3ffi

HIV-1 RT with pyridone non-nucleoside inhibitor

Method: X-RAY DIFFRACTION

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

Reverse transcriptase/ribonuclease H

HIV-1 M:B_HXB2R

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	3-chloro-5-({6-[2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl]-3-(dimethylamino)-2-oxo-1,2-dihydropyridin-4-yl}oxy)benzonitrile × 1 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	3-chloro-5-({6-[2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl]-3-(dimethylamino)-2-oxo-1,2-dihydropyridin-4-yl}oxy)benzonitrile × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	POL_HV1H2
Isoform	—
PDB entities	1, 2
Chains and sequence ranges	Author chain A； PDBConstruct 2–561； UniProt 588–1147 Author chain B； PDBConstruct 2–441； UniProt 588–1027

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	3ffi
Deposition date deposition_date	2008-12-03
Structure title title	HIV-1 RT with pyridone non-nucleoside inhibitor
Keywords keywords	;HIV, RT, REVERSE TRANSCRIPTASE, TRANSFERASE RNA-DIRECTED DNA POLYMERASE, NUCLEOTIDYLTRANSFERASE, AIDS, Cytoplasm, Transferase, Viral nucleoprotein, Hydrolase ;; 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.

3ffi__assembly_1__model_1

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

Download this curve (.dat)

3ffi__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3ffi__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	34.81 Å
Rg (electron density)	34.03 Å
Total Rg	34.75 Å
Atom count	7843
Residues	952
Excluded volume	141190 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3ffi__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3ffi__assembly_2__model_1`	tetrameric （4）	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 (4)

Entity 1 Entity 1 polymer

Description description	Reverse transcriptase/ribonuclease H
Molecular weight formula_weight	64694.1 kDa
EC 编号 ec_number	2.7.7.49, 2.7.7.7, 3.1.26.4
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	7903

MPISPIETVPVKLKPGMDGPKVKQWPLTEEKIKALVEICTEMEKEGKISKIGPENPYNTPVFAIKKKDSTKWRKLVDFRELNKRTQDFWEVQLGIPHPAGLKKKKSVTVLDVGDAYFSVPLDEDFRKYTAFTIPSINNETPGIRYQYNVLPQGWKGSPAIFQSSMTKILEPFRKQNPDIVIYQYMDDLYVGSDLEIGQHRTKIEELRQHLLRWGLTTPDKKHQKEPPFLWMGYELHPDKWTVQPIVLPEKDSWTVNDIQKLVGKLNWASQIYPGIKVRQLCKLLRGTKALTEVIPLTEEAELELAENREILKEPVHGVYYDPSKDLIAEIQKQGQGQWTYQIYQEPFKNLKTGKYARMRGAHTNDVKQLTEAVQKITTESIVIWGKTPKFKLPIQKETWETWWTEYWQATWIPEWEFVNTPPLVKLWYQLEKEPIVGAETFYVDGAANRETKLGKAGYVTNRGRQKVVTLTDTTNQKTELQAIYLALQDSGLEVNIVTDSQYALGIIQAQPDQSESELVNQIIEQLIKKEKVYLAWVPAHKGIGGNEQVDKLVSAGIRKVL

Source Source

Source organism organism	HIV-1 M:B_HXB2R
Common name common_name	HIV-1
NCBI taxonomy ID ncbi_taxonomy_id	11706
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	RT p51
Molecular weight formula_weight	51530.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

Source Source

Source organism organism	HIV-1 M:B_HXB2R
Common name common_name	HIV-1
NCBI taxonomy ID ncbi_taxonomy_id	11706
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	3-chloro-5-({6-[2-(3,4-dihydroisoquinolin-2(1H)-yl)-2-oxoethyl]-3-(dimethylamino)-2-oxo-1,2-dihydropyridin-4-yl}oxy)benzonitrile
Molecular weight formula_weight	462.9 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	60

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d3ffia1
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.8 — DNA/RNA polymerases
Superfamily Superfamily superfamily	e.8.1 — DNA/RNA polymerases
Family Family family	e.8.1.2 — Reverse transcriptase

Domain ID domain_id	d3ffia2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.3 — Ribonuclease H-like
Family Family family	c.55.3.0 — automated matches

Domain ID domain_id	d3ffib_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.8 — DNA/RNA polymerases
Superfamily Superfamily superfamily	e.8.1 — DNA/RNA polymerases
Family Family family	e.8.1.2 — Reverse transcriptase

CATH v4.4 (9 domains)

Domain ID domain_id	3ffiA01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	10 — HIV Type 1 Reverse Transcriptase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — HIV Type 1 Reverse Transcriptase, subunit A, domain 1

Domain ID domain_id	3ffiA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	270 — Reverse transcriptase/Diguanylate cyclase domain

Domain ID domain_id	3ffiA03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	270 — Reverse transcriptase/Diguanylate cyclase domain

Domain ID domain_id	3ffiA04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	270 — Reverse transcriptase/Diguanylate cyclase domain

Domain ID domain_id	3ffiA05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	10 — Ribonuclease H-like superfamily/Ribonuclease H

Domain ID domain_id	3ffiB01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	10 — HIV Type 1 Reverse Transcriptase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — HIV Type 1 Reverse Transcriptase, subunit A, domain 1

Domain ID domain_id	3ffiB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	270 — Reverse transcriptase/Diguanylate cyclase domain

Domain ID domain_id	3ffiB03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	270 — Reverse transcriptase/Diguanylate cyclase domain

Domain ID domain_id	3ffiB04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	270 — Reverse transcriptase/Diguanylate cyclase domain

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Unit-cell length a length_a	117.112 Å
Unit-cell length b length_b	153.052 Å
Unit-cell length c length_c	153.102 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	46.780 Å
R factor r_factor	0.2367
R_work r_work	0.2341
R_free r_free	0.2845

HIV-1 RT with pyridone non-nucleoside inhibitor

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

Reverse transcriptase/ribonuclease H

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

3ffi__assembly_1__model_1

3ffi__assembly_1__model_1 | I(q)

3ffi__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (3 domains)

CATH v4.4 (9 domains)

7. Citations (1)

HIV-1 RT with pyridone non-nucleoside inhibitor

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

Reverse transcriptase/ribonuclease H

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

3ffi__assembly_1__model_1

3ffi__assembly_1__model_1 | I(q)

3ffi__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (3 domains)

CATH v4.4 (9 domains)

7. Citations (1)