Contacts of the helix formed by residues 646 - 650 (chain D) in PDB entry 2C11
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 SER 646 (chain D).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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367D GLU* 4.2 10.2 - - - +
385D VAL* 5.1 0.5 - - - +
387D GLY 5.4 0.2 - - - -
388D GLY* 5.0 1.6 + - - -
645D SER* 1.3 76.0 + - - +
647D VAL* 1.3 57.6 + - - +
648D PHE* 2.9 34.8 - - - -
649D ASN* 2.9 37.4 + - - +
650D GLN 4.0 1.9 + - - -
657D THR* 3.8 4.9 - - - +
658D VAL* 3.5 23.3 - - - +
1746D CU 3.4 11.5 - - - -
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Residues in contact with VAL 647 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
97D PHE* 4.9 0.4 - - + -
127D ILE* 4.2 12.6 - - + -
168D ARG 5.1 0.5 - - - +
170D PRO* 4.5 16.5 - - + +
344D PHE* 3.4 44.1 - - + +
387D GLY 3.5 17.9 - - - +
388D GLY* 3.2 25.3 - - - +
646D SER* 1.3 73.9 + - - +
648D PHE* 1.3 93.1 + - + +
650D GLN* 3.7 4.5 + - - +
651D ASN* 4.8 0.7 + - - -
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Residues in contact with PHE 648 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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127D ILE* 3.7 33.7 - - + -
138D VAL* 4.3 13.9 - - + -
139D SER 6.3 0.2 - - - -
140D GLU* 3.5 9.4 - - + -
164D LEU* 3.6 27.4 - - + -
168D ARG* 4.0 34.5 - - + +
169D ARG* 4.8 0.2 - - - -
170D PRO* 4.5 13.2 - - + -
646D SER* 2.9 21.0 - - - -
647D VAL* 1.3 95.7 - - + +
649D ASN* 1.3 63.5 + - - +
650D GLN 3.0 3.7 + - - -
651D ASN 3.5 9.8 + - - -
652D ASP* 3.5 9.7 + - - +
657D THR* 3.3 24.9 + - + +
1746D CU 3.5 20.6 - - - -
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Residues in contact with ASN 649 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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385D VAL* 4.9 7.2 - - + +
624D GLY* 2.9 36.2 + - - +
645D SER* 3.9 8.3 + - - +
646D SER* 2.9 24.1 + - - +
648D PHE* 1.3 78.3 - - - +
650D GLN* 1.3 61.8 + - - +
652D ASP 4.0 5.8 - - - -
653D PRO* 3.4 24.3 - - - +
656D PRO* 4.1 4.5 - - - +
657D THR* 2.8 32.2 + - - -
658D VAL 2.9 30.0 + - - -
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Residues in contact with GLN 650 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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214D ALA* 3.3 28.9 - - + +
215D PRO* 3.6 8.1 - - - +
216D ARG* 5.6 1.3 - - - +
383D ARG 4.0 2.9 - - - +
384D TYR* 3.8 1.6 - - - +
385D VAL* 3.1 45.0 + - - +
388D GLY* 3.3 31.9 - - - +
389D PHE* 3.0 33.5 - - + -
646D SER 4.0 1.8 + - - -
647D VAL 3.7 3.9 + - - +
648D PHE 3.0 0.8 - - - -
649D ASN* 1.3 81.4 - - - +
651D ASN* 1.3 73.9 + - - +
652D ASP 3.3 0.3 + - - -
653D PRO* 3.5 9.2 - - - +
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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