SAXSdb — 1k27

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1. Protein Identity and Related Structures Protein Identity & Related Structures

;5'-Deoxy-5'-Methylthioadenosine Phosphorylase ;

Homo sapiens

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein homooligomer Homooligomer Protein × 3 PDB declaration: trimeric（3） Consistent with protein copy count	Chain A； UniProt 1–283	Not recorded	PO4 PHOSPHATE ION × 3 MTM (3S,4R)-2-(4-AMINO-5H-PYRROLO[3,2-D]PYRIMIDIN-7-YL)-5-[(METHYLSULFANYL)METHYL]PYRROLIDINE-3,4-DIOL × 3	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 8；298 K；PEG 6000, Spermidine, Tris, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.95 Å R-free 0.207

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 1K27	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1CB0 STRUCTURE OF HUMAN 5'-DEOXY-5'-METHYLTHIOADENOSINE PHOSPHORYLASE AT 1.7 A RESOLUTION Deposited 1999-02-26	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Mutation：ILE56VAL	ADE ADENINE × 3	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.4；pH 7.4	Resolution 1.70 Å R-free 0.202
1CG6 STRUCTURE OF HUMAN 5'-DEOXY-5'-METHYLTHIOADENOSINE PHOSPHORYLASE COMPLEXED WITH 5'-DEOXY-5'-METHYLTHIOADENOSINE AND SULFATE AT 1.7 A RESOLUTION Deposited 1999-03-27	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Mutation：ILE56VAL	SO4 SULFATE ION × 3 MTA 5'-DEOXY-5'-METHYLTHIOADENOSINE × 3	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.4；12% (W/V) PEG 6000, 25% (V/V) ETHYLENE GLYCOL, 0.2M TRIS-HCL PH 7.8, 0.002M DTT, pH 7.4	Resolution 1.70 Å R-free 0.225
1SD1 STRUCTURE OF HUMAN 5'-DEOXY-5'-METHYLTHIOADENOSINE PHOSPHORYLASE COMPLEXED WITH FORMYCIN A Deposited 2004-02-12	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	FMC (1S)-1-(7-amino-1H-pyrazolo[4,3-d]pyrimidin-3-yl)-1,4-anhydro-D-ribitol × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.8；298 K；12% (W/V) PEG 6000, 25%(V/V) ETHYLENE GLYCOL, 0.2M Tris-HCL, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.03 Å R-free 0.198
1SD2 STRUCTURE OF HUMAN 5'-DEOXY-5'-METHYLTHIOADENOSINE PHOSPHORYLASE COMPLEXED WITH 5'-METHYLTHIOTUBERCIDIN Deposited 2004-02-12	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	SO4 SULFATE ION × 3 MTH 2-(4-AMINO-PYRROLO[2,3-D]PYRIMIDIN-7-YL)-5-METHYLSULFANYLMETHYL-TETRAHYDRO-FURAN-3,4-DIOL × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.8；298 K；12% (W/V) PEG 6000, 25%(V/V) ETHYLENE GLYCOL, 0.2M Tris-HCL, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.10 Å R-free 0.207
3LN5 Crystal structure of HLA-B*4104 in complex with a 11mer self-peptide derived from S-methyl-5-thioadenosine phosphorylase Deposited 2010-02-02	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain C 227–237（11 aa） Fragment：UNP residues 227-237	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；294 K；0.1M citrate pH 5.6, 14-20% PEG 4000, 0.2M NH4OAc, VAPOR DIFFUSION, HANGING DROP, temperature 294K	Resolution 1.90 Å R-free 0.241
3OZC Crystal Structure of human 5'-deoxy-5'-methyladenosine phosphorylase in complex with pCl-phenylthioDADMeImmA Deposited 2010-09-24	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	4CT (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-{[(4-chlorophenyl)sulfanyl]methyl}pyrrolidin-3-ol × 3 PO4 PHOSPHATE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.2；291 K；0.2M NaCl, 0.1M phosphate buffer, 10% PEG 8000, pH 6.2, vapor diffusion, sitting drop, temperature 291K	Resolution 1.93 Å R-free 0.154
3OZD Crystal Structure of human 5'-deoxy-5'-methyladenosine phosphorylase in complex with pCl-phenylthioDADMeImmA Deposited 2010-09-24	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	4CT (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-{[(4-chlorophenyl)sulfanyl]methyl}pyrrolidin-3-ol × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；291 K；2M NaCl, 0.1M sodium acetate, pH 4.6, vapor diffusion, sitting drop, temperature 291K	Resolution 2.10 Å R-free 0.257
3OZD Crystal Structure of human 5'-deoxy-5'-methyladenosine phosphorylase in complex with pCl-phenylthioDADMeImmA Deposited 2010-09-24	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain B 1–283（283 aa）	Not recorded	4CT (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-{[(4-chlorophenyl)sulfanyl]methyl}pyrrolidin-3-ol × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；291 K；2M NaCl, 0.1M sodium acetate, pH 4.6, vapor diffusion, sitting drop, temperature 291K	Resolution 2.10 Å R-free 0.257
3OZE Crystal Structure of human 5'-deoxy-5'-methyladenosine phosphorylase Deposited 2010-09-24	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa） Chain B 1–283（283 aa） Chain C 1–283（283 aa）	Not recorded	PO4 PHOSPHATE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；200mM NaCl, 0.1M Hepes, 20% PEG3000, pH 7.5, vapor diffusion, sitting drop, temperature 291K	Resolution 2.00 Å R-free 0.262
3OZE Crystal Structure of human 5'-deoxy-5'-methyladenosine phosphorylase Deposited 2010-09-24	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain D 1–283（283 aa） Chain E 1–283（283 aa） Chain F 1–283（283 aa）	Not recorded	PO4 PHOSPHATE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；291 K；200mM NaCl, 0.1M Hepes, 20% PEG3000, pH 7.5, vapor diffusion, sitting drop, temperature 291K	Resolution 2.00 Å R-free 0.262
5EUB Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with 2-amino-MTA and sulfate Deposited 2015-11-18	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	SO4 SULFATE ION × 6 5S7 (2~{R},3~{R},4~{S},5~{S})-2-[2,6-bis(azanyl)purin-9-yl]-5-(methylsulfanylmethyl)oxolane-3,4-diol × 3 CL CHLORIDE ION × 3 GOL GLYCEROL × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；295 K；Protein 15 mg/mL, Reservoir 0.2 M magnesium chloride, 20% (w/v) PEG 3350	Resolution 1.81 Å R-free 0.193
5TC5 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with butylthio-DADMe-Immucillin-A and chloride Deposited 2016-09-14	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa） Chain B 1–283（283 aa） Chain C 1–283（283 aa）	Not recorded	BIG (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-[(butylsulfanyl)methyl]pyrrolidin-3-ol × 3 CL CHLORIDE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；Protein (15 mg/mL); Reservoir (3 M sodium chloride and 0.1 M sodium acetate (pH 4.5))	Resolution 1.96 Å R-free 0.217
5TC6 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with propylthio-immucillin-A Deposited 2016-09-14	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	7A6 (2S,3S,4R,5S)-2-(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)-5-[(propylsulfanyl)methyl]pyrrolidine-3,4-diol × 3 PO4 PHOSPHATE ION × 3 GOL GLYCEROL × 3 NA SODIUM ION × 3 CL CHLORIDE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；Protein (15 mg/mL); Reservoir (0.17 M sodium acetate, 85 mM Tris:HCl (pH 8.5), 25% (w/v) PEG 4000 and 15% (v/v) glycerol)	Resolution 1.48 Å R-free 0.185
5TC7 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with 5'-methylthiotubercidin at 1.75 angstrom Deposited 2016-09-14	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	PO4 PHOSPHATE ION × 9 MTH 2-(4-AMINO-PYRROLO[2,3-D]PYRIMIDIN-7-YL)-5-METHYLSULFANYLMETHYL-TETRAHYDRO-FURAN-3,4-DIOL × 3 CL CHLORIDE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；295 K；Protein (15 mg/mL); Reservoir (0.2 M lithium sulfate, 0.1 M TRIS pH 8.5 and 20% (w/v) PEG 4000)	Resolution 1.75 Å R-free 0.184
5TC8 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with methylthio-DADMe-Immucillin-A Deposited 2016-09-14	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	TDI (3R,4S)-1-[(4-AMINO-5H-PYRROLO[3,2-D]PYRIMIDIN-7-YL)METHYL]-4-[(METHYLSULFANYL)METHYL]PYRROLIDIN-3-OL × 3 PO4 PHOSPHATE ION × 3 MG MAGNESIUM ION × 6 CL CHLORIDE ION × 3 2PE NONAETHYLENE GLYCOL × 3 PEG DI(HYDROXYETHYL)ETHER × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；295 K；Protein (15 mg/mL); Reservoir (0.2 M magnesium chloride, 0.1 M sodium citrate:citric acid (pH 5.5) and 40% (v/v) PEG 400)	Resolution 1.80 Å R-free 0.180
6DYZ Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with (3R,4S)-1-((4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl)-4-((prop-2-yn-1-ylthio)methyl)pyrrolidin-3-ol Deposited 2018-07-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	CL CHLORIDE ION × 6 PO4 PHOSPHATE ION × 3 EDO 1,2-ETHANEDIOL × 9 OS2 (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-{[(prop-2-yn-1-yl)sulfanyl]methyl}pyrrolidin-3-ol × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；100 mM HEPES, pH 7.0, 10% w/v PEG6000	Resolution 1.62 Å R-free 0.190
6DZ0 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with (3R,4S)-1-((4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl)-4-((pent-4-yn-1-ylthio)methyl)pyrrolidin-3-ol Deposited 2018-07-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa）	Not recorded	PO4 PHOSPHATE ION × 3 EDO 1,2-ETHANEDIOL × 15 OS3 (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-{[(pent-4-yn-1-yl)sulfanyl]methyl}pyrrolidin-3-ol × 3 CL CHLORIDE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；100 mM HEPES, pH 7.0, 10% w/v PEG6000	Resolution 1.62 Å R-free 0.176
6DZ2 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with (3R,4S)-1-((4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl)-4-(((3-(1-benzyl-1H-1,2,3-triazol-4-yl)propyl)thio)methyl)pyrrolidin-3-ol Deposited 2018-07-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa） Chain B 1–283（283 aa） Chain C 1–283（283 aa）	Not recorded	EDO 1,2-ETHANEDIOL × 10 CL CHLORIDE ION × 4 ACY ACETIC ACID × 1 OS5 (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-({[3-(1-benzyl-1H-1,2,3-triazol-4-yl)propyl]sulfanyl}methyl)pyrrolidin-3-ol × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；295 K；100 mM sodium acetate trihydrate, pH 4.6, 2.0 M sodium chloride	Resolution 1.99 Å R-free 0.236
6DZ3 Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with (3R,4S)-1-((4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl)-4-(((3-(1-butyl-1H-1,2,3-triazol-4-yl)propyl)thio)methyl)pyrrolidin-3-ol Deposited 2018-07-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 1–283（283 aa） Chain B 1–283（283 aa） Chain C 1–283（283 aa）	Not recorded	CL CHLORIDE ION × 5 EDO 1,2-ETHANEDIOL × 7 OS6 (3R,4S)-1-[(4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-4-({[3-(1-butyl-1H-1,2,3-triazol-4-yl)propyl]sulfanyl}methyl)pyrrolidin-3-ol × 3 ACY ACETIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；295 K；100 mM sodium acetate trihydrate, pH 4.6, 2.0 M sodium chloride	Resolution 1.91 Å R-free 0.220

17 other PDB entries and 19 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	MTAP_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–283； UniProt 1–283

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1k27
Deposition date deposition_date	2001-09-26
Structure title title	Crystal Structure of 5'-Deoxy-5'-Methylthioadenosine Phosphorylase in Complex with a Transition State Analogue
Keywords keywords	MTAP, methylthioadenosine phosphorylase, transition state analogue, phosphate, TRANSFERASE; TRANSFERASE
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	18.94 Å
Radius of gyration Rg (electron density) rg_electron	17.80 Å
Forward intensity I(0) i0	16228700.00
Molecular weight molecular_weight	30171.0 kDa
Excluded volume excluded_volume	37726 Å³
Envelope volume envelope_volume	42510 Å³
Hydration-shell volume shell_volume	19554 Å³
Envelope diameter envelope_diameter	61.0 Å
Shell Rg shell_rg	24.43 Å
Envelope Rg envelope_rg	18.16 Å
Shape Rg shape_rg	17.82 Å
Total Rg total_rg	18.71 Å
Total atoms total_atoms	2109
Residues n_residues	270
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	55.8 Å
Rg (real space) rg_real	18.82 Å
Rg uncertainty (real space) rg_real_error	0.08 Å
I(0) (real space) i0_real	1.5680e+07
I(0) uncertainty (real space) i0_real_error	1.2920e+05
Rg (reciprocal space) rg_reciprocal	18.83 Å
I(0) (reciprocal space) i0_reciprocal	16230000.0000
Solution quality estimate total_estimate	0.7184
Solution quality rating solution_quality	REASONABLE a REASONABLE solution
P(r) peaks n_peaks	1
Primary peak position r_peak_primary	24.0 Å
Skewness Skewness skewness	0.143
Kurtosis Kurtosis kurtosis	-0.452
Angular range angular_range	— – 0.4200 Å⁻¹
Current regularization parameter α current_alpha	10.1400
Highest regularization parameter α highest_alpha	4559000.0000
Real-space data points n_real_points	73
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.962; Stabil: 0.919; Sysdev: 0.000; Positv: 1.000; Valcen: 0.984; Smooth: 0.729

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	;5'-Deoxy-5'-Methylthioadenosine Phosphorylase ;
Molecular weight formula_weight	31277.1 kDa
EC 编号 ec_number	2.4.2.28
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2247

MASGTTTTAVKIGIIGGTGLDDPEILEGRTEKYVDTPFGKPSDALILGKIKNVDCVLLARHGRQHTIMPSKVNYQANIWALKEEGCTHVIVTTACGSLREEIQPGDIVIIDQFIDRTTMRPQSFYDGSHSCARGVCHIPMAEPFCPKTREVLIETAKKLGLRCHSKGTMVTIEGPRFSSRAESFMFRTWGADVINMTTVPEVVLAKEAGICYASIAMATDYDCWKEHEEAVSVDRVLKTLKENANKAKSLLLTTIPQIGSTEWSETLHNLKNMAQFSVLLPRH

来源 Source

来源生物 organism	Homo sapiens
通用名 common_name	human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	(3S,4R)-2-(4-AMINO-5H-PYRROLO[3,2-D]PYRIMIDIN-7-YL)-5-[(METHYLSULFANYL)METHYL]PYRROLIDINE-3,4-DIOL
Molecular weight formula_weight	297.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	138

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7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1k27a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.56 — Phosphorylase/hydrolase-like
Superfamily Superfamily superfamily	c.56.2 — Purine and uridine phosphorylases
Family Family family	c.56.2.1 — Purine and uridine phosphorylases

CATH v4.4 (1 domains)

Domain ID domain_id	1k27A00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1580 — Nucleoside phosphorylase domain

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8. Citations (1)

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Unit-cell length a length_a	122.231 Å
Unit-cell length b length_b	122.231 Å
Unit-cell length c length_c	44.743 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 3 2 1
Space-group number int_tables_number	150
Crystal system crystal_system	—

Resolution resolution	1.950 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.1830
R_work r_work	0.1800
R_free r_free	0.2070

fit	/app/data/saxs_computation/k2/1k27/1k27.fit
pddf	/app/data/pr_computation/k2/1k27/1k27.pr.out
profile	/app/data/saxs_computation/k2/1k27/1k27.dat

Crystal Structure of 5'-Deoxy-5'-Methylthioadenosine Phosphorylase in Complex with a Transition State Analogue

1. Protein Identity and Related Structures Protein Identity & Related Structures

;5'-Deoxy-5'-Methylthioadenosine Phosphorylase ;

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction