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Title :   SOLUTION STRUCTURE OF HEPCIDIN-20

Authors :   H. N. Hunter, D. B. Fulton, T. Ganz, H. J. Vogel

Date :   02 Jul 02 (Deposition) - 06 Nov 02 (Release) - 24 Feb 09 (Revision)

Method :   SOLUTION NMR

Resolution :   NOT APPLICABLE

Chains :   NMR Structure  : A  (20x)

Keywords :   Strand-Loop-Strand, Beta-Sheet, Hairpin Loop, Antimicrobial Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   H. N. Hunter, D. B. Fulton, T. Ganz, H. J. Vogel
The Solution Structure Of Human Hepcidin, A Peptide Hormone With Antimicrobial Activity That Is Involved In Iron Uptake And Hereditary Hemochromatosis.
J. Biol. Chem. V. 277 37597 2002
PubMed-ID: 12138110 | Reference-DOI: 10.1074/JBC.M205305200
(for further references see the PDB file header)

Molecule 1 - HEPCIDIN
	Chains	:	A
	Engineered	:	YES
	Fragment	:	HEPCIDIN-20 (RESIDUES 65-84)
	Other Details	:	THE SEQUENCE OF THE PROTEIN IS NATURALLY FOUND IN HOMO SAPIENS. THE PROTEIN WAS CHEMICALLY SYNTHESIZED.
	Synonym	:	LIVER-EXPRESSED ANTIMICROBIAL PEPTIDE, LEAP-1, PUTATIVE LIVER TUMOR REGRESSOR, PLTR, HEPC20
	Synthetic	:	YES


NMR Structure (20x)	:

Summary Information (see also Sequences/Alignments below)

(no "Ligand,Modified Residues,Ions" information available for 1M4E)

(no "Site" information available for 1M4E)

NMR Structure

No.	Residues
1	A:2	-	A:18
2	A:5	-	A:17
3	A:6	-	A:14
4	A:8	-	A:9

(no "Cis Peptide Bond" information available for 1M4E)

NMR Structure (3, 3)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_042513	C	70	R	HEPC_HUMAN	Disease (HFE2B)	---	A	C	6	R
2	UniProt	VAR_026648	G	71	D	HEPC_HUMAN	Disease (HFE2B)	104894696	A	G	7	D
3	UniProt	VAR_042514	C	78	Y	HEPC_HUMAN	Disease (HFE2B)	---	A	C	14	Y

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(no "PROSITE Motif" information available for 1M4E)

NMR Structure (1, 1)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENST00000222304	1	ENSE00000862777	chr19:35773410-35773570	161	HEPC_HUMAN	1-30	30	0	-	-
1.2	ENST00000222304	2	ENSE00000700274	chr19:35775692-35775751	60	HEPC_HUMAN	31-50	20	0	-	-
1.3	ENST00000222304	3	ENSE00000862778	chr19:35775841-35776046	206	HEPC_HUMAN	51-84	34	1	A:1-20	20

NMR Structure

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
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Chain A from PDB  Type:PROTEIN  Length:20
 aligned with HEPC_HUMAN | P81172 from UniProtKB/Swiss-Prot  Length:84

    Alignment length:20
                                    74        84
            HEPC_HUMAN   65 ICIFCCGCCHRSKCGMCCKT 84
               SCOP domains d1m4ea_ A: Hepcidin  SCOP domains
               CATH domains -------------------- CATH domains
               Pfam domains Hepcidin-1m4eA01     Pfam domains
         Sec.struct. author ..eeee.......eeee... Sec.struct. author
                 SAPs(SNPs) -----RD------Y------ SAPs(SNPs)
                    PROSITE -------------------- PROSITE
               Transcript 1 Exon 1.3  PDB: A:1-2 Transcript 1
                  1m4e A  1 ICIFCCGCCHRSKCGMCCKT 20
                                    10        20

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

NMR Structure

Classes(

)

Folds(

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Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

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Class: Peptides (792)

Fold: Antimicrobial beta-hairpin (17)

Superfamily: Antimicrobial beta-hairpin (17)

Family: Hepcidin (4)

Protein domain: Hepcidin (4)

Synthetic, based on human sequence (2)

d1m4ea_

(no "CATH Domain" information available for 1M4E)

NMR Structure

Clans(

)

Families(

)

Organisms( (-)

)

Clan: no clan defined [family: Hepcidin] (4)

Family: Hepcidin (4)

Homo sapiens (Human) (3)

Hepcidin-1m4eA01

A:1-20

NMR Structure(hide GO term definitions)

Chain A (HEPC_HUMAN | P81172)

molecular function
	GO:0005179	hormone activity	The action characteristic of a hormone, any substance formed in very small amounts in one specialized organ or group of cells and carried (sometimes in the bloodstream) to another organ or group of cells in the same organism, upon which it has a specific regulatory action. The term was originally applied to agents with a stimulatory physiological action in vertebrate animals (as opposed to a chalone, which has a depressant action). Usage is now extended to regulatory compounds in lower animals and plants, and to synthetic substances having comparable effects; all bind receptors and trigger some biological process.
	GO:0097690	iron channel inhibitor activity	Stops, prevents, or reduces the activity of an iron channel.
	GO:0005102	receptor binding	Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
biological process
	GO:0006879	cellular iron ion homeostasis	Any process involved in the maintenance of an internal steady state of iron ions at the level of a cell.
	GO:0042742	defense response to bacterium	Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
	GO:0050832	defense response to fungus	Reactions triggered in response to the presence of a fungus that act to protect the cell or organism.
	GO:0006955	immune response	Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
	GO:0031640	killing of cells of other organism	Any process in an organism that results in the killing of cells of another organism, including in some cases the death of the other organism. Killing here refers to the induction of death in one cell by another cell, not cell-autonomous death due to internal or other environmental conditions.
	GO:0060586	multicellular organismal iron ion homeostasis	Any process involved in the maintenance of the distribution of iron stores within tissues and organs of a multicellular organism.
	GO:1904039	negative regulation of ferrous iron export	Any process that stops, prevents or reduces the frequency, rate or extent of iron(2+) export.
	GO:1904479	negative regulation of intestinal absorption	Any process that stops, prevents or reduces the frequency, rate or extent of intestinal absorption.
	GO:0032413	negative regulation of ion transmembrane transporter activity	Any process that stops or reduces the activity of an ion transporter.
	GO:1904255	negative regulation of iron channel activity	Any process that stops, prevents or reduces the frequency, rate or extent of iron channel activity.
	GO:0000122	negative regulation of transcription from RNA polymerase II promoter	Any process that stops, prevents, or reduces the frequency, rate or extent of transcription from an RNA polymerase II promoter.
	GO:1902916	positive regulation of protein polyubiquitination	Any process that activates or increases the frequency, rate or extent of protein polyubiquitination.
	GO:2000646	positive regulation of receptor catabolic process	Any process that activates or increases the frequency, rate or extent of receptor catabolic process.
	GO:0002092	positive regulation of receptor internalization	Any process that activates or increases the frequency, rate or extent of receptor internalization.
	GO:0010039	response to iron ion	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an iron ion stimulus.
cellular component
	GO:0045179	apical cortex	The region that lies just beneath the plasma membrane on the apical edge of a cell.
	GO:0005623	cell	The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope.
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

NMR Structure
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	HEPC_HUMAN \| P81172	:	1m4f 2kef 3h0t 4qae

1m4f	THE SOLUTION STRUCTURE OF HEPCIDIN-25

Description

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Ligands, Modified Residues, Ions (0, 0)

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SS Bonds (4, 4)

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