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6lhg

Crystal structure of chicken cCD8aa/pBF2*04:01

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

MHC class I alpha chain 2

Gallus gallus

UniProt O46790

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 5 Beta-2-microglobulin × 1 （P21611） IE8 peptide × 1 CD8 alpha chain × 2 （Q6QR64） water × 4 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 5 Beta-2-microglobulin × 1 （P21611） IE8 peptide × 1 CD8 alpha chain × 2 （Q6QR64） water × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
4e0r 4e0r 4g42 4g42 4g43 4g43 6lhg 6lhg

8 assemblies

View Construct and Data Evidence
UniProt name O46790_CHICK
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–270； UniProt 22–291 Author chain D； PDBConstruct 1–270； UniProt 22–291

Beta-2-microglobulin

Gallus gallus

UniProt P21611

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 5 MHC class I alpha chain 2 × 1 （O46790） IE8 peptide × 1 CD8 alpha chain × 2 （Q6QR64） water × 4 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 5 MHC class I alpha chain 2 × 1 （O46790） IE8 peptide × 1 CD8 alpha chain × 2 （Q6QR64） water × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
3o81 3o81

2 assemblies

Homodimer
3o81

1 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
2yez 3bev 3bew 3bew 3jvg 3jvg 3p73 3p77 4cvx 4cvx 4cvz 4cw1

53 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name B2MG_CHICK
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–97； UniProt 22–118 Author chain E； PDBConstruct 1–97； UniProt 22–118

CD8 alpha chain

Gallus gallus

UniProt Q6QR64

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 5 MHC class I alpha chain 2 × 1 （O46790） Beta-2-microglobulin × 1 （P21611） IE8 peptide × 1 water × 4 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 5 MHC class I alpha chain 2 × 1 （O46790） Beta-2-microglobulin × 1 （P21611） IE8 peptide × 1 water × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer
5eb9

1 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
6lhf 6lhf 6lhg 6lhg

4 assemblies

View Construct and Data Evidence
UniProt name Q6QR64_CHICK
Isoform —
PDB entities 4
Chains and sequence ranges Author chain G； PDBConstruct 1–117； UniProt 21–137 Author chain H； PDBConstruct 1–117； UniProt 21–137 Author chain I； PDBConstruct 1–117； UniProt 21–137 Author chain J； PDBConstruct 1–117； UniProt 21–137

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_id6lhg
Deposition date deposition_date2019-12-08
Structure title titleCrystal structure of chicken cCD8aa/pBF2*04:01
Keywords keywordschicken, complex, BF2*04:01, IMMUNE SYSTEM; IMMUNE SYSTEM
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.

6lhg__assembly_1__model_1

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

Download this curve (.dat)

6lhg__assembly_1__model_1 | I(q)

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

6lhg__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）26.93 Å
Rg (electron density)25.85 Å
Total Rg26.71 Å
Atom count4887
Residues601
Excluded volume85830 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 6lhg__assembly_1__model_1 pentameric （5） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 6lhg__assembly_2__model_1 pentameric （5） 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) 12 domains

SCOP 2.08 (12 domains)

Domain ID domain_idd6lhga1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.19 — MHC antigen-recognition domain
Superfamily Superfamily superfamilyd.19.1 — MHC antigen-recognition domain
Family Family familyd.19.1.0 — automated matches
Domain ID domain_idd6lhga2
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhga3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd6lhgb_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhgd1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.19 — MHC antigen-recognition domain
Superfamily Superfamily superfamilyd.19.1 — MHC antigen-recognition domain
Family Family familyd.19.1.0 — automated matches
Domain ID domain_idd6lhgd2
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhgd3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd6lhge_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhgg_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhgh_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhgi_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
Domain ID domain_idd6lhgj_
Class classb — All beta proteins
Fold Fold foldb.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamilyb.1.1 — Immunoglobulin
Family Family familyb.1.1.0 — automated matches
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7. Citations (1)