Structure analysis

Cryo-EM structure of haptophyte photosystem I

Electron Microscopy
2.74Å resolution
Source organism: Isochrysis galbana
Assembly composition:
hetero 35-mer (preferred)
Entry contents: 31 distinct polypeptide molecules

Assemblies

Assembly 1 (preferred)
Download    3D Visualisation
Multimeric state: hetero 35-mer
PDBe Complex ID: PDB-CPX-286400

Macromolecules

Chain: A
Length: 209 amino acids
Theoretical weight: 22.84 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: Q2IA66 (Residues: 3-211; Coverage: 99%)
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: Q2IA66  
120920406080100120140160180200
 
50100150200
UniProt
Q2IA66
Chains
Ligand binding sites
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Chain: B
Length: 209 amino acids
Theoretical weight: 22.26 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: R1D5F1 (Residues: 1-177; Coverage: 99%)
Gene name: EMIHUDRAFT_106967
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: R1D5F1  
120920406080100120140160180200
 
50100150200
UniProt
R1D5F1
Chains
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Chain: C
Length: 205 amino acids
Theoretical weight: 21.89 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3I4E9 (Residues: 1-205; Coverage: 100%)
Gene name: FEHR0123_LOCUS7785
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3I4E9  
120520406080100120140160180200
 
50100150200
UniProt
A0A7S3I4E9
Chains
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Chain: D
Length: 245 amino acids
Theoretical weight: 26.3 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: Q2IA67 (Residues: 1-45, 46-231; Coverage: 100%)
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: Q2IA67  
124520406080100120140160180200220240
 
100200
UniProt
Q2IA67
Chains
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Chain: E
Length: 206 amino acids
Theoretical weight: 21.68 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3TWX6 (Residues: 46-128; Coverage: 59%)
Gene name: EHUX00137_LOCUS45619
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3TWX6  
120620406080100120140160180200
 
50100150200
UniProt
A0A7S3TWX6
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Chain: F
Length: 240 amino acids
Theoretical weight: 25.39 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3X675 (Residues: 17-222; Coverage: 93%)
Gene name: SACU0126_LOCUS32365
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3X675  
124020406080100120140160180200220240
 
100200
UniProt
A0A7S3X675
Chains
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Chain: G
Length: 198 amino acids
Theoretical weight: 20.75 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3MPR6 (Residues: 11-208; Coverage: 100%)
Gene name: FEHR0123_LOCUS6272
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3MPR6  
119820406080100120140160180
 
50100150
UniProt
A0A7S3MPR6
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Chain: H
Length: 198 amino acids
Theoretical weight: 21.41 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: Q2IA65 (Residues: 1-158, 159-193; Coverage: 100%)
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: Q2IA65  
119820406080100120140160180
 
50100150
UniProt
Q2IA65
Chains
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Chain: I
Length: 194 amino acids
Theoretical weight: 21.06 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3IA89 (Residues: 1-178; Coverage: 99%)
Gene name: FEHR0123_LOCUS11472
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3IA89  
119420406080100120140160180
 
50100150
UniProt
A0A7S3IA89
Chains
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Chain: J
Length: 200 amino acids
Theoretical weight: 20.79 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3HZY8 (Residues: 7-206; Coverage: 97%)
Gene name: FEHR0123_LOCUS4570
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3HZY8  
120020406080100120140160180200
 
50100150200
UniProt
A0A7S3HZY8
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Chain: K
Length: 202 amino acids
Theoretical weight: 21.74 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3VX05 (Residues: 13-214; Coverage: 94%)
Gene name: SACU0126_LOCUS2454
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3VX05  
120220406080100120140160180200
 
50100150200
UniProt
A0A7S3VX05
Chains
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Chain: L
Length: 229 amino acids
Theoretical weight: 24.23 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3U1X8 (Residues: 1-229; Coverage: 100%)
Gene name: SACU0126_LOCUS32658
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3U1X8  
122920406080100120140160180200220
 
100200
UniProt
A0A7S3U1X8
Chains
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Chains: M, P, W
Length: 217 amino acids
Theoretical weight: 23.14 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3VXI4 (Residues: 25-241; Coverage: 90%)
Gene name: SACU0126_LOCUS1879
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3VXI4  
121720406080100120140160180200
 
100200
UniProt
A0A7S3VXI4
Chains
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Chain: N
Length: 224 amino acids
Theoretical weight: 23.71 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3TVW9 (Residues: 14-237; Coverage: 94%)
Gene name: SACU0126_LOCUS30997
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3TVW9  
122420406080100120140160180200220
 
100200
UniProt
A0A7S3TVW9
Chains
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Chains: O, R, T
Length: 206 amino acids
Theoretical weight: 21.49 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3I3B1 (Residues: 12-217; Coverage: 95%)
Gene name: FEHR0123_LOCUS7488
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3I3B1  
120620406080100120140160180200
 
50100150200
UniProt
A0A7S3I3B1
Chains
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Chain: Q
Length: 187 amino acids
Theoretical weight: 20.02 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3TXN3 (Residues: 9-14, 15-155; Coverage: 89%)
Gene name: EHUX00137_LOCUS45259
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3TXN3  
118720406080100120140160180
 
50100150
UniProt
A0A7S3TXN3
Chains
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Chain: S
Length: 235 amino acids
Theoretical weight: 25.38 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: Q2IA72 (Residues: 1-3, 4-234; Coverage: 100%)
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: Q2IA72  
123520406080100120140160180200220
 
100200
UniProt
Q2IA72
Chains
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Chain: U
Length: 203 amino acids
Theoretical weight: 21.91 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3RBL6 (Residues: 1-203; Coverage: 100%)
Gene name: SACU0126_LOCUS750
Pfam: Chlorophyll A-B binding protein
PDBe-KB: UniProt Coverage View: A0A7S3RBL6  
120320406080100120140160180200
 
50100150200
UniProt
A0A7S3RBL6
Chains
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Chain: V
Length: 122 amino acids
Theoretical weight: 12.57 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3I2Z7 (Residues: 5-126; Coverage: 99%)
Gene name: FEHR0123_LOCUS7205
PDBe-KB: UniProt Coverage View: A0A7S3I2Z7  
1122102030405060708090100110120
 
50100
UniProt
A0A7S3I2Z7
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Chain: a
Length: 752 amino acids
Theoretical weight: 83.56 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4XMT1 (Residues: 1-752; Coverage: 100%)
Gene name: psaA
Pfam: Photosystem I psaA/psaB protein
PDBe-KB: UniProt Coverage View: A0A7D4XMT1  
1752100200300400500600700
 
200400600
UniProt
A0A7D4XMT1
Chains
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Chain: b
Length: 734 amino acids
Theoretical weight: 82.18 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4X9X4 (Residues: 1-734; Coverage: 100%)
Gene name: psaB
Pfam: Photosystem I psaA/psaB protein
PDBe-KB: UniProt Coverage View: A0A7D4X9X4  
1734100200300400500600700
 
200400600
UniProt
A0A7D4X9X4
Chains
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Chain: c
Length: 81 amino acids
Theoretical weight: 8.8 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4X9R7 (Residues: 1-81; Coverage: 100%)
Gene name: psaC
Pfam: 4Fe-4S dicluster domain
PDBe-KB: UniProt Coverage View: A0A7D4X9R7  
1811020304050607080
 
20406080MSHSVRVYDTCIGCTQCVRACPCDVLEMVPWDGCKAGQIASAPRAEDCIGCKRCETACPTDFLSVRVYLGSETTRSLGLSY
UniProt
A0A7D4X9R7
Chains
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Chain: d
Length: 142 amino acids
Theoretical weight: 15.88 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4XG42 (Residues: 1-142; Coverage: 100%)
Gene name: psaD
Pfam: PsaD
PDBe-KB: UniProt Coverage View: A0A7D4XG42  
1142102030405060708090100110120130140
 
50100
UniProt
A0A7D4XG42
Chains
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Chain: e
Length: 124 amino acids
Theoretical weight: 12.84 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3HV91 (Residues: 15-138; Coverage: 99%)
Gene name: FEHR0123_LOCUS667
Pfam: Photosystem I reaction centre subunit IV / PsaE
PDBe-KB: UniProt Coverage View: A0A7S3HV91  
1124102030405060708090100110120
 
50100
UniProt
A0A7S3HV91
Chains
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Chain: f
Length: 184 amino acids
Theoretical weight: 20.22 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4XMU0 (Residues: 1-184; Coverage: 100%)
Gene name: psaF
Pfam: Photosystem I reaction centre subunit III
PDBe-KB: UniProt Coverage View: A0A7D4XMU0  
118420406080100120140160180
 
50100150
UniProt
A0A7D4XMU0
Chains
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Chain: i
Length: 36 amino acids
Theoretical weight: 3.94 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4X9U5 (Residues: 1-36; Coverage: 100%)
Gene name: psaI
Pfam: Photosystem I reaction centre subunit VIII
PDBe-KB: UniProt Coverage View: A0A7D4X9U5  
1365101520253035
 
102030MSASFLPSILTPLVTLVFPGLCFALFFVLIEQDEIA
UniProt
A0A7D4X9U5
Chains
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Chain: j
Length: 40 amino acids
Theoretical weight: 4.51 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4X9Y3 (Residues: 1-40; Coverage: 100%)
Gene name: psaJ
Pfam: Photosystem I reaction centre subunit IX / PsaJ
PDBe-KB: UniProt Coverage View: A0A7D4X9Y3  
140510152025303540
 
10203040MSNDLLKYLSTAPVLLTAWMSITAGIIIEIQRFFPDSLSF
UniProt
A0A7D4X9Y3
Chains
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Chain: k
Length: 92 amino acids
Theoretical weight: 9.48 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3X4W4 (Residues: 51-144; Coverage: 63%)
Gene name: EHUX00137_LOCUS43374
Pfam: Photosystem I psaG / psaK
PDBe-KB: UniProt Coverage View: A0A7S3X4W4  
192102030405060708090
 
20406080MLDAGHAVDTASQLMAMSLPIPAYSIPKAFIMMFCNVLVISTMTIQGKGLAKGTPHDEMVESFGITWLLAGTALGHIVGAGTILGCSTAGIL
UniProt
A0A7S3X4W4
Chains
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Chain: l
Length: 145 amino acids
Theoretical weight: 15.48 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D5B6G5 (Residues: 1-145; Coverage: 100%)
Gene name: psaL
Pfam: Photosystem I reaction centre subunit XI
PDBe-KB: UniProt Coverage View: A0A7D5B6G5  
114520406080100120140
 
50100
UniProt
A0A7D5B6G5
Chains
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Chain: m
Length: 30 amino acids
Theoretical weight: 3.15 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7D4XMW6 (Residues: 1-30; Coverage: 100%)
Gene name: psaM
Pfam: Photosystem I protein M (PsaM)
PDBe-KB: UniProt Coverage View: A0A7D4XMW6  
13024681012141618202224262830
 
102030MITDGQIFVALCIALTAAILAIGLGRQLYV
UniProt
A0A7D4XMW6
Chains
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Chain: r
Length: 133 amino acids
Theoretical weight: 13.75 KDa
Source organism: Isochrysis galbana
UniProt:
  • Canonical: A0A7S3I921 (Residues: 1-133; Coverage: 99%)
Gene name: FEHR0123_LOCUS11358
PDBe-KB: UniProt Coverage View: A0A7S3I921  
1133102030405060708090100110120130
 
50100
UniProt
A0A7S3I921
Chains
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