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1AEF

SPECIFICITY OF LIGAND BINDING TO A BURIED POLAR CAVITY AT THE ACTIVE SITE OF CYTOCHROME C PEROXIDASE (3-AMINOPYRIDINE)

Functional Information from GO Data
ChainGOidnamespacecontents
A0004601molecular_functionperoxidase activity
A0006979biological_processresponse to oxidative stress
A0020037molecular_functionheme binding
A0034599biological_processcellular response to oxidative stress
Functional Information from PDB Data
site_idAC1
Number of Residues20
DetailsBINDING SITE FOR RESIDUE HEM A 295
ChainResidue
AMET172
AALA174
AHIS175
ALEU177
AGLY178
ALYS179
ATHR180
AHIS181
AASN184
ASER185
AHOH302
AHOH311
AHOH313
AHOH314
APRO44
AVAL47
AARG48
ATRP51
APRO145
AASP146

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE 3AP A 296
ChainResidue
AHIS175
ALEU177
AGLY178
ALYS179
ATHR180
ALEU232
AASP235
AHOH452

site_idAVE
Number of Residues3
DetailsREMOVAL OF TRP 191 FORMS AN INTERNAL CAVITY BELOW THE HEME RELATIVE TO THE ACTIVE SITE.
ChainResidue
AARG48
ATRP51
AHIS52

Functional Information from PROSITE/UniProt
site_idPS00435
Number of Residues11
DetailsPEROXIDASE_1 Peroxidases proximal heme-ligand signature. EVVALMGAHAL
ChainResidueDetails
AGLU167-LEU177

site_idPS00436
Number of Residues12
DetailsPEROXIDASE_2 Peroxidases active site signature. GPvlVRLaWHIS
ChainResidueDetails
AGLY43-SER54

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsACT_SITE: Proton acceptor
ChainResidueDetails
AHIS52

site_idSWS_FT_FI2
Number of Residues1
DetailsACT_SITE: Tryptophan radical intermediate => ECO:0000269|PubMed:2851317
ChainResidueDetails
AGLY191

site_idSWS_FT_FI3
Number of Residues1
DetailsBINDING: axial binding residue => ECO:0000269|PubMed:10722697, ECO:0000269|PubMed:11170452, ECO:0000269|PubMed:2169873, ECO:0000269|PubMed:6092361, ECO:0000269|PubMed:8384877, ECO:0000269|PubMed:8673607
ChainResidueDetails
AHIS175

site_idSWS_FT_FI4
Number of Residues1
DetailsSITE: Transition state stabilizer
ChainResidueDetails
AARG48

site_idSWS_FT_FI5
Number of Residues1
DetailsMOD_RES: Phosphotyrosine => ECO:0007744|PubMed:18407956
ChainResidueDetails
ATYR153

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1apx
ChainResidueDetails
AARG48
AHIS52
AASN82

site_idMCSA1
Number of Residues3
DetailsM-CSA 709
ChainResidueDetails
AARG48electrostatic stabiliser
AHIS52electrostatic stabiliser, proton acceptor, proton donor
AGLY191single electron acceptor, single electron donor

229183

PDB entries from 2024-12-18

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