SAXSdb — 3sri

▼

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

Apical membrane antigen 1

Plasmodium falciparum

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Rhoptry neck protein 2 × 1 （Q8IKV6） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	AMA1_PLAFC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–348； UniProt 97–442

Rhoptry neck protein 2

OrganismNot specified

UniProt Q8IKV6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Apical membrane antigen 1 × 1 （P50489） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8IKV6_PLAF7
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–29； UniProt 2027–2055

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	3sri
Deposition date deposition_date	2011-07-07
Structure title title	Crystal structure of Plasmodium falciparum AMA1 in complex with a 29aa PfRON2 peptide
Keywords keywords	AMA1, Plasmodium falciparum, RON2, malaria, CELL INVASION; CELL INVASION
Experimental Method method	X-RAY DIFFRACTION

▼

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.

3sri__assembly_1__model_1

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

Download this curve (.dat)

3sri__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3sri__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.01 Å
Rg (electron density)	19.99 Å
Total Rg	20.90 Å
Atom count	2460
Residues	311
Excluded volume	43388 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3sri__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Apical membrane antigen 1
Molecular weight formula_weight	43664.9 kDa
Mutation mutation	N162K, T288V, S373D, N422D, S423K
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	2764

EFIEIVERSNYMGNPWTEYMAKYDIEEVHGSGIRVDLGEDAEVAGTQYRLPSGKCPVFGKGIIIENSKTTFLKPVATGNQDLKDGGFAFPPTEPLISPMTLNGMRDFYKNNEYVKNLDELTLCSRHAGNMNPDKDENSNYKYPAVYDDKDKKCHILYIAAQENNGPRYCNKDESKRNSMFCFRPAKDKSFQNYVYLSKNVVDNWEKVCPRKNLENAKFGLWVDGNCEDIPHVNEFSANDLFECNKLVFELSASDQPKQYEQHLTDYEKIKEGFKNKNADMIKSAFLPTGAFKADRYKSHGKGYNWGNYNRKTHKCEIFNVKPTCLINDKSYIATTALSHPIEVENNFPMVPRAAAAASFLEQKLISEEDLNSAVDHHHHHH

Source Source

Source organism organism	Plasmodium falciparum
NCBI taxonomy ID ncbi_taxonomy_id	5835
Host organism host_organism	Pichia pastoris

Entity 2 Entity 2 polymer

Description description	Rhoptry neck protein 2
Molecular weight formula_weight	3036.5 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

KDIGAGPVASCFTTRMSPPQQICLNSVVN

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	265

▼

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	3sriA01
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	4 — Hepatocyte Growth Factor
Homologous superfamily homologous superfamily	10 — Hepatocyte Growth Factor

▶

Unit-cell length a length_a	70.724 Å
Unit-cell length b length_b	38.137 Å
Unit-cell length c length_c	72.078 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	97.72 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

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

Resolution resolution	1.600 Å
Low-resolution limit resolution_low	35.040 Å
R factor r_factor	0.1772
R_work r_work	0.1763
R_free r_free	0.1948

Crystal structure of Plasmodium falciparum AMA1 in complex with a 29aa PfRON2 peptide

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

Apical membrane antigen 1

State in the Current Structure

Other States of the Same Protein in the Database

Rhoptry neck protein 2

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

3sri__assembly_1__model_1

3sri__assembly_1__model_1 | I(q)

3sri__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 polymer

Polymer Polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

Crystal structure of Plasmodium falciparum AMA1 in complex with a 29aa PfRON2 peptide

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

Apical membrane antigen 1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Rhoptry neck protein 2

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

3sri__assembly_1__model_1

3sri__assembly_1__model_1 | I(q)

3sri__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 polymer

Polymer Polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)