SAXSdb — 4fpw

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

CalU16

Micromonospora echinospora

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8KNE9_MICEC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–181； UniProt 2–182 Author chain B； PDBConstruct 1–181； UniProt 2–182

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_id	4fpw
Deposition date deposition_date	2012-06-22
Structure title title	Crystal Structure of CalU16 from Micromonospora echinospora. Northeast Structural Genomics Consortium Target MiR12.
Keywords keywords	Structural Genomics, PSI-Biology, Northeast Structural Genomics Consortium, NESG, CalU16, Unknown Function; Structural Genomics, Unknown Function
Experimental Method method	X-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.

4fpw__assembly_1__model_1

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

Download this curve (.dat)

4fpw__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4fpw__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	16.77 Å
Rg (electron density)	15.20 Å
Total Rg	16.38 Å
Atom count	1235
Residues	152
Excluded volume	21765 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4fpw__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4fpw__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`4fpw__assembly_3__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) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	4fpwA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	530 — Alpha-D-Glucose-1,6-Bisphosphate; Chain A, domain 4
Homologous superfamily homologous superfamily	20 — START domain

Domain ID domain_id	4fpwB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	530 — Alpha-D-Glucose-1,6-Bisphosphate; Chain A, domain 4
Homologous superfamily homologous superfamily	20 — START domain

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Unit-cell length a length_a	51.852 Å
Unit-cell length b length_b	51.852 Å
Unit-cell length c length_c	305.705 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 61
Space-group number int_tables_number	169
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	44.910 Å
R factor r_factor	0.2426
R_work r_work	0.2406
R_free r_free	0.2816

Description description	CalU16
Molecular weight formula_weight	20235.7 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2625

Crystal Structure of CalU16 from Micromonospora echinospora. Northeast Structural Genomics Consortium Target MiR12.

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

CalU16

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

4fpw__assembly_1__model_1

4fpw__assembly_1__model_1 | I(q)

4fpw__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Micromonospora echinospora
NCBI taxonomy ID ncbi_taxonomy_id	1877
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	128

Crystal Structure of CalU16 from Micromonospora echinospora. Northeast Structural Genomics Consortium Target MiR12.

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

CalU16

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

4fpw__assembly_1__model_1

4fpw__assembly_1__model_1 | I(q)

4fpw__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)