid; Repeat; Thylakoid; Transport.
FT   CHAIN           1..863
FT                   /note="Phycobiliprotein ApcE"
FT                   /id="PRO_0000199261"
FT   DOMAIN          235..414
FT                   /note="PBS-linker 1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00775"
FT   DOMAIN          473..652
FT                   /note="PBS-linker 2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00775"
FT   DOMAIN          671..852
FT                   /note="PBS-linker 3"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00775"
FT   BINDING         178
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   863 AA;  99758 MW;  4D760A421E16A40A CRC64;
     MTIRKNSGLV PINIQLYKTT PIQTILQAEQ QDRFLQPAEL SQLLSYMKSG VLRLEIAETL
     SRNSTNIVNA ASNRIFVGGS PLSYLEKPED SIDISSIDTK NTKFSFSNIF KNLFSNEDSI
     PAGFKPITIV KYGSNKMRKS LRDLDWFLRY LSYAIIIGDP NILAVNIKGL REIIENACST
     AATIVALRTM KRTCIKLFSS NPEAESIVNQ YFNVIIQEFE APSLSDRIRK RNSADLQGLT
     LPQTYFLSSS TQFKYAMKPN LSVEEKNEII RAAYRQVFER DIVKAYSLSL TKMESRVKIG
     QISMKEFIRA LGKSSLYRKE FFDSFSNSRV VELAFRHFLG RGISSLEEFQ KYFAIVSQEG
     LGGLVDTLIN SKEYSDYFGE ETVPYLRSLG EEAQECRNWG VQIKLFNYSA RFQKKPQFIT
     LFKDYQTPLP DQHPYGHSND PLAIQFGAIF SKKTSTAFVN KDVRRILIYK GAPIENQLSR
     PLKLNAYKEL NSYNLQIIKQ SDNLTENIIR ACYLRVFGRN PYTEEKLILQ PIENQFRDKC
     ISIKELIRAL SKSNLFRKLY WTPFYVCKSI EYIHIRLLGR PTYGRKEINN YFNISAQGGF
     YKLIDAIIDS EEYSQVFGDN IIPYERYLTP YNLSLGTLRV SSIREKFKKL QPPVDKKFVE
     LGRVKEIRSK NNIILKLNQG VSKRREQTVI FARHINNSQS SLEQIIKAAY RQVFERDIDP
     YTIGREFYSI ETLFYAGSLS VKEFIEHLGQ SELYRKEFFE PYPNTKVIEL GTKHFLGRAP
     KDQGEIRLYN QILRSQGLKS FVKSLINSQE YIEIFGDSIV PYRRFPTLPA GTFPNTDILY
     KNLTKQKFFI LMPSYKNTKL LSV