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1JY7

THE STRUCTURE OF HUMAN METHEMOGLOBIN. THE VARIATION OF A THEME

Functional Information from GO Data
ChainGOidnamespacecontents
A0004601molecular_functionperoxidase activity
A0005344molecular_functionoxygen carrier activity
A0005506molecular_functioniron ion binding
A0005515molecular_functionprotein binding
A0005576cellular_componentextracellular region
A0005829cellular_componentcytosol
A0005833cellular_componenthemoglobin complex
A0006954biological_processinflammatory response
A0015670biological_processcarbon dioxide transport
A0015671biological_processoxygen transport
A0016020cellular_componentmembrane
A0019825molecular_functionoxygen binding
A0020037molecular_functionheme binding
A0030185biological_processnitric oxide transport
A0031720molecular_functionhaptoglobin binding
A0031838cellular_componenthaptoglobin-hemoglobin complex
A0042542biological_processresponse to hydrogen peroxide
A0042744biological_processhydrogen peroxide catabolic process
A0048821biological_processerythrocyte development
A0070062cellular_componentextracellular exosome
A0071682cellular_componentendocytic vesicle lumen
A0072562cellular_componentblood microparticle
A0098869biological_processcellular oxidant detoxification
B0004601molecular_functionperoxidase activity
B0005344molecular_functionoxygen carrier activity
B0005515molecular_functionprotein binding
B0005576cellular_componentextracellular region
B0005829cellular_componentcytosol
B0005833cellular_componenthemoglobin complex
B0006954biological_processinflammatory response
B0015670biological_processcarbon dioxide transport
B0015671biological_processoxygen transport
B0019825molecular_functionoxygen binding
B0020037molecular_functionheme binding
B0030185biological_processnitric oxide transport
B0030492molecular_functionhemoglobin binding
B0031720molecular_functionhaptoglobin binding
B0031721molecular_functionhemoglobin alpha binding
B0031838cellular_componenthaptoglobin-hemoglobin complex
B0042542biological_processresponse to hydrogen peroxide
B0042744biological_processhydrogen peroxide catabolic process
B0045429biological_processpositive regulation of nitric oxide biosynthetic process
B0048821biological_processerythrocyte development
B0070062cellular_componentextracellular exosome
B0070293biological_processrenal absorption
B0070527biological_processplatelet aggregation
B0071682cellular_componentendocytic vesicle lumen
B0072562cellular_componentblood microparticle
B0098869biological_processcellular oxidant detoxification
B1904724cellular_componenttertiary granule lumen
B1904813cellular_componentficolin-1-rich granule lumen
C0004601molecular_functionperoxidase activity
C0005344molecular_functionoxygen carrier activity
C0005506molecular_functioniron ion binding
C0005515molecular_functionprotein binding
C0005576cellular_componentextracellular region
C0005829cellular_componentcytosol
C0005833cellular_componenthemoglobin complex
C0006954biological_processinflammatory response
C0015670biological_processcarbon dioxide transport
C0015671biological_processoxygen transport
C0016020cellular_componentmembrane
C0019825molecular_functionoxygen binding
C0020037molecular_functionheme binding
C0030185biological_processnitric oxide transport
C0031720molecular_functionhaptoglobin binding
C0031838cellular_componenthaptoglobin-hemoglobin complex
C0042542biological_processresponse to hydrogen peroxide
C0042744biological_processhydrogen peroxide catabolic process
C0048821biological_processerythrocyte development
C0070062cellular_componentextracellular exosome
C0071682cellular_componentendocytic vesicle lumen
C0072562cellular_componentblood microparticle
C0098869biological_processcellular oxidant detoxification
D0004601molecular_functionperoxidase activity
D0005344molecular_functionoxygen carrier activity
D0005515molecular_functionprotein binding
D0005576cellular_componentextracellular region
D0005829cellular_componentcytosol
D0005833cellular_componenthemoglobin complex
D0006954biological_processinflammatory response
D0015670biological_processcarbon dioxide transport
D0015671biological_processoxygen transport
D0019825molecular_functionoxygen binding
D0020037molecular_functionheme binding
D0030185biological_processnitric oxide transport
D0030492molecular_functionhemoglobin binding
D0031720molecular_functionhaptoglobin binding
D0031721molecular_functionhemoglobin alpha binding
D0031838cellular_componenthaptoglobin-hemoglobin complex
D0042542biological_processresponse to hydrogen peroxide
D0042744biological_processhydrogen peroxide catabolic process
D0045429biological_processpositive regulation of nitric oxide biosynthetic process
D0048821biological_processerythrocyte development
D0070062cellular_componentextracellular exosome
D0070293biological_processrenal absorption
D0070527biological_processplatelet aggregation
D0071682cellular_componentendocytic vesicle lumen
D0072562cellular_componentblood microparticle
D0098869biological_processcellular oxidant detoxification
D1904724cellular_componenttertiary granule lumen
D1904813cellular_componentficolin-1-rich granule lumen
P0004601molecular_functionperoxidase activity
P0005344molecular_functionoxygen carrier activity
P0005506molecular_functioniron ion binding
P0005515molecular_functionprotein binding
P0005576cellular_componentextracellular region
P0005829cellular_componentcytosol
P0005833cellular_componenthemoglobin complex
P0006954biological_processinflammatory response
P0015670biological_processcarbon dioxide transport
P0015671biological_processoxygen transport
P0016020cellular_componentmembrane
P0019825molecular_functionoxygen binding
P0020037molecular_functionheme binding
P0030185biological_processnitric oxide transport
P0031720molecular_functionhaptoglobin binding
P0031838cellular_componenthaptoglobin-hemoglobin complex
P0042542biological_processresponse to hydrogen peroxide
P0042744biological_processhydrogen peroxide catabolic process
P0048821biological_processerythrocyte development
P0070062cellular_componentextracellular exosome
P0071682cellular_componentendocytic vesicle lumen
P0072562cellular_componentblood microparticle
P0098869biological_processcellular oxidant detoxification
Q0004601molecular_functionperoxidase activity
Q0005344molecular_functionoxygen carrier activity
Q0005515molecular_functionprotein binding
Q0005576cellular_componentextracellular region
Q0005829cellular_componentcytosol
Q0005833cellular_componenthemoglobin complex
Q0006954biological_processinflammatory response
Q0015670biological_processcarbon dioxide transport
Q0015671biological_processoxygen transport
Q0019825molecular_functionoxygen binding
Q0020037molecular_functionheme binding
Q0030185biological_processnitric oxide transport
Q0030492molecular_functionhemoglobin binding
Q0031720molecular_functionhaptoglobin binding
Q0031721molecular_functionhemoglobin alpha binding
Q0031838cellular_componenthaptoglobin-hemoglobin complex
Q0042542biological_processresponse to hydrogen peroxide
Q0042744biological_processhydrogen peroxide catabolic process
Q0045429biological_processpositive regulation of nitric oxide biosynthetic process
Q0048821biological_processerythrocyte development
Q0070062cellular_componentextracellular exosome
Q0070293biological_processrenal absorption
Q0070527biological_processplatelet aggregation
Q0071682cellular_componentendocytic vesicle lumen
Q0072562cellular_componentblood microparticle
Q0098869biological_processcellular oxidant detoxification
Q1904724cellular_componenttertiary granule lumen
Q1904813cellular_componentficolin-1-rich granule lumen
R0004601molecular_functionperoxidase activity
R0005344molecular_functionoxygen carrier activity
R0005506molecular_functioniron ion binding
R0005515molecular_functionprotein binding
R0005576cellular_componentextracellular region
R0005829cellular_componentcytosol
R0005833cellular_componenthemoglobin complex
R0006954biological_processinflammatory response
R0015670biological_processcarbon dioxide transport
R0015671biological_processoxygen transport
R0016020cellular_componentmembrane
R0019825molecular_functionoxygen binding
R0020037molecular_functionheme binding
R0030185biological_processnitric oxide transport
R0031720molecular_functionhaptoglobin binding
R0031838cellular_componenthaptoglobin-hemoglobin complex
R0042542biological_processresponse to hydrogen peroxide
R0042744biological_processhydrogen peroxide catabolic process
R0048821biological_processerythrocyte development
R0070062cellular_componentextracellular exosome
R0071682cellular_componentendocytic vesicle lumen
R0072562cellular_componentblood microparticle
R0098869biological_processcellular oxidant detoxification
S0004601molecular_functionperoxidase activity
S0005344molecular_functionoxygen carrier activity
S0005515molecular_functionprotein binding
S0005576cellular_componentextracellular region
S0005829cellular_componentcytosol
S0005833cellular_componenthemoglobin complex
S0006954biological_processinflammatory response
S0015670biological_processcarbon dioxide transport
S0015671biological_processoxygen transport
S0019825molecular_functionoxygen binding
S0020037molecular_functionheme binding
S0030185biological_processnitric oxide transport
S0030492molecular_functionhemoglobin binding
S0031720molecular_functionhaptoglobin binding
S0031721molecular_functionhemoglobin alpha binding
S0031838cellular_componenthaptoglobin-hemoglobin complex
S0042542biological_processresponse to hydrogen peroxide
S0042744biological_processhydrogen peroxide catabolic process
S0045429biological_processpositive regulation of nitric oxide biosynthetic process
S0048821biological_processerythrocyte development
S0070062cellular_componentextracellular exosome
S0070293biological_processrenal absorption
S0070527biological_processplatelet aggregation
S0071682cellular_componentendocytic vesicle lumen
S0072562cellular_componentblood microparticle
S0098869biological_processcellular oxidant detoxification
S1904724cellular_componenttertiary granule lumen
S1904813cellular_componentficolin-1-rich granule lumen
U0004601molecular_functionperoxidase activity
U0005344molecular_functionoxygen carrier activity
U0005506molecular_functioniron ion binding
U0005515molecular_functionprotein binding
U0005576cellular_componentextracellular region
U0005829cellular_componentcytosol
U0005833cellular_componenthemoglobin complex
U0006954biological_processinflammatory response
U0015670biological_processcarbon dioxide transport
U0015671biological_processoxygen transport
U0016020cellular_componentmembrane
U0019825molecular_functionoxygen binding
U0020037molecular_functionheme binding
U0030185biological_processnitric oxide transport
U0031720molecular_functionhaptoglobin binding
U0031838cellular_componenthaptoglobin-hemoglobin complex
U0042542biological_processresponse to hydrogen peroxide
U0042744biological_processhydrogen peroxide catabolic process
U0048821biological_processerythrocyte development
U0070062cellular_componentextracellular exosome
U0071682cellular_componentendocytic vesicle lumen
U0072562cellular_componentblood microparticle
U0098869biological_processcellular oxidant detoxification
V0004601molecular_functionperoxidase activity
V0005344molecular_functionoxygen carrier activity
V0005515molecular_functionprotein binding
V0005576cellular_componentextracellular region
V0005829cellular_componentcytosol
V0005833cellular_componenthemoglobin complex
V0006954biological_processinflammatory response
V0015670biological_processcarbon dioxide transport
V0015671biological_processoxygen transport
V0019825molecular_functionoxygen binding
V0020037molecular_functionheme binding
V0030185biological_processnitric oxide transport
V0030492molecular_functionhemoglobin binding
V0031720molecular_functionhaptoglobin binding
V0031721molecular_functionhemoglobin alpha binding
V0031838cellular_componenthaptoglobin-hemoglobin complex
V0042542biological_processresponse to hydrogen peroxide
V0042744biological_processhydrogen peroxide catabolic process
V0045429biological_processpositive regulation of nitric oxide biosynthetic process
V0048821biological_processerythrocyte development
V0070062cellular_componentextracellular exosome
V0070293biological_processrenal absorption
V0070527biological_processplatelet aggregation
V0071682cellular_componentendocytic vesicle lumen
V0072562cellular_componentblood microparticle
V0098869biological_processcellular oxidant detoxification
V1904724cellular_componenttertiary granule lumen
V1904813cellular_componentficolin-1-rich granule lumen
W0004601molecular_functionperoxidase activity
W0005344molecular_functionoxygen carrier activity
W0005506molecular_functioniron ion binding
W0005515molecular_functionprotein binding
W0005576cellular_componentextracellular region
W0005829cellular_componentcytosol
W0005833cellular_componenthemoglobin complex
W0006954biological_processinflammatory response
W0015670biological_processcarbon dioxide transport
W0015671biological_processoxygen transport
W0016020cellular_componentmembrane
W0019825molecular_functionoxygen binding
W0020037molecular_functionheme binding
W0030185biological_processnitric oxide transport
W0031720molecular_functionhaptoglobin binding
W0031838cellular_componenthaptoglobin-hemoglobin complex
W0042542biological_processresponse to hydrogen peroxide
W0042744biological_processhydrogen peroxide catabolic process
W0048821biological_processerythrocyte development
W0070062cellular_componentextracellular exosome
W0071682cellular_componentendocytic vesicle lumen
W0072562cellular_componentblood microparticle
W0098869biological_processcellular oxidant detoxification
X0004601molecular_functionperoxidase activity
X0005344molecular_functionoxygen carrier activity
X0005515molecular_functionprotein binding
X0005576cellular_componentextracellular region
X0005829cellular_componentcytosol
X0005833cellular_componenthemoglobin complex
X0006954biological_processinflammatory response
X0015670biological_processcarbon dioxide transport
X0015671biological_processoxygen transport
X0019825molecular_functionoxygen binding
X0020037molecular_functionheme binding
X0030185biological_processnitric oxide transport
X0030492molecular_functionhemoglobin binding
X0031720molecular_functionhaptoglobin binding
X0031721molecular_functionhemoglobin alpha binding
X0031838cellular_componenthaptoglobin-hemoglobin complex
X0042542biological_processresponse to hydrogen peroxide
X0042744biological_processhydrogen peroxide catabolic process
X0045429biological_processpositive regulation of nitric oxide biosynthetic process
X0048821biological_processerythrocyte development
X0070062cellular_componentextracellular exosome
X0070293biological_processrenal absorption
X0070527biological_processplatelet aggregation
X0071682cellular_componentendocytic vesicle lumen
X0072562cellular_componentblood microparticle
X0098869biological_processcellular oxidant detoxification
X1904724cellular_componenttertiary granule lumen
X1904813cellular_componentficolin-1-rich granule lumen
Functional Information from PDB Data
site_idAC1
Number of Residues10
DetailsBINDING SITE FOR RESIDUE HEM A 142
ChainResidue
ATYR42
VHIS77
APHE43
AHIS45
AHIS58
ALYS61
AHIS87
APHE98
ALEU101
ALEU136

site_idAC2
Number of Residues11
DetailsBINDING SITE FOR RESIDUE HEM B 147
ChainResidue
BPHE41
BPHE42
BHIS63
BLYS66
BALA70
BHIS92
BLEU96
BVAL98
BASN102
BLEU106
BLEU141

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE HEM C 142
ChainResidue
CTYR42
CPHE43
CHIS45
CHIS58
CLYS61
CHIS87
CPHE98
CLEU101

site_idAC4
Number of Residues8
DetailsBINDING SITE FOR RESIDUE HEM D 147
ChainResidue
DPHE42
DHIS63
DLYS66
DHIS92
DVAL98
DASN102
DLEU106
DLEU141

site_idAC5
Number of Residues7
DetailsBINDING SITE FOR RESIDUE HEM P 142
ChainResidue
PTYR42
PPHE43
PHIS45
PHIS58
PLYS61
PHIS87
PLEU101

site_idAC6
Number of Residues9
DetailsBINDING SITE FOR RESIDUE HEM Q 147
ChainResidue
QPHE41
QPHE42
QHIS63
QLYS66
QHIS92
QVAL98
QASN102
QLEU106
QLEU141

site_idAC7
Number of Residues9
DetailsBINDING SITE FOR RESIDUE HEM R 142
ChainResidue
RTYR42
RPHE43
RHIS45
RHIS58
RLYS61
RHIS87
RPHE98
RLEU101
RLEU136

site_idAC8
Number of Residues10
DetailsBINDING SITE FOR RESIDUE HEM S 147
ChainResidue
SPHE41
SPHE42
SHIS63
SLYS66
SHIS92
SLEU96
SVAL98
SASN102
SLEU106
SLEU141

site_idAC9
Number of Residues8
DetailsBINDING SITE FOR RESIDUE HEM U 142
ChainResidue
UTYR42
UPHE43
UHIS45
UHIS58
ULYS61
UHIS87
UPHE98
ULEU101

site_idBC1
Number of Residues10
DetailsBINDING SITE FOR RESIDUE HEM V 147
ChainResidue
VPHE41
VPHE42
VHIS63
VLYS66
VALA70
VHIS92
VVAL98
VASN102
VLEU106
VLEU141

site_idBC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE HEM W 142
ChainResidue
WTYR42
WPHE43
WHIS45
WHIS58
WLYS61
WHIS87
WLEU101

site_idBC3
Number of Residues11
DetailsBINDING SITE FOR RESIDUE HEM X 147
ChainResidue
XHIS63
XLYS66
XALA70
XHIS92
XLEU96
XVAL98
XASN102
XLEU106
XLEU141
XPHE41
XPHE42

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues48
DetailsPeptide: {"description":"Hemopressin","featureId":"PRO_0000455882","evidences":[{"source":"PubMed","id":"18077343","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1704
DetailsDomain: {"description":"Globin","evidences":[{"source":"PROSITE-ProRule","id":"PRU00238","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues6
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00238","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues6
DetailsBinding site: {"description":"proximal binding residue","evidences":[{"source":"PROSITE-ProRule","id":"PRU00238","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues198
DetailsSite: {"description":"(Microbial infection) Cleavage; by N.americanus apr-2","evidences":[{"source":"PubMed","id":"12552433","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues48
DetailsSite: {"description":"Not glycated","evidences":[{"source":"PubMed","id":"7358733","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues30
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues18
DetailsModified residue: {"description":"N6-succinyllysine; alternate","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues24
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues6
DetailsModified residue: {"description":"N6-succinyllysine","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues6
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues24
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues18
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues24
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine; alternate","evidences":[{"source":"PubMed","id":"7358733","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues30
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine","evidences":[{"source":"PubMed","id":"7358733","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues54
DetailsPeptide: {"description":"LVV-hemorphin-7","featureId":"PRO_0000296641"}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues36
DetailsPeptide: {"description":"Spinorphin","featureId":"PRO_0000424226"}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues24
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI19
Number of Residues6
DetailsBinding site: {"description":"distal binding residue"}
ChainResidueDetails

site_idSWS_FT_FI20
Number of Residues6
DetailsBinding site: {"description":"proximal binding residue"}
ChainResidueDetails

site_idSWS_FT_FI21
Number of Residues6
DetailsModified residue: {"description":"N-pyruvate 2-iminyl-valine; in Hb A1b"}
ChainResidueDetails

site_idSWS_FT_FI22
Number of Residues12
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"4531009","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI23
Number of Residues6
DetailsModified residue: {"description":"S-nitrosocysteine","evidences":[{"source":"PubMed","id":"8637569","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"9843411","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI24
Number of Residues6
DetailsModified residue: {"description":"N6-acetyllysine; alternate","evidences":[{"source":"PubMed","id":"4531009","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI25
Number of Residues6
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) valine; in Hb A1c","evidences":[{"source":"PubMed","id":"635569","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

251422

PDB entries from 2026-04-01

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