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1Q9I

The A251C:S430C double mutant of flavocytochrome c3 from Shewanella frigidimarina

Functional Information from GO Data
ChainGOidnamespacecontents
A0010181molecular_functionFMN binding
A0016491molecular_functionoxidoreductase activity
A0016627molecular_functionoxidoreductase activity, acting on the CH-CH group of donors
A0042597cellular_componentperiplasmic space
A0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE NA A 9810
ChainResidue
ATHR506
AMET507
AGLY508
AGLU534
ATHR536
AHOH9826

site_idAC2
Number of Residues12
DetailsBINDING SITE FOR RESIDUE HEC A 801
ChainResidue
ALEU24
ASER73
AALA74
AHIS75
AHOH1005
AHOH1448
AHOH1482
AHOH9978
AHOH9996
ACYS14
ACYS17
AHIS18

site_idAC3
Number of Residues19
DetailsBINDING SITE FOR RESIDUE HEC A 802
ChainResidue
ALEU4
APHE7
AHIS8
AGLN12
ASER16
AGLN35
ACYS36
ACYS39
AHIS40
AHIS72
ATYR94
AHEC803
AHOH1183
AHOH1325
AHOH1350
AHOH1427
AHOH1701
AHOH1945
AHOH1982

site_idAC4
Number of Residues20
DetailsBINDING SITE FOR RESIDUE HEC A 803
ChainResidue
AHIS40
ALEU43
AHIS52
AALA57
AHIS58
AVAL66
AALA67
ACYS68
ACYS71
AHIS72
APHE90
AASN91
AMET92
AHEC802
AHEC804
AHOH1475
AHOH1790
AHOH1792
AHOH9918
AHOH9994

site_idAC5
Number of Residues25
DetailsBINDING SITE FOR RESIDUE HEC A 804
ChainResidue
AHIS54
AASN56
ASER60
AHIS61
APHE62
ACYS82
ASER84
ACYS85
AHIS86
APHE88
ALEU167
AGLN338
AVAL374
ALYS431
ALYS434
ATYR435
AHEC803
AHOH1013
AHOH1101
AHOH1170
AHOH1528
AHOH1741
AHOH9845
AHOH9876
AHOH9898

site_idAC6
Number of Residues44
DetailsBINDING SITE FOR RESIDUE FAD A 9805
ChainResidue
ATHR276
AARG277
AGLY278
AALA312
ATHR313
AGLY314
ATHR336
AASN337
AGLN338
AASP344
AMET375
AHIS504
AHIS505
AGLY533
AGLU534
AARG544
AGLY547
AASN548
AALA549
AILE550
AILE553
ATEO9806
AHOH9812
AHOH9814
AHOH9815
AHOH9816
AHOH9834
AVAL132
AGLY133
AGLY135
AGLY136
AALA137
AGLU156
ALYS157
AGLU158
AGLY162
AGLY163
AASN164
AALA165
ALEU167
AALA168
AALA169
AGLY170
AGLY171

site_idAC7
Number of Residues13
DetailsBINDING SITE FOR RESIDUE TEO A 9806
ChainResidue
AALA169
AGLY170
AMET236
AHIS365
AMET375
ATHR377
AGLU378
AARG402
AHIS504
AARG544
AGLY546
AGLY547
AFAD9805

Functional Information from PROSITE/UniProt
site_idPS00028
Number of Residues23
DetailsZINC_FINGER_C2H2_1 Zinc finger C2H2 type domain signature. Cvs..ChgtLaevaettkHehynaH
ChainResidueDetails
ACYS36-HIS58

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues24
DetailsSignal: {"evidences":[{"source":"PubMed","id":"1333793","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"UniProtKB","id":"P0C278","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues8
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"UniProtKB","id":"P83223","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues8
DetailsBinding site: {"description":"covalent","evidences":[{"source":"UniProtKB","id":"P83223","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues20
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P83223","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues4
DetailsAnnotated By Reference To The Literature 1d4c
ChainResidueDetails
AHIS504
AARG544
AHIS365
AARG402

site_idMCSA1
Number of Residues7
DetailsM-CSA 20
ChainResidueDetails
AARG390increase acidity
AASP403proton acceptor, proton donor, proton relay
ASER406proton acceptor, proton donor, proton relay
ALYS427proton acceptor, proton donor
ALEU529electrostatic stabiliser, proton acceptor, proton donor
ATYR530electrostatic stabiliser
AARG544steric role

238895

PDB entries from 2025-07-16

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