Reviewed, UniProtKB/Swiss-Prot P59666 (DEF3_HUMAN)

Names and origin

Protein names

Recommended name:
    Neutrophil defensin 3
Alternative name(s):
    HNP-3
      Short name=HP-3
      Short name=HP3
    Defensin, alpha 3
Cleaved into the following 2 chains:
    1- Recommended name:
            HP 3-56
    2- Recommended name:
            Neutrophil defensin 2
        Alternative name(s):
            HNP-2
              Short name=HP-2
              Short name=HP2

Gene names

Name:	DEFA3
Synonyms:	DEF3

Organism

Homo sapiens (Human)

Taxonomic identifier

9606 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo

Protein attributes

Sequence length	94 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Defensin 2 and defensin 3 have antibiotic, fungicide and antiviral activities. Has antimicrobial activity against Gram-negative and Gram-positive bacteria. Defensins are thought to kill microbes by permeabilizing their plasma membrane. Ref.9 Ref.11 Ref.12 Ref.13
Subunit structure	Dimer. Ref.11 Ref.13
Subcellular location	Secreted.
Sequence similarities	Belongs to the alpha-defensin family.

Ontologies

Keywords
Biological process	Antiviral defense
Cellular component	Secreted
Domain	Signal
Molecular function	Antibiotic Antimicrobial Defensin Fungicide
PTM	Disulfide bond Phosphoprotein
Technical term	3D-structure Direct protein sequencing
Gene Ontology (GO)
Biological process	defense response to bacterium Inferred from electronic annotation. Source: UniProtKB-KW defense response to fungus Inferred from electronic annotation. Source: UniProtKB-KW response to virus Inferred from electronic annotation. Source: UniProtKB-KW xenobiotic metabolic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	extracellular space Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Signal peptide

1 – 19

19

Propeptide

20 – 38

19

PRO_0000006777

Chain

39 – 94

56

HP 3-56

PRO_0000006778

Peptide

65 – 94

30

Neutrophil defensin 3

PRO_0000006779

Peptide

66 – 94

29

Neutrophil defensin 2

PRO_0000006780

Amino acid modifications

Modified residue

85

1

Phosphotyrosine Ref.10

Disulfide bond

66 ↔ 94

Ref.12 Ref.7

Disulfide bond

68 ↔ 83

Ref.12 Ref.7

Disulfide bond

73 ↔ 93

Ref.12 Ref.7

Secondary structure

1

.

.

.

.

.

.

94

Helix Strand Turn

Details...

Beta strand

67 – 71

5

Beta strand

78 – 85

8

Beta strand

88 – 94

7

Sequences

	Sequence		Length	Mass (Da)
	P59666-1 [UniParc]. Last modified April 30, 2003. Version 1. Checksum: 0E0F8E957376C6AF	FASTA	94	10,245
	10 20 30 40 50 60 MRTLAILAAI LLVALQAQAE PLQARADEVA AAPEQIAADI PEVVVSLAWD ESLAPKHPGS 70 80 90 RKNMDCYCRI PACIAGERRY GTCIYQGRLW AFCC

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Isolation and characterization of human defensin cDNA clones." Daher K.A., Lehrer R.I., Ganz T., Kronenberg M. Proc. Natl. Acad. Sci. U.S.A. 85:7327-7331(1988) [PubMed: 3174637] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[2]	"Differentiation stage-specific expression of a gene during granulopoiesis." Wiedemann L.M., Francis G.E., Lamb R.F., Burns J.H., Winnie J.N., McKenzie E.D., Birnie G.D. Leukemia 3:227-234(1989) [PubMed: 2918759] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[3]	"The structure of neutrophil defensin genes." Linzmeier R., Michaelson D., Liu L., Ganz T. FEBS Lett. 321:267-273(1993) [PubMed: 8477861] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[4]	Erratum Linzmeier R., Michaelson D., Liu L., Ganz T. FEBS Lett. 326:299-300(1993) [PubMed: 8325384] [Abstract]
[5]	"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Pancreas and Spleen.
[6]	"Primary structures of three human neutrophil defensins." Selsted M.E., Harwig S.S.L., Ganz T., Schilling J.W., Lehrer R.I. J. Clin. Invest. 76:1436-1439(1985) [PubMed: 4056036] [Abstract] Cited for: PROTEIN SEQUENCE OF 65-94.
[7]	"Determination of the disulfide array in the human defensin HNP-2. A covalently cyclized peptide." Selsted M.E., Harwig S.S.L. J. Biol. Chem. 264:4003-4007(1989) [PubMed: 2917986] [Abstract] Cited for: DISULFIDE BONDS.
[8]	"Posttranslational processing of defensins in immature human myeloid cells." Valore E.V., Ganz T. Blood 79:1538-1544(1992) [PubMed: 1339298] [Abstract] Cited for: PROTEOLYTIC PROCESSING.
[9]	"Antibacterial activity and specificity of the six human alpha-defensins." Ericksen B., Wu Z., Lu W., Lehrer R.I. Antimicrob. Agents Chemother. 49:269-275(2005) [PubMed: 15616305] [Abstract] Cited for: FUNCTION.
[10]	"Global survey of phosphotyrosine signaling identifies oncogenic kinases in lung cancer." Rikova K., Guo A., Zeng Q., Possemato A., Yu J., Haack H., Nardone J., Lee K., Reeves C., Li Y., Hu Y., Tan Z., Stokes M., Sullivan L., Mitchell J., Wetzel R., Macneill J., Ren J.M. , Yuan J., Bakalarski C.E., Villen J., Kornhauser J.M., Smith B., Li D., Zhou X., Gygi S.P., Gu T.-L., Polakiewicz R.D., Rush J., Comb M.J. Cell 131:1190-1203(2007) [PubMed: 18083107] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT TYR-85, MASS SPECTROMETRY.
[11]	"Crystal structure of defensin HNP-3, an amphiphilic dimer: mechanisms of membrane permeabilization." Hill C.P., Yee J., Selsted M.E., Eisenberg D. Science 251:1481-1485(1991) [PubMed: 2006422] [Abstract] Cited for: X-RAY CRYSTALLOGRAPHY (1.9 ANGSTROMS) OF DEFENSIN 3, SUBUNIT, FUNCTION.
[12]	"Reconstruction of the conserved beta-bulge in mammalian defensins using D-amino acids." Xie C., Prahl A., Ericksen B., Wu Z., Zeng P., Li X., Lu W.-Y., Lubkowski J., Lu W. J. Biol. Chem. 280:32921-32929(2005) [PubMed: 15894545] [Abstract] Cited for: X-RAY CRYSTALLOGRAPHY (1.15 ANGSTROMS) OF 66-94, DISULFIDE BONDS, FUNCTION.
[13]	"Toward understanding the cationicity of defensins. Arg and Lys versus their noncoded analogs." Zou G., de Leeuw E., Li C., Pazgier M., Li C., Zeng P., Lu W.-Y., Lubkowski J., Lu W. J. Biol. Chem. 282:19653-19665(2007) [PubMed: 17452329] [Abstract] Cited for: X-RAY CRYSTALLOGRAPHY (2.4 ANGSTROMS) OF 65-94, FUNCTION, SUBUNIT.
+	Additional computationally mapped references.

Cross-references

Sequence databases

EMBLGenBankDDBJ

M21131 mRNA. Translation: AAA35753.2.
M23281 mRNA. Translation: AAA52304.1.
L12691 Genomic DNA. Translation: AAB57722.1.
X13621 mRNA. Translation: CAA31952.1.
BC027917 mRNA. Translation: AAH27917.1.

IPI

IPI00021827.

PIR

C40499.

RefSeq

NP_005208.1.

UniGene

Hs.654448

3D structure databases

PDBPDBe

Entry	Method	Resolution (Å)	Chain	Positions	PDBsum
1DFN	X-ray	1.90	A/B	66-94	[»]
1ZMH	X-ray	1.50	A/B/C/D	66-94	[»]
1ZMI	X-ray	1.15	A/B/C/D	66-94	[»]
1ZMK	X-ray	1.30	A/B	66-94	[»]
2PM4	X-ray	1.95	A/B	65-94	[»]
2PM5	X-ray	2.40	A/B	65-94	[»]

ModBase

Search...

PTM databases

PhosphoSite

P59666.

Proteomic databases

PRIDE

P59666.

Genome annotation databases

Ensembl

ENSG00000185918. Homo sapiens. [Contig view]

GeneID

1668.

KEGG

hsa:1668.

Organism-specific databases

GeneCards

GC08M006860.

H-InvDB

HIX0007285.

HGNC

HGNC:2762. DEFA3.

MIM

604522. gene.

PharmGKB

PA27239.

GenAtlas

Search...

Phylogenomic databases

HOGENOM

P59666.

HOVERGEN

P59666.

OMA

P59666. PRCTATE.

Gene expression databases

CleanEx

HS_DEFA3.

GermOnline

ENSG00000185918. Homo sapiens.

Family and domain databases

InterPro

IPR016327. Alpha-defensin.
IPR006081. Defensin_alpha.
IPR006080. Defensin_mammal.
IPR002366. Defensin_propep.
[Graphical view]

Pfam

PF00323. Defensin_1. 1 hit.
PF00879. Defensin_propep. 1 hit.
[Graphical view]

PIRSF

PIRSF001875. Alpha-defensin. 1 hit.

SMART

SM00048. DEFSN. 1 hit.
[Graphical view]

PROSITE

PS00269. DEFENSIN. 1 hit.
[Graphical view]

ProtoNet

Search...

Other Resources

NextBio

6864.

PMAP-CutDB

P59666.

SOURCE

Search...

Entry information

Entry name

DEF3_HUMAN

Accession

Primary (citable) accession number: P59666
Secondary accession number(s): P11479, Q14125

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 30, 2003
Last sequence update:	April 30, 2003
Last modified:	June 16, 2009
This is version 63 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)