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Entry version 145 (18 Sep 2019)
Sequence version 2 (15 Jul 1998)
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Protein

Transcription factor IIIA

Gene

gtf3a

Organism
Xenopus laevis (African clawed frog)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Involved in ribosomal large subunit biogenesis (By similarity). Acts as both a positive transcription factor for 5S RNA genes and a specific RNA binding protein that complexes with 5S RNA in oocytes to form the 7S ribonucleoprotein storage particle. May play an essential role in the developmental change in 5S RNA gene expression. Interacts with the internal control region (ICR) of approximately 50 bases within the 5S RNA genes, is required for correct transcription of these genes by RNA polymerase III (PubMed:2253880, PubMed:1538401, PubMed:1762917). Also binds the transcribed 5S RNA's (By similarity).By similarity3 Publications

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section specifies the position(s) and type(s) of zinc fingers within the protein.<p><a href='/help/zn_fing' target='_top'>More...</a></p>Zinc fingeri35 – 59C2H2-type 1PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri65 – 89C2H2-type 2PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri95 – 120C2H2-type 3PROSITE-ProRule annotationAdd BLAST26
Zinc fingeri127 – 151C2H2-type 4PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri157 – 181C2H2-type 5PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri184 – 210C2H2-type 6PROSITE-ProRule annotationAdd BLAST27
Zinc fingeri214 – 236C2H2-type 7PROSITE-ProRule annotationAdd BLAST23
Zinc fingeri243 – 268C2H2-type 8PROSITE-ProRule annotationAdd BLAST26
Zinc fingeri274 – 298C2H2-type 9PROSITE-ProRule annotationAdd BLAST25

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDNA-binding, RNA-binding
Biological processRibosome biogenesis, Transcription, Transcription regulation
LigandMetal-binding, Zinc

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Transcription factor IIIA
Short name:
TFIIIA
Alternative name(s):
S-TFIIIA/O-TFIIIA
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:gtf3a
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiXenopus laevis (African clawed frog)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri8355 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraPipoideaPipidaeXenopodinaeXenopusXenopus

Organism-specific databases

Xenopus laevis and tropicalis biology and genomics resource

More...
Xenbasei
XB-GENE-6252591 gtf3a

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Nucleus

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi38S → E or A: Abolishes phosphorylation by CK2. 1 Publication1
Mutagenesisi42C → S: Loss of DNA binding. 1 Publication1
Mutagenesisi55H → L: Inhibition of specific DNA binding. 1 Publication1
Mutagenesisi91G → S: Loss of DNA binding. 1 Publication1
Mutagenesisi93K → E: Loss of DNA binding. 1 Publication1
Mutagenesisi134C → S: No effect. 1 Publication1
Mutagenesisi186C → S: No effect. 1 Publication1
Mutagenesisi336S → E or A: Slightly decreases phosphorylation by CK2. 1 Publication1
Mutagenesisi350S → E or A: No effect on phosphorylation by CK2. 1 Publication1

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000416321 – 366Transcription factor IIIAAdd BLAST366

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei38Phosphoserine; by CK21 Publication1
Modified residuei336Phosphoserine; by CK2; in vitro1 Publication1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

The N-terminus is blocked.

Keywords - PTMi

Phosphoprotein

Proteomic databases

MaxQB - The MaxQuant DataBase

More...
MaxQBi
P03001

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P03001

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Synthesized in oocytes and, in much lower levels, in somatic cells.

<p>This subsection of the ‘Expression’ section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

The levels follow the transcriptional activity of oocyte type 5S RNA genes during embryogenesis, present in very high levels in maturing oocytes when oocyte type 5S genes are being expressed, and in much lower levels in somatic cells where the oocyte type genes are not expressed.

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1366
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P03001

Database of comparative protein structure models

More...
ModBasei
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P03001

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri35 – 59C2H2-type 1PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri65 – 89C2H2-type 2PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri95 – 120C2H2-type 3PROSITE-ProRule annotationAdd BLAST26
Zinc fingeri127 – 151C2H2-type 4PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri157 – 181C2H2-type 5PROSITE-ProRule annotationAdd BLAST25
Zinc fingeri184 – 210C2H2-type 6PROSITE-ProRule annotationAdd BLAST27
Zinc fingeri214 – 236C2H2-type 7PROSITE-ProRule annotationAdd BLAST23
Zinc fingeri243 – 268C2H2-type 8PROSITE-ProRule annotationAdd BLAST26
Zinc fingeri274 – 298C2H2-type 9PROSITE-ProRule annotationAdd BLAST25

Keywords - Domaini

Repeat, Zinc-finger

Phylogenomic databases

KEGG Orthology (KO)

More...
KOi
K09191

Database of Orthologous Groups

More...
OrthoDBi
1318335at2759

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR036236 Znf_C2H2_sf
IPR013087 Znf_C2H2_type

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00096 zf-C2H2, 6 hits

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00355 ZnF_C2H2, 9 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF57667 SSF57667, 6 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00028 ZINC_FINGER_C2H2_1, 8 hits
PS50157 ZINC_FINGER_C2H2_2, 7 hits

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequences (2)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

This entry describes 2 <p>This subsection of the ‘Sequence’ section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by alternative initiation. AlignAdd to basket
Isoform Somatic (identifier: P03001-1) [UniParc]FASTAAdd to basket
Also known as: S-TFIIIA

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MAAKVASTSS EEAEGSLVTE GEMGEKALPV VYKRYICSFA DCGAAYNKNW
60 70 80 90 100
KLQAHLCKHT GEKPFPCKEE GCEKGFTSLH HLTRHSLTHT GEKNFTCDSD
110 120 130 140 150
GCDLRFTTKA NMKKHFNRFH NIKICVYVCH FENCGKAFKK HNQLKVHQFS
160 170 180 190 200
HTQQLPYECP HEGCDKRFSL PSRLKRHEKV HAGYPCKKDD SCSFVGKTWT
210 220 230 240 250
LYLKHVAECH QDLAVCDVCN RKFRHKDYLR DHQKTHEKER TVYLCPRDGC
260 270 280 290 300
DRSYTTAFNL RSHIQSFHEE QRPFVCEHAG CGKCFAMKKS LERHSVVHDP
310 320 330 340 350
EKRKLKEKCP RPKRSLASRL TGYIPPKSKE KNASVSGTEK TDSLVKNKPS
360
GTETNGSLVL DKLTIQ
Length:366
Mass (Da):41,911
Last modified:July 15, 1998 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i29237E710292FA24
GO
Isoform Oocyte (identifier: P03001-2) [UniParc]FASTAAdd to basket
Also known as: O-TFIIIA

The sequence of this isoform differs from the canonical sequence as follows:
     1-22: Missing.

Show »
Length:344
Mass (Da):39,746
Checksum:i8ACFE717EA8A1322
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti4K → T in CAA33786 (PubMed:2744458).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural varianti96T → K. 1
Natural varianti319R → C. 1
Natural varianti335V → I. 1
Natural varianti356G → D. 1
Natural varianti365I → L. 1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting.<p><a href='/help/var_seq' target='_top'>More...</a></p>Alternative sequenceiVSP_0189621 – 22Missing in isoform Oocyte. CuratedAdd BLAST22

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
K02938 mRNA Translation: AAA49967.1
X03681
, X03735, X03736, X03737, X03738, X03739 Genomic DNA Translation: CAB51745.1
X15785 Genomic DNA Translation: CAA33786.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A35916
A90857 TWXL3

NCBI Reference Sequences

More...
RefSeqi
NP_001081328.1, NM_001087859.1 [P03001-2]

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
397777

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
xla:397777

Keywords - Coding sequence diversityi

Alternative initiation, Polymorphism

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
K02938 mRNA Translation: AAA49967.1
X03681
, X03735, X03736, X03737, X03738, X03739 Genomic DNA Translation: CAB51745.1
X15785 Genomic DNA Translation: CAA33786.1
PIRiA35916
A90857 TWXL3
RefSeqiNP_001081328.1, NM_001087859.1 [P03001-2]

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

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RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1TF3NMR-A32-123[»]
1TF6X-ray3.10A/D23-212[»]
1UN6X-ray3.10B/C/D127-212[»]
2HGHNMR-A127-212[»]
2J7JX-ray1.65A127-210[»]
SMRiP03001
ModBaseiSearch...

PTM databases

iPTMnetiP03001

Proteomic databases

MaxQBiP03001

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi397777
KEGGixla:397777

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
397777
XenbaseiXB-GENE-6252591 gtf3a

Phylogenomic databases

KOiK09191
OrthoDBi1318335at2759

Miscellaneous databases

EvolutionaryTraceiP03001

Family and domain databases

InterProiView protein in InterPro
IPR036236 Znf_C2H2_sf
IPR013087 Znf_C2H2_type
PfamiView protein in Pfam
PF00096 zf-C2H2, 6 hits
SMARTiView protein in SMART
SM00355 ZnF_C2H2, 9 hits
SUPFAMiSSF57667 SSF57667, 6 hits
PROSITEiView protein in PROSITE
PS00028 ZINC_FINGER_C2H2_1, 8 hits
PS50157 ZINC_FINGER_C2H2_2, 7 hits

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiTF3A_XENLA
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P03001
Secondary accession number(s): Q91856
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: July 15, 1998
Last modified: September 18, 2019
This is version 145 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
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