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2q1n

Actin Dimer Cross-linked Between Residues 41 and 374

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Actin, alpha skeletal muscle

OrganismNot specified

UniProt P68135

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 2 CALCIUM ION × 4 PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 2 LATRUNCULIN A × 2 water × 2 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 2 CALCIUM ION × 4 PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 2 LATRUNCULIN A × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1ijj 1ijj 1j6z 1nwk 1qz5 1s22 1wua 2asm 2aso 2asp 2fxu 2gwj

40 assemblies; showing the first 12

Homodimer
1lcu 1rdw 1rfq 1yxq 2a5x 2gwk 2hmp 2q1n 2q1n 2q31 2q31 2q36

14 assemblies; showing the first 12

Homotetramer
8dmx 8ru0 9fjo

3 assemblies

Other homooligomers
2y83 3b5u 3g37 3j8i 3j8j 3j8k 3mfp 4a7n 5mva 5mvy 5onv 5ooc

42 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
1eqy 1esv 1kxp 1lot 1m8q 1ma9 1mvw 1o18 1o19 1o1a 1o1b 1o1c

255 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name ACTS_RABIT
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–375； UniProt 3–377 Author chain B； PDBConstruct 1–375； UniProt 3–377

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_id2q1n
Deposition date deposition_date2007-05-25
Structure title titleActin Dimer Cross-linked Between Residues 41 and 374
Keywords keywordscross-linked dimer, STRUCTURAL PROTEIN; STRUCTURAL PROTEIN
Experimental Method methodX-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.

2q1n__assembly_1__model_1

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

Download this curve (.dat)

2q1n__assembly_1__model_1 | I(q)

10-2 10-1 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2q1n__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）34.81 Å
Rg (electron density)34.60 Å
Total Rg34.89 Å
Atom count5536
Residues690
Excluded volume98738 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2q1n__assembly_1__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 2q1n__assembly_2__model_1 dimeric （2） 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)

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd2q1na1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.1 — Actin-like ATPase domain
Family Family familyc.55.1.1 — Actin/HSP70
Domain ID domain_idd2q1na2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.1 — Actin-like ATPase domain
Family Family familyc.55.1.1 — Actin/HSP70
Domain ID domain_idd2q1nb1
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.1 — Actin-like ATPase domain
Family Family familyc.55.1.1 — Actin/HSP70
Domain ID domain_idd2q1nb2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamilyc.55.1 — Actin-like ATPase domain
Family Family familyc.55.1.1 — Actin/HSP70

CATH v4.4 (6 domains)

Domain ID domain_id2q1nA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily40 — ATPase, nucleotide binding domain
Domain ID domain_id2q1nA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily40 — ATPase, nucleotide binding domain
Domain ID domain_id2q1nA03
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology640 — Actin; Chain A, domain 4
Homologous superfamily homologous superfamily10 — ATPase, substrate binding domain, subdomain 4
Domain ID domain_id2q1nB01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily40 — ATPase, nucleotide binding domain
Domain ID domain_id2q1nB02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily40 — ATPase, nucleotide binding domain
Domain ID domain_id2q1nB03
Class class3 — Alpha Beta
Architecture architecture90 — Alpha-Beta Complex
Topology topology640 — Actin; Chain A, domain 4
Homologous superfamily homologous superfamily10 — ATPase, substrate binding domain, subdomain 4
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7. Citations (1)