Contacts of the helix formed by residues 1305 - 1308 (chain A) in PDB entry 3PT6
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 GLY1305 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1303A GLN* 2.7 23.9 - - - +
1304A ALA* 1.3 72.6 - - - +
1306A GLN* 1.3 56.5 + - - +
1307A TYR 3.0 5.0 + - - -
1308A GLY 3.2 10.0 + - - -
1309A VAL 3.1 25.4 + - - +
1311A GLN 3.5 4.6 + - - -
1335A HIS* 3.9 10.0 - - - +
1337A PHE* 3.8 20.7 - - - -
1367A THR* 5.2 1.0 + - - -
1368A ILE* 5.5 1.6 + - - +
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Residues in contact with GLN1306 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1303A GLN* 3.4 33.0 + - + +
1304A ALA 3.1 0.6 - - - -
1305A GLY* 1.3 75.1 - - - +
1307A TYR* 1.3 64.3 + - + +
1308A GLY 3.6 0.7 - - - -
1333A PRO* 3.5 30.8 - - + +
1334A LEU 2.8 28.2 + - - -
1335A HIS 2.9 22.1 + - - +
1337A PHE* 3.8 9.8 - - + +
1342A CYS* 3.6 22.6 - - - +
1344A LEU* 3.6 25.7 - - - +
1357A ILE* 5.6 0.3 - - - +
1359A ARG 4.4 6.3 + - - -
1360A LEU 4.7 7.9 + - - -
1361A SER 5.2 5.5 + - - -
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Residues in contact with TYR1307 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1302A LEU* 3.5 23.2 - - + +
1303A GLN 3.5 17.3 - - - -
1304A ALA 2.8 8.8 + - - +
1306A GLN* 1.3 85.4 - - + +
1308A GLY* 1.3 57.7 + - - +
1331A PRO* 2.8 48.1 + - + +
1332A GLU 3.5 20.9 - - - -
1333A PRO* 3.8 8.8 - - + +
1334A LEU* 4.3 16.9 - - + +
1335A HIS* 3.7 7.3 + - - -
1357A ILE* 3.8 5.8 - - + +
1585A PRO* 3.6 30.9 - - - +
1586A LEU* 3.3 33.0 - - + +
1589A ALA* 3.7 14.4 - - + -
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Residues in contact with GLY1308 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1304A ALA 3.6 0.2 + - - -
1305A GLY 3.2 3.6 + - - -
1307A TYR* 1.3 80.5 - - - +
1309A VAL* 1.3 65.7 + - - +
1335A HIS* 3.3 30.7 - - - -
1368A ILE* 3.7 8.0 - - - +
1398A TRP* 5.7 1.2 - - - -
1399A PHE* 3.2 26.5 - - - -
1585A PRO* 4.4 3.9 - - - +
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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
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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