SAXSdb — 3j3u

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

Adapter protein MecA 1

Bacillus subtilis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Negative regulator of genetic competence ClpC/MecB × 6 （P37571）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MECA1_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain 1； PDBConstruct 1–218； UniProt 1–218 Author chain 2； PDBConstruct 1–218； UniProt 1–218 Author chain 3； PDBConstruct 1–218； UniProt 1–218 Author chain 4； PDBConstruct 1–218； UniProt 1–218 Author chain 5； PDBConstruct 1–218； UniProt 1–218 Author chain 6； PDBConstruct 1–218； UniProt 1–218

Negative regulator of genetic competence ClpC/MecB

Bacillus subtilis

UniProt P37571

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Adapter protein MecA 1 × 6 （P37958）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CLPC_BACSU
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–810； UniProt 1–810 Author chain B； PDBConstruct 1–810； UniProt 1–810 Author chain C； PDBConstruct 1–810； UniProt 1–810 Author chain D； PDBConstruct 1–810； UniProt 1–810 Author chain E； PDBConstruct 1–810； UniProt 1–810 Author chain F； PDBConstruct 1–810； UniProt 1–810

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	3j3u
Deposition date deposition_date	2013-04-18
Structure title title	Structural dynamics of the MecA-ClpC complex revealed by cryo-EM
Keywords keywords	ClpC, MecA, AAA+ ATPase, PROTEIN unfolding, Chaperone; CHAPERONE
Experimental Method method	ELECTRON MICROSCOPY

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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.

3j3u__assembly_1__model_1

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

Download this curve (.dat)

3j3u__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3j3u__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	57.33 Å
Rg (electron density)	56.64 Å
Total Rg	56.77 Å
Atom count	41838
Residues	5352
Excluded volume	743060 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3j3u__assembly_1__model_1`	dodecameric （12）	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)

Entity 1 Entity 1 polymer

Description description	Adapter protein MecA 1
Molecular weight formula_weight	25791.6 kDa
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	1,2,3,4,5,6
Atom count atom_count	41838

MEIERINEHTVKFYMSYGDIEDRGFDREEIWYNRERSEELFWEVMDEVHEEEEFAVEGPLWIQVQALDKGLEIIVTKAQLSKDGQKLELPIPEDKKQEPASEDLDALLDDFQKEEQAVNQEEKEQKLQFVLRFGDFEDVISLSKLNVNGSKTTLYSFENRYYLYVDFCNMTDEEVENQLSILLEYATESSISIHRLEEYGKLIISEHALETIKKHFAS

Source Source

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	224308
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Negative regulator of genetic competence ClpC/MecB
Molecular weight formula_weight	90135.6 kDa
Mutation mutation	E280A, E618A
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F

MMFGRFTERAQKVLALAQEEALRLGHNNIGTEHILLGLVREGEGIAAKALQALGLGSEKIQKEVESLIGRGQEMSQTIHYTPRAKKVIELSMDEARKLGHSYVGTEHILLGLIREGEGVAARVLNNLGVSLNKARQQVLQLLGSNETGSSAAGTNSNANTPTLDSLARDLTAIAKEDSLDPVIGRSKEIQRVIEVLSRRTKNNPVLIGEPGVGKTAIAEGLAQQIINNEVPEILRDKRVMTLDMGTVVAGTKYRGEFEDRLKKVMDEIRQAGNIILFIDALHTLIGAGGAEGAIDASNILKPSLARGELQCIGATTLDEYRKYIEKDAALERRFQPIQVDQPSVDESIQILQGLRDRYEAHHRVSITDDAIEAAVKLSDRYISDRFLPDKAIDLIDEAGSKVRLRSFTTPPNLKELEQKLDEVRKEKDAAVQSQEFEKAASLRDTEQRLREQVEDTKKSWKEKQGQENSEVTVDDIAMVVSSWTGVPVSKIAQTETDKLLNMENILHSRVIGQDEAVVAVAKAVRRARAGLKDPKRPIGSFIFLGPTGVGKTELARALAESIFGDEESMIRIDMSEYMEKHSTSRLVGSPPGYVGYDEGGQLTEKVRRKPYSVVLLDAIEKAHPDVFNILLQVLEDGRLTDSKGRTVDFRNTILIMTSNVGASELKRNKYVGFNVQDETQNHKDMKDKVMGELKRAFRPEFINRIDEIIVFHSLEKKHLTEIVSLMSDQLTKRLKEQDLSIELTDAAKAKVAEEGVDLEYGARPLRRAIQKHVEDRLSEELLRGNIHKGQHIVLDVEDGEFVVKTTAKTN

Source Source

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	224308
Host organism host_organism	Escherichia coli

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	10.00 Å
Resolution测定Method resolution_method	Reference Projections
颗粒数 num_particles	36688

Structural dynamics of the MecA-ClpC complex revealed by cryo-EM

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

Adapter protein MecA 1

State in the Current Structure

Other States of the Same Protein in the Database

Negative regulator of genetic competence ClpC/MecB

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

3j3u__assembly_1__model_1

3j3u__assembly_1__model_1 | I(q)

3j3u__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

7. Citations (1)

Structural dynamics of the MecA-ClpC complex revealed by cryo-EM

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

Adapter protein MecA 1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Negative regulator of genetic competence ClpC/MecB

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

3j3u__assembly_1__model_1

3j3u__assembly_1__model_1 | I(q)

3j3u__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

7. Citations (1)