ID   FCPA_MACPY              Reviewed;         217 AA.
AC   Q40297;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1997, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=Fucoxanthin-chlorophyll a-c binding protein A, chloroplastic;
DE   Flags: Precursor;
GN   Name=FCPA;
OS   Macrocystis pyrifera (Giant kelp) (Fucus pyrifer).
OC   Eukaryota; Sar; Stramenopiles; Ochrophyta; PX clade; Phaeophyceae;
OC   Laminariales; Laminariaceae; Macrocystis.
OX   NCBI_TaxID=35122;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=MAL-1;
RX   PubMed=7891659; DOI=10.1007/bf00290449;
RA   Apt K.E., Clendennen S.K., Powers D.A., Grossman A.R.;
RT   "The gene family encoding the fucoxanthin chlorophyll proteins from the
RT   brown alga Macrocystis pyrifera.";
RL   Mol. Gen. Genet. 246:455-464(1995).
CC   -!- FUNCTION: The light-harvesting complex (LHC) functions as a light
CC       receptor, it captures and delivers excitation energy to photosystems
CC       with which it is closely associated. Energy is transferred from the
CC       carotenoid and chlorophyll C (or B) to chlorophyll A and the
CC       photosynthetic reaction centers where it is used to synthesize ATP and
CC       reducing power.
CC   -!- SUBUNIT: The LHC complex of chromophytic algae is composed of
CC       fucoxanthin, chlorophyll A and C bound non-covalently by fucoxanthin
CC       chlorophyll proteins (FCPs). The ratio of pigments in this LHC is;
CC       fucoxanthin: chlorophyll C: chlorophyll A; (0.6-1): (0.1-0.3): (1).
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Multi-
CC       pass membrane protein. Note=FCPs are probably transported across the
CC       endoplasmic reticulum membranes that surround the plastid via a signal
CC       peptide, followed by translocation across the thylakoid membrane via a
CC       transit peptide.
CC   -!- INDUCTION: Levels are increased twofold when transferred from high to
CC       low blue or white light.
CC   -!- SIMILARITY: Belongs to the fucoxanthin chlorophyll protein family.
CC       {ECO:0000305}.
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DR   EMBL; U10065; AAC49018.1; -; mRNA.
DR   PIR; S53820; S53820.
DR   AlphaFoldDB; Q40297; -.
DR   SMR; Q40297; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0030076; C:light-harvesting complex; IEA:UniProtKB-KW.
DR   GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR   GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0009765; P:photosynthesis, light harvesting; IEA:InterPro.
DR   InterPro; IPR001344; Chloro_AB-bd_pln.
DR   InterPro; IPR022796; Chloroa_b-bind.
DR   PANTHER; PTHR21649; PTHR21649; 1.
DR   Pfam; PF00504; Chloroa_b-bind; 1.
PE   2: Evidence at transcript level;
KW   Chlorophyll; Chloroplast; Chromophore; Light-harvesting polypeptide;
KW   Membrane; Photosynthesis; Photosystem II; Plastid; Thylakoid;
KW   Transit peptide; Transmembrane; Transmembrane helix.
FT   TRANSIT         1..39
FT                   /note="Chloroplast"
FT                   /evidence="ECO:0000305"
FT   CHAIN           40..217
FT                   /note="Fucoxanthin-chlorophyll a-c binding protein A,
FT                   chloroplastic"
FT                   /id="PRO_0000021233"
FT   TRANSMEM        81..101
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        122..142
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        183..203
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   217 AA;  22883 MW;  3BECFF6D2D85148B CRC64;
     MKSAVMAVAC AAAPGLRRPS AFNGAALTTS AKSSSAMKMS FESEIGAQAP LGFWDPLGLL
     ADADQDGFER LRYVEVKHGR IAMLAIAGHL TQQNARLPGM LSNSANLSFA DMPNGVAALS
     KIPPAGLAQI FAFIGFLELA VMKNVEGSFP GDFTLGGNPF GASWDAMSEE TQASKRAIEL
     NNGRAAQMGI LALMVHEELN NKPYVINDLV GASYTFN