1i4k

CRYSTAL STRUCTURE OF AN SM-LIKE PROTEIN (AF-SM1) FROM ARCHAEOGLOBUS FULGIDUS AT 2.5A RESOLUTION

Method: X-RAY DIFFRACTION

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

PUTATIVE SNRNP SM-LIKE PROTEIN

Archaeoglobus fulgidus

UniProt O29386

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 7 CITRIC ACID × 1 water × 7 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 7 CITRIC ACID × 1 water × 7 Consistent with protein count
3 Protein homooligomer Homooligomer Protein 7 water × 7 Consistent with protein count
4 Protein homooligomer Homooligomer Protein 7 water × 6 Consistent with protein count
5 Protein homooligomer Homooligomer Protein 14 CITRIC ACID × 1 water × 13 Consistent with protein count
6 Protein homooligomer Homooligomer Protein 14 CITRIC ACID × 1 water × 14 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name RUXX_ARCFU
Isoform
PDB entities 1
Chains and sequence ranges Author chain 1; PDBConstruct 1–77; UniProt 1–77 Author chain 2; PDBConstruct 1–77; UniProt 1–77 Author chain A; PDBConstruct 1–77; UniProt 1–77 Author chain B; PDBConstruct 1–77; UniProt 1–77 Author chain C; PDBConstruct 1–77; UniProt 1–77 Author chain D; PDBConstruct 1–77; UniProt 1–77 Author chain E; PDBConstruct 1–77; UniProt 1–77 Author chain F; PDBConstruct 1–77; UniProt 1–77 Author chain G; PDBConstruct 1–77; UniProt 1–77 Author chain H; PDBConstruct 1–77; UniProt 1–77 Author chain I; PDBConstruct 1–77; UniProt 1–77 Author chain J; PDBConstruct 1–77; UniProt 1–77 Author chain K; PDBConstruct 1–77; UniProt 1–77 Author chain L; PDBConstruct 1–77; UniProt 1–77 Author chain M; PDBConstruct 1–77; UniProt 1–77 Author chain N; PDBConstruct 1–77; UniProt 1–77 Author chain O; PDBConstruct 1–77; UniProt 1–77 Author chain P; PDBConstruct 1–77; UniProt 1–77 Author chain Q; PDBConstruct 1–77; UniProt 1–77 Author chain R; PDBConstruct 1–77; UniProt 1–77 Author chain S; PDBConstruct 1–77; UniProt 1–77 Author chain T; PDBConstruct 1–77; UniProt 1–77 Author chain U; PDBConstruct 1–77; UniProt 1–77 Author chain V; PDBConstruct 1–77; UniProt 1–77 Author chain W; PDBConstruct 1–77; UniProt 1–77 Author chain X; PDBConstruct 1–77; UniProt 1–77 Author chain Y; PDBConstruct 1–77; UniProt 1–77 Author chain Z; PDBConstruct 1–77; UniProt 1–77

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_id1i4k
Deposition date deposition_date2001-02-22
Structure title titleCRYSTAL STRUCTURE OF AN SM-LIKE PROTEIN (AF-SM1) FROM ARCHAEOGLOBUS FULGIDUS AT 2.5A RESOLUTION
Keywords keywordsSNRNP, SM, CORE SNRNP DOMAIN, RNA BINDING PROTEIN; RNA BINDING PROTEIN
Experimental Method methodX-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.

1i4k__assembly_6__model_1

Assembly 6 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1i4k__assembly_6__model_1 | I(q)

10-2 10-1 105 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1i4k__assembly_6__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)38.17 Å
Rg (electron density)38.06 Å
Total Rg38.36 Å
Atom count7741
Residues1000
Excluded volume139140 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1i4k__assembly_1__model_1 heptameric (7) Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1i4k__assembly_2__model_1 heptameric (7) Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 1i4k__assembly_3__model_1 heptameric (7) Success 4.1.3-1-20251215 (887e7ef) View Download
4 1 1i4k__assembly_4__model_1 heptameric (7) Success 4.1.3-1-20251215 (887e7ef) View Download
5 1 1i4k__assembly_5__model_1 tetradecameric (14) Success 4.1.3-1-20251215 (887e7ef) View Download
6 1 1i4k__assembly_6__model_1 tetradecameric (14) Success 4.1.3-1-20251215 (887e7ef) View Download

4. Crystallography and Experiment 4. Crystallography & Experiment

5. Entities and Polymers Entities & Polymers (3)

6. Fold Classification (SCOP + CATH) 56 domains

SCOP 2.08 (28 domains)

Domain ID domain_idd1i4k1_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4k2_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ka_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kb_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kc_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kd_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ke_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kf_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kg_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kh_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ki_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kj_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kk_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kl_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4km_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kn_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ko_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kp_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kq_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kr_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ks_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kt_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ku_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kv_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kw_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kx_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4ky_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP
Domain ID domain_idd1i4kz_
Class classb — All beta proteins
Fold Fold foldb.38 — Sm-like fold
Superfamily Superfamily superfamilyb.38.1 — Sm-like ribonucleoproteins
Family Family familyb.38.1.1 — Sm motif of small nuclear ribonucleoproteins, SNRNP

CATH v4.4 (28 domains)

Domain ID domain_id1i4k100
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4k200
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kA00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kB00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kC00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kD00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kE00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kF00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kG00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kH00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kI00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kJ00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kK00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kL00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kM00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kN00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kO00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kP00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kQ00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kR00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kS00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kT00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kU00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kV00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kW00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kX00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kY00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100
Domain ID domain_id1i4kZ00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology30 — SH3 type barrels.
Homologous superfamily homologous superfamily100

7. Citations (1)