3b4t

Crystal structure of Mycobacterium tuberculosis RNase PH, the Mycobacterium tuberculosis Structural Genomics Consortium target Rv1340

Method: X-RAY DIFFRACTION

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

Ribonuclease PH

Mycobacterium tuberculosis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	PHOSPHATE ION × 10 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RNPH_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 5–262； UniProt 2–259 Author chain B； PDBConstruct 5–262； UniProt 2–259 Author chain C； PDBConstruct 5–262； UniProt 2–259 Author chain D； PDBConstruct 5–262； UniProt 2–259 Author chain E； PDBConstruct 5–262； UniProt 2–259 Author chain F； PDBConstruct 5–262； UniProt 2–259

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	3b4t
Deposition date deposition_date	2007-10-24
Structure title title	Crystal structure of Mycobacterium tuberculosis RNase PH, the Mycobacterium tuberculosis Structural Genomics Consortium target Rv1340
Keywords keywords	;RNase, tRNA nucleotidyltransferase, ribonuclease, RPHA, Structural Genomics, TBSGC, Mycobacterium tuberculosis Structural Genomics Consortium, tRNA processing, TB Structural Genomics Consortium, PSI, Protein Structure Initiative, TRANSFERASE ;; TRANSFERASE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

3b4t__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3b4t__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3b4t__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	34.97 Å
Rg (electron density)	34.41 Å
Total Rg	34.98 Å
Atom count	10699
Residues	1442
Excluded volume	189120 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3b4t__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Ribonuclease PH
Molecular weight formula_weight	27631.3 kDa
EC 编号 ec_number	2.7.7.56
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	11806

GSHVSKREDGRLDHELRPVIITRGFTENPAGSVLIEFGHTKVLCTASVTEGVPRWRKATGLGWLTAEYAMLPSATHSRSDRESVRGRLSGRTQEISRLIGRSLRACIDLAALGENTIAIDCDVLQADGGTRTAAITGAYVALADAVTYLSAAGKLSDPRPLSCAIAAVSVGVVDGRIRVDLPYEEDSRAEVDMNVVATDTGTLVEIQGTGEGATFARSTLDKLLDMALGACDTLFAAQRDALALPYPGVLPQGPPPPKAFGT

Source Source

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	83332
Host organism host_organism	Escherichia coli

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	10

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1107

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6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d3b4ta1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.14 — Ribosomal protein S5 domain 2-like
Superfamily Superfamily superfamily	d.14.1 — Ribosomal protein S5 domain 2-like
Family Family family	d.14.1.0 — automated matches

Domain ID domain_id	d3b4ta2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.101 — Ribonuclease PH domain 2-like
Superfamily Superfamily superfamily	d.101.1 — Ribonuclease PH domain 2-like
Family Family family	d.101.1.0 — automated matches

Domain ID domain_id	d3b4tb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.14 — Ribosomal protein S5 domain 2-like
Superfamily Superfamily superfamily	d.14.1 — Ribosomal protein S5 domain 2-like
Family Family family	d.14.1.0 — automated matches

Domain ID domain_id	d3b4tb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.101 — Ribonuclease PH domain 2-like
Superfamily Superfamily superfamily	d.101.1 — Ribonuclease PH domain 2-like
Family Family family	d.101.1.0 — automated matches

Domain ID domain_id	d3b4tc1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.14 — Ribosomal protein S5 domain 2-like
Superfamily Superfamily superfamily	d.14.1 — Ribosomal protein S5 domain 2-like
Family Family family	d.14.1.0 — automated matches

Domain ID domain_id	d3b4tc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.101 — Ribonuclease PH domain 2-like
Superfamily Superfamily superfamily	d.101.1 — Ribonuclease PH domain 2-like
Family Family family	d.101.1.0 — automated matches

Domain ID domain_id	d3b4td1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.14 — Ribosomal protein S5 domain 2-like
Superfamily Superfamily superfamily	d.14.1 — Ribosomal protein S5 domain 2-like
Family Family family	d.14.1.0 — automated matches

Domain ID domain_id	d3b4td2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.101 — Ribonuclease PH domain 2-like
Superfamily Superfamily superfamily	d.101.1 — Ribonuclease PH domain 2-like
Family Family family	d.101.1.0 — automated matches

Domain ID domain_id	d3b4te1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.14 — Ribosomal protein S5 domain 2-like
Superfamily Superfamily superfamily	d.14.1 — Ribosomal protein S5 domain 2-like
Family Family family	d.14.1.0 — automated matches

Domain ID domain_id	d3b4te2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.101 — Ribonuclease PH domain 2-like
Superfamily Superfamily superfamily	d.101.1 — Ribonuclease PH domain 2-like
Family Family family	d.101.1.0 — automated matches

Domain ID domain_id	d3b4tf1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.14 — Ribosomal protein S5 domain 2-like
Superfamily Superfamily superfamily	d.14.1 — Ribosomal protein S5 domain 2-like
Family Family family	d.14.1.0 — automated matches

Domain ID domain_id	d3b4tf2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.101 — Ribonuclease PH domain 2-like
Superfamily Superfamily superfamily	d.101.1 — Ribonuclease PH domain 2-like
Family Family family	d.101.1.0 — automated matches

CATH v4.4 (6 domains)

Domain ID domain_id	3b4tA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	70 — GHMP Kinase, N-terminal domain

Domain ID domain_id	3b4tB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	70 — GHMP Kinase, N-terminal domain

Domain ID domain_id	3b4tC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	70 — GHMP Kinase, N-terminal domain

Domain ID domain_id	3b4tD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	70 — GHMP Kinase, N-terminal domain

Domain ID domain_id	3b4tE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	70 — GHMP Kinase, N-terminal domain

Domain ID domain_id	3b4tF01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	70 — GHMP Kinase, N-terminal domain

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Unit-cell length a length_a	73.529 Å
Unit-cell length b length_b	152.406 Å
Unit-cell length c length_c	83.512 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	109.46 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	39.690 Å
R factor r_factor	—
R_work r_work	0.1940
R_free r_free	0.2290

Crystal structure of Mycobacterium tuberculosis RNase PH, the Mycobacterium tuberculosis Structural Genomics Consortium target Rv1340

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

Ribonuclease PH

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3b4t__assembly_1__model_1

3b4t__assembly_1__model_1 | I(q)

3b4t__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (12 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal structure of Mycobacterium tuberculosis RNase PH, the Mycobacterium tuberculosis Structural Genomics Consortium target Rv1340

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

Ribonuclease PH

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3b4t__assembly_1__model_1

3b4t__assembly_1__model_1 | I(q)

3b4t__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (12 domains)

CATH v4.4 (6 domains)

7. Citations (1)