A9B6Q3 (SERC_HERA2) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Phosphoserine aminotransferase
EC=2.6.1.52

Alternative name(s):
Phosphohydroxythreonine aminotransferase
Short name=PSAT

Gene names

Name:	serC
Ordered Locus Names:	Haur_1719

Organism

Herpetosiphon aurantiacus (strain ATCC 23779 / DSM 785) [Complete proteome] [HAMAP]

Taxonomic identifier

316274 [NCBI]

Taxonomic lineage

Bacteria › Chloroflexi › Herpetosiphonales › Herpetosiphonaceae › Herpetosiphon

Protein attributes

Sequence length	360 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the reversible conversion of 3-phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4-phosphonooxybutanoate to phosphohydroxythreonine By similarity. HAMAP MF_00160
Catalytic activity	O-phospho-L-serine + 2-oxoglutarate = 3-phosphonooxypyruvate + L-glutamate. HAMAP MF_00160 4-phosphonooxy-L-threonine + 2-oxoglutarate = (3R)-3-hydroxy-2-oxo-4-phosphonooxybutanoate + L-glutamate. HAMAP MF_00160
Cofactor	Binds 1 pyridoxal phosphate per subunit By similarity. HAMAP MF_00160
Pathway	Amino-acid biosynthesis; L-serine biosynthesis; L-serine from 3-phospho-D-glycerate: step 2/3. HAMAP MF_00160 Cofactor biosynthesis; pyridoxine 5'-phosphate biosynthesis; pyridoxine 5'-phosphate from D-erythrose 4-phosphate: step 3/5. HAMAP MF_00160
Subunit structure	Homodimer By similarity. HAMAP MF_00160
Subcellular location	Cytoplasm By similarity HAMAP MF_00160.
Sequence similarities	Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. SerC subfamily.

Ontologies

Keywords
Biological process	Amino-acid biosynthesis Pyridoxine biosynthesis Serine biosynthesis
Cellular component	Cytoplasm
Ligand	Pyridoxal phosphate
Molecular function	Aminotransferase Transferase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	L-serine biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW pyridoxine biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	O-phospho-L-serine:2-oxoglutarate aminotransferase activity Inferred from electronic annotation. Source: EC pyridoxal phosphate 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 – 360	360	Phosphoserine aminotransferase HAMAP MF_00160		PRO_1000097214
Regions
	Region	75 – 76	2	Pyridoxal phosphate binding By similarity
	Region	236 – 237	2	Pyridoxal phosphate binding By similarity
Sites
	Binding site	41	1	L-glutamate By similarity
	Binding site	101	1	Pyridoxal phosphate By similarity
	Binding site	151	1	Pyridoxal phosphate By similarity
	Binding site	171	1	Pyridoxal phosphate By similarity
	Binding site	194	1	Pyridoxal phosphate By similarity
Amino acid modifications
	Modified residue	195	1	N6-(pyridoxal phosphate)lysine By similarity

Sequences

	Sequence		Length	Mass (Da)
	A9B6Q3 [UniParc]. Last modified January 15, 2008. Version 1. Checksum: 0C74CCCEDA8CA4F6	FASTA	360	39,196
	10 20 30 40 50 60 MTVYNFNAGP AILPPSVLSQ AQEELRDFAG TGISVMETSH RAKEFEAVNN EVEARFKALL 70 80 90 100 110 120 GIESGYRVLL LQGGASTQFA MIPMNFLGAD QVADYIITGT WAEKARDEAQ KIGKVHIAAT 130 140 150 160 170 180 TEAENHNRIP SQTELQFSEN PVYVHLTTNN TIYGTQWQST PETNGVPIVA DMSSDIFSRP 190 200 210 220 230 240 FDASKFGLVY AGAQKNLGPS GVTVVLIRED WLDKGAKNVP TMLRYSTHAK NNSLYNTPPT 250 260 270 280 290 300 FGVYMLNLVL AWIQEQGGLA GMAEYNTRKA NVVYNAIDNS GGFYRGHAVA DSRSQMNVTF 310 320 330 340 350 360 NLPTQELEKQ FLAEAKAQGM IGLPGHRSVG GVRASIYNAM SIEGVEALAS FMAHFAAKQG

References

[1]

"Complete sequence of chromosome of Herpetosiphon aurantiacus ATCC 23779." US DOE Joint Genome Institute Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E., Tice H., Pitluck S., Kiss H., Brettin T., Bruce D., Detter J.C., Han C., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N. , Kim E., Bryant D.A., Richardson P. Submitted (OCT-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 23779 / DSM 785.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000875 Genomic DNA. Translation: ABX04362.1.
RefSeq	YP_001544490.1. NC_009972.1.
3D structure databases
ProteinModelPortal	A9B6Q3.
SMR	A9B6Q3. Positions 2-360.
ModBase	Search...
Protein-protein interaction databases
STRING	A9B6Q3.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	5733606.
GenomeReviews	Gene locus Haur_1719 in contig CP000875_GR.
KEGG	hau:Haur_1719.
PATRIC	22120473. VBIHerAur93466_1767.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG289982.
OMA	YEVLFLQ.
ProtClustDB	PRK05355.
Enzyme and pathway databases
BioCyc	HAUR316274:HAUR_1719-MONOMER.
Family and domain databases
HAMAP	MF_00160. SerC_aminotrans_5. [Tree]
InterPro	IPR000192. Aminotrans_V/Cys_dSase. IPR020578. Aminotrans_V_PyrdxlP_BS. IPR022278. Pser_aminoTfrase. IPR003248. Pser_aminoTfrase_subgr. IPR015424. PyrdxlP-dep_Trfase_major_dom. IPR015421. PyrdxlP-dep_Trfase_major_sub1. IPR015422. PyrdxlP-dep_Trfase_major_sub2. [Graphical view]
Gene3D	G3DSA:3.40.640.10. PyrdxlP-dep_Trfase_major_sub1. 1 hit. G3DSA:3.90.1150.10. PyrdxlP-dep_Trfase_major_sub2. 1 hit.
KO	K00831.
PANTHER	PTHR21152:SF1. PTHR21152:SF1. 1 hit.
Pfam	PF00266. Aminotran_5. 1 hit. [Graphical view]
PIRSF	PIRSF000525. SerC. 1 hit.
SUPFAM	SSF53383. PyrdxlP-dep_Trfase_major. 1 hit.
TIGRFAMs	TIGR01364. SerC_1. 1 hit.
PROSITE	PS00595. AA_TRANSFER_CLASS_5. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

SERC_HERA2

Accession

Primary (citable) accession number: A9B6Q3

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 24, 2009
Last sequence update:	January 15, 2008
Last modified:	January 25, 2012
This is version 35 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program