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Title :   STRUCTURE OF AHPD FROM MYCOBACTERIUM TUBERCULOSIS, A NOVEL ENZYME WITH THIOREDOXIN-LIKE ACTIVITY.

Authors :   R. Bryk, C. D. Lima, H. Erdjument-Bromage, P. Tempst, C. Nathan

Date :   18 Dec 01 (Deposition) - 23 Jan 02 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.00

Chains :   Asym. Unit : A,B,C
Biol. Unit 1: A,B,C  (1x)
Biol. Unit 2: A,B,C  (2x)

Keywords :   Ahpd, Thioredoxin, Disulfide, Peroxiredoxin, Lpd, Redox, Electron Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   R. Bryk, C. D. Lima, H. Erdjument-Bromage, P. Tempst, C. Nathan
Metabolic Enzymes Of Mycobacteria Linked To Antioxidant Defense By A Thioredoxin-Like Protein.
Science V. 295 1073 2002
PubMed-ID: 11799204 | Reference-DOI: 10.1126/SCIENCE.1067798
(for further references see the PDB file header)

Molecule 1 - AHPD PROTEIN
	Chains	:	A, B, C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Scientific	:	MYCOBACTERIUM TUBERCULOSIS
	Organism Taxid	:	1773

		1	2	3
Asymmetric Unit	:	A	B	C
Biological Unit 1 (1x)	:	A	B	C
Biological Unit 2 (2x)	:	A	B	C

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 17)

No.	Name	Count	Type	Full Name
1	SO4	17	Ligand/Ion	SULFATE ION

Biological Unit 1 (1, 17)

No.	Name	Count	Type	Full Name
1	SO4	17	Ligand/Ion	SULFATE ION

Biological Unit 2 (1, 34)

No.	Name	Count	Type	Full Name
1	SO4	34	Ligand/Ion	SULFATE ION

Asymmetric Unit (17, 17)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	ARG B:68 , HIS B:69	BINDING SITE FOR RESIDUE SO4 B 601
02	AC2	SOFTWARE	PRO C:113 , LYS C:114	BINDING SITE FOR RESIDUE SO4 C 602
03	AC3	SOFTWARE	PRO A:113 , LYS A:114 , HOH A:650 , HOH A:676 , HOH A:677 , PRO B:113 , HOH B:626	BINDING SITE FOR RESIDUE SO4 A 603
04	AC4	SOFTWARE	ARG B:142	BINDING SITE FOR RESIDUE SO4 B 604
05	AC5	SOFTWARE	HIS B:132 , HOH B:653	BINDING SITE FOR RESIDUE SO4 B 605
06	AC6	SOFTWARE	TYR B:85 , ARG B:88 , HOH B:698	BINDING SITE FOR RESIDUE SO4 B 606
07	AC7	SOFTWARE	ARG A:88 , HIS A:132 , HIS A:139 , HOH A:632 , HOH A:695 , HOH A:741	BINDING SITE FOR RESIDUE SO4 A 607
08	AC8	SOFTWARE	GLY A:89 , HIS A:132 , HOH A:640 , HOH A:641 , HOH A:647 , HOH A:687 , ARG B:94	BINDING SITE FOR RESIDUE SO4 A 608
09	AC9	SOFTWARE	PRO B:113 , LYS B:114 , HOH B:639	BINDING SITE FOR RESIDUE SO4 B 609
10	BC1	SOFTWARE	ARG C:68 , HIS C:69	BINDING SITE FOR RESIDUE SO4 C 610
11	BC2	SOFTWARE	GLY C:89 , HIS C:132 , HOH C:643 , HOH C:646	BINDING SITE FOR RESIDUE SO4 C 611
12	BC3	SOFTWARE	ARG A:99 , SER B:64 , ALA B:65 , ARG B:68 , HOH B:712	BINDING SITE FOR RESIDUE SO4 B 612
13	BC4	SOFTWARE	ARG A:103 , ASN A:105 , HOH A:718 , HOH A:737 , LYS C:15	BINDING SITE FOR RESIDUE SO4 A 613
14	BC5	SOFTWARE	TYR C:85 , ARG C:88	BINDING SITE FOR RESIDUE SO4 C 614
15	BC6	SOFTWARE	LYS B:15 , ARG C:103 , ASN C:105	BINDING SITE FOR RESIDUE SO4 C 615
16	BC7	SOFTWARE	LYS A:15 , ARG B:103 , ASN B:105	BINDING SITE FOR RESIDUE SO4 B 616
17	BC8	SOFTWARE	SER A:64 , ALA A:65 , HOH A:624 , HOH B:695	BINDING SITE FOR RESIDUE SO4 A 617

(no "SS Bond" information available for 1KNC)

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

(no "SAP(SNP)/Variant" information available for 1KNC)

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

(no "Exon" information available for 1KNC)

Asymmetric Unit

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

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:174
 aligned with AHPD_MYCTO | P9WQB4 from UniProtKB/Swiss-Prot  Length:177

    Alignment length:174
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171    
           AHPD_MYCTO     2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
               SCOP domains d1knca_ A: Antioxidant defense protein AhpD                                                                                                                                    SCOP domains
               CATH domains 1kncA00 A:2-175 AhpD-like                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1knc A   2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171

Chain A from PDB  Type:PROTEIN  Length:174
 aligned with AHPD_MYCTU | P9WQB5 from UniProtKB/Swiss-Prot  Length:177

    Alignment length:174
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171    
           AHPD_MYCTU     2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
               SCOP domains d1knca_ A: Antioxidant defense protein AhpD                                                                                                                                    SCOP domains
               CATH domains 1kncA00 A:2-175 AhpD-like                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1knc A   2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171

Chain B from PDB  Type:PROTEIN  Length:174
 aligned with AHPD_MYCTO | P9WQB4 from UniProtKB/Swiss-Prot  Length:177

    Alignment length:174
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171    
           AHPD_MYCTO     2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
               SCOP domains d1kncb_ B: Antioxidant defense protein AhpD                                                                                                                                    SCOP domains
               CATH domains 1kncB00 B:2-175 AhpD-like                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1knc B   2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171

Chain B from PDB  Type:PROTEIN  Length:174
 aligned with AHPD_MYCTU | P9WQB5 from UniProtKB/Swiss-Prot  Length:177

    Alignment length:174
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171    
           AHPD_MYCTU     2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
               SCOP domains d1kncb_ B: Antioxidant defense protein AhpD                                                                                                                                    SCOP domains
               CATH domains 1kncB00 B:2-175 AhpD-like                                                                                                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1knc B   2 SIEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171

Chain C from PDB  Type:PROTEIN  Length:173
 aligned with AHPD_MYCTO | P9WQB4 from UniProtKB/Swiss-Prot  Length:177

    Alignment length:173
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172   
           AHPD_MYCTO     3 IEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
               SCOP domains d1kncc_ C: Antioxidant defense protein AhpD                                                                                                                                   SCOP domains
               CATH domains 1kncC00 C:3-175 AhpD-like                                                                                                                                                     CATH domains
           Pfam domains (1) -------------------------------------------------------------------------------------------CMD-1kncC01 C:94-175                                                               Pfam domains (1)
           Pfam domains (2) -------------------------------------------------------------------------------------------CMD-1kncC02 C:94-175                                                               Pfam domains (2)
           Pfam domains (3) -------------------------------------------------------------------------------------------CMD-1kncC03 C:94-175                                                               Pfam domains (3)
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1knc C   3 IEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172

Chain C from PDB  Type:PROTEIN  Length:173
 aligned with AHPD_MYCTU | P9WQB5 from UniProtKB/Swiss-Prot  Length:177

    Alignment length:173
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172   
           AHPD_MYCTU     3 IEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
               SCOP domains d1kncc_ C: Antioxidant defense protein AhpD                                                                                                                                   SCOP domains
               CATH domains 1kncC00 C:3-175 AhpD-like                                                                                                                                                     CATH domains
           Pfam domains (1) -------------------------------------------------------------------------------------------CMD-1kncC01 C:94-175                                                               Pfam domains (1)
           Pfam domains (2) -------------------------------------------------------------------------------------------CMD-1kncC02 C:94-175                                                               Pfam domains (2)
           Pfam domains (3) -------------------------------------------------------------------------------------------CMD-1kncC03 C:94-175                                                               Pfam domains (3)
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhh.hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1knc C   3 IEKLKAALPEYAKDIKLNLSSITRSSVLDQEQLWGTLLASAAATRNPQVLADIGAEATDHLSAAARHAALGAAAIMGMNNVFYRGRGFLEGRYDDLRPGLRMNIIANPGIPKANFELWSFAVSAINGCSHCLVAHEHTLRTVGVDREAIFEALKAAAIVSGVAQALATIEALS 175
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172

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 '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All alpha proteins (14657)

Fold: AhpD-like (17)

Superfamily: AhpD-like (17)

Family: AhpD (5)

Protein domain: Antioxidant defense protein AhpD (4)

Mycobacterium tuberculosis [TaxId: 1773] (4)

1a	d1knca_	A:
1b	d1kncb_	B:
1c	d1kncc_	C:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Up-down Bundle (3216)

Topology: AhpD-like (17)

Homologous Superfamily: AhpD-like (17)

Mycobacterium tuberculosis. Organism_taxid: 1773. (2)

1a	1kncC00	C:3-175
1b	1kncA00	A:2-175
1c	1kncB00	B:2-175

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: AhpD-like (9)

Family: CMD (9)

Mycobacterium tuberculosis (3)

1a	CMD-1kncC01	C:94-175
1b	CMD-1kncC02	C:94-175
1c	CMD-1kncC03	C:94-175

Asymmetric Unit(hide GO term definitions)

Chain A,B,C (AHPD_MYCTO | P9WQB4)

molecular function
	GO:0008785	alkyl hydroperoxide reductase activity	Catalysis of the reaction: octane hydroperoxide + NADH + H+ = H2O + NAD+ + 1-octanol.
	GO:0016209	antioxidant activity	Inhibition of the reactions brought about by dioxygen (O2) or peroxides. Usually the antioxidant is effective because it can itself be more easily oxidized than the substance protected. The term is often applied to components that can trap free radicals, thereby breaking the chain reaction that normally leads to extensive biological damage.
	GO:0032843	hydroperoxide reductase activity	Catalysis of the reaction: 2 RSH + ROOH = RSSR + ROH + H2O. This reaction is the thiol-dependent conversion of an organic hydroperoxide to the corresponding alcohol.
	GO:0016491	oxidoreductase activity	Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
	GO:0004601	peroxidase activity	Catalysis of the reaction: donor + hydrogen peroxide = oxidized donor + 2 H2O.
	GO:0051920	peroxiredoxin activity	Catalysis of the reaction: 2 R'-SH + ROOH = R'-S-S-R' + H2O + ROH.
biological process
	GO:0098869	cellular oxidant detoxification	Any process carried out at the cellular level that reduces or removes the toxicity superoxide radicals or hydrogen peroxide.
	GO:0055114	oxidation-reduction process	A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
	GO:0006979	response to oxidative stress	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 oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.

Chain A,B,C (AHPD_MYCTU | P9WQB5)

molecular function
	GO:0008785	alkyl hydroperoxide reductase activity	Catalysis of the reaction: octane hydroperoxide + NADH + H+ = H2O + NAD+ + 1-octanol.
	GO:0016209	antioxidant activity	Inhibition of the reactions brought about by dioxygen (O2) or peroxides. Usually the antioxidant is effective because it can itself be more easily oxidized than the substance protected. The term is often applied to components that can trap free radicals, thereby breaking the chain reaction that normally leads to extensive biological damage.
	GO:0015036	disulfide oxidoreductase activity	Catalysis of the reaction: substrate with reduced sulfide groups = substrate with oxidized disulfide bonds.
	GO:0032843	hydroperoxide reductase activity	Catalysis of the reaction: 2 RSH + ROOH = RSSR + ROH + H2O. This reaction is the thiol-dependent conversion of an organic hydroperoxide to the corresponding alcohol.
	GO:0016491	oxidoreductase activity	Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
	GO:0004601	peroxidase activity	Catalysis of the reaction: donor + hydrogen peroxide = oxidized donor + 2 H2O.
	GO:0051920	peroxiredoxin activity	Catalysis of the reaction: 2 R'-SH + ROOH = R'-S-S-R' + H2O + ROH.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
	GO:0045454	cell redox homeostasis	Any process that maintains the redox environment of a cell or compartment within a cell.
	GO:0098869	cellular oxidant detoxification	Any process carried out at the cellular level that reduces or removes the toxicity superoxide radicals or hydrogen peroxide.
	GO:0055114	oxidation-reduction process	A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
	GO:0006979	response to oxidative stress	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 oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
cellular component
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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	1knc
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	AHPD_MYCTO \| P9WQB4
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	AHPD_MYCTU \| P9WQB5
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

UniProtKB/Swiss-Prot
	AHPD_MYCTO \| P9WQB4	:	1lw1 1me5
	AHPD_MYCTU \| P9WQB5	:	1gu9 1lw1 1me5

(no "Related Entries Specified in the PDB File" available for 1KNC)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 17)

Sites (17, 17)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 3)

CATH Domains (1, 3)

Pfam Domains (1, 3)

Gene Ontology (14, 23)

Visualization

Interactive Views

Still Images

Databases and Analysis Tools

Databases

Analysis Tools

Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File