8VI8

Engineered glutamine binding protein and a cobaloxime ligand - no GLN bound

PDB DOI: https://doi.org/10.2210/pdb8VI8/pdb

Classification: METAL BINDING PROTEIN
Organism(s): Escherichia coli
Expression System: Escherichia coli BL21
Mutation(s): Yes

Deposited: 2024-01-03 Released: 2024-09-04
Deposition Author(s): Boggs, D.G., Fatima, S., Olshansky, L., Bridwell-Rabb, J.
Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 3.21 Å
R-Value Free: 0.290
R-Value Work: 0.284
R-Value Observed: 0.284

Starting Model: experimental
View more details

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.0 of the entry. See complete history.

Literature

Conformation-Dependent Hydrogen-Bonding Interactions in a Switchable Artificial Metalloprotein.

Fatima, S., Mehrafrooz, B., Boggs, D.G., Ali, N., Singh, S., Thielges, M.C., Bridwell-Rabb, J., Aksimentiev, A., Olshansky, L.

(2024) Biochemistry 63: 2040-2050

PubMed: 39088332 Search on PubMed
DOI: https://doi.org/10.1021/acs.biochem.4c00209
Primary Citation of Related Structures:
8VI8

PubMed Abstract:
Hydrogen-bonding (H-bonding) interactions in metalloprotein active sites can critically regulate enzyme function. Changes in the protein structure triggered by interplay with substrates, products, and partner proteins are often translated to the metallocofactor by way of specific changes in H-bond networks connected to the active site. However, the complexities of metalloprotein architecture and mechanism often preclude our ability to define the precise molecular interactions giving rise to these intricate regulatory pathways. To address this shortcoming, we have developed conformationally switchable artificial metalloproteins (swArMs) in which allosteric Gln-binding triggers protein conformational changes that impact the microenvironment surrounding an installed metallocofactor. Herein, we report a combined structural, spectroscopic, and computational approach to enhance the conformation-dependent changes in H-bond interactions surrounding the metallocofactor site of a swArM. Structure-informed molecular dynamics simulations were employed to predict point mutations that could enhance active site H-bond interactions preferentially in the Gln-bound holo -conformation of the swArM. Testing our predictions via the unique infrared spectral signals associated with the metallocofactor site, we have identified three key residues capable of imparting conformational control over the metallocofactor microenvironment. The resultant swArMs not only model biologically relevant structural regulation but also provide an enhanced Gln-responsive biological probe to be leveraged in future biosensing applications.

Organizational Affiliation

Department of Chemistry, Center for Biophysics and Quantitative Biology, Materials Research Laboratory, and the Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 600 S. Mathews Ave., Urbana, Illinois 61801, United States.

Macromolecule Content

Total Structure Weight: 155.56 kDa
Atom Count: 10,889
Modelled Residue Count: 1,362
Deposited Residue Count: 1,374
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Amino acid ABC transporter substrate-binding protein	A, B, C, D, E A, B, C, D, E, F	229	Escherichia coli	Mutation(s): 2 Gene Names: glnH, A5U30_004091, A6592_04880, A8499_000176, A9X72_16950, AAG43_003583, ACN68_16860, ACN81_02400, ACU57_05845, AF998_000125... glnH, A5U30_004091, A6592_04880, A8499_000176, A9X72_16950, AAG43_003583, ACN68_16860, ACN81_02400, ACU57_05845, AF998_000125, AM464_21485, APX88_17575, AT335_000554, AT845_002764, AW118_24500, AW119_03915, AWP47_29145, B6R12_003536, B6R15_002883, B6R31_003222, B6R48_003973, B6R87_003886, BANRA_01322, BANRA_01764, BEA19_14205, BER14_07540, BF481_003043, BG944_004267, BGM66_000966, BHS81_04935, BJI68_11495, BJJ90_17825, BK292_21345, BK383_19105, BLM69_000575, BMC79_000611, BMT49_05685, BMT50_00560, BMT91_20520, BN17_06101, BO068_000746, BOH76_16995, BON63_24725, BON64_24190, BON65_04740, BON66_07455, BON67_25290, BON68_02720, BON69_08400, BON70_24775, BON71_14305, BON72_22420, BON73_01195, BON74_14830, BON75_15470, BON76_25420, BON77_09375, BON78_20655, BON79_20060, BON80_12630, BON81_19085, BON82_15305, BON83_05500, BON84_13940, BON86_21740, BON87_16800, BON88_07465, BON89_22820, BON90_14295, BON91_21900, BON92_22285, BON93_04225, BON94_25770, BON95_05775, BON96_27115, BON97_10525, BON98_19710, BR158_002878, BRV02_000648, BSR05_11095, BTB68_001717, BTQ06_26205, BUO55_004168, BvCmsF30A_02312, BvCmsHHP019_04964, BvCmsKKP061_03133, BvCmsKSNP073_02686, BVL39_24445, BXT93_09325, BZL69_00955, C0P57_004641, C1Q91_004053, C2121_002453, C2M16_01565, C2R31_002978, C2U48_05980, C3F40_08525, C5N07_02720, C5Y87_11455, C9114_21285, C9160_24490, C9E67_21255, C9Z68_13890, CA593_25060, CCS08_19690, CCV12_002704, CDC27_03365, CDL36_05995, CDL37_06170, CF22_003152, CG831_000699, CHM61_001352, CIG67_24135, CO706_26845, CQ986_002219, CR538_17365, CR539_08495, CR628_003110, CTR35_001347, CV83915_00768, CWS33_06680, CX938_000617, CXJ73_000498, CY655_04230, D0X26_05085, D1912_20655, D1H34_001169, D3822_09995, D3C88_05045, D3G36_03255, D3Y67_17015, D4N09_12520, D4U49_00030, D9D43_04855, D9D77_09815, D9E34_09280, D9E49_16110, D9H94_11690, D9J03_11000, D9J61_05355, DAH17_03825, DAH18_19240, DAH19_07490, DAH20_21020, DAH21_16625, DAH22_20195, DAH23_12545, DAH24_12625, DAH25_13880, DAH26_12570, DAH27_27195, DAH28_26570, DAH29_21215, DAH30_24830, DAH31_23660, DAH32_25755, DAH33_16740, DAH34_00565, DAH35_19590, DAH36_01785, DAH37_00035, DAH38_23920, DAH40_16855, DAH41_26115, DAH42_14420, DAH43_13740, DAH45_14115, DAH46_16030, DAH47_10645, DAH48_08930, DAH49_15255, DAH50_02775, DD762_19985, DEN86_16580, DEN87_25365, DEN88_18460, DEN89_18240, DEN90_15895, DEN91_18520, DEN92_25370, DEN93_25685, DEN94_25170, DEN95_25645, DEN96_14460, DEN97_05945, DEN98_14610, DEN99_03305, DEO00_15605, DEO01_16930, DEO02_15845, DEO03_02745, DEO04_17445, DEO05_17315, DEO06_16065, DEO07_16850, DEO08_10875, DEO09_17170, DEO10_17430, DEO11_17320, DEO12_17235, DEO13_25310, DEO14_25015, DEO15_18570, DEO17_18420, DEO18_14095, DEO19_25855, DEO20_09480, DIV22_24420, DKP82_24310, DM870_16080, DN627_03140, DNX30_21735, DRW19_18320, DS732_09030, DTL43_10730, DTL90_03445, DTM45_05760, DU321_00670, DXT69_17235, DXT70_03865, DXT71_08710, DXT73_10050, E0I42_20880, E2112_02675, E2113_01945, E2114_18730, E2115_17055, E2116_04330, E2117_24095, E2118_16300, E2119_12420, E2120_04215, E2121_18185, E2122_15175, E2123_15570, E2124_10840, E2125_18565, E2127_00470, E2128_04955, E2129_10405, E2130_05520, E2131_16230, E2132_01450, E2133_04840, E2134_04965, E2135_16085, E2136_14980, E2646_20010, E3O05_01530, E4K51_02810, E4T14_00550, E4T84_17465, E5H86_25390, E5M02_22525, E5P22_03440, E5P23_09650, E5P24_07820, E5P25_14380, E5P26_02375, E5P27_03730, E5P28_05135, E5P29_02255, E5P30_11875, E5P31_05030, E5P32_00405, E5P33_13470, E5P34_03095, E5P35_02485, E5P36_15665, E5P37_20315, E5P39_19970, E5P40_02695, E5P41_16665, E5P42_12050, E5P43_17005, E5P44_18530, E5P45_22380, E5P46_16045, E5P47_19935, E5P48_15405, E5P49_19430, E5P50_22740, E5P51_16920, E5S34_18760, E5S35_18835, E5S36_04930, E5S37_23235, E5S38_16415, E5S39_18510, E5S43_19010, E5S44_19440, E5S45_23380, E5S46_22040, E5S47_18610, E5S48_18775, E5S51_14615, E5S52_10650, E5S53_16880, E5S54_25355, E5S55_16870, E5S56_20090, E5S57_09335, E5S58_12745, E5S61_14780, E5S62_04320, E6C80_01100, E6D34_16620, EA239_02055, EA435_03075, EAI46_17535, EAN77_08520, EAX79_16230, EC1094V2_3069, EC95NR1_05084, ECs0889, ED648_06680, EHD79_17160, EI021_00555, EIA08_01310, EIZ93_04910, EKI52_06410, EL79_3071, EL80_3032, ELT16_02415, ELT17_17330, ELT20_02820, ELT21_01480, ELT22_07560, ELT23_02015, ELT24_02785, ELT25_04925, ELT26_09185, ELT27_07495, ELT28_15430, ELT29_09190, ELT30_04155, ELT31_02235, ELT32_01320, ELT33_01125, ELT34_02155, ELT35_01150, ELT36_07860, ELT38_02015, ELT39_12720, ELT40_06625, ELT41_10995, ELT44_00485, ELT45_07655, ELT46_05645, ELT48_02765, ELT49_11575, ELT50_00370, ELT51_04720, ELT52_01735, ELT54_03790, ELT55_02630, ELT56_04370, ELT58_13405, ELT59_01975, ELT60_02685, ELT61_00525, ELT63_00400, ELT72_09395, ELU07_01290, ELU82_01275, ELU83_00030, ELU85_01090, ELU88_02755, ELU89_06090, ELU90_16660, ELU91_09660, ELU94_20245, ELU95_04135, ELU96_01710, ELU97_02075, ELU98_07325, ELU99_17975, ELV00_00990, ELV01_02685, ELV02_04500, ELV03_02685, ELV04_09130, ELV05_01070, ELV07_02685, ELV08_05490, ELV09_09705, ELV10_03635, ELV11_00495, ELV12_17700, ELV13_05135, ELV15_08005, ELV16_06920, ELV20_01690, ELV21_07280, ELV22_03390, ELV23_04940, ELV26_19830, ELV28_13395, ELV29_14030, ELV40_13070, ELX48_20960, ELX61_08885, ELX66_13645, ELX68_03535, ELX69_04805, ELX76_06605, ELX79_08650, ELX85_04825, ELX96_24945, ELY02_21695, ELY32_15660, ELY36_07870, ELY39_10000, ELY41_22740, ELY48_10875, EN85_004581, ERS085406_04011, ERS139208_02685, EWK56_11475, ExPECSC038_02876, EXX13_17615, EYV17_11920, EYV18_03835, F0L67_04275, F2N20_02135, F2N31_03410, F3N40_12265, F7F11_11485, F7N46_08470, F9413_07780, F9461_01305, F9B07_02710, F9S83_08475, F9V24_04485, F9X20_12650, FDM60_08540, FE584_14605, FE587_14715, FEJ01_13600, FFF58_04660, FGG80_18845, FHO90_02740, FHQ91_05095, FIJ20_11900, FJQ40_17745, FJQ51_03360, FJQ53_08590, FKO60_07285, FOI11_009340, FOI11_10705, FPI65_04950, FPJ29_13820, FPS11_01585, FQF29_02765, FV293_02200, FVB16_07150, FWK02_14955, FY127_05225, FZC17_24290, FZN31_16475, FZU14_07000, G3813_001838, G3V95_03410, G3W53_12740, G4A38_09725, G4A47_02555, G5603_02180, G7630_000206, G9448_06715, GAI66_11760, GAI89_13630, GAJ12_17235, GAJ26_02185, GF147_05165, GF699_09700, GFY34_01840, GIB53_03185, GJ11_04510, GJO56_05855, GKF66_09425, GKF89_13835, GNW61_02415, GNZ05_09120, GOP25_10140, GP711_00870, GP944_02795, GP965_17210, GP979_15650, GQM04_08380, GQM13_17840, GQM21_08920, GQN34_06325, GQW07_06480, GQW68_09320, GQW80_16390, GRC73_03245, GRO95_00200, GRW05_01550, GRW24_15895, GRW56_11730, GRW57_13110, GSM54_17415, GSY44_21500, GTP88_11170, GUC01_03260, GUI33_12255, H0O37_11575, H0O39_10830, H0O72_02630, HEP30_007075, HEP34_000682, HHH44_004674, HI055_001651, HIE29_000308, HIN64_003897, HJQ60_003183, HJU54_001291, HKA49_004171, HL563_07185, HL601_10425, HLV18_05320, HLX92_21635, HLZ50_00225, HmCms169_02183, HMJ82_04430, HMV95_02550, HMW38_01730, HNC36_00575, HNC59_02155, HNC66_13445, HNC99_06490, HND12_01310, HV109_16015, HV209_04855, HVV39_21020, HVW04_06960, HVW19_18030, HVW43_08305, HVY77_17775, HVZ71_16640, HX136_17495, I6H00_09980, I6H01_21610, I6H02_22350, IA00_002027, IFB95_003951, IH768_00950, IH772_11995, IT029_003785, J0541_000988, J4S20_005071, J5U05_002124, JE86ST02C_09210, JE86ST05C_09750, JFD_02409, JNP96_08670, NCTC10082_05067, NCTC10089_03418, NCTC10090_00382, NCTC10418_05048, NCTC10429_05756, NCTC10865_04252, NCTC11181_00607, NCTC12950_03687, NCTC13127_04610, NCTC13216_03355, NCTC4450_03842, NCTC7922_06781, NCTC7927_03810, NCTC7928_05513, NCTC8008_02951, NCTC8009_06196, NCTC8179_02263, NCTC8333_03962, NCTC8450_01827, NCTC8500_03700, NCTC8621_03555, NCTC8959_00379, NCTC8960_00488, NCTC9001_01370, NCTC9036_03440, NCTC9037_03540, NCTC9075_04560, NCTC9111_03455, NCTC9702_03882, NCTC9706_00702, NCTC9775_01675, NCTC9777_03409, NCTC9962_02368, ND22_002874, RG28_00455, SAMEA3472044_00248, SAMEA3472056_00231, SAMEA3472147_02754, SAMEA3751407_00314, SAMEA3752557_02233, SAMEA3753106_00906, TUM18780_29030, WP4S18E07_30170, WR15_25350, XU56_002013
UniProt
Find proteins for C3THM2 (Escherichia coli) Explore C3THM2 Go to UniProtKB: C3THM2
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	C3THM2
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
X5Z (Subject of Investigation/LOI) Query on X5Z Download Ideal Coordinates CCD File SDF format, chain AA [auth E] SDF format, chain FA [auth F] SDF format, chain G [auth A] SDF format, chain K [auth B] SDF format, chain P [auth C] SDF format, chain W [auth D] MOL2 format, chain AA [auth E] MOL2 format, chain FA [auth F] MOL2 format, chain G [auth A] MOL2 format, chain K [auth B] MOL2 format, chain P [auth C] MOL2 format, chain W [auth D]	AA [auth E] FA [auth F] G [auth A] K [auth B] P [auth C] AA [auth E], FA [auth F], G [auth A], K [auth B], P [auth C], W [auth D]	AZIDOBIS (DIMETHYLGLYOXIMATO) PYRIDINECOBALT C₁₅ H₂₃ Co N₈ O₄ KKXSWROVWVQWSY-GLPMUSQESA-N		Interactions Focus chain AA [auth E] Focus chain FA [auth F] Focus chain G [auth A] Focus chain K [auth B] Focus chain P [auth C] Focus chain W [auth D]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain BA [auth E] SDF format, chain GA [auth F] SDF format, chain H [auth A] SDF format, chain HA [auth F] SDF format, chain I [auth A] SDF format, chain L [auth B] SDF format, chain M [auth B] SDF format, chain Q [auth C] SDF format, chain R [auth C] SDF format, chain S [auth C] SDF format, chain X [auth D] SDF format, chain Y [auth D] MOL2 format, chain BA [auth E] MOL2 format, chain GA [auth F] MOL2 format, chain H [auth A] MOL2 format, chain HA [auth F] MOL2 format, chain I [auth A] MOL2 format, chain L [auth B] MOL2 format, chain M [auth B] MOL2 format, chain Q [auth C] MOL2 format, chain R [auth C] MOL2 format, chain S [auth C] MOL2 format, chain X [auth D] MOL2 format, chain Y [auth D]	BA [auth E] GA [auth F] H [auth A] HA [auth F] I [auth A] BA [auth E], GA [auth F], H [auth A], HA [auth F], I [auth A], L [auth B], M [auth B], Q [auth C], R [auth C], S [auth C], X [auth D], Y [auth D]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain BA [auth E] Focus chain GA [auth F] Focus chain H [auth A] Focus chain HA [auth F] Focus chain I [auth A] Focus chain L [auth B] Focus chain M [auth B] Focus chain Q [auth C] Focus chain R [auth C] Focus chain S [auth C] Focus chain X [auth D] Focus chain Y [auth D]
NA Query on NA Download Ideal Coordinates CCD File SDF format, chain CA [auth E] SDF format, chain DA [auth E] SDF format, chain EA [auth E] SDF format, chain IA [auth F] SDF format, chain J [auth A] SDF format, chain N [auth B] SDF format, chain O [auth B] SDF format, chain T [auth C] SDF format, chain U [auth C] SDF format, chain V [auth C] SDF format, chain Z [auth D] MOL2 format, chain CA [auth E] MOL2 format, chain DA [auth E] MOL2 format, chain EA [auth E] MOL2 format, chain IA [auth F] MOL2 format, chain J [auth A] MOL2 format, chain N [auth B] MOL2 format, chain O [auth B] MOL2 format, chain T [auth C] MOL2 format, chain U [auth C] MOL2 format, chain V [auth C] MOL2 format, chain Z [auth D]	CA [auth E] DA [auth E] EA [auth E] IA [auth F] J [auth A] CA [auth E], DA [auth E], EA [auth E], IA [auth F], J [auth A], N [auth B], O [auth B], T [auth C], U [auth C], V [auth C], Z [auth D]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N		Interactions Focus chain CA [auth E] Focus chain DA [auth E] Focus chain EA [auth E] Focus chain IA [auth F] Focus chain J [auth A] Focus chain N [auth B] Focus chain O [auth B] Focus chain T [auth C] Focus chain U [auth C] Focus chain V [auth C] Focus chain Z [auth D]