Q318H0 (Q318H0_PROM9) Unreviewed, UniProtKB/TrEMBL

Names and origin

Protein names

Recommended name:
S-adenosylmethionine decarboxylase proenzyme HAMAP MF_00464
Short name=AdoMetDC HAMAP MF_00464
Short name=SAMDC HAMAP MF_00464
EC=4.1.1.50 HAMAP MF_00464

Gene names

Name:	speH HAMAP MF_00464
Ordered Locus Names:	PMT9312_1664

Organism

Prochlorococcus marinus (strain MIT 9312) [Complete proteome] [HAMAP]

Taxonomic identifier

74546 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Prochlorophytes › Prochlorococcaceae › Prochlorococcus

Protein attributes

Sequence length	144 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the decarboxylation of S-adenosylmethionine to S-adenosylmethioninamine (dcAdoMet), the propylamine donor required for the synthesis of the polyamines spermine and spermidine from the diamine putrescine By similarity. HAMAP MF_00464
Catalytic activity	S-adenosyl-L-methionine = (5-deoxy-5-adenosyl)(3-aminopropyl)-methylsulfonium salt + CO2. HAMAP MF_00464
Cofactor	Pyruvoyl group By similarity. HAMAP MF_00464
Pathway	Amine and polyamine biosynthesis; S-adenosylmethioninamine biosynthesis; S-adenosylmethioninamine from S-adenosyl-L-methionine: step 1/1. HAMAP MF_00464
Subunit structure	Heterotetramer of two alpha and two beta chains arranged as a dimer of alpha/beta heterodimers By similarity. HAMAP MF_00464
Post-translational modification	Is synthesized initially as an inactive proenzyme. Formation of the active enzyme involves a self-maturation process in which the active site pyruvoyl group is generated from an internal serine residue via an autocatalytic post-translational modification. Two non-identical subunits are generated from the proenzyme in this reaction, and the pyruvate is formed at the N-terminus of the alpha chain, which is derived from the carboxyl end of the proenzyme. The post-translation cleavage follows an unusual pathway, termed non-hydrolytic serinolysis, in which the side chain hydroxyl group of the serine supplies its oxygen atom to form the C-terminus of the beta chain, while the remainder of the serine residue undergoes an oxidative deamination to produce ammonia and the pyruvoyl group blocking the N-terminus of the alpha chain By similarity. HAMAP MF_00464
Sequence similarities	Belongs to the prokaryotic AdoMetDC family. Type 1 subfamily. HAMAP MF_00464

Ontologies

Keywords
Biological process	Polyamine biosynthesis HAMAP MF_00464 Spermidine biosynthesis HAMAP MF_00464
Ligand	Pyruvate HAMAP MF_00464 S-adenosyl-L-methionine HAMAP MF_00464 Schiff base HAMAP MF_00464
Molecular function	Decarboxylase HAMAP MF_00464 Lyase
PTM	Autocatalytic cleavage HAMAP MF_00464 Zymogen HAMAP MF_00464
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	S-adenosylmethioninamine biosynthetic process Inferred from electronic annotation. Source: HAMAP spermidine biosynthetic process Inferred from electronic annotation. Source: HAMAP
Molecular function	adenosylmethionine decarboxylase activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Sites
	Active site	81	1	Schiff-base intermediate with substrate; via pyruvic acid By similarity HAMAP MF_00464
	Active site	86	1	Proton acceptor; for processing activity By similarity HAMAP MF_00464
	Active site	101	1	Proton donor; for catalytic activity By similarity HAMAP MF_00464
	Site	80 – 81	2	Cleavage (non-hydrolytic); by autolysis By similarity HAMAP MF_00464
Amino acid modifications
	Modified residue	81	1	Pyruvic acid (Ser); by autocatalysis By similarity HAMAP MF_00464

Sequences

	Sequence		Length	Mass (Da)
	Q318H0 [UniParc]. Last modified December 6, 2005. Version 1. Checksum: 0E78ADE815F36E41	FASTA	144	16,461
	10 20 30 40 50 60 MEVPKKNQNF SSFSNDEKLV YQSKHLLLEL YRCDYEKLND ESFLRCTLNR AAKLAKATVL 70 80 90 100 110 120 NLISNKFEPQ GVTAIALLAE SHISIHTWPE SNYSAVDIFT CGQNMMPELA SQYLIEALKA 130 140 EEHYLRAIER NPPEAVLQEI RTAV

References

[1]

"Complete sequence of Prochlorococcus marinus str. MIT 9312." Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T., Hammon N., Israni S., Pitluck S., Thiel J., Schmutz J., Larimer F., Land M., Kyrpides N., Lykidis A., Richardson P. Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: MIT 9312.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000111 Genomic DNA. Translation: ABB50725.1.
RefSeq	YP_398161.1. NC_007577.1.
3D structure databases
ProteinModelPortal	Q318H0.
ModBase	Search...
Protein-protein interaction databases
STRING	Q318H0.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	3766485.
GenomeReviews	Gene locus PMT9312_1664 in contig CP000111_GR.
KEGG	pmi:PMT9312_1664.
PATRIC	23007356. VBIProMar70153_1838.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG1586.
HOGENOM	HBG485559.
OMA	ISNKFEP.
PhylomeDB	Q318H0.
ProtClustDB	PRK02770.
Enzyme and pathway databases
BioCyc	PMAR74546:PMT9312_1664-MONOMER.
Family and domain databases
HAMAP	MF_00464. AdoMetDC_1. [Tree]
InterPro	IPR003826. S-AdoMet_decarboxylase-bac/arc. IPR016067. S-AdoMet_deCO2ase_core. IPR017716. S-AdoMet_deCOase_pro-enz. [Graphical view]
Gene3D	G3DSA:3.60.90.10. SAM_decarbox. 1 hit.
KO	K01611.
Pfam	PF02675. AdoMet_dc. 1 hit. [Graphical view]
SUPFAM	SSF56276. S-AdenosylMet_decarbase_core. 1 hit.
TIGRFAMs	TIGR03330. SAM_DCase_Bsu. 1 hit.
ProtoNet	Search...

Entry information

Entry name

Q318H0_PROM9

Accession

Primary (citable) accession number: Q318H0

Entry history

Integrated into UniProtKB/TrEMBL:	December 6, 2005
Last sequence update:	December 6, 2005
Last modified:	December 14, 2011
This is version 39 of the entry and version 1 of the sequence. [Complete history]

Entry status

Unreviewed (UniProtKB/TrEMBL)