5Y6P image
Deposition Date 2017-08-13
Release Date 2017-11-15
Last Version Date 2025-09-17
Entry Detail
PDB ID:
5Y6P
Keywords:
PHOTOSYNTHESIS
Title:
Structure of the phycobilisome from the red alga Griffithsia pacifica
Biological Source:
Source Organism:
Griffithsia pacifica (Taxon ID: 35689)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.50 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
5Y6P validation report
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:LRC1
Chain IDs:AG (auth: 14), AI (auth: W5), AP (auth: R8), AR (auth: W9), AT (auth: aW), AV (auth: bW)
Chain Length:232
Number of Molecules:6
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR1
Chain IDs:BG (auth: 24), BI (auth: X5), BP (auth: S8), BR (auth: X9), BT (auth: aX), BV (auth: bX)
Chain Length:371
Number of Molecules:6
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LRC6
Chain IDs:A (auth: A1), B (auth: B1)
Chain Length:161
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR_gamma4
Chain IDs:AC (auth: A2), AE (auth: a3), CG (auth: 34), CI (auth: Y5), VN (auth: b8), AO (auth: b9), DP (auth: U8), DR (auth: Z9), CT (auth: aY), CV (auth: bY), AY (auth: dw), BY (auth: dx), CAA (auth: ey), DAA (auth: ez)
Chain Length:318
Number of Molecules:14
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LRC2
Chain IDs:BC (auth: B2), BE (auth: b3)
Chain Length:477
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LRC4
Chain IDs:C (auth: C1), D (auth: D1)
Chain Length:161
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR_gamma5
Chain IDs:CC (auth: C2), DC (auth: D2), CE (auth: c3), DE (auth: d3), DG (auth: 44), DI (auth: Z5), WN (auth: c8), XN (auth: d8), YN (auth: e8), BO (auth: c9), CO (auth: d9), DO (auth: e9), CP (auth: T8), CR (auth: Y9), DT (auth: aZ), DV (auth: bZ)
Chain Length:285
Number of Molecules:16
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LRC5
Chain IDs:E (auth: E1), F (auth: F1)
Chain Length:307
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:alpha_APC
Chain IDs:G (auth: G1), I (auth: I1), K (auth: K1), N (auth: N1), P (auth: P1), R (auth: R1), T (auth: T1), X (auth: X1), Z (auth: Z1), BA (auth: b1), DA (auth: d1), FA (auth: f1), IA (auth: i1), KA (auth: k1), OA (auth: o1), QA (auth: q1), SA (auth: s1), UA (auth: u1), WA (auth: w1), YA (auth: y1)
Chain Length:260
Number of Molecules:20
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:beta_APC
Chain IDs:H (auth: H1), J (auth: J1), L (auth: L1), M (auth: M1), O (auth: O1), S (auth: S1), U (auth: U1), W (auth: W1), Y (auth: Y1), AA (auth: a1), CA (auth: c1), EA (auth: e1), HA (auth: h1), JA (auth: j1), LA (auth: l1), NA (auth: n1), PA (auth: p1), RA (auth: r1), TA (auth: t1), VA (auth: v1), XA (auth: x1), ZA (auth: z1)
Chain Length:161
Number of Molecules:22
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:ApcF
Chain IDs:Q (auth: Q1), GA (auth: g1)
Chain Length:161
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:ApcD
Chain IDs:V (auth: V1), MA (auth: m1)
Chain Length:161
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LCM
Chain IDs:AB (auth: a2), BB (auth: b2)
Chain Length:318
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:alpha_PC
Chain IDs:EG (auth: a4), FG (auth: b4), HG (auth: d4), JG (auth: f4), MG (auth: i4), OG (auth: k4), EI (auth: a5), FI (auth: b5), HI (auth: d5), JI (auth: f5), MI (auth: i5), OI (auth: k5), EP (auth: V8), GP (auth: X8), IP (auth: Z8), KP (auth: g9), MP (auth: i9), OP (auth: k9), ER (auth: aa), GR (auth: ac), IR (auth: ae), KR (auth: ag), MR (auth: ai), OR (auth: ak), ET (auth: ba), GT (auth: bc), IT (auth: be), KT (auth: bg), MT (auth: bi), OT (auth: bk), EV (auth: ca), GV (auth: cc), IV (auth: ce), KV (auth: cg), MV (auth: ci), OV (auth: ck)
Chain Length:164
Number of Molecules:36
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LRC3
Chain IDs:UN (auth: a8), ZN (auth: a9)
Chain Length:177
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LC
Chain IDs:CB (auth: c2), DB (auth: d2)
Chain Length:285
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:beta_PC
Chain IDs:GG (auth: c4), IG (auth: e4), KG (auth: g4), LG (auth: h4), NG (auth: j4), PG (auth: l4), GI (auth: c5), II (auth: e5), KI (auth: g5), LI (auth: h5), NI (auth: j5), PI (auth: l5), FP (auth: W8), HP (auth: Y8), JP (auth: f9), LP (auth: h9), NP (auth: j9), PP (auth: l9), FR (auth: ab), HR (auth: ad), JR (auth: af), LR (auth: ah), NR (auth: aj), PR (auth: al), FT (auth: bb), HT (auth: bd), JT (auth: bf), LT (auth: bh), NT (auth: bj), PT (auth: bl), FV (auth: cb), HV (auth: cd), JV (auth: cf), LV (auth: ch), NV (auth: cj), PV (auth: cl)
Chain Length:177
Number of Molecules:36
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR3
Chain IDs:CY (auth: dy), DY (auth: dz)
Chain Length:177
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:R-phycoerythrin alpha chain
Chain IDs:EB (auth: e2), GB (auth: g2), IB (auth: i2), KB (auth: k2), MB (auth: m2), OB (auth: o2), QB (auth: q2), SB (auth: s2), UB (auth: u2), WB (auth: w2), YB (auth: y2), EC (auth: E2), GC (auth: G2), IC (auth: I2), KC (auth: K2), MC (auth: M2), OC (auth: O2), QC (auth: Q2), SC (auth: S2), UC (auth: U2), WC (auth: W2), YC (auth: Y2), AD (auth: A3), CD (auth: C3), ED (auth: E3), GD (auth: G3), ID (auth: I3), KD (auth: K3), MD (auth: M3), OD (auth: O3), QD (auth: Q3), SD (auth: S3), UD (auth: U3), WD (auth: W3), YD (auth: Y3), EE (auth: e3), GE (auth: g3), IE (auth: i3), KE (auth: k3), ME (auth: m3), OE (auth: o3), QE (auth: q3), SE (auth: s3), UE (auth: u3), WE (auth: w3), YE (auth: y3), AF (auth: A4), CF (auth: C4), EF (auth: E4), GF (auth: G4), IF (auth: I4), KF (auth: K4), MF (auth: M4), OF (auth: O4), QF (auth: Q4), SF (auth: S4), UF (auth: U4), WF (auth: W4), YF (auth: Y4), QG (auth: m4), SG (auth: o4), UG (auth: q4), WG (auth: s4), YG (auth: u4), AH (auth: w4), CH (auth: y4), EH (auth: A5), GH (auth: C5), IH (auth: E5), KH (auth: G5), MH (auth: I5), OH (auth: K5), QH (auth: M5), SH (auth: O5), UH (auth: Q5), WH (auth: S5), YH (auth: U5), QI (auth: m5), SI (auth: o5), UI (auth: q5), WI (auth: s5), YI (auth: u5), AJ (auth: w5), CJ (auth: y5), HJ (auth: i8), IJ (auth: j8), JJ (auth: k8), KJ (auth: l8), LJ (auth: m8), MJ (auth: A6), OJ (auth: C6), QJ (auth: E6), SJ (auth: G6), UJ (auth: I6), WJ (auth: K6), YJ (auth: M6), AK (auth: O6), CK (auth: Q6), EK (auth: S6), GK (auth: U6), IK (auth: W6), KK (auth: Y6), RK (auth: f6), SK (auth: g6), TK (auth: h6), UK (auth: i6), VK (auth: j6), WK (auth: k6), YK (auth: m6), AL (auth: o6), CL (auth: q6), EL (auth: s6), GL (auth: u6), IL (auth: w6), PL (auth: q8), QL (auth: r8), RL (auth: s8), SL (auth: t8), TL (auth: u8), UL (auth: A7), WL (auth: C7), YL (auth: E7), AM (auth: G7), CM (auth: I7), EM (auth: K7), GM (auth: M7), IM (auth: O7), KM (auth: Q7), MM (auth: S7), OM (auth: U7), QM (auth: W7), SM (auth: Y7), ZM (auth: f7), AN (auth: g7), BN (auth: h7), CN (auth: i7), DN (auth: j7), EN (auth: k7), GN (auth: m7), IN (auth: o7), KN (auth: q7), MN (auth: s7), ON (auth: u7), QN (auth: w7), EO (auth: v8), GO (auth: x8), IO (auth: z8), KO (auth: B8), MO (auth: D8), OO (auth: F8), QO (auth: H8), SO (auth: J8), UO (auth: L8), WO (auth: N8), YO (auth: P8), QP (auth: m9), SP (auth: o9), UP (auth: q9), WP (auth: s9), YP (auth: u9), AQ (auth: w9), CQ (auth: y9), EQ (auth: A9), GQ (auth: C9), IQ (auth: E9), KQ (auth: G9), MQ (auth: I9), OQ (auth: K9), QQ (auth: M9), SQ (auth: O9), UQ (auth: Q9), WQ (auth: S9), YQ (auth: U9), QR (auth: am), SR (auth: ao), UR (auth: aq), WR (auth: as), YR (auth: au), AS (auth: aw), CS (auth: ay), ES (auth: aA), GS (auth: aC), IS (auth: aE), KS (auth: aG), MS (auth: aI), OS (auth: aK), QS (auth: aM), SS (auth: aO), US (auth: aQ), WS (auth: aS), YS (auth: aU), QT (auth: bm), XT (auth: bt), YT (auth: bu), ZT (auth: bv), AU (auth: bw), BU (auth: bx), CU (auth: by), EU (auth: bA), GU (auth: bC), IU (auth: bE), KU (auth: bG), MU (auth: bI), OU (auth: bK), QU (auth: bM), SU (auth: bO), UU (auth: bQ), WU (auth: bS), YU (auth: bU), QV (auth: cm), XV (auth: ct), YV (auth: cu), ZV (auth: cv), AW (auth: cw), BW (auth: cx), CW (auth: cy), EW (auth: cA), GW (auth: cC), HW (auth: cD), KW (auth: cG), MW (auth: cI), OW (auth: cK), WW (auth: cS), XW (auth: cT), YW (auth: cU), ZW (auth: cV), AX (auth: cW), BX (auth: cX), DX (auth: cZ), EX (auth: da), FX (auth: db), GX (auth: dc), IX (auth: de), KX (auth: dg), OX (auth: dk), QX (auth: dm), SX (auth: do), UX (auth: dq), WX (auth: ds), YX (auth: du), EY (auth: dA), GY (auth: dC), IY (auth: dE), KY (auth: dG), MY (auth: dI), NY (auth: dJ), QY (auth: dM), SY (auth: dO), UY (auth: dQ), WY (auth: dS), YY (auth: dU), AZ (auth: dW), DZ (auth: dZ), EZ (auth: ea), HZ (auth: ed), JZ (auth: ef), LZ (auth: eh), NZ (auth: ej), OZ (auth: ek), QZ (auth: em), SZ (auth: eo), UZ (auth: eq), WZ (auth: es), YZ (auth: eu), EAA (auth: eA), GAA (auth: eC), IAA (auth: eE), KAA (auth: eG), MAA (auth: eI), OAA (auth: eK), QAA (auth: eM), SAA (auth: eO), UAA (auth: eQ), WAA (auth: eS), YAA (auth: eU), ABA (auth: eW), EBA (auth: la), GBA (auth: lc), IBA (auth: le), KBA (auth: lg), MBA (auth: li), OBA (auth: lk), QBA (auth: lm), SBA (auth: lo), UBA (auth: lq), WBA (auth: ls), YBA (auth: lu), ACA (auth: lw), FCA (auth: fb), ICA (auth: fe), KCA (auth: fg), LCA (auth: fh), OCA (auth: fk), PCA (auth: fl), RCA (auth: fn), TCA (auth: fp), VCA (auth: fr), XCA (auth: ft), ZCA (auth: fv), BDA (auth: fx), FDA (auth: gb), GDA (auth: gc), JDA (auth: gf), LDA (auth: gh), NDA (auth: gj), PDA (auth: gl), QDA (auth: gm), SDA (auth: go), UDA (auth: gq), WDA (auth: gs), YDA (auth: gu), AEA (auth: gw), EEA (auth: hA), GEA (auth: hC), IEA (auth: hE), JEA (auth: hF), MEA (auth: hI), OEA (auth: hK), QEA (auth: hM), SEA (auth: hO), UEA (auth: hQ), WEA (auth: hS), YEA (auth: hU), AFA (auth: hW), EFA (auth: iA), FFA (auth: iB)
Chain Length:164
Number of Molecules:326
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR_gamma7
Chain IDs:CBA (auth: eY), DBA (auth: eZ)
Chain Length:318
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR2
Chain IDs:AAA (auth: ew), BAA (auth: ex), HCA (auth: fd), DDA (auth: fz)
Chain Length:164
Number of Molecules:4
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:R-phycoerythrin beta chain
Chain IDs:FB (auth: f2), HB (auth: h2), JB (auth: j2), LB (auth: l2), NB (auth: n2), PB (auth: p2), RB (auth: r2), TB (auth: t2), VB (auth: v2), XB (auth: x2), ZB (auth: z2), FC (auth: F2), HC (auth: H2), JC (auth: J2), LC (auth: L2), NC (auth: N2), PC (auth: P2), RC (auth: R2), TC (auth: T2), VC (auth: V2), XC (auth: X2), ZC (auth: Z2), BD (auth: B3), DD (auth: D3), FD (auth: F3), HD (auth: H3), JD (auth: J3), LD (auth: L3), ND (auth: N3), PD (auth: P3), RD (auth: R3), TD (auth: T3), VD (auth: V3), XD (auth: X3), ZD (auth: Z3), FE (auth: f3), HE (auth: h3), JE (auth: j3), LE (auth: l3), NE (auth: n3), PE (auth: p3), RE (auth: r3), TE (auth: t3), VE (auth: v3), XE (auth: x3), ZE (auth: z3), BF (auth: B4), DF (auth: D4), FF (auth: F4), HF (auth: H4), JF (auth: J4), LF (auth: L4), NF (auth: N4), PF (auth: P4), RF (auth: R4), TF (auth: T4), VF (auth: V4), XF (auth: X4), ZF (auth: Z4), RG (auth: n4), TG (auth: p4), VG (auth: r4), XG (auth: t4), ZG (auth: v4), BH (auth: x4), DH (auth: z4), FH (auth: B5), HH (auth: D5), JH (auth: F5), LH (auth: H5), NH (auth: J5), PH (auth: L5), RH (auth: N5), TH (auth: P5), VH (auth: R5), XH (auth: T5), ZH (auth: V5), RI (auth: n5), TI (auth: p5), VI (auth: r5), XI (auth: t5), ZI (auth: v5), BJ (auth: x5), DJ (auth: z5), EJ (auth: f8), FJ (auth: g8), GJ (auth: h8), NJ (auth: B6), PJ (auth: D6), RJ (auth: F6), TJ (auth: H6), VJ (auth: J6), XJ (auth: L6), ZJ (auth: N6), BK (auth: P6), DK (auth: R6), FK (auth: T6), HK (auth: V6), JK (auth: X6), LK (auth: Z6), MK (auth: a6), NK (auth: b6), OK (auth: c6), PK (auth: d6), QK (auth: e6), XK (auth: l6), ZK (auth: n6), BL (auth: p6), DL (auth: r6), FL (auth: t6), HL (auth: v6), JL (auth: x6), KL (auth: y6), LL (auth: z6), ML (auth: n8), NL (auth: o8), OL (auth: p8), VL (auth: B7), XL (auth: D7), ZL (auth: F7), BM (auth: H7), DM (auth: J7), FM (auth: L7), HM (auth: N7), JM (auth: P7), LM (auth: R7), NM (auth: T7), PM (auth: V7), RM (auth: X7), TM (auth: Z7), UM (auth: a7), VM (auth: b7), WM (auth: c7), XM (auth: d7), YM (auth: e7), FN (auth: l7), HN (auth: n7), JN (auth: p7), LN (auth: r7), NN (auth: t7), PN (auth: v7), RN (auth: x7), SN (auth: y7), TN (auth: z7), FO (auth: w8), HO (auth: y8), JO (auth: A8), LO (auth: C8), NO (auth: E8), PO (auth: G8), RO (auth: I8), TO (auth: K8), VO (auth: M8), XO (auth: O8), ZO (auth: Q8), RP (auth: n9), TP (auth: p9), VP (auth: r9), XP (auth: t9), ZP (auth: v9), BQ (auth: x9), DQ (auth: z9), FQ (auth: B9), HQ (auth: D9), JQ (auth: F9), LQ (auth: H9), NQ (auth: J9), PQ (auth: L9), RQ (auth: N9), TQ (auth: P9), VQ (auth: R9), XQ (auth: T9), ZQ (auth: V9), RR (auth: an), TR (auth: ap), VR (auth: ar), XR (auth: at), ZR (auth: av), BS (auth: ax), DS (auth: az), FS (auth: aB), HS (auth: aD), JS (auth: aF), LS (auth: aH), NS (auth: aJ), PS (auth: aL), RS (auth: aN), TS (auth: aP), VS (auth: aR), XS (auth: aT), ZS (auth: aV), RT (auth: bn), ST (auth: bo), TT (auth: bp), UT (auth: bq), VT (auth: br), WT (auth: bs), DU (auth: bz), FU (auth: bB), HU (auth: bD), JU (auth: bF), LU (auth: bH), NU (auth: bJ), PU (auth: bL), RU (auth: bN), TU (auth: bP), VU (auth: bR), XU (auth: bT), ZU (auth: bV), RV (auth: cn), SV (auth: co), TV (auth: cp), UV (auth: cq), VV (auth: cr), WV (auth: cs), DW (auth: cz), FW (auth: cB), IW (auth: cE), JW (auth: cF), LW (auth: cH), NW (auth: cJ), PW (auth: cL), QW (auth: cM), RW (auth: cN), SW (auth: cO), TW (auth: cP), UW (auth: cQ), VW (auth: cR), CX (auth: cY), HX (auth: dd), JX (auth: df), LX (auth: dh), MX (auth: di), NX (auth: dj), PX (auth: dl), RX (auth: dn), TX (auth: dp), VX (auth: dr), XX (auth: dt), ZX (auth: dv), FY (auth: dB), HY (auth: dD), JY (auth: dF), LY (auth: dH), OY (auth: dK), PY (auth: dL), RY (auth: dN), TY (auth: dP), VY (auth: dR), XY (auth: dT), ZY (auth: dV), BZ (auth: dX), CZ (auth: dY), FZ (auth: eb), GZ (auth: ec), IZ (auth: ee), KZ (auth: eg), MZ (auth: ei), PZ (auth: el), RZ (auth: en), TZ (auth: ep), VZ (auth: er), XZ (auth: et), ZZ (auth: ev), FAA (auth: eB), HAA (auth: eD), JAA (auth: eF), LAA (auth: eH), NAA (auth: eJ), PAA (auth: eL), RAA (auth: eN), TAA (auth: eP), VAA (auth: eR), XAA (auth: eT), ZAA (auth: eV), BBA (auth: eX), FBA (auth: lb), HBA (auth: ld), JBA (auth: lf), LBA (auth: lh), NBA (auth: lj), PBA (auth: ll), RBA (auth: ln), TBA (auth: lp), VBA (auth: lr), XBA (auth: lt), ZBA (auth: lv), BCA (auth: lx), ECA (auth: fa), GCA (auth: fc), JCA (auth: ff), MCA (auth: fi), NCA (auth: fj), QCA (auth: fm), SCA (auth: fo), UCA (auth: fq), WCA (auth: fs), YCA (auth: fu), ADA (auth: fw), CDA (auth: fy), EDA (auth: ga), HDA (auth: gd), IDA (auth: ge), KDA (auth: gg), MDA (auth: gi), ODA (auth: gk), RDA (auth: gn), TDA (auth: gp), VDA (auth: gr), XDA (auth: gt), ZDA (auth: gv), BEA (auth: gx), FEA (auth: hB), HEA (auth: hD), KEA (auth: hG), LEA (auth: hH), NEA (auth: hJ), PEA (auth: hL), REA (auth: hN), TEA (auth: hP), VEA (auth: hR), XEA (auth: hT), ZEA (auth: hV), BFA (auth: hX), GFA (auth: iC), HFA (auth: iD), IFA (auth: iE), JFA (auth: iF), KFA (auth: iG), LFA (auth: iH), MFA (auth: jI), NFA (auth: jJ), OFA (auth: jK), PFA (auth: jL), QFA (auth: jM), RFA (auth: jN), SFA (auth: jO), TFA (auth: jP), UFA (auth: kQ), VFA (auth: kR), WFA (auth: kS), XFA (auth: kT), YFA (auth: kU), ZFA (auth: kV), AGA (auth: kW), BGA (auth: kX)
Chain Length:177
Number of Molecules:346
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR_gamma6
Chain IDs:CEA (auth: gy), DEA (auth: gz)
Chain Length:297
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR9
Chain IDs:CGA (auth: ka), DGA (auth: kb)
Chain Length:362
Number of Molecules:2
Biological Source:Griffithsia pacifica
Polymer Type:polypeptide(L)
Molecule:LR_gamma8
Chain IDs:CCA (auth: ly), DCA (auth: lz), CFA (auth: hY), DFA (auth: hZ)
Chain Length:350
Number of Molecules:4
Biological Source:Griffithsia pacifica
Ligand Molecules
CYC
PEB
PUB
PVN
Primary Citation
Structure of phycobilisome from the red alga Griffithsia pacifica
Nature 551 57 63 (2017)
PMID: 29045394 DOI: 10.1038/nature24278

Abstact

Life on Earth depends on photosynthesis for its conversion of solar energy to chemical energy. Photosynthetic organisms have developed a variety of light-harvesting systems to capture sunlight. The largest light-harvesting complex is the phycobilisome (PBS), the main light-harvesting antenna in cyanobacteria and red algae. It is composed of phycobiliproteins and linker proteins but the assembly mechanisms and energy transfer pathways of the PBS are not well understood. Here we report the structure of a 16.8-megadalton PBS from a red alga at 3.5 Å resolution obtained by single-particle cryo-electron microscopy. We modelled 862 protein subunits, including 4 linkers in the core, 16 rod-core linkers and 52 rod linkers, and located a total of 2,048 chromophores. This structure reveals the mechanisms underlying specific interactions between linkers and phycobiliproteins, and the formation of linker skeletons. These results provide a firm structural basis for our understanding of complex assembly and the mechanisms of energy transfer within the PBS.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
5Y6P