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1RTZ

CRYSTAL STRUCTURE OF E.COLI APO-HPPK(V83G/DEL84-89) AT 1.33 ANGSTROM RESOLUTION

Functional Information from GO Data
ChainGOidnamespacecontents
A0000166molecular_functionnucleotide binding
A0000287molecular_functionmagnesium ion binding
A0003848molecular_function2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase activity
A0005524molecular_functionATP binding
A0009396biological_processfolic acid-containing compound biosynthetic process
A0016301molecular_functionkinase activity
A0016740molecular_functiontransferase activity
A0046654biological_processtetrahydrofolate biosynthetic process
A0046656biological_processfolic acid biosynthetic process
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 161
ChainResidue
AASP95
AASP97
AGOL172
AHOH219
AHOH396
AHOH397

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 162
ChainResidue
AHOH392
AHOH401
AHOH402
AGLU141
AHOH306
AHOH390

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 163
ChainResidue
AGLY26
ASER31
AHOH231
AHOH247
AHOH319
AHOH393

site_idAC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CL A 164
ChainResidue
ALYS119
APRO138
AASP139
AHOH240

site_idAC5
Number of Residues5
DetailsBINDING SITE FOR RESIDUE CL A 165
ChainResidue
APHE39
AGLN79
ALYS157
AHOH217
AHOH228

site_idAC6
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CL A 166
ChainResidue
AALA24
AARG75
AHOH210
AHOH211
AHOH228
AHOH250

site_idAC7
Number of Residues8
DetailsBINDING SITE FOR RESIDUE GOL A 171
ChainResidue
AGLU30
ASER31
AHIS32
AGLU61
ASER63
AGLU134
AHOH269
AHOH310

site_idAC8
Number of Residues9
DetailsBINDING SITE FOR RESIDUE GOL A 172
ChainResidue
AASP95
AMG161
AHOH219
AHOH255
AHOH355
AHOH371
AHOH388
AHOH396
AHOH397

Functional Information from PROSITE/UniProt
site_idPS00794
Number of Residues12
DetailsHPPK 7,8-dihydro-6-hydroxymethylpterin-pyrophosphokinase signature. RgGPRtlDLDIM
ChainResidueDetails
AARG82-MET99

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1hka
ChainResidueDetails
AARG92
AARG82

site_idMCSA1
Number of Residues4
DetailsM-CSA 151
ChainResidueDetails
AARG82electrostatic stabiliser, hydrogen bond donor
AARG92electrostatic stabiliser, hydrogen bond donor
AASP95metal ligand
AASP97metal ligand

246031

PDB entries from 2025-12-10

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