PDB-10bm: Crystal structure of Phosphoribosylaminoimidazole carboxylase fro...

ID or keywords:

Entry

Database: PDB / ID: 10bm

Title

Crystal structure of Phosphoribosylaminoimidazole carboxylase from Burkholderia xenovorans (AMP, ADP and sulfate complex)

Components

N5-carboxyaminoimidazole ribonucleotide synthase

Keywords

LYASE / SSGCID / STRUCTURAL GENOMICS / SEATTLE STRUCTURAL GENOMICS CENTER FOR INFECTIOUS DISEASE / TRANSFERASE / Phosphoribosylaminoimidazole carboxylase

Function / homology

Function and homology information

5-(carboxyamino)imidazole ribonucleotide synthase / 5-(carboxyamino)imidazole ribonucleotide synthase activity / phosphoribosylaminoimidazole carboxylase activity / 'de novo' IMP biosynthetic process / ATP binding / metal ion binding / cytosol
Similarity search - Function

Biological species

Paraburkholderia xenovorans LB400 (bacteria)

Method

X-RAY DIFFRACTION /

SYNCHROTRON /

MOLECULAR REPLACEMENT / Resolution: 2.49 Å

Authors

Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Funding support

United States, 2items

Organization	Grant number	Country
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	75N93022C00036	United States
National Institutes of Health/Office of the Director	S10OD030394	United States

Citation

Journal: To be published
Title: Crystal structure of Phosphoribosylaminoimidazole carboxylase from Burkholderia xenovorans (AMP, ADP and sulfate complex)
Authors: Liu, L. / Lovell, S. / Battaile, K.P.

History

Deposition	Jan 9, 2026	Deposition site: RCSB / Processing site: RCSB
Revision 1.0	Jan 21, 2026	Provider: repository / Type: Initial release

Structure viewer	Molecule: MolmilJmol/JSmol

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Download

PDBx/mmCIF format	10bm.cif.gz	586 KB	Display	PDBx/mmCIF format
PDB format	pdb10bm.ent.gz	483.3 KB	Display	PDB format
PDBx/mmJSON format	10bm.json.gz		Tree view	PDBx/mmJSON format
Others	Other downloads

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Validation report

Arichive directory	https://data.pdbj.org/pub/pdb/validation_reports/0b/10bm ftp://data.pdbj.org/pub/pdb/validation_reports/0b/10bm	HTTPS FTP

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Related structure data

Similar structure data	Similarity search - Function & homologyF&H Search Similarity search - FunctionF&H Search Similarity search - HomologyF&H Search

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Links

PDB pages	PDBj / wwPDB / NCBI
Related items in Molecule of the Month	#215 - Nov 2017 Aspartate Transcarbamoylase similarity (4) #192 - Dec 2015 Vancomycin similarity (4) #154 - Oct 2012 Citric Acid Cycle similarity (4) #187 - Jul 2015 New Delhi Metallo-β-Lactamase similarity (4) #137 - May 2011 Cytochrome bc1 similarity (1) #129 - Sep 2010 Isocitrate Dehydrogenase similarity (1) #24 - Dec 2001 Glycogen Phosphorylase similarity (1) #55 - Jul 2004 DNA Ligase similarity (1) #16 - Apr 2001 Aminoacyl-tRNA Synthetases similarity (1)

PDB pages

PDBj /

wwPDB /

NCBI

Related items in Molecule of the Month

#215 - Nov 2017
Aspartate Transcarbamoylase
similarity (4)
#192 - Dec 2015
Vancomycin
similarity (4)
#154 - Oct 2012
Citric Acid Cycle
similarity (4)
#187 - Jul 2015
New Delhi Metallo-β-Lactamase
similarity (4)
#137 - May 2011
Cytochrome bc1
similarity (1)
#129 - Sep 2010
Isocitrate Dehydrogenase
similarity (1)
#24 - Dec 2001
Glycogen Phosphorylase
similarity (1)
#55 - Jul 2004
DNA Ligase
similarity (1)
#16 - Apr 2001
Aminoacyl-tRNA Synthetases
similarity (1)

Deposited unit

A: N5-carboxyaminoimidazole ribonucleotide synthase

B: N5-carboxyaminoimidazole ribonucleotide synthase

C: N5-carboxyaminoimidazole ribonucleotide synthase

D: N5-carboxyaminoimidazole ribonucleotide synthase

hetero molecules

174 kDa, 4 polymers
Search similar-shape structures of this assembly by Omokage search (details)

1

A: N5-carboxyaminoimidazole ribonucleotide synthase

hetero molecules

defined by author
Evidence: gel filtration
43.6 kDa, 1 polymers
Search similar-shape structures of this assembly by Omokage search (details)

2

B: N5-carboxyaminoimidazole ribonucleotide synthase

hetero molecules

defined by author
43.7 kDa, 1 polymers
Search similar-shape structures of this assembly by Omokage search (details)

3

C: N5-carboxyaminoimidazole ribonucleotide synthase

hetero molecules

defined by author
43.6 kDa, 1 polymers
Search similar-shape structures of this assembly by Omokage search (details)

4

D: N5-carboxyaminoimidazole ribonucleotide synthase

hetero molecules

defined by author
43.3 kDa, 1 polymers
Search similar-shape structures of this assembly by Omokage search (details)

Unit cell

Length a, b, c (Å)	66.424, 169.400, 170.618
Angle α, β, γ (deg.)	90.00, 90.00, 90.00
Int Tables number	19
Space group name H-M	P2₁2₁2₁

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Protein , 1 types, 4 molecules ABCD

#1: Protein	N5-carboxyaminoimidazole ribonucleotide synthase / N5-CAIR synthase / 5-(carboxyamino)imidazole ribonucleotide synthetase Mass: 42509.523 Da / Num. of mol.: 4 / Fragment: residues 9-397 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Paraburkholderia xenovorans LB400 (bacteria) Gene: purK, Bxe_A0694 / Plasmid: BuxeA.00036.a.B2 / Production host: Escherichia coli BL21(DE3) (bacteria) References: UniProt: Q13UJ9, 5-(carboxyamino)imidazole ribonucleotide synthase

#1: Protein

N5-carboxyaminoimidazole ribonucleotide synthase / N5-CAIR synthase / 5-(carboxyamino)imidazole ribonucleotide synthetase

Mass: 42509.523 Da / Num. of mol.: 4 / Fragment: residues 9-397
Source method: isolated from a genetically manipulated source
Source: (gene. exp.)

Paraburkholderia xenovorans LB400 (bacteria)
Gene: purK, Bxe_A0694 / Plasmid: BuxeA.00036.a.B2 / Production host:

Escherichia coli BL21(DE3) (bacteria)
References: UniProt: Q13UJ9, 5-(carboxyamino)imidazole ribonucleotide synthase

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Non-polymers , 7 types, 100 molecules

#2: Chemical	ChemComp-AMP / ADENOSINE MONOPHOSPHATE Mass: 347.221 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C₁₀H₁₄N₅O₇P / Feature type: SUBJECT OF INVESTIGATION / Comment: AMP*YM
#3: Chemical	ChemComp-PEG / DI(HYDROXYETHYL)ETHER Mass: 106.120 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C₄H₁₀O₃
#4: Chemical	ChemComp-MG / MAGNESIUM ION Mass: 24.305 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical	... ChemComp-SO4 / SULFATE ION Mass: 96.063 Da / Num. of mol.: 22 / Source method: obtained synthetically / Formula: SO₄
#6: Chemical	ChemComp-PG4 / TETRAETHYLENE GLYCOL Mass: 194.226 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C₈H₁₈O₅ / Comment: precipitant*YM
#7: Chemical	ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE Mass: 427.201 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C₁₀H₁₅N₅O₁₀P₂ / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM
#8: Water	ChemComp-HOH / water Mass: 18.015 Da / Num. of mol.: 68 / Source method: isolated from a natural source / Formula: H₂O

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Details

Has ligand of interest	Y
Has protein modification	N

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Experiment

Experiment	Method: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

Crystal	Density Matthews: 2.82 Å³/Da / Density % sol: 56.42 %
Crystal grow	Temperature: 291 K / Method: vapor diffusion, sitting drop / pH: 7 Details: Berkeley H5: 100 mM MgCl2, 100 mM Li2SO4, 25% PEG 400. BuxeA.00036.a.B2.PW39468 at 23.8 mg/mL. Cocrystallization with 3mM ATP but hydrolyzed AMP and ADP were observed. plate 20560 A12 drop ...Details: Berkeley H5: 100 mM MgCl2, 100 mM Li2SO4, 25% PEG 400. BuxeA.00036.a.B2.PW39468 at 23.8 mg/mL. Cocrystallization with 3mM ATP but hydrolyzed AMP and ADP were observed. plate 20560 A12 drop 1, Puck: PSL-1103, Cryo: 20% PEG 200 + 80% crystallant

Crystal

Density Matthews: 2.82 Å³/Da / Density % sol: 56.42 %

Crystal grow

Temperature: 291 K / Method: vapor diffusion, sitting drop / pH: 7
Details: Berkeley H5: 100 mM MgCl2, 100 mM Li2SO4, 25% PEG 400. BuxeA.00036.a.B2.PW39468 at 23.8 mg/mL. Cocrystallization with 3mM ATP but hydrolyzed AMP and ADP were observed. plate 20560 A12 drop ...

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Data collection

Diffraction	Mean temperature: 100 K / Serial crystal experiment: N
Diffraction source	Source: SYNCHROTRON / Site: NSLS-II / Beamline: 19-ID / Wavelength: 0.9786 Å
Detector	Type: DECTRIS EIGER2 XE 9M / Detector: PIXEL / Date: Dec 13, 2025
Radiation	Monochromator: Double Crystal Si 111 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength	Wavelength: 0.9786 Å / Relative weight: 1
Reflection	Resolution: 2.49→50.07 Å / Num. obs: 68380 / % possible obs: 100 % / Redundancy: 13.3 % / CC_1/2: 0.998 / R_merge(I) obs: 0.162 / R_pim(I) all: 0.046 / R_rim(I) all: 0.169 / Χ²: 1.32 / Net I/σ(I): 13.9 / Num. measured all: 912499
Reflection shell	Resolution: 2.49→2.55 Å / % possible obs: 100 % / Redundancy: 13.5 % / R_merge(I) obs: 1.855 / Num. measured all: 67436 / Num. unique obs: 4993 / CC_1/2: 0.724 / R_pim(I) all: 0.521 / R_rim(I) all: 1.928 / Χ²: 0.99 / Net I/σ(I) obs: 1.7

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Processing

Software

Name	Version	Classification
PHENIX	(2.0_5765: ???)	refinement
Aimless		data scaling
XDS		data reduction
PHASER		phasing
PDB_EXTRACT		data extraction

Refinement

Method to determine structure:

MOLECULAR REPLACEMENT / Resolution: 2.49→50.07 Å / SU ML: 0.36 / Cross valid method: FREE R-VALUE / σ(F): 1.33 / Phase error: 29.86 / Stereochemistry target values: ML

	R_factor	Num. reflection	% reflection
R_free	0.2495	3298	4.83 %
R_work	0.1963	-	-
obs	0.199	68291	99.96 %

Solvent computation

Shrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL

Refinement step

Cycle: LAST / Resolution: 2.49→50.07 Å

	Protein	Nucleic acid	Ligand	Solvent	Total
Num. atoms	11387	0	242	68	11697

Refine LS restraints

Refine-ID	Type	Dev ideal	Number
X-RAY DIFFRACTION	f_bond_d	0.006	11893
X-RAY DIFFRACTION	f_angle_d	0.808	16236
X-RAY DIFFRACTION	f_dihedral_angle_d	11.688	4246
X-RAY DIFFRACTION	f_chiral_restr	0.049	1857
X-RAY DIFFRACTION	f_plane_restr	0.008	2120

LS refinement shell

Resolution (Å)	R_factor R_free	Num. reflection R_free	R_factor R_work	Num. reflection R_work	Refine-ID	% reflection obs (%)
2.49-2.53	0.4016	152	0.3301	2647	X-RAY DIFFRACTION	100
2.53-2.56	0.4004	149	0.3124	2682	X-RAY DIFFRACTION	100
2.56-2.6	0.3583	163	0.2943	2601	X-RAY DIFFRACTION	100
2.6-2.65	0.3489	122	0.2917	2717	X-RAY DIFFRACTION	100
2.65-2.69	0.3701	123	0.294	2675	X-RAY DIFFRACTION	100
2.69-2.74	0.338	95	0.2883	2714	X-RAY DIFFRACTION	100
2.74-2.79	0.3214	127	0.2559	2675	X-RAY DIFFRACTION	100
2.79-2.85	0.2933	135	0.2267	2674	X-RAY DIFFRACTION	100
2.85-2.91	0.2876	115	0.2217	2704	X-RAY DIFFRACTION	100
2.91-2.98	0.2684	138	0.231	2679	X-RAY DIFFRACTION	100
2.98-3.05	0.336	105	0.238	2725	X-RAY DIFFRACTION	100
3.05-3.14	0.3199	122	0.2512	2707	X-RAY DIFFRACTION	100
3.14-3.23	0.3489	155	0.2498	2660	X-RAY DIFFRACTION	100
3.23-3.33	0.2891	152	0.2334	2700	X-RAY DIFFRACTION	100
3.33-3.45	0.2671	134	0.2112	2684	X-RAY DIFFRACTION	100
3.45-3.59	0.2349	161	0.1877	2672	X-RAY DIFFRACTION	100
3.59-3.75	0.2326	149	0.1862	2692	X-RAY DIFFRACTION	100
3.75-3.95	0.2582	116	0.1895	2747	X-RAY DIFFRACTION	100
3.95-4.2	0.2329	129	0.168	2721	X-RAY DIFFRACTION	100
4.2-4.52	0.1869	158	0.1511	2713	X-RAY DIFFRACTION	100
4.52-4.98	0.1934	168	0.1483	2710	X-RAY DIFFRACTION	100
4.98-5.7	0.2334	146	0.1691	2764	X-RAY DIFFRACTION	100
5.7-7.17	0.2294	139	0.1825	2801	X-RAY DIFFRACTION	100
7.18-50.07	0.2003	145	0.1652	2929	X-RAY DIFFRACTION	100

Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

ID	L11 (°²)	L12 (°²)	L13 (°²)	L22 (°²)	L23 (°²)	L33 (°²)	S11 (Å °)	S12 (Å °)	S13 (Å °)	S21 (Å °)	S22 (Å °)	S23 (Å °)	S31 (Å °)	S32 (Å °)	S33 (Å °)	T11 (Å²)	T12 (Å²)	T13 (Å²)	T22 (Å²)	T23 (Å²)	T33 (Å²)	Origin x (Å)	Origin y (Å)	Origin z (Å)
1	0.014	-0.0333	0.0165	0.0582	-0.0299	0.0199	0.0013	-0.2289	-0.0524	0.1018	0.0163	0.2559	0.0458	0.219	0	0.5034	-0.0129	-0.001	0.5652	-0.0715	0.5365	-15.0674	41.2147	-13.2289
2	0.0431	0.0829	-0.0074	0.1441	0.004	0.0738	0.0586	0.0672	0.1577	-0.2439	-0.142	0.0102	-0.2618	0.0535	0.0001	0.4804	0.0457	-0.0429	0.4062	0.0659	0.6198	-27.4579	48.8213	-27.5259
3	0.0254	0.0307	-0.0343	0.0348	-0.0328	0.0345	0.1172	0.1225	-0.2451	-0.0438	-0.2982	0.4514	-0.218	-0.1327	0	0.5444	0.0272	-0.1098	0.6212	-0.0898	0.6481	-49.1283	43.2141	-29.9796
4	0.3428	-0.0493	0.305	0.4112	0.0784	0.2671	-0.0057	0.123	-0.0233	-0.0535	-0.0573	0.0183	0.0106	-0.1194	-0	0.4401	0.0428	-0.0082	0.5482	-0.0637	0.4156	-28.6214	26.8799	-21.4106
5	0.0845	0.0197	-0.0326	-0	0.0274	0.1598	-0.055	-0.0663	-0.023	0.115	0.025	0.0075	-0.1619	0.0641	0	0.5129	0.061	-0.0315	0.5522	-0.045	0.4202	-8.7653	26.4065	7.1714
6	0.0097	0.0223	0.004	0.0541	0.0116	0.0022	-0.0363	0.0306	-0.1097	0.0498	-0.0938	-0.1684	0.1429	0.3896	-0	0.5188	0.0685	-0.0438	0.6935	0.0899	0.5068	19.3882	9.105	9.1726
7	0.1146	-0.0076	0.1831	0.106	-0.0819	0.2061	0.0234	0.0007	-0.0217	0.0103	-0.0219	-0.0084	0.1203	0.0008	-0	0.4664	0.0876	-0.0016	0.5172	-0.0327	0.4052	0.032	9.3681	-3.8811
8	0.1864	-0.2007	0.0024	0.1803	-0.0687	0.139	0.0793	-0.0222	0.024	0.0132	0.0009	0.0588	0.0852	0.1699	-0	0.4666	0.004	-0.0052	0.5642	-0.0319	0.441	-1.3048	24.4405	-15.5286
9	0.0112	-0.0412	0.0146	0.0936	-0.0375	0.0192	-0.22	0.0492	-0.2579	0.1263	-0.1174	0.0392	0.1934	-0.1119	-0.2382	0.5336	-0.0373	0.2658	0.4419	-0.4497	1.183	-6.7408	-16.8445	-44.5468
10	0.1408	-0.1179	0.0904	0.1057	-0.0245	0.2537	-0.2045	-0.1234	0.0401	-0.0123	-0.2011	0.1317	0.2425	-0.0514	-0.243	0.5561	-0.0839	0.6065	0.6111	-0.4708	1.4593	-3.6715	-25.4533	-44.0142
11	0.5734	0.2917	0.413	1.0433	-0.0711	1.1473	-0.2095	0.4608	-0.3494	-0.238	-0.481	0.427	0.0096	-0.273	-1.839	0.4388	-0.0124	0.1552	0.4659	-0.5164	0.7844	7.7773	-14.3564	-58.2547
12	0.0605	-0.0651	0.0663	0.0777	-0.0116	0.0645	0.1506	-0.2203	0.0082	-0.1057	-0.1589	-0.0824	0.107	0.0885	-0	0.5007	-0.0892	0.0616	0.5677	-0.0933	0.5201	29.5384	-9.6819	-54.8511
13	0.1337	-0.0585	-0.1921	0.1228	0.0181	0.1851	-0.0894	0.243	-0.029	-0.084	0.0493	-0.0634	-0.1684	-0.0349	0	0.4271	0.0153	0.0108	0.4417	-0.1243	0.4763	9.3085	-0.0839	-44.4802
14	0.0364	-0.0549	-0.0882	0.0462	0.1046	0.1457	-0.0782	-0.0131	-0.103	0.1148	0.1157	0.0941	0.0179	0.1378	0	0.5483	0.1	-0.0239	0.5032	-0.1417	0.5714	5.8084	-11.2475	-31.6934
15	0.0662	-0.0255	-0.0071	0.0048	0.0253	0.018	-0.0002	-0.0373	-0.1587	-0.0254	0.1373	-0.1385	-0.122	0.1749	-0	0.52	0.0662	0.0015	0.5968	-0.1604	0.6073	13.3209	-10.3143	-27.4819
16	0	0.0025	-0.0059	0.0438	-0.0076	0.0121	-0.0537	0.1201	0.1236	-0.1272	0.0949	0.0901	0.2333	-0.3634	-0	1.1308	-0.059	0.1847	0.5963	-0.0298	0.7284	-3.6943	-24.0595	-23.2546
17	-0.0013	0.0072	0.0034	0.0036	0.0035	0.0008	0.0143	0.1246	-0.2029	-0.0175	0.0275	0.1722	0.0507	-0.1445	0	1.2565	-0.0684	0.043	0.609	-0.0777	0.831	-7.7289	-30.1998	-28.4142
18	0.1119	0.015	0.0254	0.0178	0.0004	0.0141	-0.039	-0.0505	-0.0359	-0.0843	0.1355	0.4595	0.3591	-0.1643	0.1085	1.0136	-0.2189	0.075	0.434	0.1229	0.6872	-13.0854	-29.8802	-12.3695
19	0.0131	-0.0109	0.0054	0.009	-0.0083	-0.0007	-0.0234	-0.0469	-0.1197	0.1863	0.0614	0.1011	-0.0514	-0.0601	0	0.777	-0.1	0.2069	0.83	0.1149	0.9094	-33.2913	-19.9286	1.073
20	0.004	-0.0057	0.0119	0.0089	-0.0199	0.0422	0.055	-0.0981	0.0143	0.0319	0.045	0.1235	0.0642	-0.2574	-0.0355	0.5803	-0.4252	0.2804	1.0051	0.0729	1.3584	-40.5038	-18.8399	-6.4288
21	0.0259	-0.0025	-0.0216	0.0656	-0.024	0.015	0.0883	-0.0556	-0.3438	0.1471	-0.0686	0.1718	0.0909	-0.2263	-0	0.5737	-0.0069	0.0061	0.6409	-0.0355	0.6765	-22.5609	-10.7833	-11.9605
22	0.1549	-0.1009	0.1125	0.0171	-0.0642	0.0969	0.0219	0.0236	-0.0764	0.0891	-0.0446	-0.0032	0.1969	-0.2538	-0	0.5088	-0.0219	-0.0148	0.5484	-0.0463	0.4663	-16.5172	-9.3077	-21.279
23	0.0384	-0.0094	0.0385	0.002	-0.0083	0.015	0.1038	0.0062	-0.0737	-0.0606	0.1253	0.0717	-0.1536	-0.4316	0.0002	0.4316	-0.0119	-0.0445	0.6687	-0.0768	0.5928	-21.7819	-6.411	-32.9166

Refinement TLS group

ID	Refine-ID	Refine TLS-ID	Selection details
1	X-RAY DIFFRACTION	1	chain 'A' and (resid 8 through 59 )
2	X-RAY DIFFRACTION	2	chain 'A' and (resid 60 through 143 )
3	X-RAY DIFFRACTION	3	chain 'A' and (resid 144 through 195 )
4	X-RAY DIFFRACTION	4	chain 'A' and (resid 196 through 395 )
5	X-RAY DIFFRACTION	5	chain 'B' and (resid 9 through 123 )
6	X-RAY DIFFRACTION	6	chain 'B' and (resid 124 through 182 )
7	X-RAY DIFFRACTION	7	chain 'B' and (resid 183 through 293 )
8	X-RAY DIFFRACTION	8	chain 'B' and (resid 294 through 396 )
9	X-RAY DIFFRACTION	9	chain 'C' and (resid 8 through 35 )
10	X-RAY DIFFRACTION	10	chain 'C' and (resid 36 through 59 )
11	X-RAY DIFFRACTION	11	chain 'C' and (resid 60 through 143 )
12	X-RAY DIFFRACTION	12	chain 'C' and (resid 144 through 195 )
13	X-RAY DIFFRACTION	13	chain 'C' and (resid 196 through 293 )
14	X-RAY DIFFRACTION	14	chain 'C' and (resid 294 through 357 )
15	X-RAY DIFFRACTION	15	chain 'C' and (resid 358 through 396 )
16	X-RAY DIFFRACTION	16	chain 'D' and (resid 8 through 35 )
17	X-RAY DIFFRACTION	17	chain 'D' and (resid 36 through 59 )
18	X-RAY DIFFRACTION	18	chain 'D' and (resid 60 through 122 )
19	X-RAY DIFFRACTION	19	chain 'D' and (resid 123 through 143 )
20	X-RAY DIFFRACTION	20	chain 'D' and (resid 144 through 182 )
21	X-RAY DIFFRACTION	21	chain 'D' and (resid 183 through 225 )
22	X-RAY DIFFRACTION	22	chain 'D' and (resid 226 through 357 )
23	X-RAY DIFFRACTION	23	chain 'D' and (resid 358 through 395 )

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