10jt

CRYSTAL STRUCTURE OF KIRSTEN RAT SARCOMA G12C COMPLEXED WITH GMPPNP AND COVALENTLY BOUND TO 1-[(2R,3R)-3-{[(7P)-7-(8-ethynyl-7-fluoronaphthalen-1-yl)-8-fluoro-2-{ [(2R,4R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl]methoxy}pyrido[4,3-d] pyrimidin-4-yl](methyl)amino}-2-methylpyrrolidin-1-yl]-3-(pyrazin-2-yl)propan-1-one

Method: X-RAY DIFFRACTION

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

Isoform 2B of GTPase KRas

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	GUANOSINE-5'-DIPHOSPHATE × 1 ;1-[(2R,3R)-3-{[(7P)-7-(8-ethynyl-7-fluoronaphthalen-1-yl)-8-fluoro-2-{[(2R,4R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl]methoxy}pyrido[4,3-d]pyrimidin-4-yl](methyl)amino}-2-methylpyrrolidin-1-yl]-3-(pyrazin-2-yl)propan-1-one ; × 1 CALCIUM ION × 2 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	GUANOSINE-5'-DIPHOSPHATE × 1 ;1-[(2R,3R)-3-{[(7P)-7-(8-ethynyl-7-fluoronaphthalen-1-yl)-8-fluoro-2-{[(2R,4R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl]methoxy}pyrido[4,3-d]pyrimidin-4-yl](methyl)amino}-2-methylpyrrolidin-1-yl]-3-(pyrazin-2-yl)propan-1-one ; × 1 CALCIUM ION × 2 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RASK_HUMAN
Isoform	P01116-2
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–172； UniProt 1–169 Author chain B； PDBConstruct 4–172； UniProt 1–169

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	10jt
Deposition date deposition_date	2026-01-22
Structure title title	CRYSTAL STRUCTURE OF KIRSTEN RAT SARCOMA G12C COMPLEXED WITH GMPPNP AND COVALENTLY BOUND TO 1-[(2R,3R)-3-{[(7P)-7-(8-ethynyl-7-fluoronaphthalen-1-yl)-8-fluoro-2-{ [(2R,4R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl]methoxy}pyrido[4,3-d] pyrimidin-4-yl](methyl)amino}-2-methylpyrrolidin-1-yl]-3-(pyrazin-2-yl)propan-1-one
Keywords keywords	KRAS, GTPASE, INHIBITOR, HYDROLASE; HYDROLASE
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.

10jt__assembly_1__model_1

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

Download this curve (.dat)

10jt__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

10jt__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.57 Å
Rg (electron density)	15.19 Å
Total Rg	16.30 Å
Atom count	2817
Residues	169
Excluded volume	25166 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`10jt__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`10jt__assembly_2__model_1`	monomeric （1）	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 (5)

Entity 1 Entity 1 polymer

Description description	Isoform 2B of GTPase KRas
Molecular weight formula_weight	19480.9 kDa
EC 编号 ec_number	3.6.5.2
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	5874

GAGMTEYKLVVVGACGVGKSALTIQLIQNHFVDEYDPTIEDSYRKQVVIDGETSLLDILDTAGQEEYSAMRDQYMRTGEGFLLVFAINNTKSFEDIHHYREQIKRVKDSEDVPMVLVGNKSDLPSRTVDTKQAQDLARSYGIPFIETSAKTRQGVDDAFYTLVREIRKHKEK

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	GUANOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	443.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	;1-[(2R,3R)-3-{[(7P)-7-(8-ethynyl-7-fluoronaphthalen-1-yl)-8-fluoro-2-{[(2R,4R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl]methoxy}pyrido[4,3-d]pyrimidin-4-yl](methyl)amino}-2-methylpyrrolidin-1-yl]-3-(pyrazin-2-yl)propan-1-one ;
Molecular weight formula_weight	720.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	187

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Unit-cell length a length_a	33.361 Å
Unit-cell length b length_b	39.927 Å
Unit-cell length c length_c	62.053 Å
Unit-cell angle α angle_alpha	77.46 °
Unit-cell angle β angle_beta	81.68 °
Unit-cell angle γ angle_gamma	77.58 °
Molecules per unit cell Z z_pdb	2

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

Resolution resolution	1.489 Å
Low-resolution limit resolution_low	18.550 Å
R factor r_factor	0.2048
R_work r_work	0.2036
R_free r_free	0.2268

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

Isoform 2B of GTPase KRas

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

10jt__assembly_1__model_1

10jt__assembly_1__model_1 | I(q)

10jt__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)

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

Isoform 2B of GTPase KRas

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

10jt__assembly_1__model_1

10jt__assembly_1__model_1 | I(q)

10jt__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)