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Title :   CRYSTAL STRUCTURE OF O-ACETYL SERINE SULFHYDRYLASE FROM ENTAMOEBA HISTOLYTICA IN COMPLEX WITH SERINE ACETYL TRANSFERASE DERIVED TETRAPEPTIDE, SPSI

Authors :   I. Raj, S. Gourinath

Date :   20 Feb 13 (Deposition) - 04 Dec 13 (Release) - 04 Dec 13 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.87

Chains :   Asym./Biol. Unit : A,B,C

Keywords :   Cysteine Synthase, Peptide Inhibitor, Plp Fold Type 2, Tryptophan Synthase Family, Lyase, Serine Acetyl Transferase, Transferase- Transferase Inhibitor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   I. Raj, M. Mazumder, S. Gourinath
Molecular Basis Of Ligand Recognition By Oass From E. Histolytica: Insights From Structural And Molecular Dynamic Simulation Studies
Biochim. Biophys. Acta V. 1830 4573 2013
PubMed-ID: 23747298 | Reference-DOI: 10.1016/J.BBAGEN.2013.05.041

Molecule 1 - CYSTEINE SYNTHASE
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PET21C
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	EHOASS
	Organism Scientific	:	ENTAMOEBA HISTOLYTICA
	Organism Taxid	:	5759
	Synonym	:	O-ACETYL SERINE SULFHYDRYLASE

Molecule 2 - SAT DERIVED TETRAPEPTIDE
	Chains	:	C
	Engineered	:	YES
	Synthetic	:	YES

		1	2	3
Asymmetric/Biological Unit	:	A	B	C

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 3)

No.	Name	Count	Type	Full Name
1	LLP	2	Mod. Amino Acid	2-LYSINE(3-HYDROXY-2-METHYL-5-PHOSPHONOOXYMETHYL-PYRIDIN-4-YLMETHANE)
2	SO4	1	Ligand/Ion	SULFATE ION

Asymmetric Unit (1, 1)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASN A:174 , LYS A:203 , LYS A:207	BINDING SITE FOR RESIDUE SO4 A 401

(no "SS Bond" information available for 4JBN)

(no "Cis Peptide Bond" information available for 4JBN)

(no "SAP(SNP)/Variant" information available for 4JBN)

(no "PROSITE Motif" information available for 4JBN)

(no "Exon" information available for 4JBN)

Asymmetric/Biological Unit

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:336
                                                                                                                                                                                                                                                                                                                                                                                
               SCOP domains d4jbna_ A: automated matches                                                                                                                                                                                                                                                                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ...........ee.hhhhhh....eee..............eeeeee.hhh....hhhhhhhhhhhhhhhh.......eeeee..hhhhhhhhhhhhhhh..eeeeee...hhhhhhhhhhh..eeeeehhhhhhhhhhhhhhhhhhhh...eee.....hhhhhhhhhhhhhhhhhhh.....eeeee...hhhhhhhhhhhhhhh...eeeeeee.hhh........................hhhhh.eeeeehhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhh..eeeeee..hhhhhh...........hhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 4jbn A   2 EQISISSPRKRIYHNILETIGGTPLVELHGVTEHPRIKKGTRILVKLEYFNPMSSVkDRVGFNIVYQAIKDGRLKPGMEIIESTSGNTGIALCQAGAVFGYRVNIAMPSTMSVERQMIMKAFGAELILTEGKKGMPGAIEEVNKMIKENPGKYFVANQFGNPDNTAAHHYTANEIWEDTDGEVDIVVSAVGTSGTVIGVAEKLKEKKKGIKIIAVEPEESAVLEGKAKGPHGIQGIGAGFIPDIYKKEFVDEIIPIKTQDAWKMARAVVKYDGIMCGMSSGAAILAGLKEAEKPENEGKTIVIIVPSCGERYLSTDLYKIKDEGTKIQILDSLLNE 337
                                    11        21        31        41        51      | 61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331      
                                                                                   58-LLP

Chain B from PDB  Type:PROTEIN  Length:337
                                                                                                                                                                                                                                                                                                                                                                                 
               SCOP domains d4jbnb_ B: automated matches                                                                                                                                                                                                                                                                                                                      SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...........ee.hhhhhh....eee.hhhhh........eeeeee.hhh....hhhhhhhhhhhhhhhh.......eeeee..hhhhhhhhhhhhhhh..eeeeee...hhhhhhhhhhh..eeeeehhhhhhhhhhhhhhhhhhhh...eee.....hhhhhhhhhhhhhhhhhhh...eeeeeee...hhhhhhhhhhhhhhh...eeeeeee.hhh........................hhhhh.eeeeehhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhh..eeeeee..hhhhhh...........hhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4jbn B   2 EQISISSPRKRIYHNILETIGGTPLVELHGVTEHPRIKKGTRILVKLEYFNPMSSVkDRVGFNIVYQAIKDGRLKPGMEIIESTSGNTGIALCQAGAVFGYRVNIAMPSTMSVERQMIMKAFGAELILTEGKKGMPGAIEEVNKMIKENPGKYFVANQFGNPDNTAAHHYTANEIWEDTDGEVDIVVSAVGTSGTVIGVAEKLKEKKKGIKIIAVEPEESAVLEGKAKGPHGIQGIGAGFIPDIYKKEFVDEIIPIKTQDAWKMARAVVKYDGIMCGMSSGAAILAGLKEAEKPENEGKTIVIIVPSCGERYLSTDLYKIKDEGTKIQILDSLLNEH 338
                                    11        21        31        41        51      | 61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       
                                                                                   58-LLP

Chain C from PDB  Type:PROTEIN  Length:3
                                   
               SCOP domains --- SCOP domains
               CATH domains --- CATH domains
               Pfam domains --- Pfam domains
         Sec.struct. author ... Sec.struct. author
                 SAPs(SNPs) --- SAPs(SNPs)
                    PROSITE --- PROSITE
                 Transcript --- Transcript
                 4jbn C 400 PSI 402

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/Biological Unit

Classes(

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Folds(

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Superfamilies( (-)

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Families(

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Protein Domains( (-)

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Organisms( (-)

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Class: Alpha and beta proteins (a/b) (23833)

Fold: Tryptophan synthase beta subunit-like PLP-dependent enzymes (165)

Superfamily: Tryptophan synthase beta subunit-like PLP-dependent enzymes (165)

Family: automated matches (45)

Protein domain: automated matches (45)

Entamoeba histolytica [TaxId: 294381] (5)

1a	d4jbna_	A:
1b	d4jbnb_	B:

(no "CATH Domain" information available for 4JBN)

(no "Pfam Domain" information available for 4JBN)

Asymmetric/Biological Unit(hide GO term definitions)

Asymmetric/Biological Unit
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Description

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Ligands, Modified Residues, Ions (2, 3)

Sites (1, 1)

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