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9UEN

Cryo-EM structure of coccolithophore photosystem I

This is a non-PDB format compatible entry.
Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Light harvesting proteinpolymer20121992.41UniProt (R1FED1)Emiliania huxleyiEFCPI-7
2B
(B)
EFCPI-1polymer21922929.51Emiliania huxleyi
3C
(C)
Light harvesting proteinpolymer20822043.81UniProt (A0A6V2SE28)Emiliania huxleyiEFCPI-11
4D
(D)
EFCPI-6polymer25527147.91Pfam (PF00504)
UniProt (by SIFTS) (A0A0D3JRC1)
Emiliania huxleyi
5E
(E)
Light harvesting proteinpolymer21722394.91UniProt (A0A7S3TXG5)Emiliania huxleyiEFCPI-5
6F
(F)
Light harvesting proteinpolymer23925430.31UniProt (R1DWS2)Emiliania huxleyiEFCPI-8
7G
(G)
Light harvesting proteinpolymer19820761.01UniProt (R1DY94)Emiliania huxleyiEFCPI-13
8H
(H)
Light harvesting proteinpolymer19921065.21UniProt (A0A7S3WIW7)Emiliania huxleyiEFCPI-10
9I
(I)
Light harvesting proteinpolymer19621042.51UniProt (A0A7S3TFW5)Emiliania huxleyiEFCPI-3
10J
(J)
Light harvesting proteinpolymer20821689.11UniProt (A0A7S3WZA0)Emiliania huxleyiEFCPI-9
11K
(K)
Light harvesting proteinpolymer20422109.31UniProt (R1B3D6)Emiliania huxleyiEFCPI-4
12L
(L)
EFCPI-12polymer22824057.81Pfam (PF00504)
UniProt (by SIFTS) (A0A0D3KKH7)
Emiliania huxleyi
13M, P, W
(M, P, W)
Light harvesting proteinpolymer22423617.53UniProt (R1BTM8)Emiliania huxleyiEFCPI-15,14,16
14N
(N)
EFCPI-17polymer22523840.91UniProt (by SIFTS) (A0A7S3X591)Emiliania huxleyi
15O, R, T
(O, R, T)
Light harvesting proteinpolymer21021835.33UniProt (R1DCN2)Emiliania huxleyiEFCPI-20,19,21
16Q
(Q)
EFCPI-18polymer18719804.81UniProt (by SIFTS) (A0A7S3TXN3)Emiliania huxleyi
17S
(S)
EFCPI-22polymer24526558.61Pfam (PF00504)
UniProt (by SIFTS) (A0A0D3IMI1)
Emiliania huxleyi
18U
(U)
Light harvesting proteinpolymer19821708.01UniProt (R1ED82)Emiliania huxleyiEFCPI-2
19V
(V)
LEFPpolymer12312203.11UniProt (R1DLA7)Emiliania huxleyi
20X
(X)
Light harvesting proteinpolymer25327282.21UniProt (R1CMT6)Emiliania huxleyiEFCPI-26
21Y
(Y)
Light harvesting proteinpolymer24426276.21UniProt (R1FP66)Emiliania huxleyiEFCPI-24
22Z
(Z)
Light harvesting proteinpolymer25427517.41UniProt (R1CV07)Emiliania huxleyiEFCPI-23
23AA
(a)
Photosystem I P700 chlorophyll a apoprotein A1polymer75283647.41UniProt (Q4G3F6)Emiliania huxleyiPSI-A,PsaA
24BA
(b)
Photosystem I P700 chlorophyll a apoprotein A2polymer73482101.01UniProt (Q4G3F5)Emiliania huxleyiPSI-B,PsaB
25CA
(c)
Photosystem I iron-sulfur centerpolymer818809.21UniProt (Q4G3C1)Emiliania huxleyi9 kDa polypeptide,PSI-C,Photosystem I subunit VII,PsaC
26DA
(d)
Photosystem I reaction center subunit IIpolymer14215898.21UniProt (Q4G369)Emiliania huxleyi
27EA
(e)
Photosystem I reaction center subunit IVpolymer13113501.71UniProt (R1EZZ6)Emiliania huxleyiPsaE
28FA
(f)
Photosystem I reaction center subunit IIIpolymer18420000.21UniProt (Q4G3B9)Emiliania huxleyiPsaF,PSI-F
29GA
(i)
Photosystem I reaction center subunit VIIIpolymer363971.81UniProt (Q4G373)Emiliania huxleyiPSI-I
30HA
(j)
Photosystem I reaction center subunit IXpolymer404539.41UniProt (Q4G3B8)Emiliania huxleyiPSI-J
31IA
(k)
PSI-Kpolymer11211631.71UniProt (A0A7S3X4W4)Emiliania huxleyiPhotosystem I subunit X
32JA
(l)
Photosystem I reaction center subunit XIpolymer14515488.81UniProt (Q4G3B5)Emiliania huxleyiPSI subunit V,PSI-L
33KA
(m)
Photosystem I reaction center subunit XIIpolymer303213.91UniProt (Q4G371)Emiliania huxleyiPSI-M
34LA
(o)
EFCPI-30polymer27328691.21Pfam (PF00504)
UniProt (by SIFTS) (A0A0D3JQR4)
Emiliania huxleyi
35MA, QA, TA
(p, u, x)
Light harvesting proteinpolymer25527307.23UniProt (R1EIA6)Emiliania huxleyiEFCPI-29,28,27
36NA, RA
(q, v)
Light harvesting proteinpolymer26828328.72UniProt (R1DAV6)Emiliania huxleyiEFCPI-31,32
37OA
(r)
PsaRpolymer13313621.71UniProt (by SIFTS) (A0A0D3IGB8)Emiliania huxleyi
38PA, SA, UA
(t, w, y)
Light harvesting proteinpolymer26028110.13UniProt (R1CGG7)Emiliania huxleyiEFCPI-35,34,33
39VA
(z)
Light harvesting proteinpolymer25727669.81UniProt (R1EB65)Emiliania huxleyiEFCPI-25
40AAA, AB, AC, AE, AG...
(t, A, C, F, I...)
CHLOROPHYLL Anon-polymer893.5387Chemie (CLA)
41ABA, ADA, AEA, AK, AM...
(u, x, y, O, Q...)
Chlorophyll c2non-polymer608.9121Chemie (KC2)
42ACA, AH, BF, CCA, CFA...
(v, J, G, z, T...)
(3S,3'R,5R,6S,7cis)-7',8'-didehydro-5,6-dihydro-5,6-epoxy-beta,beta-carotene-3,3'-diolnon-polymer582.973Chemie (DD6)
43AJ, BD, DS, ES, GO...
(M, E, a, T, P...)
1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDEnon-polymer787.219Chemie (LMG)
44AD, AF, AFA, AO, AR...
(D, G, z, T, Y...)
(3S,3'S,5R,5'R,6S,6'R,8'R)-3,5'-dihydroxy-8-oxo-6',7'-didehydro-5,5',6,6',7,8-hexahydro-5,6-epoxy-beta,beta-caroten-3'- yl acetatenon-polymer658.9109Chemie (A86)
45OE, ON, YT, ZT
(F, S, a)
1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLEnon-polymer723.04Chemie (LHG)
46BJ, IL, JG, NP, PE...
(M, P, I, W, F...)
1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROLnon-polymer795.16Chemie (SQD)
47AS, BS, CS, DCA, DF...
(Z, v, G, z, T...)
[(2~{Z},4~{E},6~{E},8~{E},10~{E},12~{E},14~{E})-2-[2-[(4~{S},6~{R})-4-acetyloxy-2,2,6-trimethyl-6-oxidanyl-cyclohexylidene]ethenyl]-6,11,15-trimethyl-16-oxidanylidene-17-[(1~{S},4~{S},6~{R})-2,2,6-trimethyl-4-oxidanyl-7-oxabicyclo[4.1.0]heptan-1-yl]heptadeca-2,4,6,8,10,12,14-heptaenyl] hexanoatenon-polymer773.042Chemie (A1EB1)
48CJ, JL, OP
(M, P, W)
[(2~{Z},4~{E},6~{E},8~{E},10~{E},12~{E},14~{E})-17-[(4~{S},6~{R})-4-acetyloxy-2,2,6-trimethyl-6-oxidanyl-cyclohexylidene]-6,11,15-trimethyl-2-[2-[(1~{R},4~{S},6~{R})-2,2,6-trimethyl-4-oxidanyl-7-oxabicyclo[4.1.0]heptan-1-yl]ethynyl]heptadeca-2,4,6,8,10,12,14,16-octaenyl] dodecanoatenon-polymer839.23Chemie (A1EB4)
49AX, BX, CX, FW, IW...
(l, m, f, i, j...)
BETA-CAROTENEnon-polymer536.920Chemie (BCR)
50XT, ZV
(a, b)
PHYLLOQUINONEnon-polymer450.72Chemie (PQN)
51BW, CW, GU
(c, b)
IRON/SULFUR CLUSTERnon-polymer351.63Chemie (SF4)
52AW
(b)
DIGALACTOSYL DIACYL GLYCEROL (DGDG)non-polymer949.31Chemie (DGD)
Sequence modifications
C: 1 - 208 (UniProt: A0A6V2SE28)
PDBExternal DatabaseDetails
Ala 103Val 128conflict
Glu 104Asp 129conflict
e: 1 - 131 (UniProt: R1EZZ6)
PDBExternal DatabaseDetails
Ala 81Pro 81conflict
Thr 85Pro 85conflict
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains48
Total formula weight1149908.8
Non-Polymers*Number of molecules790
Total formula weight605076.7
All*Total formula weight1754985.5
*Water molecules are not included.

247536

PDB entries from 2026-01-14

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