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2z21

Crystal Structure of a five site mutated Cyanovirin-N

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

Cyanovirin-N

Nostoc ellipsosporum

UniProt P81180

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1n02 2ezm 2ezn 2rp3 3ezm 3s3y 3s3z

7 assemblies

Homodimer
1j4v 1l5b 1l5e 1lom 2z21 3czz 3ezm 3lhc 4j4c 4j4d 4j4d

11 assemblies

Homotetramer
4j4f 4j4g

2 assemblies

Other homooligomers
4j4e 4j4e

2 assemblies

Heteromeric or nucleic-acid complex
1iiy 2pys 2rdk 2rdk 3gxy 3gxz 6x7h

7 assemblies

View Construct and Data Evidence
UniProt name CVN_NOSEL
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–101； UniProt 1–101 Author chain B； PDBConstruct 1–101； UniProt 1–101

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_id2z21
Deposition date deposition_date2007-05-17
Structure title titleCrystal Structure of a five site mutated Cyanovirin-N
Keywords keywordsCyanovirin-N, Sugar binding protein, Anti-HIV, gp120; SUGAR BINDING 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.

2z21__assembly_1__model_1

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

Download this curve (.dat)

2z21__assembly_1__model_1 | I(q)

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

2z21__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）18.54 Å
Rg (electron density)17.43 Å
Total Rg18.32 Å
Atom count1537
Residues204
Excluded volume26889 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2z21__assembly_1__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 (2)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd2z21a1
Class classb — All beta proteins
Fold Fold foldb.89 — Cyanovirin-N
Superfamily Superfamily superfamilyb.89.1 — Cyanovirin-N
Family Family familyb.89.1.1 — Cyanovirin-N
Domain ID domain_idd2z21a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd2z21b1
Class classb — All beta proteins
Fold Fold foldb.89 — Cyanovirin-N
Superfamily Superfamily superfamilyb.89.1 — Cyanovirin-N
Family Family familyb.89.1.1 — Cyanovirin-N
Domain ID domain_idd2z21b2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id2z21A00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology60 — HIV-inactivating Protein, Cyanovirin-n
Homologous superfamily homologous superfamily10 — Cyanovirin-N
Domain ID domain_id2z21B00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology60 — HIV-inactivating Protein, Cyanovirin-n
Homologous superfamily homologous superfamily10 — Cyanovirin-N
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7. Citations (1)