SAXSdb — 1fce

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

CELLULASE CELF

Clostridium cellulolyticum

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Monomer	Protein 1 其他Polymer 2	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-4-thio-beta-D-glucopyranose-(1-4)-methyl beta-D-glucopyranoside × 2 CALCIUM ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GUNF_CLOCE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–629； UniProt 30–658

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	1fce
Deposition date deposition_date	1998-07-06
Structure title title	PROCESSIVE ENDOCELLULASE CELF OF CLOSTRIDIUM CELLULOLYTICUM
Keywords keywords	CELLULASE DEGRADATION, FAMILY 48, THIOOLIGOSACCHARIDE INHIBITOR, PROCESSIVE ENDO ACTION, HYDROLASE; CELLULASE DEGRADATION
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.

1fce__assembly_1__model_1

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

Download this curve (.dat)

1fce__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1fce__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.39 Å
Rg (electron density)	23.16 Å
Total Rg	24.08 Å
Atom count	6312
Residues	629
Excluded volume	89588 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1fce__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 (4)

Entity 1 Entity 1 polymer

Description description	CELLULASE CELF
Molecular weight formula_weight	70869.9 kDa
EC 编号 ec_number	3.2.1.4
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	7314

ASSPANKVYQDRFESMYSKIKDPANGYFSEQGIPYHSIETLMVEAPDYGHVTTSEAMSYYMWLEAMHGRFSGDFTGFDKSWSVTEQYLIPTEKDQPNTSMSRYDANKPATYAPEFQDPSKYPSPLDTSQPVGRDPINSQLTSAYGTSMLYGMHWILDVDNWYGFGARADGTSKPSYINTFQRGEQESTWETIPQPCWDEHKFGGQYGFLDLFTKDTGTPAKQFKYTNAPDADARAVQATYWADQWAKEQGKSVSTSVGKATKMGDYLRYSFFDKYFRKIGQPSQAGTGYDAAHYLLSWYYAWGGGIDSTWSWIIGSSHNHFGYQNPFAAWVLSTDANFKPKSSNGASDWAKSLDRQLEFYQWLQSAEGAIAGGATNSWNGRYEAVPSGTSTFYGMGYVENPVYADPGSNTWFGMQVWSMQRVAELYYKTGDARAKKLLDKWAKWINGEIKFNADGTFQIPSTIDWEGQPDTWNPTQGYTGNANLHVKVVNYGTDLGCASSLANTLTYYAAKSGDETSRQNAQKLLDAMWNNYSDSKGISTVEQRGDYHRFLDQEVFVPAGWTGKMPNGDVIKSGVKFIDIRSKYKQDPEWQTMVAALQAGQVPTQRLHRFWAQSEFAVANGVYAILFPD

Source Source

Source organism organism	Clostridium cellulolyticum
NCBI taxonomy ID ncbi_taxonomy_id	1521
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 branched

Description description	beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-4-thio-beta-D-glucopyranose-(1-4)-methyl beta-D-glucopyranoside
Molecular weight formula_weight	696.7 kDa
Source method src_method	man
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	334

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1fcea_
Class class	a — All alpha proteins
Fold Fold fold	a.102 — alpha/alpha toroid
Superfamily Superfamily superfamily	a.102.1 — Six-hairpin glycosidases
Family Family family	a.102.1.2 — Cellulases catalytic domain

CATH v4.4 (3 domains)

Domain ID domain_id	1fceA01
Class class	1 — Mainly Alpha
Architecture architecture	50 — Alpha/alpha barrel
Topology topology	10 — Glycosyltransferase
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1fceA02
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	160 — Endo-1,4-beta-glucanase f; domain 2
Homologous superfamily homologous superfamily	10 — Endo-1,4-beta-glucanase f. Domain 2

Domain ID domain_id	1fceA03
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	870 — Endo-1,4-beta-glucanase f; domain 3
Homologous superfamily homologous superfamily	10 — Endo-1,4-beta-glucanase f. Domain 3

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Unit-cell length a length_a	61.450 Å
Unit-cell length b length_b	84.540 Å
Unit-cell length c length_c	121.940 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	0.1650
R_work r_work	0.1650
R_free r_free	0.2100

PROCESSIVE ENDOCELLULASE CELF OF CLOSTRIDIUM CELLULOLYTICUM

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

CELLULASE CELF

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

1fce__assembly_1__model_1

1fce__assembly_1__model_1 | I(q)

1fce__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

CATH v4.4 (3 domains)

7. Citations (1)

PROCESSIVE ENDOCELLULASE CELF OF CLOSTRIDIUM CELLULOLYTICUM

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

CELLULASE CELF

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

1fce__assembly_1__model_1

1fce__assembly_1__model_1 | I(q)

1fce__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (1 domains)

CATH v4.4 (3 domains)

7. Citations (1)