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Asym./Biol. Unit (Jmol Viewer)

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Title :   HUMAN METHYLENETETRAHYDROFOLATE DEHYDROGENASE / CYCLOHYDROLASE COMPLEXED WITH NADP AND INHIBITOR LY374571

Authors :   A. Schmidt, H. Wu, R. E. Mackenzie, V. J. Chen, J. R. Bewly, J. E. Ray, J. E. Toth, M. Cygler

Date :   29 Nov 99 (Deposition) - 05 Jul 00 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.20

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

Keywords :   Tetrahydrofolate, Dehydrogenase, Cyclohydrolase, Nadp, Inhibitor, Rossmann Fold, Oxidoreductase, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. Schmidt, H. Wu, R. E. Mackenzie, V. J. Chen, J. R. Bewly, J. E. Ray, J. E. Toth, M. Cygler
Structures Of Three Inhibitor Complexes Provide Insight Into The Reaction Mechanism Of The Human Methylenetetrahydrofolate Dehydrogenase/Cyclohydrolase.
Biochemistry V. 39 6325 2000
PubMed-ID: 10828945 | Reference-DOI: 10.1021/BI992734Y
(for further references see the PDB file header)

Molecule 1 - METHYLENETETRAHYDROFOLATE DEHYDROGENASE / CYCLOHYDROLASE
	Chains	:	A, B
	EC Number	:	1.5.1.5, 3.5.4.9
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	DC301

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (3, 4)

No.	Name	Count	Type	Full Name
1	ACT	1	Ligand/Ion	ACETATE ION
2	L37	1	Ligand/Ion	[[N'-(2,5-DIAMINO-6-HYDROXY-PYRIMIDIN-4-YL)-UREAYL]-PHEN-4-YL]-CARBONYL-GLUTAMIC ACID
3	NAP	2	Ligand/Ion	NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	PRO A:162 , GLN B:1023 , GLU B:1289 , LYS B:1292 , HOH B:4208	BINDING SITE FOR RESIDUE ACT B 4000
2	AC2	SOFTWARE	THR A:148 , ARG A:173 , SER A:174 , HIS A:196 , SER A:197 , LEU A:202 , ALA A:215 , THR A:216 , GLY A:217 , GLN A:218 , MET A:221 , CYS A:236 , ILE A:238 , GLY A:276 , THR A:279 , L37 A:3001 , HOH A:4011 , HOH A:4111 , HOH A:4112 , HOH A:4163	BINDING SITE FOR RESIDUE NAP A 2001
3	AC3	SOFTWARE	THR B:1148 , GLY B:1172 , ARG B:1173 , SER B:1174 , HIS B:1196 , SER B:1197 , ALA B:1215 , THR B:1216 , GLY B:1217 , GLN B:1218 , MET B:1221 , CYS B:1236 , ILE B:1238 , GLY B:1276 , THR B:1279 , HOH B:4025 , HOH B:4026 , HOH B:4087 , HOH B:4088 , HOH B:4107 , HOH B:4198 , HOH B:4201	BINDING SITE FOR RESIDUE NAP B 2002
4	AC4	SOFTWARE	LYS A:56 , LEU A:101 , ILE A:238 , GLY A:273 , GLY A:274 , GLY A:276 , PRO A:277 , NAP A:2001 , HOH A:4012	BINDING SITE FOR RESIDUE L37 A 3001

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

Asymmetric/Biological Unit

No.	Residues
1	Leu A:101	-	Pro A:102
2	Val A:271	-	Pro A:272
3	Leu B:1101	-	Pro B:1102
4	Val B:1271	-	Pro B:1272

Asymmetric/Biological Unit (6, 12)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_074075	S	49	F	C1TC_HUMAN	Unclassified	---	A B	S	49 1049	F
2	UniProt	VAR_016232	R	134	K	C1TC_HUMAN	Polymorphism	1950902	A B	R	134 1134	K
3	UniProt	VAR_055458	P	162	L	C1TC_HUMAN	Polymorphism	4902283	A B	P	162 1162	L
4	UniProt	VAR_074076	R	173	C	C1TC_HUMAN	Unclassified	---	A B	R	173 1173	C
5	UniProt	VAR_074077	T	269	I	C1TC_HUMAN	Unclassified	---	A B	T	269 1269	I
6	UniProt	VAR_010241	R	293	H	C1TC_HUMAN	Disease (NTDFS)	34181110	A B	R	293 1293	H

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

Asymmetric/Biological Unit (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	THF_DHG_CYH_1	PS00766	Tetrahydrofolate dehydrogenase/cyclohydrolase signature 1.	C1TC_HUMAN	78-103	2	A:78-103 B:1078-1103
2	THF_DHG_CYH_2	PS00767	Tetrahydrofolate dehydrogenase/cyclohydrolase signature 2.	C1TC_HUMAN	272-280	2	A:272-280 B:1272-1280

Asymmetric/Biological Unit (10, 20)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENST00000216605	1	ENSE00001013539	chr14:64854958-64855186	229	C1TC_HUMAN	1-14	14	2	A:2-14 B:1002-1014	13 13
1.2	ENST00000216605	2	ENSE00000867603	chr14:64867511-64867595	85	C1TC_HUMAN	14-42	29	2	A:14-42 B:1014-1042	29 29
1.3	ENST00000216605	3	ENSE00000658402	chr14:64877808-64877867	60	C1TC_HUMAN	43-62	20	2	A:43-62 B:1043-1062	20 20
1.4	ENST00000216605	4	ENSE00000658403	chr14:64879190-64879243	54	C1TC_HUMAN	63-80	18	2	A:63-80 B:1063-1080	18 18
1.5	ENST00000216605	5	ENSE00000658404	chr14:64882076-64882212	137	C1TC_HUMAN	81-126	46	2	A:81-126 B:1081-1126	46 46
1.6	ENST00000216605	6	ENSE00000658405	chr14:64882357-64882457	101	C1TC_HUMAN	126-160	35	2	A:126-160 B:1126-1160	35 35
1.7	ENST00000216605	7	ENSE00000658406	chr14:64884606-64884742	137	C1TC_HUMAN	160-205	46	2	A:160-205 B:1160-1205	46 46
1.8	ENST00000216605	8	ENSE00000658407	chr14:64886532-64886643	112	C1TC_HUMAN	206-243	38	2	A:206-240 B:1206-1243	35 38
1.9	ENST00000216605	9	ENSE00000658408	chr14:64891522-64891649	128	C1TC_HUMAN	243-285	43	2	A:251-285 B:1243-1285	35 43
1.10	ENST00000216605	10	ENSE00000658409	chr14:64892448-64892545	98	C1TC_HUMAN	286-318	33	2	A:286-296 B:1286-1296	11 11
1.11	ENST00000216605	11	ENSE00000658410	chr14:64892737-64892910	174	C1TC_HUMAN	318-376	59	0	-	-
1.12	ENST00000216605	12	ENSE00000658411	chr14:64894055-64894191	137	C1TC_HUMAN	376-422	47	0	-	-
1.13	ENST00000216605	13	ENSE00000658412	chr14:64896902-64896948	47	C1TC_HUMAN	422-437	16	0	-	-
1.14	ENST00000216605	14	ENSE00001096762	chr14:64898250-64898357	108	C1TC_HUMAN	438-473	36	0	-	-
1.15	ENST00000216605	15	ENSE00000658414	chr14:64898505-64898579	75	C1TC_HUMAN	474-498	25	0	-	-
1.16	ENST00000216605	16	ENSE00001096757	chr14:64902287-64902389	103	C1TC_HUMAN	499-533	35	0	-	-
1.17	ENST00000216605	17	ENSE00000658416	chr14:64905814-64905890	77	C1TC_HUMAN	533-558	26	0	-	-
1.18	ENST00000216605	18	ENSE00000658418	chr14:64906844-64906984	141	C1TC_HUMAN	559-605	47	0	-	-
1.19	ENST00000216605	19	ENSE00000658419	chr14:64908103-64908171	69	C1TC_HUMAN	606-628	23	0	-	-
1.20	ENST00000216605	20	ENSE00000658420	chr14:64908772-64908883	112	C1TC_HUMAN	629-666	38	0	-	-
1.21	ENST00000216605	21	ENSE00000658421	chr14:64908981-64909120	140	C1TC_HUMAN	666-712	47	0	-	-
1.22	ENST00000216605	22	ENSE00000658422	chr14:64911411-64911452	42	C1TC_HUMAN	713-726	14	0	-	-
1.23	ENST00000216605	23	ENSE00000658423	chr14:64914935-64915035	101	C1TC_HUMAN	727-760	34	0	-	-
1.24	ENST00000216605	24	ENSE00000658424	chr14:64916163-64916340	178	C1TC_HUMAN	760-819	60	0	-	-
1.25	ENST00000216605	25	ENSE00000658425	chr14:64920472-64920579	108	C1TC_HUMAN	820-855	36	0	-	-
1.26	ENST00000216605	26	ENSE00001757563	chr14:64921441-64921593	153	C1TC_HUMAN	856-906	51	0	-	-
1.27	ENST00000216605	27	ENSE00000867602	chr14:64924932-64925025	94	C1TC_HUMAN	907-935	29	0	-	-
1.28	ENST00000216605	28	ENSE00001351983	chr14:64926477-64926721	245	C1TC_HUMAN	-	0	0	-	-

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
	(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:285
 aligned with C1TC_HUMAN | P11586 from UniProtKB/Swiss-Prot  Length:935

    Alignment length:295
                                    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     
          C1TC_HUMAN      2 APAEILNGKEISAQIRARLKNQVTQLKEQVPGFTPRLAILQVGNRDDSNLYINVKLKAAEEIGIKATHIKLPRTTTESEVMKYITSLNEDSTVHGFLVQLPLDSENSINTEEVINAIAPEKDVDGLTSINAGRLARGDLNDCFIPCTPKGCLELIKETGVPIAGRHAVVVGRSKIVGAPMHDLLLWNNATVTTCHSKTAHLDEEVNKGDILVVATGQPEMVKGEWIKPGAIVIDCGINYVPDDKKPNGRKVVGDVAYDEAKERASFITPVPGGVGPMTVAMLMQSTVESAKRFLE  296
               SCOP domains d1diga2 A:2-126 Tetrahydrofolate dehydrogenase/cyclohydrolase                                                                d1diga1 A:127-296 Methylenetetrahydrofolate dehydrogenase/cyclohydrolase                                                                                                   SCOP domains
               CATH domains 1digA0-----------------------1digA02 A:31-119 Leucine Dehydrogenase, chain A, domain 1                                --------------------------1digA01 A:2-7,A:146-276 NAD(P)-binding Rossmann-like Domain                                                                        -------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee.hhhhhhhhhhhhhhhhhhhhhhhh.....eeeeeee..hhhhhhhhhhhhhhhhhhh.eeeeeee....hhhhhhhhhhhhhhh....eeee..........hhhhhhhhhhhhh.....hhhhhhhhhh........hhhhhhhhhhhhh........eeeee.....hhhhhhhhhhh...eeeee.....hhhhhhh...eeee.................eeee.....----------......hhhhhh....ee.....hhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------THF_DHG_CYH_1             ------------------------------------------------------------------------------------------------------------------------------------------------------------------------THF_DHG_C---------------- PROSITE
           Transcript 1 (1) Exon 1.1     ----------------------------Exon 1.3            Exon 1.4          Exon 1.5  PDB: A:81-126 UniProt: 81-126       ---------------------------------Exon 1.7  PDB: A:160-205 UniProt: 160-205     Exon 1.8  PDB: A:206-240 [INCOMPLETE] ------------------------------------------Exon 1.10   Transcript 1 (1)
           Transcript 1 (2) ------------Exon 1.2  PDB: A:14-42       -----------------------------------------------------------------------------------Exon 1.6  PDB: A:126-160           ----------------------------------------------------------------------------------Exon 1.9  PDB: A:251-285 UniProt: 243-285  ----------- Transcript 1 (2)
                1dig A    2 APAEILNGKEISAQIRARLKNQVTQLKEQVPGFTPRLAILQVGNRDDSNLYINVKLKAAEEIGIKATHIKLPRTTTESEVMKYITSLNEDSTVHGFLVQLPLDSENSINTEEVINAIAPEKDVDGLTSINAGRLARGDLNDCFIPCTPKGCLELIKETGVPIAGRHAVVVGRSKIVGAPMHDLLLWNNATVTTCHSKTAHLDEEVNKGDILVVATGQPEMVKGEWIKPGAIVIDCGINY----------KVVGDVAYDEAKERASFITPVPGGVGPMTVAMLMQSTVESAKRFLE  296
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231        |-       251       261       271       281       291     
                                                                                                                                                                                                                                                                        240        251

Chain B from PDB  Type:PROTEIN  Length:295
 aligned with C1TC_HUMAN | P11586 from UniProtKB/Swiss-Prot  Length:935

    Alignment length:295
                                    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     
          C1TC_HUMAN      2 APAEILNGKEISAQIRARLKNQVTQLKEQVPGFTPRLAILQVGNRDDSNLYINVKLKAAEEIGIKATHIKLPRTTTESEVMKYITSLNEDSTVHGFLVQLPLDSENSINTEEVINAIAPEKDVDGLTSINAGRLARGDLNDCFIPCTPKGCLELIKETGVPIAGRHAVVVGRSKIVGAPMHDLLLWNNATVTTCHSKTAHLDEEVNKGDILVVATGQPEMVKGEWIKPGAIVIDCGINYVPDDKKPNGRKVVGDVAYDEAKERASFITPVPGGVGPMTVAMLMQSTVESAKRFLE  296
               SCOP domains d1digb2 B:1002-1126 Tetrahydrofolate dehydrogenase/cyclohydrolase                                                            d1digb1 B:1127-1296 Methylenetetrahydrofolate dehydrogenase/cyclohydrolase                                                                                                 SCOP domains
               CATH domains 1digB0-----------------------1digB02 B:1031-1119 Leucine Dehydrogenase, chain A, domain 1                             --------------------------1digB01 B:1002-1007,B:1146-1276 NAD(P)-binding Rossmann-like Domain                                                                -------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee.hhhhhhhhhhhhhhhhhhhhhhhh.....eeeeeee..hhhhhhhhhhhhhhhhhhh.eeeeeee....hhhhhhhhhhhhhhh....eeee..........hhhhhhhhhhhhh.....hhhhhhhhhh........hhhhhhhhhhhhh........eeeee.....hhhhhhhhhhh...eeeee.....hhhhhhh...eeee.................eeee...eeee.......eeee...hhhhhh....ee......hhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------F------------------------------------------------------------------------------------K---------------------------L----------C-----------------------------------------------------------------------------------------------I-----------------------H--- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------THF_DHG_CYH_1             ------------------------------------------------------------------------------------------------------------------------------------------------------------------------THF_DHG_C---------------- PROSITE
           Transcript 1 (1) Exon 1.1     ----------------------------Exon 1.3            Exon 1.4          Exon 1.5  PDB: B:1081-1126 UniProt: 81-126    ---------------------------------Exon 1.7  PDB: B:1160-1205 UniProt: 160-205   Exon 1.8  PDB: B:1206-1243            ------------------------------------------Exon 1.10   Transcript 1 (1)
           Transcript 1 (2) ------------Exon 1.2  PDB: B:1014-1042   -----------------------------------------------------------------------------------Exon 1.6  PDB: B:1126-1160         ----------------------------------------------------------------------------------Exon 1.9  PDB: B:1243-1285 UniProt: 243-285----------- Transcript 1 (2)
                1dig B 1002 APAEILNGKEISAQIRARLKNQVTQLKEQVPGFTPRLAILQVGNRDDSNLYINVKLKAAEEIGIKATHIKLPRTTTESEVMKYITSLNEDSTVHGFLVQLPLDSENSINTEEVINAIAPEKDVDGLTSINAGRLARGDLNDCFIPCTPKGCLELIKETGVPIAGRHAVVVGRSKIVGAPMHDLLLWNNATVTTCHSKTAHLDEEVNKGDILVVATGQPEMVKGEWIKPGAIVIDCGINYVPDDKKPNGRKVVGDVAYDEAKERASFITPVPGGVGPMTVAMLMQSTVESAKRFLE 1296
                                  1011      1021      1031      1041      1051      1061      1071      1081      1091      1101      1111      1121      1131      1141      1151      1161      1171      1181      1191      1201      1211      1221      1231      1241      1251      1261      1271      1281      1291

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(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Leucine Dehydrogenase; Chain A, domain 1 (52)

Homologous Superfamily: Leucine Dehydrogenase, chain A, domain 1 (52)

Human (Homo sapiens) (6)

1a	1digA02	A:31-119
1b	1digB02	B:1031-1119

Topology: Rossmann fold (7312)

Homologous Superfamily: NAD(P)-binding Rossmann-like Domain (1244)

Human (Homo sapiens) (188)

2a	1digB01	B:1002-1007,B:1146-1276
2b	1digA01	A:2-7,A:146-276

(no "Pfam Domain" information available for 1DIG)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (C1TC_HUMAN | P11586)

molecular function
	GO:0005524	ATP binding	Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
	GO:0003824	catalytic activity	Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
	GO:0004329	formate-tetrahydrofolate ligase activity	Catalysis of the reaction: ATP + formate + tetrahydrofolate = ADP + phosphate + 10-formyltetrahydrofolate.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0016874	ligase activity	Catalysis of the joining of two substances, or two groups within a single molecule, with the concomitant hydrolysis of the diphosphate bond in ATP or a similar triphosphate.
	GO:0004477	methenyltetrahydrofolate cyclohydrolase activity	Catalysis of the reaction: 5,10-methenyltetrahydrofolate + H2O = 10-formyltetrahydrofolate.
	GO:0004487	methylenetetrahydrofolate dehydrogenase (NAD+) activity	Catalysis of the reaction: 5,10-methylenetetrahydrofolate + NAD(+) = 5,10-methenyltetrahydrofolate + NADH.
	GO:0004488	methylenetetrahydrofolate dehydrogenase (NADP+) activity	Catalysis of the reaction: 5,10-methylenetetrahydrofolate + NADP(+) = 5,10-methenyltetrahydrofolate + NADPH.
	GO:0004486	methylenetetrahydrofolate dehydrogenase [NAD(P)+] activity	Catalysis of the reaction: 5,10-methylenetetrahydrofolate + NAD(P)+ = 5,10-methenyltetrahydrofolate + NAD(P)H + H+.
	GO:0000166	nucleotide binding	Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
	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: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:0009257	10-formyltetrahydrofolate biosynthetic process	The chemical reactions and pathways resulting in the formation of 10-formyltetrahydrofolate, the formylated derivative of tetrahydrofolate.
	GO:0008652	cellular amino acid biosynthetic process	The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents.
	GO:0048702	embryonic neurocranium morphogenesis	The process in which the anatomical structures of the neurocranium are generated and organized during the embryonic phase. The neurocranium is the portion of the vertebrate skull surrounding the brain.
	GO:0048703	embryonic viscerocranium morphogenesis	The process in which the anatomical structures of the viscerocranium are generated and organized during the embryonic phase. The viscerocranium is the part of the skull comprising the facial bones.
	GO:0046655	folic acid metabolic process	The chemical reactions and pathways involving folic acid, pteroylglutamic acid. Folic acid is widely distributed as a member of the vitamin B complex and is essential for the synthesis of purine and pyrimidines.
	GO:0009396	folic acid-containing compound biosynthetic process	The chemical reactions and pathways resulting in the formation of folic acid and its derivatives.
	GO:0007507	heart development	The process whose specific outcome is the progression of the heart over time, from its formation to the mature structure. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood.
	GO:0000105	histidine biosynthetic process	The chemical reactions and pathways resulting in the formation of histidine, 2-amino-3-(1H-imidazol-4-yl)propanoic acid.
	GO:0008152	metabolic process	The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
	GO:0009086	methionine biosynthetic process	The chemical reactions and pathways resulting in the formation of methionine (2-amino-4-(methylthio)butanoic acid), a sulfur-containing, essential amino acid found in peptide linkage in proteins.
	GO:0006555	methionine metabolic process	The chemical reactions and pathways involving methionine (2-amino-4-(methylthio)butanoic acid), a sulfur-containing, essential amino acid found in peptide linkage in proteins.
	GO:0001843	neural tube closure	The last step in the formation of the neural tube, where the paired neural folds are brought together and fuse at the dorsal midline.
	GO:0001780	neutrophil homeostasis	The process of regulating the proliferation and elimination of neutrophils such that the total number of neutrophils within a whole or part of an organism is stable over time in the absence of an outside stimulus.
	GO:0006730	one-carbon metabolic process	The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
	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:0006164	purine nucleotide biosynthetic process	The chemical reactions and pathways resulting in the formation of a purine nucleotide, a compound consisting of nucleoside (a purine base linked to a deoxyribose or ribose sugar) esterified with a phosphate group at either the 3' or 5'-hydroxyl group of the sugar.
	GO:0009070	serine family amino acid biosynthetic process	The chemical reactions and pathways resulting in the formation of amino acids of the serine family, comprising cysteine, glycine, homoserine, selenocysteine and serine.
	GO:0009069	serine family amino acid metabolic process	The chemical reactions and pathways involving amino acids of the serine family, comprising cysteine, glycine, homoserine, selenocysteine and serine.
	GO:0061053	somite development	The progression of a somite from its initial formation to the mature structure. Somites are mesodermal clusters that are arranged segmentally along the anterior posterior axis of an embryo.
	GO:0035999	tetrahydrofolate interconversion	The chemical reactions and pathways by which one-carbon (C1) units are transferred between tetrahydrofolate molecules, to synthesise other tetrahydrofolate molecules.
	GO:0019346	transsulfuration	The interconversion of homocysteine and cysteine via cystathionine. In contrast with enteric bacteria and mammals, Saccharomyces cerevisiae has two transsulfuration pathways employing two separate sets of enzymes.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	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:0070062	extracellular exosome	A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005739	mitochondrion	A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.

Asymmetric/Biological Unit
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	C1TC_HUMAN \| P11586	:	1a4i 1dia 1dib

1a4i	STRUCTURE OF THE NATIVE HUMAN METHYLENETETRAHYDROFOLATE DEHYDROGENASE / CYCLOHYDROLASE (DC301) COMPLEXED WITH THE COFACTOR NADP
1dia
1dib

Description

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Ligands, Modified Residues, Ions (3, 4)

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