eF-site ID 2axt-a
PDB Code 2axt
Chain a

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Title Crystal Structure of Photosystem II from Thermosynechococcus elongatus
Classification ELECTRON TRANSPORT
Compound Photosystem Q(B) protein
Source ORGANISM_SCIENTIFIC: Thermosynechococcus elongatus;
Sequence a:  SANLWERFCNWVTSTDNRLYVGWFGVIMIPTLLAATICFV
IAFIAAPPVDIDGIREPVSGSLLYGNNIITGAVVPSSNAI
GLHFYPIWEAASLDEWLYNGGPYQLIIFHFLLGASCYMGR
QWELSYRLGMRPWICVAYSAPLASAFAVFLIYPIGQGSFS
DGMPLGISGTFNFMIVFQAEHNILMHPFHQLGVAGVFGGA
LFCAMHGSLVTSSLIRETTETESANYGYKFGQEEETYNIV
AAHGYFGRLIFQYASFNNSRSLHFFLAAWPVVGVWFTALG
ISTMAFNLNGFNFNHSVIDAKGNVINTWADIINRANLGME
VMHERNAHNFPLDLA
Description (1)  Photosystem


Functional site

1) chain a
residue 5215
type
sequence H
description BINDING SITE FOR RESIDUE FE2 a 5557
source : AC5

2) chain a
residue 5272
type
sequence H
description BINDING SITE FOR RESIDUE FE2 a 5557
source : AC5

3) chain a
residue 5215
type
sequence H
description BINDING SITE FOR RESIDUE BCT d 5353
source : AC6

4) chain a
residue 5244
type
sequence E
description BINDING SITE FOR RESIDUE BCT d 5353
source : AC6

5) chain a
residue 5246
type
sequence Y
description BINDING SITE FOR RESIDUE BCT d 5353
source : AC6

6) chain a
residue 5272
type
sequence H
description BINDING SITE FOR RESIDUE BCT d 5353
source : AC6

7) chain a
residue 5020
type
sequence W
description BINDING SITE FOR RESIDUE SQD a 212
source : HC8

8) chain a
residue 5026
type
sequence N
description BINDING SITE FOR RESIDUE SQD a 212
source : HC8

9) chain a
residue 5027
type
sequence R
description BINDING SITE FOR RESIDUE SQD a 212
source : HC8

10) chain a
residue 5028
type
sequence L
description BINDING SITE FOR RESIDUE SQD a 212
source : HC8

11) chain a
residue 5119
type
sequence F
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

12) chain a
residue 5147
type
sequence Y
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

13) chain a
residue 5150
type
sequence P
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

14) chain a
residue 5153
type
sequence S
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

15) chain a
residue 5157
type
sequence V
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

16) chain a
residue 5183
type
sequence M
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

17) chain a
residue 5184
type
sequence I
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

18) chain a
residue 5186
type
sequence F
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

19) chain a
residue 5187
type
sequence Q
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

20) chain a
residue 5193
type
sequence L
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

21) chain a
residue 5198
type
sequence H
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

22) chain a
residue 5201
type
sequence G
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

23) chain a
residue 5205
type
sequence V
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

24) chain a
residue 5286
type
sequence T
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

25) chain a
residue 5290
type
sequence I
description BINDING SITE FOR RESIDUE CLA a 5558
source : IC5

26) chain a
residue 5183
type
sequence M
description BINDING SITE FOR RESIDUE CLA d 5354
source : IC6

27) chain a
residue 5206
type
sequence F
description BINDING SITE FOR RESIDUE CLA d 5354
source : IC6

28) chain a
residue 5045
type
sequence T
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

29) chain a
residue 5157
type
sequence V
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

30) chain a
residue 5158
type
sequence F
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

31) chain a
residue 5172
type
sequence M
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

32) chain a
residue 5176
type
sequence I
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

33) chain a
residue 5179
type
sequence T
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

34) chain a
residue 5180
type
sequence F
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

35) chain a
residue 5183
type
sequence M
description BINDING SITE FOR RESIDUE CLA a 5559
source : IC7

36) chain a
residue 5199
type
sequence Q
description BINDING SITE FOR RESIDUE CLA a 5560
source : IC8

37) chain a
residue 5202
type
sequence V
description BINDING SITE FOR RESIDUE CLA a 5560
source : IC8

38) chain a
residue 5203
type
sequence A
description BINDING SITE FOR RESIDUE CLA a 5560
source : IC8

39) chain a
residue 5207
type
sequence G
description BINDING SITE FOR RESIDUE CLA a 5560
source : IC8

40) chain a
residue 5210
type
sequence L
description BINDING SITE FOR RESIDUE CLA a 5560
source : IC8

41) chain a
residue 5278
type
sequence W
description BINDING SITE FOR RESIDUE CLA a 5560
source : IC8

42) chain a
residue 5041
type
sequence L
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

43) chain a
residue 5044
type
sequence A
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

44) chain a
residue 5045
type
sequence T
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

45) chain a
residue 5115
type
sequence I
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

46) chain a
residue 5119
type
sequence F
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

47) chain a
residue 5126
type
sequence Y
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

48) chain a
residue 5130
type
sequence Q
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

49) chain a
residue 5147
type
sequence Y
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

50) chain a
residue 5150
type
sequence P
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

51) chain a
residue 5158
type
sequence F
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

52) chain a
residue 5174
type
sequence L
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

53) chain a
residue 5279
type
sequence P
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

54) chain a
residue 5283
type
sequence V
description BINDING SITE FOR RESIDUE PHO a 5561
source : IC9

55) chain a
residue 5206
type
sequence F
description BINDING SITE FOR RESIDUE PHO a 5562
source : JC1

56) chain a
residue 5209
type
sequence A
description BINDING SITE FOR RESIDUE PHO a 5562
source : JC1

57) chain a
residue 5210
type
sequence L
description BINDING SITE FOR RESIDUE PHO a 5562
source : JC1

58) chain a
residue 5213
type
sequence A
description BINDING SITE FOR RESIDUE PHO a 5562
source : JC1

59) chain a
residue 5214
type
sequence M
description BINDING SITE FOR RESIDUE PHO a 5562
source : JC1

60) chain a
residue 5258
type
sequence L
description BINDING SITE FOR RESIDUE PHO a 5562
source : JC1

61) chain a
residue 5036
type
sequence I
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

62) chain a
residue 5039
type
sequence P
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

63) chain a
residue 5040
type
sequence T
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

64) chain a
residue 5093
type
sequence F
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

65) chain a
residue 5095
type
sequence P
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

66) chain a
residue 5096
type
sequence I
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

67) chain a
residue 5097
type
sequence W
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

68) chain a
residue 5114
type
sequence L
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

69) chain a
residue 5117
type
sequence F
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

70) chain a
residue 5118
type
sequence H
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

71) chain a
residue 5121
type
sequence L
description BINDING SITE FOR RESIDUE CLA a 5563
source : JC2

72) chain a
residue 5036
type
sequence I
description BINDING SITE FOR RESIDUE CLA c 5495
source : LC6

73) chain a
residue 5124
type
sequence S
description BINDING SITE FOR RESIDUE CLA c 5495
source : LC6

74) chain a
residue 5127
type
sequence M
description BINDING SITE FOR RESIDUE CLA c 5495
source : LC6

75) chain a
residue 5131
type
sequence W
description BINDING SITE FOR RESIDUE CLA c 5495
source : LC6

76) chain a
residue 5215
type
sequence H
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

77) chain a
residue 5218
type
sequence L
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

78) chain a
residue 5251
type
sequence A
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

79) chain a
residue 5252
type
sequence H
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

80) chain a
residue 5255
type
sequence F
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

81) chain a
residue 5264
type
sequence S
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

82) chain a
residue 5265
type
sequence F
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

83) chain a
residue 5271
type
sequence L
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

84) chain a
residue 5274
type
sequence F
description BINDING SITE FOR RESIDUE PQ9 a 5564
source : MC9

85) chain a
residue 5170
type
sequence D
description BINDING SITE FOR RESIDUE OEC a 5565
source : NC1

86) chain a
residue 5189
type
sequence E
description BINDING SITE FOR RESIDUE OEC a 5565
source : NC1

87) chain a
residue 5332
type
sequence H
description BINDING SITE FOR RESIDUE OEC a 5565
source : NC1

88) chain a
residue 5333
type
sequence E
description BINDING SITE FOR RESIDUE OEC a 5565
source : NC1

89) chain a
residue 5342
type
sequence D
description BINDING SITE FOR RESIDUE OEC a 5565
source : NC1

90) chain a
residue 5344
type
sequence A
description BINDING SITE FOR RESIDUE OEC a 5565
source : NC1

91) chain a
residue 5038
type
sequence I
description BINDING SITE FOR RESIDUE BCR a 5566
source : NC2

92) chain a
residue 5043
type
sequence A
description BINDING SITE FOR RESIDUE BCR a 5566
source : NC2

93) chain a
residue 5051
type
sequence A
description BINDING SITE FOR RESIDUE BCR a 5566
source : NC2

94) chain a
residue 5054
type
sequence A
description BINDING SITE FOR RESIDUE BCR a 5566
source : NC2

95) chain a
residue 5105
type
sequence W
description BINDING SITE FOR RESIDUE BCR a 5566
source : NC2

96) chain a
residue 5093
type
sequence F
description BINDING SITE FOR RESIDUE MGE i 5201
source : OC4

97) chain a
residue 5097
type
sequence W
description BINDING SITE FOR RESIDUE MGE i 5201
source : OC4

98) chain a
residue 5121
type
sequence L
description BINDING SITE FOR RESIDUE MGE i 5201
source : OC4

99) chain a
residue 5155
type
sequence F
description BINDING SITE FOR RESIDUE DGD c 5507
source : OC5

100) chain a
residue 5160
type
sequence I
description BINDING SITE FOR RESIDUE DGD c 5507
source : OC5

101) chain a
residue 5163
type
sequence I
description BINDING SITE FOR RESIDUE DGD c 5507
source : OC5

102) chain a
residue 5140
type
sequence R
description BINDING SITE FOR RESIDUE LHG a 5567
source : OC6

103) chain a
residue 5142
type
sequence W
description BINDING SITE FOR RESIDUE LHG a 5567
source : OC6

104) chain a
residue 5273
type
sequence F
description BINDING SITE FOR RESIDUE LHG a 5567
source : OC6

105) chain a
residue 5267
type
sequence N
description BINDING SITE FOR RESIDUE SQD d 5358
source : OC7

106) chain a
residue 5270
type
sequence S
description BINDING SITE FOR RESIDUE SQD d 5358
source : OC7

107) chain a
residue 5274
type
sequence F
description BINDING SITE FOR RESIDUE SQD d 5358
source : OC7

108) chain a
residue 5197
type
sequence F
description BINDING SITE FOR RESIDUE DGD c 5508
source : OC8

109) chain a
residue 5199
type
sequence Q
description BINDING SITE FOR RESIDUE DGD c 5509
source : OC9

110) chain a
residue 5200
type
sequence L
description BINDING SITE FOR RESIDUE DGD c 5509
source : OC9

111) chain a
residue 5300
type
sequence F
description BINDING SITE FOR RESIDUE DGD c 5509
source : OC9

112) chain a
residue 5301
type
sequence N
description BINDING SITE FOR RESIDUE DGD c 5509
source : OC9

113) chain a
residue 5305
type
sequence S
description BINDING SITE FOR RESIDUE DGD c 5509
source : OC9

114) chain a
residue 5232
type
sequence S
description BINDING SITE FOR RESIDUE MGE l 5210
source : PC4

115) chain a
residue 5234
type
sequence N
description BINDING SITE FOR RESIDUE MGE l 5210
source : PC4

116) chain a
residue 5050
type
sequence I
description BINDING SITE FOR RESIDUE LMT a 5568
source : PC9

117) chain a
residue 5072
type
sequence L
description BINDING SITE FOR RESIDUE LMT a 5568
source : PC9

118) chain a
residue 5073
type
sequence Y
description BINDING SITE FOR RESIDUE LMT a 5568
source : PC9

119) chain a
residue 5072
type
sequence L
description BINDING SITE FOR RESIDUE LMT t 5217
source : QC2

120) chain a
residue 5332
type BINDING
sequence H
description axial binding residue => ECO:0000255|HAMAP-Rule:MF_01383, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:19219048, ECO:0000303|PubMed:14764885, ECO:0000303|PubMed:20558739, ECO:0000303|PubMed:21367867, ECO:0000303|PubMed:22665786, ECO:0000303|PubMed:23413188, ECO:0000303|DOI:10.1039/B406989G
source Swiss-Prot : SWS_FT_FI4

121) chain a
residue 5333
type BINDING
sequence E
description axial binding residue => ECO:0000255|HAMAP-Rule:MF_01383, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:19219048, ECO:0000303|PubMed:14764885, ECO:0000303|PubMed:20558739, ECO:0000303|PubMed:21367867, ECO:0000303|PubMed:22665786, ECO:0000303|PubMed:23413188, ECO:0000303|DOI:10.1039/B406989G
source Swiss-Prot : SWS_FT_FI4

122) chain a
residue 5170
type BINDING
sequence D
description axial binding residue => ECO:0000255|HAMAP-Rule:MF_01383, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:19219048, ECO:0000303|PubMed:14764885, ECO:0000303|PubMed:20558739, ECO:0000303|PubMed:21367867, ECO:0000303|PubMed:22665786, ECO:0000303|PubMed:23413188, ECO:0000303|DOI:10.1039/B406989G
source Swiss-Prot : SWS_FT_FI4

123) chain a
residue 5189
type BINDING
sequence E
description axial binding residue => ECO:0000255|HAMAP-Rule:MF_01383, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:19219048, ECO:0000303|PubMed:14764885, ECO:0000303|PubMed:20558739, ECO:0000303|PubMed:21367867, ECO:0000303|PubMed:22665786, ECO:0000303|PubMed:23413188, ECO:0000303|DOI:10.1039/B406989G
source Swiss-Prot : SWS_FT_FI4

124) chain a
residue 5197-5218
type TOPO_DOM
sequence FHQLGVAGVFGGALFCAMHGSL
description Cytoplasmic => ECO:0000269|PubMed:33846594, ECO:0007744|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI1

125) chain a
residue 5274-5288
type TOPO_DOM
sequence FLAAWPVVGVWFTAL
description Cytoplasmic => ECO:0000269|PubMed:33846594, ECO:0007744|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI1

126) chain a
residue 5133-5142
type TOPO_DOM
sequence LSYRLGMRPW
description Cytoplasmic => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI11

127) chain a
residue 5218-5272
type TOPO_DOM
sequence LVTSSLIRETTETESANYGYKFGQEEETYNIVAAHGYFGR
LIFQYASFNNSRSLH
description Cytoplasmic => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI11

128) chain a
residue 5111-5132
type TRANSMEM
sequence PYQLIIFHFLLGASCYMGRQWE
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

129) chain a
residue 5143-5163
type TRANSMEM
sequence ICVAYSAPLASAFAVFLIYPI
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

130) chain a
residue 5192-5217
type TRANSMEM
sequence ILMHPFHQLGVAGVFGGALFCAMHGS
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

131) chain a
residue 5273-5295
type TRANSMEM
sequence FFLAAWPVVGVWFTALGISTMAF
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

132) chain a
residue 5032-5053
type TRANSMEM
sequence WFGVIMIPTLLAATICFVIAFI
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

133) chain a
residue 5054-5110
type TOPO_DOM
sequence AAPPVDIDGIREPVSGSLLYGNNIITGAVVPSSNAIGLHF
YPIWEAASLDEWLYNGG
description Lumenal => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI13

134) chain a
residue 5164-5191
type TOPO_DOM
sequence GQGSFSDGMPLGISGTFNFMIVFQAEHN
description Lumenal => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI13

135) chain a
residue 5296-5344
type TOPO_DOM
sequence NLNGFNFNHSVIDAKGNVINTWADIINRANLGMEVMHERN
AHNFPLDLA
description Lumenal => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI13

136) chain a
residue 5130
type BINDING
sequence Q
description BINDING => ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:19219048, ECO:0000303|PubMed:14764885, ECO:0000303|PubMed:20558739, ECO:0000303|PubMed:21367867, ECO:0000303|PubMed:22665786, ECO:0000303|PubMed:23413188, ECO:0000303|PubMed:25006873, ECO:0000303|PubMed:25043005, ECO:0000303|DOI:10.1039/B406989G
source Swiss-Prot : SWS_FT_FI14

137) chain a
residue 5147
type BINDING
sequence Y
description BINDING => ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:19219048, ECO:0000303|PubMed:14764885, ECO:0000303|PubMed:21367867, ECO:0000303|PubMed:22665786, ECO:0000303|PubMed:23413188, ECO:0000303|PubMed:25006873, ECO:0000303|PubMed:25043005, ECO:0000303|DOI:10.1039/B406989G
source Swiss-Prot : SWS_FT_FI15


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