Q8G6T9 (PURA_BIFLO) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Adenylosuccinate synthetase
Short name=AMPSase
Short name=AdSS
EC=6.3.4.4

Alternative name(s):
IMP--aspartate ligase

Gene names

Name:	purA
Ordered Locus Names:	BL0549

Organism

Bifidobacterium longum (strain NCC 2705)

Taxonomic identifier

206672 [NCBI]

Taxonomic lineage

Bacteria › Actinobacteria › Actinobacteridae › Bifidobacteriales › Bifidobacteriaceae › Bifidobacterium

Protein attributes

Sequence length	428 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Plays an important role in the de novo pathway of purine nucleotide biosynthesis. Catalyzes the first commited step in the biosynthesis of AMP from IMP By similarity. HAMAP MF_00011
Catalytic activity	GTP + IMP + L-aspartate = GDP + phosphate + N(6)-(1,2-dicarboxyethyl)-AMP. HAMAP MF_00011
Cofactor	Binds 1 magnesium ion per subunit By similarity. HAMAP MF_00011
Pathway	Purine metabolism; AMP biosynthesis via de novo pathway; AMP from IMP: step 1/2. HAMAP MF_00011
Subunit structure	Homodimer By similarity. HAMAP MF_00011
Subcellular location	Cytoplasm By similarity HAMAP MF_00011.
Sequence similarities	Belongs to the adenylosuccinate synthetase family.

Ontologies

Keywords
Biological process	Purine biosynthesis
Cellular component	Cytoplasm
Ligand	GTP-binding Magnesium Metal-binding Nucleotide-binding
Molecular function	Ligase
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological process	purine nucleotide biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	GTP binding Inferred from electronic annotation. Source: UniProtKB-KW adenylosuccinate synthase activity Inferred from electronic annotation. Source: EC magnesium ion binding Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 428	428	Adenylosuccinate synthetase HAMAP MF_00011		PRO_0000095148
Regions
	Nucleotide binding	12 – 18	7	GTP By similarity
	Nucleotide binding	40 – 42	3	GTP By similarity
	Nucleotide binding	330 – 332	3	GTP By similarity
	Nucleotide binding	412 – 414	3	GTP By similarity
	Region	13 – 16	4	IMP binding By similarity
	Region	38 – 41	4	IMP binding By similarity
	Region	298 – 304	7	Substrate binding By similarity
Sites
	Active site	13	1	Proton acceptor By similarity
	Active site	41	1	Proton donor By similarity
	Metal binding	13	1	Magnesium By similarity
	Metal binding	40	1	Magnesium; via carbonyl oxygen By similarity
	Binding site	128	1	IMP By similarity
	Binding site	142	1	IMP; shared with dimeric partner By similarity
	Binding site	223	1	IMP By similarity
	Binding site	238	1	IMP By similarity
	Binding site	302	1	IMP By similarity
	Binding site	304	1	GTP By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q8G6T9 [UniParc]. Last modified March 1, 2003. Version 1. Checksum: 6C19E08701905430	FASTA	428	46,452
	10 20 30 40 50 60 MPGIVLIGAQ WGDEGKGKAT DLIGTKVDYV ARFNGGNNAG HSVVVGDESY ALHLLPSGII 70 80 90 100 110 120 NPNLTPVIGN GVVVDPEVLF EEIDGLESRG IDCSHLKVSE AAHIIAPYHR TLDKVTERFL 130 140 150 160 170 180 GKHKIGTTGR GIGPAYADKI NRVGIRVHDL FNADHLHDKV EASLHQKNQM LVKLYNRRPI 190 200 210 220 230 240 DVDQTTEELL KLGERLKPYV ANTGLILNKA LDEGKTVLFE GAQATMLDVD HGTYPFVTSS 250 260 270 280 290 300 NPTAGGACTG TGVGPTRITR VVGVSKAYVT RVGEGPFPTE LLDESGEWLR QQGHEFGVTT 310 320 330 340 350 360 GRPRRCGWFD AVVNRYASQV NGLTDIVLTK LDVLAGLKEI PICVAYDVDG ERHDDMPTDQ 370 380 390 400 410 420 AAFAAAKPIY ETMPGWDEDI SNCHSFDELP ATCQAYVKRL EELSGCRISA IGTGPQRDHV IQINSLVD

References

[1]

"The genome sequence of Bifidobacterium longum reflects its adaptation to the human gastrointestinal tract." Schell M.A., Karmirantzou M., Snel B., Vilanova D., Berger B., Pessi G., Zwahlen M.-C., Desiere F., Bork P., Delley M., Pridmore R.D., Arigoni F. Proc. Natl. Acad. Sci. U.S.A. 99:14422-14427(2002) [PubMed: 12381787] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: NCC 2705.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE014295 Genomic DNA. Translation: AAN24373.1.
RefSeq	NP_695737.1. NC_004307.2.
3D structure databases
ProteinModelPortal	Q8G6T9.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1022076.
GenomeReviews	Gene locus BL0549 in contig AE014295_GR.
KEGG	blo:BL0549.
NMPDR	fig|206672.1.peg.504.
PATRIC	21119689. VBIBifLon107831_1293.
Phylogenomic databases
HOGENOM	HBG658237.
OMA	DYVVRYQ.
PhylomeDB	Q8G6T9.
ProtClustDB	PRK01117.
Enzyme and pathway databases
BioCyc	BLON206672:BL0549-MONOMER.
Family and domain databases
HAMAP	MF_00011. Adenylosucc_synth. [Tree]
InterPro	IPR018220. Adenylosuccinate_synthase_AS. IPR001114. Adenylosuccinate_synthetase. [Graphical view]
KO	K01939.
PANTHER	PTHR11846. Asucc_synthtase. 1 hit.
Pfam	PF00709. Adenylsucc_synt. 1 hit. [Graphical view]
SMART	SM00788. Adenylsucc_synt. 1 hit. [Graphical view]
TIGRFAMs	TIGR00184. PurA. 1 hit.
PROSITE	PS01266. ADENYLOSUCCIN_SYN_1. 1 hit. PS00513. ADENYLOSUCCIN_SYN_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

PURA_BIFLO

Accession

Primary (citable) accession number: Q8G6T9

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 23, 2003
Last sequence update:	March 1, 2003
Last modified:	January 25, 2012
This is version 59 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program