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

<p>Describes the catalytic activity of an enzyme, i.e. the chemical reaction it catalyzes. This information usually correlates with the presence of an EC (Enzyme Commission) number in the ‘Names and taxonomy’ section.</p><p><a href='../manual/catalytic_activity' target='_top'>More...</a></p>Catalytic activityⁱ

<p>Provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.</p><p><a href='../manual/cofactor' target='_top'>More...</a></p>Cofactorⁱ

• Mg²⁺UniRule annotation

  <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesⁱ

  • HAMAP-Rule:MF_01283
  , Mn²⁺UniRule annotation

  <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesⁱ

  • HAMAP-Rule:MF_01283
  Note: Binds 2 divalent metal cations per subunit. Magnesium or manganese.UniRule annotation

  <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesⁱ

  • HAMAP-Rule:MF_01283
• Zn²⁺UniRule annotation

  <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesⁱ

  • HAMAP-Rule:MF_01283
  Note: Binds 1 zinc ion per subunit.UniRule annotation

  <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesⁱ

  • HAMAP-Rule:MF_01283

<p>Describes the metabolic pathway(s) associated with a protein.</p><p><a href='../manual/pathway' target='_top'>More...</a></p>Pathwayⁱ

Sites

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.</p><p><a href='../manual/metal' target='_top'>More...</a></p>Metal bindingi	32 – 32	1	Magnesium or manganese 1UniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.</p><p><a href='../manual/metal' target='_top'>More...</a></p>Metal bindingi	32 – 32	1	Magnesium or manganese 2UniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	36 – 36	1	D-ribulose 5-phosphateUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.</p><p><a href='../manual/site' target='_top'>More...</a></p>Sitei	129 – 129	1	Essential for DHBP synthase activityUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.</p><p><a href='../manual/metal' target='_top'>More...</a></p>Metal bindingi	146 – 146	1	Magnesium or manganese 2UniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	167 – 167	1	D-ribulose 5-phosphateUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.</p><p><a href='../manual/site' target='_top'>More...</a></p>Sitei	167 – 167	1	Essential for DHBP synthase activityUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.</p><p><a href='../manual/metal' target='_top'>More...</a></p>Metal bindingi	260 – 260	1	Zinc; catalyticUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.</p><p><a href='../manual/metal' target='_top'>More...</a></p>Metal bindingi	271 – 271	1	Zinc; catalyticUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.</p><p><a href='../manual/metal' target='_top'>More...</a></p>Metal bindingi	273 – 273	1	Zinc; catalyticUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	276 – 276	1	GTPUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	320 – 320	1	GTPUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Is used for enzymes and indicates the residues directly involved in catalysis.</p><p><a href='../manual/act_site' target='_top'>More...</a></p>Active sitei	332 – 332	1	Proton acceptor; for GTP cyclohydrolase activityUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Is used for enzymes and indicates the residues directly involved in catalysis.</p><p><a href='../manual/act_site' target='_top'>More...</a></p>Active sitei	334 – 334	1	Nucleophile; for GTP cyclohydrolase activityUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	355 – 355	1	GTPUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	360 – 360	1	GTPUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283

Regions

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.</p><p><a href='../manual/np_bind' target='_top'>More...</a></p>Nucleotide bindingi	255 – 259	5	GTPUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.</p><p><a href='../manual/np_bind' target='_top'>More...</a></p>Nucleotide bindingi	298 – 300	3	GTPUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283

<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><p><a href='../manual/gene_ontology' target='_top'>More...</a></p>GO - Molecular functionⁱ

1. 3,4-dihydroxy-2-butanone-4-phosphate synthase activity Source: UniProtKB-HAMAP
2. GTP binding Source: UniProtKB-KW
3. GTP cyclohydrolase II activity Source: UniProtKB-HAMAP
4. magnesium ion binding Source: UniProtKB-HAMAP
5. manganese ion binding Source: UniProtKB-HAMAP
6. zinc ion binding Source: UniProtKB-HAMAP

<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><p><a href='../manual/gene_ontology' target='_top'>More...</a></p>GO - Biological processⁱ

1. riboflavin biosynthetic process Source: UniProtKB-HAMAP

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Molecular functionⁱ

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Biological processⁱ

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Ligandⁱ

Enzyme and pathway databases

<p>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><p><a href='../manual/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyⁱ

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

Region

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Describes a region of interest that cannot be described in other subsections.</p><p><a href='../manual/region' target='_top'>More...</a></p>Regioni	1 – 204	204	DHBP synthaseUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283			Add BLAST
<p>Describes a region of interest that cannot be described in other subsections.</p><p><a href='../manual/region' target='_top'>More...</a></p>Regioni	31 – 32	2	D-ribulose 5-phosphate bindingUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes a region of interest that cannot be described in other subsections.</p><p><a href='../manual/region' target='_top'>More...</a></p>Regioni	143 – 147	5	D-ribulose 5-phosphate bindingUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283
<p>Describes a region of interest that cannot be described in other subsections.</p><p><a href='../manual/region' target='_top'>More...</a></p>Regioni	205 – 408	204	GTP cyclohydrolase IIUniRule annotation <p>Information which has been generated by the UniProtKB automatic annotation system, without manual validation.</p> <p><a href="/manual/evidences#ECO:0000256">More…</a></p> Automatic assertion according to rulesi HAMAP-Rule:MF_01283			Add BLAST

<p>Provides information about the sequence similarity with other proteins.</p><p><a href='../manual/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesⁱ

Phylogenomic databases

Family and domain databases

<p>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 length and molecular weight.</p><p><a href='../manual/sequences_section' target='_top'>More...</a></p>Sequenceⁱ

<p>Indicates if the canonical sequence displayed by default in the entry is complete or not.</p><p><a href='../manual/sequence_status' target='_top'>More...</a></p>Sequence statusⁱ: Complete.

        10         20         30         40         50
MDKKFQFAPI EQAIEDIRAG KMVLVTDDPD RENEGDLIMS AEYVTPDDIN 
        60         70         80         90        100
FMATHAKGLI CMPCDGAILD RLQMEPMVAN NTDNHETAFT VSIDHKDTTT 
       110        120        130        140        150
GISAVERAYT IKKCTDESAK PEDFRRPGHV FPLRSREGGV LRRTGHTETT 
       160        170        180        190        200
TDLCRLAGLK PVGICCEIMS ADGTMARTPE LIEFARKFNL TFITVADLIA 
       210        220        230        240        250
YRKKNEKMVH RIANVALPSK YGTFRAIGYE NDLDDKCHVA IIKGDVAGKK 
       260        270        280        290        300
DVLVRVHSEC LTGDALGSLR CDCGDQLATS LKMIEKEGCG VVLYMQQEGR 
       310        320        330        340        350
GIGLANKLRA YELQDQGLDT VDANVKLGFK PDMRDYGIGA QILADLGLTS 
       360        370        380        390        400
IRLMTNNPAK RAGLSGYGIT ITETVPIIMK DNCYNHRYMV TKQVRMGHEL 

HEDVEDAK                                             

Sequence databases

Genome annotation databases

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

Sequence databases

3D structure databases

Protocols and materials databases

Genome annotation databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

<p>Contains the literature citations that are the sources of data used to annotate the entry. Each reference is numbered and contains several subsections allowing a precise description of a given citation.</p><p><a href='../manual/publications_section' target='_top'>More...</a></p>Publicationsⁱ

1. "Complete genome sequence of Acidaminococcus fermentans type strain (VR4)."
   Chang Y.J., Pukall R., Saunders E., Lapidus A., Copeland A., Nolan M., Glavina Del Rio T., Lucas S., Chen F., Tice H., Cheng J.F., Han C., Detter J.C., Bruce D., Goodwin L., Pitluck S., Mikhailova N., Liolios K.

   , Pati A., Ivanova N., Mavromatis K., Chen A., Palaniappan K., Land M., Hauser L., Jeffries C.D., Brettin T., Rohde M., Goker M., Bristow J., Eisen J.A., Markowitz V., Hugenholtz P., Kyrpides N.C., Klenk H.P.
   Stand. Genomic Sci. 3:1-14(2010) [PubMed] [Europe PMC] [Abstract]
   Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
   Strain: ATCC 25085 / DSM 20731 / VR4Imported

   <p>Information which has been imported from another database using automatic procedures.</p> <p><a href="/manual/evidences#ECO:0000313">More…</a></p> Automatic assertion inferred from database entriesⁱ

   • Proteomes:UP000001902
   .
   

<p>Provides general information on the entry.</p><p><a href='../manual/entry_information_section' target='_top'>More...</a></p>Entry informationⁱ

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

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Technical termⁱ

External Data

<p>Provides links to the UniProt Reference Clusters (<a href="/help/uniref">UniRef</a>). UniRef consists of clusters for UniProtKB sequences (including isoforms) and selected UniParc sequences, in order to obtain complete coverage of the sequence space at resolutions of 100%, 90% and 50% identity.</p><p><a href='../manual/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsⁱ