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 215
type
sequence H
description BINDING SITE FOR RESIDUE FE2 A 557
source : AC2

2) chain A
residue 272
type
sequence H
description BINDING SITE FOR RESIDUE FE2 A 557
source : AC2

3) chain A
residue 215
type
sequence H
description BINDING SITE FOR RESIDUE BCT D 353
source : AC3

4) chain A
residue 244
type
sequence E
description BINDING SITE FOR RESIDUE BCT D 353
source : AC3

5) chain A
residue 246
type
sequence Y
description BINDING SITE FOR RESIDUE BCT D 353
source : AC3

6) chain A
residue 272
type
sequence H
description BINDING SITE FOR RESIDUE BCT D 353
source : AC3

7) chain A
residue 119
type
sequence F
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

8) chain A
residue 147
type
sequence Y
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

9) chain A
residue 150
type
sequence P
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

10) chain A
residue 153
type
sequence S
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

11) chain A
residue 157
type
sequence V
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

12) chain A
residue 183
type
sequence M
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

13) chain A
residue 184
type
sequence I
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

14) chain A
residue 186
type
sequence F
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

15) chain A
residue 187
type
sequence Q
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

16) chain A
residue 193
type
sequence L
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

17) chain A
residue 198
type
sequence H
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

18) chain A
residue 201
type
sequence G
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

19) chain A
residue 205
type
sequence V
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

20) chain A
residue 286
type
sequence T
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

21) chain A
residue 290
type
sequence I
description BINDING SITE FOR RESIDUE CLA A 558
source : AC7

22) chain A
residue 183
type
sequence M
description BINDING SITE FOR RESIDUE CLA D 354
source : AC8

23) chain A
residue 206
type
sequence F
description BINDING SITE FOR RESIDUE CLA D 354
source : AC8

24) chain A
residue 45
type
sequence T
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

25) chain A
residue 157
type
sequence V
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

26) chain A
residue 158
type
sequence F
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

27) chain A
residue 172
type
sequence M
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

28) chain A
residue 176
type
sequence I
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

29) chain A
residue 179
type
sequence T
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

30) chain A
residue 180
type
sequence F
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

31) chain A
residue 183
type
sequence M
description BINDING SITE FOR RESIDUE CLA A 559
source : AC9

32) chain A
residue 199
type
sequence Q
description BINDING SITE FOR RESIDUE CLA A 560
source : BC1

33) chain A
residue 202
type
sequence V
description BINDING SITE FOR RESIDUE CLA A 560
source : BC1

34) chain A
residue 203
type
sequence A
description BINDING SITE FOR RESIDUE CLA A 560
source : BC1

35) chain A
residue 207
type
sequence G
description BINDING SITE FOR RESIDUE CLA A 560
source : BC1

36) chain A
residue 210
type
sequence L
description BINDING SITE FOR RESIDUE CLA A 560
source : BC1

37) chain A
residue 278
type
sequence W
description BINDING SITE FOR RESIDUE CLA A 560
source : BC1

38) chain A
residue 41
type
sequence L
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

39) chain A
residue 44
type
sequence A
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

40) chain A
residue 45
type
sequence T
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

41) chain A
residue 115
type
sequence I
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

42) chain A
residue 119
type
sequence F
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

43) chain A
residue 126
type
sequence Y
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

44) chain A
residue 130
type
sequence Q
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

45) chain A
residue 147
type
sequence Y
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

46) chain A
residue 150
type
sequence P
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

47) chain A
residue 158
type
sequence F
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

48) chain A
residue 174
type
sequence L
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

49) chain A
residue 279
type
sequence P
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

50) chain A
residue 283
type
sequence V
description BINDING SITE FOR RESIDUE PHO A 561
source : BC2

51) chain A
residue 206
type
sequence F
description BINDING SITE FOR RESIDUE PHO A 562
source : BC3

52) chain A
residue 209
type
sequence A
description BINDING SITE FOR RESIDUE PHO A 562
source : BC3

53) chain A
residue 210
type
sequence L
description BINDING SITE FOR RESIDUE PHO A 562
source : BC3

54) chain A
residue 213
type
sequence A
description BINDING SITE FOR RESIDUE PHO A 562
source : BC3

55) chain A
residue 214
type
sequence M
description BINDING SITE FOR RESIDUE PHO A 562
source : BC3

56) chain A
residue 258
type
sequence L
description BINDING SITE FOR RESIDUE PHO A 562
source : BC3

57) chain A
residue 36
type
sequence I
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

58) chain A
residue 39
type
sequence P
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

59) chain A
residue 93
type
sequence F
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

60) chain A
residue 95
type
sequence P
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

61) chain A
residue 96
type
sequence I
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

62) chain A
residue 97
type
sequence W
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

63) chain A
residue 114
type
sequence L
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

64) chain A
residue 117
type
sequence F
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

65) chain A
residue 118
type
sequence H
description BINDING SITE FOR RESIDUE CLA A 563
source : BC4

66) chain A
residue 36
type
sequence I
description BINDING SITE FOR RESIDUE CLA C 495
source : DC8

67) chain A
residue 124
type
sequence S
description BINDING SITE FOR RESIDUE CLA C 495
source : DC8

68) chain A
residue 127
type
sequence M
description BINDING SITE FOR RESIDUE CLA C 495
source : DC8

69) chain A
residue 131
type
sequence W
description BINDING SITE FOR RESIDUE CLA C 495
source : DC8

70) chain A
residue 215
type
sequence H
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

71) chain A
residue 218
type
sequence L
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

72) chain A
residue 251
type
sequence A
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

73) chain A
residue 252
type
sequence H
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

74) chain A
residue 255
type
sequence F
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

75) chain A
residue 264
type
sequence S
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

76) chain A
residue 265
type
sequence F
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

77) chain A
residue 271
type
sequence L
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

78) chain A
residue 274
type
sequence F
description BINDING SITE FOR RESIDUE PQ9 A 564
source : FC2

79) chain A
residue 170
type
sequence D
description BINDING SITE FOR RESIDUE OEC A 565
source : FC3

80) chain A
residue 189
type
sequence E
description BINDING SITE FOR RESIDUE OEC A 565
source : FC3

81) chain A
residue 332
type
sequence H
description BINDING SITE FOR RESIDUE OEC A 565
source : FC3

82) chain A
residue 333
type
sequence E
description BINDING SITE FOR RESIDUE OEC A 565
source : FC3

83) chain A
residue 342
type
sequence D
description BINDING SITE FOR RESIDUE OEC A 565
source : FC3

84) chain A
residue 344
type
sequence A
description BINDING SITE FOR RESIDUE OEC A 565
source : FC3

85) chain A
residue 38
type
sequence I
description BINDING SITE FOR RESIDUE BCR A 566
source : FC4

86) chain A
residue 43
type
sequence A
description BINDING SITE FOR RESIDUE BCR A 566
source : FC4

87) chain A
residue 51
type
sequence A
description BINDING SITE FOR RESIDUE BCR A 566
source : FC4

88) chain A
residue 54
type
sequence A
description BINDING SITE FOR RESIDUE BCR A 566
source : FC4

89) chain A
residue 105
type
sequence W
description BINDING SITE FOR RESIDUE BCR A 566
source : FC4

90) chain A
residue 93
type
sequence F
description BINDING SITE FOR RESIDUE MGE I 201
source : GC6

91) chain A
residue 97
type
sequence W
description BINDING SITE FOR RESIDUE MGE I 201
source : GC6

92) chain A
residue 121
type
sequence L
description BINDING SITE FOR RESIDUE MGE I 201
source : GC6

93) chain A
residue 155
type
sequence F
description BINDING SITE FOR RESIDUE DGD C 507
source : GC7

94) chain A
residue 160
type
sequence I
description BINDING SITE FOR RESIDUE DGD C 507
source : GC7

95) chain A
residue 163
type
sequence I
description BINDING SITE FOR RESIDUE DGD C 507
source : GC7

96) chain A
residue 140
type
sequence R
description BINDING SITE FOR RESIDUE LHG A 567
source : GC8

97) chain A
residue 142
type
sequence W
description BINDING SITE FOR RESIDUE LHG A 567
source : GC8

98) chain A
residue 273
type
sequence F
description BINDING SITE FOR RESIDUE LHG A 567
source : GC8

99) chain A
residue 267
type
sequence N
description BINDING SITE FOR RESIDUE SQD A 568
source : GC9

100) chain A
residue 270
type
sequence S
description BINDING SITE FOR RESIDUE SQD A 568
source : GC9

101) chain A
residue 273
type
sequence F
description BINDING SITE FOR RESIDUE SQD A 568
source : GC9

102) chain A
residue 274
type
sequence F
description BINDING SITE FOR RESIDUE SQD A 568
source : GC9

103) chain A
residue 197
type
sequence F
description BINDING SITE FOR RESIDUE DGD C 508
source : HC1

104) chain A
residue 199
type
sequence Q
description BINDING SITE FOR RESIDUE DGD C 509
source : HC2

105) chain A
residue 200
type
sequence L
description BINDING SITE FOR RESIDUE DGD C 509
source : HC2

106) chain A
residue 300
type
sequence F
description BINDING SITE FOR RESIDUE DGD C 509
source : HC2

107) chain A
residue 301
type
sequence N
description BINDING SITE FOR RESIDUE DGD C 509
source : HC2

108) chain A
residue 302
type
sequence F
description BINDING SITE FOR RESIDUE DGD C 509
source : HC2

109) chain A
residue 305
type
sequence S
description BINDING SITE FOR RESIDUE DGD C 509
source : HC2

110) chain A
residue 234
type
sequence N
description BINDING SITE FOR RESIDUE MGE D 359
source : HC5

111) chain A
residue 232
type
sequence S
description BINDING SITE FOR RESIDUE MGE L 210
source : HC6

112) chain A
residue 234
type
sequence N
description BINDING SITE FOR RESIDUE MGE L 210
source : HC6

113) chain A
residue 50
type
sequence I
description BINDING SITE FOR RESIDUE LMT A 569
source : IC2

114) chain A
residue 72
type
sequence L
description BINDING SITE FOR RESIDUE LMT A 569
source : IC2

115) chain A
residue 73
type
sequence Y
description BINDING SITE FOR RESIDUE LMT A 569
source : IC2

116) chain A
residue 72
type
sequence L
description BINDING SITE FOR RESIDUE LMT T 217
source : IC4

117) chain A
residue 20
type
sequence W
description BINDING SITE FOR RESIDUE SQD A 5212
source : PC6

118) chain A
residue 26
type
sequence N
description BINDING SITE FOR RESIDUE SQD A 5212
source : PC6

119) chain A
residue 27
type
sequence R
description BINDING SITE FOR RESIDUE SQD A 5212
source : PC6

120) chain A
residue 28
type
sequence L
description BINDING SITE FOR RESIDUE SQD A 5212
source : PC6

121) chain A
residue 332
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

122) chain A
residue 333
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

123) chain A
residue 133-142
type TOPO_DOM
sequence LSYRLGMRPW
description Cytoplasmic => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI11

124) chain A
residue 218-272
type TOPO_DOM
sequence LVTSSLIRETTETESANYGYKFGQEEETYNIVAAHGYFGR
LIFQYASFNNSRSLH
description Cytoplasmic => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI11

125) chain A
residue 32-53
type TRANSMEM
sequence WFGVIMIPTLLAATICFVIAFI
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

126) chain A
residue 111-132
type TRANSMEM
sequence PYQLIIFHFLLGASCYMGRQWE
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

127) chain A
residue 143-163
type TRANSMEM
sequence ICVAYSAPLASAFAVFLIYPI
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

128) chain A
residue 192-217
type TRANSMEM
sequence ILMHPFHQLGVAGVFGGALFCAMHGS
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

129) chain A
residue 273-295
type TRANSMEM
sequence FFLAAWPVVGVWFTALGISTMAF
description Helical => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI12

130) chain A
residue 54-110
type TOPO_DOM
sequence AAPPVDIDGIREPVSGSLLYGNNIITGAVVPSSNAIGLHF
YPIWEAASLDEWLYNGG
description Lumenal => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI13

131) chain A
residue 164-191
type TOPO_DOM
sequence GQGSFSDGMPLGISGTFNFMIVFQAEHN
description Lumenal => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI13

132) chain A
residue 296-344
type TOPO_DOM
sequence NLNGFNFNHSVIDAKGNVINTWADIINRANLGMEVMHERN
AHNFPLDLA
description Lumenal => ECO:0000269|PubMed:33846594, ECO:0000312|PDB:7NHQ
source Swiss-Prot : SWS_FT_FI13

133) chain A
residue 130
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

134) chain A
residue 147
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

135) chain A
residue 191-217
type prosite
sequence NILMHPFHQLGVAGVFGGALFCAMHGS
description REACTION_CENTER Photosynthetic reaction center proteins signature. NilmhPfHqlGvagvfggalfcAmHGS
source prosite : PS00244


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