7Y4L image
Deposition Date 2022-06-15
Release Date 2023-01-18
Last Version Date 2025-09-17
Entry Detail
PDB ID:
7Y4L
Keywords:
Title:
PBS of PBS-PSII-PSI-LHCs from Porphyridium purpureum.
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.30 Å
Aggregation State:
CELL
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Lrc4
Gene (Uniprot):FVE85_4247
Chain IDs:LM (auth: 23), MN (auth: Z3)
Chain Length:159
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:LRC5
Gene (Uniprot):FVE85_5140
Chain IDs:MM (auth: 33), NN (auth: a3)
Chain Length:288
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:FAS1 domain-containing protein
Gene (Uniprot):FVE85_7258
Chain IDs:NM (auth: 43), ON (auth: b3)
Chain Length:253
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobiliprotein ApcE
Gene (Uniprot):apcE
Chain IDs:NO (auth: 63), OO (auth: 73)
Chain Length:879
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Allophycocyanin alpha subunit
Gene (Uniprot):apcA
Chain IDs:OM (auth: A3), QM (auth: C3), SM (auth: E3), UM (auth: G3), XM (auth: J3), YM (auth: K3), BN (auth: N3), DN (auth: P3), FN (auth: R3), HN (auth: T3), PN (auth: c3), RN (auth: e3), TN (auth: g3), VN (auth: i3), YN (auth: l3), ZN (auth: m3), CO (auth: p3), EO (auth: r3), GO (auth: t3), IO (auth: v3)
Chain Length:288
Number of Molecules:20
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Linker4
Gene (Uniprot):FVE85_1598
Chain IDs:A (auth: AA), E (auth: EA)
Chain Length:138
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:R-phycoerythrin gamma chain, chloroplastic
Gene (Uniprot):FVE85_2041
Chain IDs:AA (auth: AB), AB (auth: AC), AC (auth: AD), AD (auth: AE), AI (auth: AJ), XJ (auth: YK), WK (auth: Y1), IL (auth: A2), NQ (auth: A5), MR (auth: A6)
Chain Length:290
Number of Molecules:10
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:R-phycoerythrin gamma chain, chloroplastic
Gene (Uniprot):FVE85_2042
Chain IDs:AG (auth: AH), PO (auth: A4), LV (auth: w8), MV (auth: x8), TZ (auth: wF), UZ (auth: xF)
Chain Length:273
Number of Molecules:6
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Allophycocyanin beta subunit
Gene (Uniprot):apcB
Chain IDs:PM (auth: B3), RM (auth: D3), TM (auth: F3), VM (auth: H3), WM (auth: I3), ZM (auth: L3), AN (auth: M3), CN (auth: O3), EN (auth: Q3), GN (auth: S3), IN (auth: U3), QN (auth: d3), SN (auth: f3), UN (auth: h3), WN (auth: j3), XN (auth: k3), AO (auth: n3), BO (auth: o3), DO (auth: q3), FO (auth: s3), HO (auth: u3), JO (auth: w3)
Chain Length:253
Number of Molecules:22
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:B-phycoerythrin beta chain
Gene (Uniprot):cpeB
Chain IDs:B (auth: BA), C (auth: CA), D (auth: DA), F (auth: FA), G (auth: GA), H (auth: HA), I (auth: IA), L (auth: LA), M (auth: MA), N (auth: NA), O (auth: OA), P (auth: PA), Q (auth: QA), R (auth: RA), S (auth: SA), V (auth: VA), X (auth: XA), Y (auth: YA), Z (auth: ZA), PA (auth: PB), RA (auth: RB), TA (auth: TB), VA (auth: VB), YA (auth: YB), PB (auth: PC), RB (auth: RC), TB (auth: TC), VB (auth: VC), YB (auth: YC), PC (auth: PD), RC (auth: RD), TC (auth: TD), VC (auth: VD), YC (auth: YD), PD (auth: PE), RD (auth: RE), TD (auth: TE), VD (auth: VE), YD (auth: YE), BE (auth: BF), DE (auth: DF), FE (auth: FF), HE (auth: HF), JE (auth: JF), LE (auth: LF), NE (auth: NF), PE (auth: PF), RE (auth: RF), TE (auth: TF), VE (auth: VF), XE (auth: XF), ZE (auth: ZF), BF (auth: BG), DF (auth: DG), FF (auth: FG), HF (auth: HG), JF (auth: JG), LF (auth: LG), OF (auth: OG), QF (auth: QG), SF (auth: SG), UF (auth: UG), WF (auth: WG), YF (auth: YG), DG (auth: DH), FG (auth: FH), HG (auth: HH), JG (auth: JH), LG (auth: LH), NG (auth: NH), PG (auth: PH), RG (auth: RH), TG (auth: TH), VG (auth: VH), XG (auth: XH), ZG (auth: ZH), BH (auth: BI), DH (auth: DI), FH (auth: FI), HH (auth: HI), JH (auth: JI), LH (auth: LI), OH (auth: OI), QH (auth: QI), SH (auth: SI), UH (auth: UI), WH (auth: WI), YH (auth: YI), CI (auth: CJ), EI (auth: EJ), GI (auth: GJ), II (auth: IJ), KI (auth: KJ), MI (auth: MJ), OI (auth: OJ), QI (auth: QJ), SI (auth: SJ), UI (auth: UJ), WI (auth: WJ), YI (auth: YJ), AJ (auth: BK), CJ (auth: DK), EJ (auth: FK), GJ (auth: HK), IJ (auth: JK), KJ (auth: LK), MJ (auth: NK), OJ (auth: PK), QJ (auth: RK), SJ (auth: TK), UJ (auth: VK), WJ (auth: XK), ZJ (auth: B1), BK (auth: D1), DK (auth: F1), FK (auth: H1), HK (auth: J1), JK (auth: L1), LK (auth: N1), NK (auth: P1), PK (auth: R1), RK (auth: T1), TK (auth: V1), VK (auth: X1), CL (auth: P2), EL (auth: R2), GL (auth: T2), TL (auth: V2), WL (auth: Y2), ZL (auth: g2), BM (auth: i2), DM (auth: k2), FM (auth: m2), GM (auth: a2), IM (auth: c2), KM (auth: e2), SO (auth: D4), UO (auth: F4), WO (auth: H4), YO (auth: J4), AP (auth: L4), CP (auth: N4), EP (auth: P4), GP (auth: R4), IP (auth: T4), KP (auth: V4), MP (auth: X4), OP (auth: Z4), QP (auth: c4), SP (auth: e4), UP (auth: g4), WP (auth: i4), YP (auth: k4), AQ (auth: m4), DQ (auth: M5), FQ (auth: O5), HQ (auth: Q5), JQ (auth: S5), LQ (auth: U5), PQ (auth: C5), RQ (auth: E5), TQ (auth: G5), VQ (auth: I5), XQ (auth: K5), ZQ (auth: W5), BR (auth: Y5), RR (auth: P6), TR (auth: R6), VR (auth: T6), XR (auth: V6), AS (auth: Y6), CS (auth: i6), ES (auth: k6), GS (auth: m6), HS (auth: a6), JS (auth: c6), LS (auth: e6), NS (auth: g6), QS (auth: B7), SS (auth: D7), US (auth: F7), WS (auth: H7), YS (auth: J7), AT (auth: L7), DT (auth: N7), FT (auth: P7), HT (auth: R7), JT (auth: T7), LT (auth: V7), NT (auth: X7), PT (auth: V8), RT (auth: X8), TT (auth: Z8), VT (auth: B8), XT (auth: D8), ZT (auth: F8), BU (auth: H8), DU (auth: J8), FU (auth: L8), HU (auth: N8), JU (auth: P8), LU (auth: R8), NU (auth: T8), QU (auth: b8), SU (auth: d8), UU (auth: f8), WU (auth: h8), YU (auth: j8), AV (auth: l8), CV (auth: n8), EV (auth: p8), GV (auth: r8), IV (auth: t8), KV (auth: v8), QV (auth: B9), SV (auth: D9), UV (auth: F9), WV (auth: H9), YV (auth: J9), AW (auth: L9), DW (auth: O9), FW (auth: Q9), HW (auth: S9), JW (auth: U9), LW (auth: W9), NW (auth: Y9), QW (auth: aA), RW (auth: bA), TW (auth: dA), UW (auth: eA), VW (auth: gA), XW (auth: iB), ZW (auth: kB), BX (auth: mB), CX (auth: aB), EX (auth: cB), GX (auth: eB), IX (auth: gB), LX (auth: gC), NX (auth: iC), PX (auth: kC), RX (auth: mC), SX (auth: aC), UX (auth: cC), WX (auth: eC), XX (auth: aD), ZX (auth: cD), BY (auth: eD), DY (auth: gD), FY (auth: iD), HY (auth: kD), JY (auth: mD), KY (auth: aE), MY (auth: cE), OY (auth: eE), QY (auth: gE), SY (auth: iE), UY (auth: kE), WY (auth: mE), YY (auth: bF), AZ (auth: dF), CZ (auth: fF), EZ (auth: hF), GZ (auth: jF), IZ (auth: lF), KZ (auth: nF), MZ (auth: pF), OZ (auth: rF), QZ (auth: tF), SZ (auth: vF), YZ (auth: cH), AAA (auth: eH), CAA (auth: gH), EAA (auth: iH), GAA (auth: kH), IAA (auth: mH)
Chain Length:290
Number of Molecules:276
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome rod-core linker polypeptide
Chain IDs:BA (auth: BB), BB (auth: BC), BC (auth: BD), BD (auth: BE), JL (auth: B2), NR (auth: B6)
Chain Length:164
Number of Molecules:6
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:R-phycoerythrin gamma chain, chloroplastic
Gene (Uniprot):FVE85_2309
Chain IDs:BG (auth: BH), QO (auth: B4), NV (auth: y8), VZ (auth: yF)
Chain Length:490
Number of Molecules:4
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:C-phycocyanin alpha subunit
Chain IDs:CA (auth: CB), EA (auth: EB), GA (auth: GB), IA (auth: IB), KA (auth: KB), MA (auth: MB), CB (auth: CC), EB (auth: EC), GB (auth: GC), IB (auth: IC), KB (auth: KC), MB (auth: MC), CC (auth: CD), EC (auth: ED), GC (auth: GD), IC (auth: ID), KC (auth: KD), MC (auth: MD), CD (auth: CE), ED (auth: EE), GD (auth: GE), ID (auth: IE), KD (auth: KE), MD (auth: ME), ZK (auth: M2), KL (auth: C2), ML (auth: E2), OL (auth: G2), QL (auth: I2), SL (auth: K2), DR (auth: G6), FR (auth: I6), HR (auth: K6), JR (auth: M6), OR (auth: C6), QR (auth: E6)
Chain Length:162
Number of Molecules:36
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:C-phycocyanin beta subunit
Chain IDs:DA (auth: DB), FA (auth: FB), HA (auth: HB), JA (auth: JB), LA (auth: LB), NA (auth: NB), DB (auth: DC), FB (auth: FC), HB (auth: HC), JB (auth: JC), LB (auth: LC), NB (auth: NC), DC (auth: DD), FC (auth: FD), HC (auth: HD), JC (auth: JD), LC (auth: LD), NC (auth: ND), DD (auth: DE), FD (auth: FE), HD (auth: HE), JD (auth: JE), LD (auth: LE), ND (auth: NE), YK (auth: L2), AL (auth: N2), LL (auth: D2), NL (auth: F2), PL (auth: H2), RL (auth: J2), CR (auth: F6), ER (auth: H6), GR (auth: J6), IR (auth: L6), KR (auth: N6), PR (auth: D6)
Chain Length:172
Number of Molecules:36
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycoerythrin alpha subunit
Chain IDs:J (auth: JA), T (auth: TA), OA (auth: OB), QA (auth: QB), SA (auth: SB), UA (auth: UB), WA (auth: WB), ZA (auth: ZB), OB (auth: OC), QB (auth: QC), SB (auth: SC), UB (auth: UC), WB (auth: WC), ZB (auth: ZC), OC (auth: OD), QC (auth: QD), SC (auth: SD), UC (auth: UD), WC (auth: WD), ZC (auth: ZD), OD (auth: OE), QD (auth: QE), SD (auth: SE), UD (auth: UE), WD (auth: WE), ZD (auth: ZE), AE (auth: AF), CE (auth: CF), EE (auth: EF), GE (auth: GF), IE (auth: IF), KE (auth: KF), ME (auth: MF), OE (auth: OF), QE (auth: QF), SE (auth: SF), UE (auth: UF), WE (auth: WF), YE (auth: YF), AF (auth: AG), CF (auth: CG), EF (auth: EG), GF (auth: GG), IF (auth: IG), KF (auth: KG), NF (auth: NG), PF (auth: PG), RF (auth: RG), TF (auth: TG), VF (auth: VG), XF (auth: XG), CG (auth: CH), EG (auth: EH), GG (auth: GH), IG (auth: IH), KG (auth: KH), MG (auth: MH), OG (auth: OH), QG (auth: QH), SG (auth: SH), UG (auth: UH), WG (auth: WH), YG (auth: YH), AH (auth: AI), CH (auth: CI), EH (auth: EI), GH (auth: GI), IH (auth: II), KH (auth: KI), NH (auth: NI), PH (auth: PI), RH (auth: RI), TH (auth: TI), VH (auth: VI), XH (auth: XI), BI (auth: BJ), DI (auth: DJ), FI (auth: FJ), HI (auth: HJ), JI (auth: JJ), LI (auth: LJ), NI (auth: NJ), PI (auth: PJ), RI (auth: RJ), TI (auth: TJ), VI (auth: VJ), XI (auth: XJ), ZI (auth: AK), BJ (auth: CK), DJ (auth: EK), FJ (auth: GK), HJ (auth: IK), JJ (auth: KK), LJ (auth: MK), NJ (auth: OK), PJ (auth: QK), RJ (auth: SK), TJ (auth: UK), VJ (auth: WK), YJ (auth: A1), AK (auth: C1), CK (auth: E1), EK (auth: G1), GK (auth: I1), IK (auth: K1), KK (auth: M1), MK (auth: O1), OK (auth: Q1), QK (auth: S1), SK (auth: U1), UK (auth: W1), BL (auth: O2), DL (auth: Q2), FL (auth: S2), HL (auth: U2), UL (auth: W2), XL (auth: Z2), YL (auth: f2), AM (auth: h2), CM (auth: j2), EM (auth: l2), HM (auth: b2), JM (auth: d2), RO (auth: C4), TO (auth: E4), VO (auth: G4), XO (auth: I4), ZO (auth: K4), BP (auth: M4), DP (auth: O4), FP (auth: Q4), HP (auth: S4), JP (auth: U4), LP (auth: W4), NP (auth: Y4), PP (auth: a4), RP (auth: d4), TP (auth: f4), VP (auth: h4), XP (auth: j4), ZP (auth: l4), CQ (auth: L5), EQ (auth: N5), GQ (auth: P5), IQ (auth: R5), KQ (auth: T5), OQ (auth: B5), QQ (auth: D5), SQ (auth: F5), UQ (auth: H5), WQ (auth: J5), YQ (auth: V5), AR (auth: X5), LR (auth: O6), SR (auth: Q6), UR (auth: S6), WR (auth: U6), YR (auth: W6), BS (auth: Z6), DS (auth: j6), FS (auth: l6), IS (auth: b6), KS (auth: d6), MS (auth: f6), OS (auth: h6), PS (auth: A7), RS (auth: C7), TS (auth: E7), VS (auth: G7), XS (auth: I7), ZS (auth: K7), CT (auth: M7), ET (auth: O7), GT (auth: Q7), IT (auth: S7), KT (auth: U7), MT (auth: W7), QT (auth: W8), ST (auth: Y8), UT (auth: A8), WT (auth: C8), YT (auth: E8), AU (auth: G8), CU (auth: I8), EU (auth: K8), GU (auth: M8), IU (auth: O8), KU (auth: Q8), MU (auth: S8), OU (auth: U8), PU (auth: a8), RU (auth: c8), TU (auth: e8), VU (auth: g8), XU (auth: i8), ZU (auth: k8), BV (auth: m8), DV (auth: o8), FV (auth: q8), HV (auth: s8), JV (auth: u8), PV (auth: A9), RV (auth: C9), TV (auth: E9), VV (auth: G9), XV (auth: I9), ZV (auth: K9), CW (auth: N9), EW (auth: P9), GW (auth: R9), IW (auth: T9), KW (auth: V9), MW (auth: X9), YW (auth: jB), AX (auth: lB), DX (auth: bB), FX (auth: dB), HX (auth: fB), JX (auth: hB), KX (auth: fC), MX (auth: hC), OX (auth: jC), QX (auth: lC), TX (auth: bC), VX (auth: dC), YX (auth: bD), AY (auth: dD), CY (auth: fD), EY (auth: hD), GY (auth: jD), IY (auth: lD), LY (auth: bE), NY (auth: dE), PY (auth: fE), RY (auth: hE), TY (auth: jE), VY (auth: lE), XY (auth: aF), ZY (auth: cF), BZ (auth: eF), DZ (auth: gF), FZ (auth: iF), HZ (auth: kF), JZ (auth: mF), LZ (auth: oF), NZ (auth: qF), PZ (auth: sF), RZ (auth: uF), XZ (auth: aH), ZZ (auth: dH), BAA (auth: fH), DAA (auth: hH), FAA (auth: jH), HAA (auth: lH)
Chain Length:164
Number of Molecules:254
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CaRSPs1
Gene (Uniprot):FVE85_9475
Chain IDs:K (auth: KA), U (auth: UA)
Chain Length:261
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 27.9 kDa linker polypeptide, phycoerythrin-associated, rod
Gene (Uniprot):FVE85_0816
Chain IDs:MF (auth: MG), ZF (auth: ZG)
Chain Length:316
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:R-phycoerythrin gamma chain, chloroplastic
Gene (Uniprot):FVE85_9240
Chain IDs:MH (auth: MI), ZH (auth: ZI), BW (auth: M9), OW (auth: Z9)
Chain Length:333
Number of Molecules:4
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Allophycocyanin gamma subunit
Gene (Uniprot):apcD
Chain IDs:JN (auth: V3), KO (auth: x3)
Chain Length:161
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Allophycocyanin beta 18 subunit
Gene (Uniprot):apcF
Chain IDs:KN (auth: W3), LO (auth: y3)
Chain Length:161
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CaRSPs2
Gene (Uniprot):FVE85_1715
Chain IDs:W (auth: WA), SW (auth: cA)
Chain Length:317
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 7.8 kDa linker polypeptide, allophycocyanin-associated, core
Gene (Uniprot):FVE85_2818
Chain IDs:LN (auth: X3), MO (auth: z3)
Chain Length:161
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 31.8 kDa linker polypeptide, phycoerythrin-associated, rod
Gene (Uniprot):FVE85_8023
Chain IDs:XA (auth: XB), XB (auth: XC), XC (auth: XD), XD (auth: XE), VL (auth: X2), ZR (auth: X6)
Chain Length:363
Number of Molecules:6
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:LPP2
Gene (Uniprot):FVE85_5305
Chain IDs:MAA (auth: Y3), NAA (auth: 53)
Chain Length:162
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 32.1 kDa linker polypeptide, phycocyanin-associated, rod
Gene (Uniprot):FVE85_2314
Chain IDs:BQ (auth: b4), JAA (auth: bH)
Chain Length:490
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 31.8 kDa linker polypeptide, phycoerythrin-associated, rod
Gene (Uniprot):FVE85_8365
Chain IDs:BT (auth: b7), OT (auth: Y7)
Chain Length:420
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 27.9 kDa linker polypeptide, phycoerythrin-associated, rod
Gene (Uniprot):FVE85_0729
Chain IDs:MQ (auth: d5), KAA (auth: dJ)
Chain Length:164
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 31.8 kDa linker polypeptide, phycoerythrin-associated, rod
Gene (Uniprot):FVE85_7221
Chain IDs:XK (auth: e1), LAA (auth: eK)
Chain Length:164
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:FAS1 domain-containing protein
Gene (Uniprot):FVE85_0141
Chain IDs:PW (auth: fA), WW (auth: hA)
Chain Length:288
Number of Molecules:2
Biological Source:Porphyridium purpureum
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phycobilisome 31.8 kDa linker polypeptide, phycoerythrin-associated, rod
Gene (Uniprot):FVE85_9810
Chain IDs:OV (auth: z8), WZ (auth: zF)
Chain Length:177
Number of Molecules:2
Biological Source:Porphyridium purpureum
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MEN B ASN modified residue
Primary Citation
In situ structure of the red algal phycobilisome-PSII-PSI-LHC megacomplex.
Nature 616 199 206 (2023)
PMID: 36922595 DOI: 10.1038/s41586-023-05831-0

Abstact

In oxygenic photosynthetic organisms, light energy is captured by antenna systems and transferred to photosystem II (PSII) and photosystem I (PSI) to drive photosynthesis1,2. The antenna systems of red algae consist of soluble phycobilisomes (PBSs) and transmembrane light-harvesting complexes (LHCs)3. Excitation energy transfer pathways from PBS to photosystems remain unclear owing to the lack of structural information. Here we present in situ structures of PBS-PSII-PSI-LHC megacomplexes from the red alga Porphyridium purpureum at near-atomic resolution using cryogenic electron tomography and in situ single-particle analysis4, providing interaction details between PBS, PSII and PSI. The structures reveal several unidentified and incomplete proteins and their roles in the assembly of the megacomplex, as well as a huge and sophisticated pigment network. This work provides a solid structural basis for unravelling the mechanisms of PBS-PSII-PSI-LHC megacomplex assembly, efficient energy transfer from PBS to the two photosystems, and regulation of energy distribution between PSII and PSI.

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