8cbm

Structure of human mitochondrial CCA-adding enzyme in complex with mitochondrial pre-tRNA-Ile

Method: ELECTRON MICROSCOPY

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

3-hydroxyacyl-CoA dehydrogenase type-2

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 6 RNA 1	CCA tRNA nucleotidyltransferase 1, mitochondrial × 1 （Q96Q11） tRNA methyltransferase 10 homolog C × 1 （Q7L0Y3） Mitochondrial Precursor tRNA-Ile(0,0) × 1 NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 4 CYTIDINE-5'-DIPHOSPHATE × 1 S-ADENOSYL-L-HOMOCYSTEINE × 1 water × 5	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HCD2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–261； UniProt 1–261 Author chain B； PDBConstruct 1–261； UniProt 1–261 Author chain C； PDBConstruct 1–261； UniProt 1–261 Author chain D； PDBConstruct 1–261； UniProt 1–261

CCA tRNA nucleotidyltransferase 1, mitochondrial

Homo sapiens

UniProt Q96Q11

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 6 RNA 1	3-hydroxyacyl-CoA dehydrogenase type-2 × 4 （Q99714） tRNA methyltransferase 10 homolog C × 1 （Q7L0Y3） Mitochondrial Precursor tRNA-Ile(0,0) × 1 NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 4 CYTIDINE-5'-DIPHOSPHATE × 1 S-ADENOSYL-L-HOMOCYSTEINE × 1 water × 5	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRNT1_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain E； PDBConstruct 1–393； UniProt 42–434

tRNA methyltransferase 10 homolog C

Homo sapiens

UniProt Q7L0Y3

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 6 RNA 1	3-hydroxyacyl-CoA dehydrogenase type-2 × 4 （Q99714） CCA tRNA nucleotidyltransferase 1, mitochondrial × 1 （Q96Q11） Mitochondrial Precursor tRNA-Ile(0,0) × 1 NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 4 CYTIDINE-5'-DIPHOSPHATE × 1 S-ADENOSYL-L-HOMOCYSTEINE × 1 water × 5	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TM10C_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain F； PDBConstruct 23–386； UniProt 40–403

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	8cbm
Deposition date deposition_date	2023-01-25
Structure title title	Structure of human mitochondrial CCA-adding enzyme in complex with mitochondrial pre-tRNA-Ile
Keywords keywords	;RNA maturation, RNA modification, mitochondrial tRNA, RNA methyltransferase, MRPP1, MRPP2, MRPP3, RNA binding protein, m6A, RNA binding, RNA recognition ;; RNA BINDING PROTEIN
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.

8cbm__assembly_1__model_1

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

Download this curve (.dat)

8cbm__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8cbm__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	46.52 Å
Rg (electron density)	47.67 Å
Total Rg	47.52 Å
Atom count	14571
Residues	1765
Excluded volume	255110 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8cbm__assembly_1__model_1`	heptameric （7）	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 (8)

Entity 1 Entity 1 polymer

Description description	3-hydroxyacyl-CoA dehydrogenase type-2
Molecular weight formula_weight	26947.0 kDa
EC 编号 ec_number	1.1.1.35,1.1.1.62,1.1.1.239,1.1.1.178,1.1.1.53,1.1.1.159
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	14579

MAAACRSVKGLVAVITGGASGLGLATAERLVGQGASAVLLDLPNSGGEAQAKKLGNNCVFAPADVTSEKDVQTALALAKGKFGRVDVAVNCAGIAVASKTYNLKKGQTHTLEDFQRVLDVNLMGTFNVIRLVAGEMGQNEPDQGGQRGVIINTASVAAFEGQVGQAAYSASKGGIVGMTLPIARDLAPIGIRVMTIAPGLFGTPLLTSLPEKVCNFLASQVPFPSRLGDPAEYAHLVQAIIENPFLNGEVIRLDGAIRMQP

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	CCA tRNA nucleotidyltransferase 1, mitochondrial
Molecular weight formula_weight	44989.3 kDa
EC 编号 ec_number	2.7.7.72
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

TEGLKSLTELFVKENHELRIAGGAVRDLLNGVKPQDIDFATTATPTQMKEMFQSAGIRMINNRGEKHGTITARLHEENFEITTLRIDVTTDGRHAEVEFTTDWQKDAERRDLTINSMFLGFDGTLFDYFNGYEDLKNKKVRFVGHAKQRIQEDYLRILRYFRFYGRIVDKPGDHDPETLEAIAENAKGLAGISGERIWVELKKILVGNHVNHLIHLIYDLDVAPYIGLPANASLEEFDKVSKNVDGFSPKPVTLLASLFKVQDDVTKLDLRLKIAKEEKNLGLFIVKNRKDLIKATDSSDPLKPYQDFIIDSREPDATTRVCELLKYQGEHCLLKEMQQWSIPPFPVSGHDIRKVGISSGKEIGALLQQLREQWKKSGYQMEKDELLSYIKKT

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	tRNA methyltransferase 10 homolog C
Molecular weight formula_weight	48007.8 kDa
EC 编号 ec_number	2.1.1.-,2.1.1.218,2.1.1.221
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

MHHHHHHSSGVDLGTENLYFQSMSSKIPAVTYPKNESTPPSEELELDKWKTTMKSSVQEECVSTISSSKDEDPLAATREFIEMWRLLGREVPEHITEEELKTLMECVSNTAKKKYLKYLYTKEKVKKARQIKKEMKAAAREEAKNIKLLETTEEDKQKNFLFLRLWDRNMDIAMGWKGAQAMQFGQPLVFDMAYENYMKRKELQNTVSQLLESEGWNRRNVDPFHIYFCNLKIDGALHRELVKRYQEKWDKLLLTSTEKSHVDLFPKDSIIYLTADSPNVMTTFRHDKVYVIGSFVDKSMQPGTSLAKAKRLNLATECLPLDKYLQWEIGNKNLTLDQMIRILLCLKNNGNWQEALQFVPKRKHTGFLEISQHSQEFINRLKKAKTAENLYFQSHHHHHHDYKDDDDK

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 polymer

Description description	Mitochondrial Precursor tRNA-Ile(0,0)
Molecular weight formula_weight	22138.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	T

GGAAAUAUGUCUGAUAAAAGAGUUACUUUGAUAGAGUAAAUAAUAGGAGCUUAAACCCCCUUAUUUCCA

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	in vitro transcription vector pT7-TP(deltai)

Entity 5 Entity 5 non-polymer

Description description	NICOTINAMIDE-ADENINE-DINUCLEOTIDE
Molecular weight formula_weight	663.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 non-polymer

Description description	CYTIDINE-5'-DIPHOSPHATE
Molecular weight formula_weight	403.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	S-ADENOSYL-L-HOMOCYSTEINE
Molecular weight formula_weight	384.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	8

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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	—

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

Resolution resolution	3.14 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	25554

Structure of human mitochondrial CCA-adding enzyme in complex with mitochondrial pre-tRNA-Ile

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

3-hydroxyacyl-CoA dehydrogenase type-2

State in the Current Structure

Other States of the Same Protein in the Database

CCA tRNA nucleotidyltransferase 1, mitochondrial

State in the Current Structure

Other States of the Same Protein in the Database

tRNA methyltransferase 10 homolog C

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

8cbm__assembly_1__model_1

8cbm__assembly_1__model_1 | I(q)

8cbm__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

7. Citations (1)

Structure of human mitochondrial CCA-adding enzyme in complex with mitochondrial pre-tRNA-Ile

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

3-hydroxyacyl-CoA dehydrogenase type-2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CCA tRNA nucleotidyltransferase 1, mitochondrial

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

tRNA methyltransferase 10 homolog C

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

8cbm__assembly_1__model_1

8cbm__assembly_1__model_1 | I(q)

8cbm__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

7. Citations (1)