P74841 (BLC2_SALTM) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Beta-lactamase CTX-M-2
EC=3.5.2.6

Alternative name(s):
Cefotaximase 2

Gene names

Name:

bla

Encoded on

Plasmid pMVP-4

Organism

Salmonella typhimurium

Taxonomic identifier

90371 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Salmonella › Salmonella choleraesuis › Salmonella enterica I

Protein attributes

Sequence length	291 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Has cefotaxime-hydrolyzing activity.
Catalytic activity	A beta-lactam + H2O = a substituted beta-amino acid.
Sequence similarities	Belongs to the class-A beta-lactamase family.

Ontologies

Keywords
Biological process	Antibiotic resistance
Domain	Signal
Molecular function	Hydrolase
Technical term	Plasmid
Gene Ontology (GO)
Biological_process	beta-lactam antibiotic catabolic process Inferred from electronic annotation. Source: InterPro response to antibiotic Inferred from electronic annotation. Source: UniProtKB-KW
Molecular_function	beta-lactamase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 28	28	By similarity
	Chain	29 – 291	263	Beta-lactamase CTX-M-2		PRO_0000016990
Regions
	Region	237 – 239	3	Substrate binding By similarity
Sites
	Active site	73	1	Acyl-ester intermediate By similarity

Sequences

	Sequence		Length	Mass (Da)
	P74841 [UniParc]. Last modified February 1, 1997. Version 1. Checksum: 82277CD9CD41E7C0	FASTA	291	31,378
	10 20 30 40 50 60 MMTQSIRRSM LTVMATLPLL FSSATLHAQA NSVQQQLEAL EKSSGGRLGV ALINTADNSQ 70 80 90 100 110 120 ILYRADERFA MCSTSKVMAA AAVLKQSESD KHLLNQRVEI KKSDLVNYNP IAEKHVNGTM 130 140 150 160 170 180 TLAELGAAAL QYSDNTAMNK LIAHLGGPDK VTAFARSLGD ETFRLDRTEP TLNTAIPGDP 190 200 210 220 230 240 RDTTTPLAMA QTLKNLTLGK ALAETQRAQL VTWLKGNTTG SASIRAGLPK SWVVGDKTGS 250 260 270 280 290 GDYGTTNDIA VIWPENHAPL VLVTYFTQPE QKAESRRDIL AAAAKIVTHG F

References

[1]

"Sequences of beta-lactamase genes encoding CTX-M-1 (MEN-1) and CTX-M-2 and relationship of their amino acid sequences with those of other beta-lactamases." Bauernfeind A., Stemplinger I., Jungwirth R., Casellas J.M. Antimicrob. Agents Chemother. 40:509-513(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: CAS-5.

Cross-references

Sequence databases
EMBL GenBank DDBJ	X92507 Genomic DNA. Translation: CAA63263.1.
3D structure databases
ProteinModelPortal	P74841.
SMR	P74841. Positions 31-291.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
Gene3D	3.40.710.10. 1 hit.
InterPro	IPR012338. Beta-lactam/transpept-like. IPR000871. Beta-lactam_class-A/D. IPR023650. Beta-lactam_class-A_AS. [Graphical view]
PRINTS	PR00118. BLACTAMASEA.
SUPFAM	SSF56601. PBP_transp_fold. 1 hit.
PROSITE	PS00146. BETA_LACTAMASE_A. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

BLC2_SALTM

Accession

Primary (citable) accession number: P74841

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 30, 2000
Last sequence update:	February 1, 1997
Last modified:	April 3, 2013
This is version 58 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program