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4mx5

Structure of ricin A chain bound with benzyl-(2-(2-amino-4-oxo-3,4-dihydropteridine-7-carboxamido)ethyl)carbamate

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

Ricin A chain

Ricinus communis

UniProt P02879

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 benzyl (2-{[(2-amino-4-oxo-3,4-dihydropteridin-7-yl)carbonyl]amino}ethyl)carbamate × 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1br5 1br6 1il3 1il4 1il5 1il5 1il9 1rtc 2p8n 2pjo 2r2x 2r3d

55 assemblies; showing the first 12

Homodimer
1ifs 1ift 1ifu 1obs 1obt 1uq4 1uq5 2vc3 2vc4 4huo 4hup 4hv7

12 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1j1m 2aai 3rti 3rtj 4kuc 4kuc 4lgp 4lgp 4lgr 4lgs 4lhj 4lhq

60 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name RICI_RICCO
Isoform —
PDB entities 1
Chains and sequence ranges Author chain X； PDBConstruct 2–268； UniProt 36–302

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_id4mx5
Deposition date deposition_date2013-09-25
Structure title titleStructure of ricin A chain bound with benzyl-(2-(2-amino-4-oxo-3,4-dihydropteridine-7-carboxamido)ethyl)carbamate
Keywords keywordsTOXIN, HYDROLASE, RIBOSOME-INACTIVATING PROTEIN, N-glycosidase, PTERIN, HYDROLASE-HYDROLASE INHIBITOR complex; HYDROLASE/HYDROLASE INHIBITOR
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.

4mx5__assembly_1__model_1

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

Download this curve (.dat)

4mx5__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.

4mx5__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）19.61 Å
Rg (electron density)18.37 Å
Total Rg19.29 Å
Atom count2099
Residues263
Excluded volume37037 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 4mx5__assembly_1__model_1 monomeric （1） 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 (3)

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd4mx5x_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.165 — Ribosome inactivating proteins (RIP)
Superfamily Superfamily superfamilyd.165.1 — Ribosome inactivating proteins (RIP)
Family Family familyd.165.1.1 — Plant cytotoxins

CATH v4.4 (2 domains)

Domain ID domain_id4mx5X01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology420 — Ricin (A subunit); domain 1
Homologous superfamily homologous superfamily10 — Ricin (A subunit), domain 1
Domain ID domain_id4mx5X02
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology470 — Ricin (A Subunit), domain 2
Homologous superfamily homologous superfamily10 — Ricin (A Subunit), domain 2
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7. Citations (1)