Contacts of the helix formed by residues 1321 - 1325 (chain G) in PDB entry 2BT4
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with TYR1321 (chain G).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1284G SER 2.9 10.4 + - - +
1285G HIS 3.5 24.5 - - - -
1286G THR* 3.9 24.5 - - - -
1287G SER 3.9 18.4 - - - +
1288G VAL* 3.9 24.2 - - + +
1291G LEU* 3.4 17.9 - - + +
1320G SER* 1.4 69.9 - - - +
1322G VAL* 1.3 65.7 + - - +
1324G GLN* 3.1 36.6 + - - +
1686I THR* 5.4 2.8 - - + +
1716I PHE* 4.0 36.1 - + + +
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Residues in contact with VAL1322 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1278G ILE* 4.3 5.8 - - + -
1280G PRO* 3.7 25.4 - - + -
1283G TYR 4.9 3.1 - - - +
1284G SER* 4.1 7.2 + - - -
1287G SER 5.0 1.8 - - - +
1290G ILE* 3.9 25.8 - - + -
1291G LEU* 4.7 9.0 - - - +
1294G LEU* 3.6 22.2 - - + -
1304G GLU* 3.7 26.0 - - + +
1320G SER* 3.3 9.0 + - - +
1321G TYR* 1.3 77.7 - - - +
1323G SER* 1.3 62.7 + - - +
1324G GLN 3.1 1.0 + - - -
1325G ARG* 3.1 4.5 + - - +
1326G ALA* 3.0 23.5 + - + -
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Residues in contact with SER1323 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
309B ASN* 3.1 24.1 + - - -
311B HIS* 3.9 24.4 - - - +
312B GLN* 3.4 4.5 + - - +
1304G GLU* 2.4 27.5 + - - -
1320G SER* 3.2 24.7 + - - -
1321G TYR 3.2 1.0 - - - -
1322G VAL* 1.3 77.4 - - - +
1324G GLN* 1.3 59.6 + - - +
1325G ARG 3.2 0.2 - - - -
1326G ALA* 4.1 2.0 - - - -
1329G VAL* 3.7 21.6 - - - +
2417G GOL 4.4 3.9 + - - -
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Residues in contact with GLN1324 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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311B HIS* 4.6 11.7 - - + +
312B GLN* 3.1 23.1 + - - +
1291G LEU* 3.8 16.1 - - + +
1295G ASN* 5.4 0.3 - - - +
1320G SER 4.1 6.5 - - - +
1321G TYR* 3.1 29.0 + - - +
1322G VAL 3.1 0.4 + - - -
1323G SER* 1.3 77.1 - - - +
1325G ARG* 1.3 56.9 + - - +
2417G GOL 6.1 2.6 - - - +
1714I GLU* 5.4 5.3 - - - +
1716I PHE* 3.3 35.1 - - - -
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Residues in contact with ARG1325 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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312B GLN* 3.5 6.7 + - - +
1291G LEU* 3.6 13.6 - - + +
1294G LEU* 3.4 36.1 + - + -
1295G ASN* 3.4 30.5 + - - +
1297G CYS* 2.8 25.1 + - - +
1298G ASP* 4.8 0.8 - - - +
1299G GLY 4.5 2.8 - - - +
1300G LEU 2.8 24.9 + - - +
1302G VAL* 3.5 16.7 - - + +
1322G VAL 3.1 4.6 + - - +
1324G GLN* 1.3 78.8 - - - +
1326G ALA* 1.3 68.1 + - - +
1327G ASP* 3.1 28.4 + - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il