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6XJ3

Crystal structure of Class D beta-lactamase from Klebsiella quasipneumoniae in complex with avibactam

Functional Information from GO Data
ChainGOidnamespacecontents
A0008658molecular_functionpenicillin binding
A0008800molecular_functionbeta-lactamase activity
A0017001biological_processantibiotic catabolic process
B0008658molecular_functionpenicillin binding
B0008800molecular_functionbeta-lactamase activity
B0017001biological_processantibiotic catabolic process
C0008658molecular_functionpenicillin binding
C0008800molecular_functionbeta-lactamase activity
C0017001biological_processantibiotic catabolic process
D0008658molecular_functionpenicillin binding
D0008800molecular_functionbeta-lactamase activity
D0017001biological_processantibiotic catabolic process
Functional Information from PDB Data
site_idAC1
Number of Residues10
Detailsbinding site for residue NXL A 301
ChainResidue
AALA71
BMET243
ASER72
ASER120
AILE160
ALYS210
ATHR211
AGLY212
ATRP213
AARG249

site_idAC2
Number of Residues2
Detailsbinding site for residue EDO A 302
ChainResidue
AASP135
AARG138

site_idAC3
Number of Residues7
Detailsbinding site for residue CA A 303
ChainResidue
AGLU49
AGLN51
AHOH445
AHOH456
AHOH477
BHOH412
BHOH488

site_idAC4
Number of Residues6
Detailsbinding site for residue EDO B 302
ChainResidue
BASP135
BARG139
BHOH437
BHOH465
BHOH501
BHOH520

site_idAC5
Number of Residues6
Detailsbinding site for residue PEG B 303
ChainResidue
BARG63
BLYS66
BTYR68
BASP238
CLYS66
CHOH410

site_idAC6
Number of Residues7
Detailsbinding site for residue PEG B 304
ChainResidue
BGLY215
BARG216
BTHR239
BPRO240
BARG242
BHOH502
CVAL62

site_idAC7
Number of Residues6
Detailsbinding site for residue PEG B 305
ChainResidue
BGLN109
BASP112
BSER115
BHOH458
BHOH481
CPRO227

site_idAC8
Number of Residues6
Detailsbinding site for residue CA B 306
ChainResidue
AHOH442
BGLU49
BGLN51
BASP53
BHOH498
BHOH539

site_idAC9
Number of Residues4
Detailsbinding site for residue TRS C 302
ChainResidue
CGLU49
CARG50
CTHR228
DGLU261

site_idAD1
Number of Residues16
Detailsbinding site for Di-peptide NXL B 301 and SER B 72
ChainResidue
AMET243
BPRO70
BALA71
BTHR73
BPHE74
BLYS75
BSER120
BVAL122
BLYS210
BTHR211
BGLY212
BTRP213
BARG249
BHOH414
BHOH499
BHOH513

site_idAD2
Number of Residues16
Detailsbinding site for Di-peptide NXL C 301 and SER C 72
ChainResidue
CPRO70
CALA71
CTHR73
CPHE74
CLYS75
CSER120
CVAL122
CLYS210
CTHR211
CGLY212
CTRP213
CARG249
CHOH407
CHOH504
DALA105
DMET243

site_idAD3
Number of Residues16
Detailsbinding site for Di-peptide NXL D 301 and SER D 72
ChainResidue
DARG249
DHOH431
DHOH476
CMET243
DPRO70
DALA71
DTHR73
DPHE74
DLYS75
DPHE104
DSER120
DILE160
DLYS210
DTHR211
DGLY212
DTRP213

Functional Information from PROSITE/UniProt
site_idPS00337
Number of Residues11
DetailsBETA_LACTAMASE_D Beta-lactamase class-D active site. PaSTFKIPhTL
ChainResidueDetails
APRO70-LEU80

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PDB entries from 2026-03-11

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