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2at9

STRUCTURE OF BACTERIORHODOPSIN AT 3.0 ANGSTROM BY ELECTRON CRYSTALLOGRAPHY

Method: ELECTRON CRYSTALLOGRAPHY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

BACTERIORHODOPSIN

OrganismNot specified

UniProt P02945

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 3 RETINAL × 3 3-[[3-METHYLPHOSPHONO-GLYCEROLYL]PHOSPHONYL]-[1,2-DI[2,6,10,14-TETRAMETHYL-HEXADECAN-16-YL]GLYCEROL × 24 water × 3 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1bct 1bha 1bhb 1jv6 1jv7 1kme 1kme 1l0m 1mgy 1pxr 1pxr 1pxs

79 assemblies; showing the first 12

Homodimer
3utv 3utw 3utx 3uty 4hwl 7vso

6 assemblies

Homotetramer

None

Other homooligomers
1ap9 1at9 1bm1 1brd 1brx 1c3w 1c8r 1c8s 1cwq 1e0p 1f4z 1f50

104 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
1brr 1dze 1iw6 1iw9 1ixf 1qm8 1ucq 1x0k 1x0s 2zfe 2zzl 3vhz

13 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name BACR_HALN1
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 2–248； UniProt 14–253

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_id2at9
Deposition date deposition_date1998-12-17
Structure title titleSTRUCTURE OF BACTERIORHODOPSIN AT 3.0 ANGSTROM BY ELECTRON CRYSTALLOGRAPHY
Keywords keywordsPROTON PUMP, MEMBRANE PROTEIN, RETINAL PROTEIN, TWO-DIMENSIONAL CRYSTAL, PHOTORECEPTOR; PHOTORECEPTOR
Experimental Method methodELECTRON CRYSTALLOGRAPHY
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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.

2at9__assembly_1__model_1

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

Download this curve (.dat)

2at9__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.

2at9__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）29.04 Å
Rg (electron density)27.73 Å
Total Rg29.87 Å
Atom count6663
Residues666
Excluded volume129900 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2at9__assembly_1__model_1 trimeric （3） 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 (4)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd2at9a_
Class classf — Membrane and cell surface proteins and peptides
Fold Fold foldf.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamilyf.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family familyf.13.1.1 — Bacteriorhodopsin-like

CATH v4.4 (1 domains)

Domain ID domain_id2at9A00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily10 — Rhodopsin 7-helix transmembrane proteins
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7. Citations (5)