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2MHB

THE STRUCTURE OF HORSE METHAEMOGLOBIN AT 2.0 ANGSTROMS RESOLUTION

Replaces:  1MHB
Functional Information from GO Data
ChainGOidnamespacecontents
A0005344molecular_functionoxygen carrier activity
A0005506molecular_functioniron ion binding
A0005833cellular_componenthemoglobin complex
A0015671biological_processoxygen transport
A0019825molecular_functionoxygen binding
A0020037molecular_functionheme binding
A0031838cellular_componenthaptoglobin-hemoglobin complex
A0046872molecular_functionmetal ion binding
A0048821biological_processerythrocyte development
B0005344molecular_functionoxygen carrier activity
B0005833cellular_componenthemoglobin complex
B0015671biological_processoxygen transport
B0019825molecular_functionoxygen binding
B0020037molecular_functionheme binding
B0031721molecular_functionhemoglobin alpha binding
B0031838cellular_componenthaptoglobin-hemoglobin complex
B0046872molecular_functionmetal ion binding
B0048821biological_processerythrocyte development
Functional Information from PDB Data
site_idAC1
Number of Residues14
DetailsBINDING SITE FOR RESIDUE HEM A 142
ChainResidue
ATYR42
APHE43
AHIS45
AHIS58
ALYS61
ALEU83
AHIS87
ALEU91
AVAL93
AASN97
APHE98
ALEU101
ALEU136
AHOH143

site_idAC2
Number of Residues13
DetailsBINDING SITE FOR RESIDUE HEM B 147
ChainResidue
BPHE41
BPHE42
BHIS63
BSER70
BPHE71
BLEU88
BHIS92
BLEU96
BVAL98
BASN102
BLEU106
BLEU141
BHOH148

site_idAHM
Number of Residues17
DetailsRESIDUES FORMING THE HEME POCKET OF THE A CHAIN
ChainResidue
ATYR42
ALEU86
AHIS87
ALYS90
AVAL93
AASN97
APHE98
ALEU101
ALEU136
APHE43
AHIS45
APHE46
AHIS58
ALYS61
AVAL62
AALA65
ALEU83

site_idBHM
Number of Residues17
DetailsRESIDUES FORMING THE HEME POCKET OF THE B CHAIN
ChainResidue
BPHE41
BPHE42
BPHE45
BHIS63
BLYS66
BVAL67
BSER70
BPHE71
BLEU88
BLEU91
BHIS92
BLEU96
BVAL98
BASN102
BPHE103
BLEU106
BLEU141

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues8
DetailsPeptide: {"description":"Hemopressin","featureId":"PRO_0000455881","evidences":[{"source":"UniProtKB","id":"P01946","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues284
DetailsDomain: {"description":"Globin","evidences":[{"source":"PROSITE-ProRule","id":"PRU00238","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00238","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsBinding site: {"description":"proximal binding residue","evidences":[{"source":"PROSITE-ProRule","id":"PRU00238","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P69905","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues3
DetailsModified residue: {"description":"N6-succinyllysine","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"UniProtKB","id":"P69905","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues1
DetailsModified residue: {"description":"N6-succinyllysine; alternate","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"UniProtKB","id":"P69905","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues4
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues3
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"UniProtKB","id":"P01942","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues1
DetailsBinding site: {"description":"distal binding residue","evidences":[{"source":"UniProtKB","id":"P80044","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues1
DetailsBinding site: {"description":"proximal binding residue","evidences":[{"source":"PubMed","id":"561852","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1G0B","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1IBE","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1IWH","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1NS6","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1NS9","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y8H","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y8I","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1Y8K","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2D5X","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2DHB","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2MHB","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2ZLT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2ZLU","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2ZLV","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2ZLW","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2ZLX","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues1
DetailsModified residue: {"description":"N-acetylvaline","evidences":[{"source":"UniProtKB","id":"P02086","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P68871","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues3
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"UniProtKB","id":"P68871","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues1
DetailsModified residue: {"description":"S-nitrosocysteine","evidences":[{"source":"UniProtKB","id":"P68871","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

244349

PDB entries from 2025-11-05

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