6D7H | pdb_00006d7h

CTX-M-14 Apoenzyme

• PDB DOI: https://doi.org/10.2210/pdb6D7H/pdb

• Classification: HYDROLASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2018-04-24 Released: 2019-07-24 
• Deposition Author(s): Kemp, M., Nichols, D., Chen, Y.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 
  0.236 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.188 (Depositor) 

Starting Model: experimental

Literature

The Role of Asp-Asp Short Hydrogen Bond in Maintaining Active Site Integrity of CTX-M Beta-Lactamase

Nichols, D.A., Kemp, M.T., Chen, Y.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 28.25 kDa 
• Atom Count: 2,258 
• Modeled Residue Count: 262 
• Deposited Residue Count: 263 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-lactamase	A	263	Escherichia coli	Mutation(s): 0  Gene Names:  blaCTX-M-14, beta-lactamase CTX-M-14, bla, bla CTX-M-14, bla-CTX-M-14a, blaCTX-M, blaCTX-M-14a, blaCTX-M-14b, blaCTX-M-14c, blaCTX-M-27b, blatoho-3, blaUOE-2, CTX-M-14, AM333_26030, AM340_28340, AM465_01285, AM465_06510, AM465_23360, APT94_14605, BEN53_26220, BJJ90_27545, BK334_27290, BOH76_00730, BON63_16015, BON65_15195, BON66_01305, BON69_22545, BON72_03470, BON75_10525, BON76_14325, BON83_15455, BON86_08515, BON91_02075, BON92_04750, BON94_23850, BON95_01680, BON96_03940, BON98_23175, BXT93_06855, C5N07_28500, CDL37_21060, CR538_26855, DW236_20870, E4K51_21070, EIA08_25160, EIA21_26975, ELT23_05930, ELV24_09995, ELX61_24095, EST51_15935, EST51_18575, EST51_22260, EST51_22365, ETN48_p0088, FNJ69_13810, FTV90_03295, GE096_24920, GE096_25355, GQE36_23945, HGR36_01450, HGR36_27140, HHH24_004455, HHH24_005319, HJI79_003882, HJI79_004995, HK427_004976, HK427_005087, HL152_24835, HL152_25835, HL563_21800, HL563_23665, HLT96_25270, HLT96_28700, HLU13_27785, HLY53_18605, HLY53_26190, HLZ85_26065, HMW26_20895, HMW26_29355, HNC73_28650, HNC75_27190, HNC75_29165, HNC80_26145, HNC80_27675, HNC88_26185, HNC88_27880, HND23_26750, HND23_28285, HNV91_23425, HNV91_24920, HNV94_24095, HNV94_27845, pCT_085, pHK01_011, RCS103_P0010, RCS30_P0082, RCS56_P0085, RCS60_P0031, RCS63_P0006, RCS65_P0008, RCS66_P0053, SAMEA4362930_00013, SAMEA4363083_00099, SAMEA4370290_00046, WP4S18E07_P40650, WP7S17E01_P10270, WP7S18E09_37980 EC: 3.5.2.6
UniProt
Find proteins for H6UQI0 (Escherichia coli) Explore H6UQI0  Go to UniProtKB:  H6UQI0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	B [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
K	C [auth A], D [auth A], E [auth A], F [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free:  0.236 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.183 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.188 (Depositor) 

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.71	α = 90
b = 41.71	β = 90
c = 232.524	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PDB_EXTRACT	data extraction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-07-24 
Deposition Author(s): Kemp, M., Nichols, D., Chen, Y.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI103158

Revision History  

• Version 1.0: 2019-07-24
  Type: Initial release
  
• Version 1.1: 2019-12-18
  Changes: Author supporting evidence
• Version 2.0: 2022-07-06
  Type: Coordinate replacement
  Reason: Model completeness
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Polymer sequence, Refinement description, Source and taxonomy, Structure summary
• Version 2.1: 2023-10-04
  Changes: Data collection, Refinement description